./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.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_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/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_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/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_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/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 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:36:05,529 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:36:05,644 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:36:05,656 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:36:05,657 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:36:05,692 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:36:05,694 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:36:05,695 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:36:05,696 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:36:05,701 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:36:05,703 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:36:05,703 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:36:05,704 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:36:05,706 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:36:05,706 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:36:05,707 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:36:05,707 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:36:05,708 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:36:05,708 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:36:05,709 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:36:05,709 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:36:05,710 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:36:05,711 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:36:05,711 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:36:05,712 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:36:05,712 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:36:05,713 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:36:05,714 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:36:05,714 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:36:05,715 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:36:05,716 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:36:05,716 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:36:05,717 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:36:05,717 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:36:05,717 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:36:05,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:36:05,718 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:36:05,718 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:36:05,719 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:36:05,719 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:36:05,719 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:36:05,720 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_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a [2023-11-06 22:36:06,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:36:06,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:36:06,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:36:06,039 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:36:06,039 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:36:06,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2023-11-06 22:36:09,180 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:36:09,553 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:36:09,554 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2023-11-06 22:36:09,577 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/data/6157d8680/378bd183c7dd4bc68bd4cc754fcfbef8/FLAGd6c395f28 [2023-11-06 22:36:09,601 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/data/6157d8680/378bd183c7dd4bc68bd4cc754fcfbef8 [2023-11-06 22:36:09,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:36:09,606 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:36:09,607 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:36:09,607 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:36:09,615 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:36:09,616 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:36:09" (1/1) ... [2023-11-06 22:36:09,618 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1381c2cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:09, skipping insertion in model container [2023-11-06 22:36:09,618 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:36:09" (1/1) ... [2023-11-06 22:36:09,677 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:36:10,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:36:10,280 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:36:10,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:36:10,439 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:36:10,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10 WrapperNode [2023-11-06 22:36:10,440 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:36:10,442 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:36:10,442 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:36:10,442 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:36:10,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10" (1/1) ... [2023-11-06 22:36:10,484 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10" (1/1) ... [2023-11-06 22:36:10,537 INFO L138 Inliner]: procedures = 262, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 115 [2023-11-06 22:36:10,537 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:36:10,538 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:36:10,539 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:36:10,539 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:36:10,550 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10" (1/1) ... [2023-11-06 22:36:10,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10" (1/1) ... [2023-11-06 22:36:10,564 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10" (1/1) ... [2023-11-06 22:36:10,574 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10" (1/1) ... [2023-11-06 22:36:10,585 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10" (1/1) ... [2023-11-06 22:36:10,601 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10" (1/1) ... [2023-11-06 22:36:10,603 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10" (1/1) ... [2023-11-06 22:36:10,609 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10" (1/1) ... [2023-11-06 22:36:10,612 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:36:10,622 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:36:10,623 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:36:10,623 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:36:10,624 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10" (1/1) ... [2023-11-06 22:36:10,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:36:10,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:36:10,658 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:36:10,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:36:10,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:36:10,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:36:10,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:36:10,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:36:10,702 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:36:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:36:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 22:36:10,703 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 22:36:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:36:10,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:36:10,705 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 22:36:10,888 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:36:10,890 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:36:11,194 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:36:11,204 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:36:11,204 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 22:36:11,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:36:11 BoogieIcfgContainer [2023-11-06 22:36:11,206 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:36:11,229 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:36:11,229 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:36:11,232 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:36:11,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:36:09" (1/3) ... [2023-11-06 22:36:11,236 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0a8cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:36:11, skipping insertion in model container [2023-11-06 22:36:11,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:10" (2/3) ... [2023-11-06 22:36:11,237 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0a8cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:36:11, skipping insertion in model container [2023-11-06 22:36:11,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:36:11" (3/3) ... [2023-11-06 22:36:11,239 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_05-funloop_hard2.i [2023-11-06 22:36:11,249 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:36:11,261 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:36:11,261 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-06 22:36:11,262 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:36:11,383 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:36:11,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 125 transitions, 254 flow [2023-11-06 22:36:11,502 INFO L124 PetriNetUnfolderBase]: 6/124 cut-off events. [2023-11-06 22:36:11,505 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:36:11,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 124 events. 6/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 228 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2023-11-06 22:36:11,513 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 125 transitions, 254 flow [2023-11-06 22:36:11,519 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 124 transitions, 251 flow [2023-11-06 22:36:11,526 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:36:11,540 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 124 transitions, 251 flow [2023-11-06 22:36:11,543 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 124 transitions, 251 flow [2023-11-06 22:36:11,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 124 transitions, 251 flow [2023-11-06 22:36:11,577 INFO L124 PetriNetUnfolderBase]: 6/124 cut-off events. [2023-11-06 22:36:11,578 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:36:11,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 124 events. 6/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 228 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2023-11-06 22:36:11,584 INFO L119 LiptonReduction]: Number of co-enabled transitions 4864 [2023-11-06 22:36:13,510 INFO L134 LiptonReduction]: Checked pairs total: 14471 [2023-11-06 22:36:13,510 INFO L136 LiptonReduction]: Total number of compositions: 72 [2023-11-06 22:36:13,537 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:36:13,545 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;@10f0afe2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:36:13,546 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-06 22:36:13,565 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:36:13,565 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2023-11-06 22:36:13,565 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:36:13,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:13,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:36:13,566 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:36:13,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:13,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1317715676, now seen corresponding path program 1 times [2023-11-06 22:36:13,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:13,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178818013] [2023-11-06 22:36:13,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:13,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:13,815 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 22:36:13,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:13,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178818013] [2023-11-06 22:36:13,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178818013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:13,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:36:13,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:36:13,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145134833] [2023-11-06 22:36:13,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:13,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:36:13,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:13,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:36:13,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:36:13,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 197 [2023-11-06 22:36:13,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 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 22:36:13,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:13,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 197 [2023-11-06 22:36:13,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:14,060 INFO L124 PetriNetUnfolderBase]: 106/409 cut-off events. [2023-11-06 22:36:14,060 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:36:14,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 409 events. 106/409 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2247 event pairs, 84 based on Foata normal form. 0/376 useless extension candidates. Maximal degree in co-relation 612. Up to 213 conditions per place. [2023-11-06 22:36:14,066 INFO L140 encePairwiseOnDemand]: 194/197 looper letters, 24 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-11-06 22:36:14,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 167 flow [2023-11-06 22:36:14,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:36:14,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:36:14,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2023-11-06 22:36:14,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6294416243654822 [2023-11-06 22:36:14,091 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2023-11-06 22:36:14,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2023-11-06 22:36:14,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:14,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2023-11-06 22:36:14,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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 22:36:14,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 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 22:36:14,108 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 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 22:36:14,110 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 113 flow. Second operand 3 states and 372 transitions. [2023-11-06 22:36:14,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 167 flow [2023-11-06 22:36:14,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:36:14,116 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 124 flow [2023-11-06 22:36:14,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2023-11-06 22:36:14,122 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-11-06 22:36:14,122 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 124 flow [2023-11-06 22:36:14,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 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 22:36:14,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:14,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:36:14,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:36:14,134 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:36:14,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:14,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1197002061, now seen corresponding path program 1 times [2023-11-06 22:36:14,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:14,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428851150] [2023-11-06 22:36:14,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:14,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:14,298 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 22:36:14,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:14,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428851150] [2023-11-06 22:36:14,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428851150] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:36:14,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821638940] [2023-11-06 22:36:14,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:14,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:36:14,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:36:14,303 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:36:14,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:36:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:14,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:36:14,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:36:14,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:36:14,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:36:14,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821638940] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:14,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:36:14,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-06 22:36:14,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381760605] [2023-11-06 22:36:14,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:14,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:36:14,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:14,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:36:14,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:36:14,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 197 [2023-11-06 22:36:14,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 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 22:36:14,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:14,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 197 [2023-11-06 22:36:14,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:14,645 INFO L124 PetriNetUnfolderBase]: 154/569 cut-off events. [2023-11-06 22:36:14,645 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:36:14,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 889 conditions, 569 events. 154/569 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3009 event pairs, 84 based on Foata normal form. 0/513 useless extension candidates. Maximal degree in co-relation 878. Up to 214 conditions per place. [2023-11-06 22:36:14,653 INFO L140 encePairwiseOnDemand]: 194/197 looper letters, 38 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-11-06 22:36:14,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 70 transitions, 232 flow [2023-11-06 22:36:14,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:36:14,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:36:14,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2023-11-06 22:36:14,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6514382402707276 [2023-11-06 22:36:14,660 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2023-11-06 22:36:14,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2023-11-06 22:36:14,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:14,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2023-11-06 22:36:14,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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 22:36:14,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 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 22:36:14,667 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 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 22:36:14,667 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 124 flow. Second operand 3 states and 385 transitions. [2023-11-06 22:36:14,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 70 transitions, 232 flow [2023-11-06 22:36:14,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 70 transitions, 228 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:36:14,670 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 132 flow [2023-11-06 22:36:14,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2023-11-06 22:36:14,672 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2023-11-06 22:36:14,673 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 132 flow [2023-11-06 22:36:14,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 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 22:36:14,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:14,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:36:14,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:36:14,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:36:14,876 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:36:14,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:14,877 INFO L85 PathProgramCache]: Analyzing trace with hash 110092722, now seen corresponding path program 1 times [2023-11-06 22:36:14,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:14,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713347125] [2023-11-06 22:36:14,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:14,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:15,064 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 22:36:15,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:15,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713347125] [2023-11-06 22:36:15,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713347125] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:36:15,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955680190] [2023-11-06 22:36:15,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:15,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:36:15,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:36:15,068 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:36:15,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:36:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:15,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:36:15,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:36:15,180 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 22:36:15,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:36:15,203 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 22:36:15,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955680190] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:36:15,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:36:15,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-06 22:36:15,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828072690] [2023-11-06 22:36:15,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:36:15,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:36:15,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:15,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:36:15,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:36:15,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 197 [2023-11-06 22:36:15,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 132 flow. Second operand has 6 states, 6 states have (on average 115.66666666666667) internal successors, (694), 6 states have internal predecessors, (694), 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 22:36:15,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:15,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 197 [2023-11-06 22:36:15,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:15,404 INFO L124 PetriNetUnfolderBase]: 154/578 cut-off events. [2023-11-06 22:36:15,404 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-11-06 22:36:15,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 578 events. 154/578 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3134 event pairs, 126 based on Foata normal form. 0/543 useless extension candidates. Maximal degree in co-relation 918. Up to 309 conditions per place. [2023-11-06 22:36:15,408 INFO L140 encePairwiseOnDemand]: 194/197 looper letters, 25 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-11-06 22:36:15,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 204 flow [2023-11-06 22:36:15,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:36:15,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:36:15,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 716 transitions. [2023-11-06 22:36:15,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6057529610829103 [2023-11-06 22:36:15,413 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 716 transitions. [2023-11-06 22:36:15,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 716 transitions. [2023-11-06 22:36:15,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:15,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 716 transitions. [2023-11-06 22:36:15,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 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 22:36:15,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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 22:36:15,422 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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 22:36:15,422 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 132 flow. Second operand 6 states and 716 transitions. [2023-11-06 22:36:15,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 204 flow [2023-11-06 22:36:15,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 60 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:36:15,425 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 166 flow [2023-11-06 22:36:15,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=166, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2023-11-06 22:36:15,426 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2023-11-06 22:36:15,426 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 166 flow [2023-11-06 22:36:15,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.66666666666667) internal successors, (694), 6 states have internal predecessors, (694), 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 22:36:15,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:15,428 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:36:15,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:36:15,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:36:15,634 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:36:15,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:15,635 INFO L85 PathProgramCache]: Analyzing trace with hash 973396028, now seen corresponding path program 2 times [2023-11-06 22:36:15,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:15,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004988247] [2023-11-06 22:36:15,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:15,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:15,792 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:36:15,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:15,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004988247] [2023-11-06 22:36:15,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004988247] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:36:15,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830631929] [2023-11-06 22:36:15,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:36:15,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:36:15,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:36:15,795 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:36:15,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:36:15,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:36:15,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:36:15,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:36:15,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:36:15,975 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:36:16,009 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-06 22:36:16,056 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:36:16,060 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-06 22:36:16,115 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:36:16,115 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2023-11-06 22:36:16,154 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:36:16,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:36:16,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830631929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:16,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:36:16,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 13 [2023-11-06 22:36:16,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595052094] [2023-11-06 22:36:16,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:16,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:36:16,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:16,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:36:16,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:36:16,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 197 [2023-11-06 22:36:16,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 166 flow. Second operand has 9 states, 9 states have (on average 93.33333333333333) internal successors, (840), 9 states have internal predecessors, (840), 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 22:36:16,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:16,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 197 [2023-11-06 22:36:16,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:17,291 INFO L124 PetriNetUnfolderBase]: 559/1270 cut-off events. [2023-11-06 22:36:17,291 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-06 22:36:17,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2468 conditions, 1270 events. 559/1270 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6581 event pairs, 293 based on Foata normal form. 0/1193 useless extension candidates. Maximal degree in co-relation 2434. Up to 632 conditions per place. [2023-11-06 22:36:17,302 INFO L140 encePairwiseOnDemand]: 182/197 looper letters, 113 selfloop transitions, 26 changer transitions 0/152 dead transitions. [2023-11-06 22:36:17,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 152 transitions, 628 flow [2023-11-06 22:36:17,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:36:17,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:36:17,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 964 transitions. [2023-11-06 22:36:17,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437112239142696 [2023-11-06 22:36:17,315 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 964 transitions. [2023-11-06 22:36:17,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 964 transitions. [2023-11-06 22:36:17,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:17,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 964 transitions. [2023-11-06 22:36:17,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 107.11111111111111) internal successors, (964), 9 states have internal predecessors, (964), 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 22:36:17,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 197.0) internal successors, (1970), 10 states have internal predecessors, (1970), 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 22:36:17,327 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 197.0) internal successors, (1970), 10 states have internal predecessors, (1970), 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 22:36:17,327 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 166 flow. Second operand 9 states and 964 transitions. [2023-11-06 22:36:17,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 152 transitions, 628 flow [2023-11-06 22:36:17,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 152 transitions, 614 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-06 22:36:17,334 INFO L231 Difference]: Finished difference. Result has 80 places, 91 transitions, 354 flow [2023-11-06 22:36:17,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=354, PETRI_PLACES=80, PETRI_TRANSITIONS=91} [2023-11-06 22:36:17,337 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 24 predicate places. [2023-11-06 22:36:17,337 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 91 transitions, 354 flow [2023-11-06 22:36:17,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 93.33333333333333) internal successors, (840), 9 states have internal predecessors, (840), 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 22:36:17,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:17,340 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:36:17,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-06 22:36:17,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:36:17,546 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:36:17,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:17,546 INFO L85 PathProgramCache]: Analyzing trace with hash -833368996, now seen corresponding path program 1 times [2023-11-06 22:36:17,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:17,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790590407] [2023-11-06 22:36:17,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:17,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:36:17,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:17,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790590407] [2023-11-06 22:36:17,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790590407] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:36:17,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765236987] [2023-11-06 22:36:17,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:17,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:36:17,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:36:17,688 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:36:17,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:36:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:17,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:36:17,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:36:17,801 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:36:17,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:36:17,861 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:36:17,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765236987] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:36:17,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:36:17,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-06 22:36:17,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026921052] [2023-11-06 22:36:17,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:36:17,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:36:17,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:17,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:36:17,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:36:17,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 197 [2023-11-06 22:36:17,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 91 transitions, 354 flow. Second operand has 12 states, 12 states have (on average 115.33333333333333) internal successors, (1384), 12 states have internal predecessors, (1384), 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 22:36:17,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:17,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 197 [2023-11-06 22:36:17,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:18,131 INFO L124 PetriNetUnfolderBase]: 227/800 cut-off events. [2023-11-06 22:36:18,131 INFO L125 PetriNetUnfolderBase]: For 187/193 co-relation queries the response was YES. [2023-11-06 22:36:18,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1630 conditions, 800 events. 227/800 cut-off events. For 187/193 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4728 event pairs, 137 based on Foata normal form. 6/771 useless extension candidates. Maximal degree in co-relation 1571. Up to 398 conditions per place. [2023-11-06 22:36:18,138 INFO L140 encePairwiseOnDemand]: 194/197 looper letters, 27 selfloop transitions, 11 changer transitions 0/97 dead transitions. [2023-11-06 22:36:18,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 97 transitions, 466 flow [2023-11-06 22:36:18,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:36:18,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:36:18,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1409 transitions. [2023-11-06 22:36:18,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5960236886632826 [2023-11-06 22:36:18,145 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1409 transitions. [2023-11-06 22:36:18,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1409 transitions. [2023-11-06 22:36:18,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:18,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1409 transitions. [2023-11-06 22:36:18,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 117.41666666666667) internal successors, (1409), 12 states have internal predecessors, (1409), 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 22:36:18,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 197.0) internal successors, (2561), 13 states have internal predecessors, (2561), 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 22:36:18,158 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 197.0) internal successors, (2561), 13 states have internal predecessors, (2561), 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 22:36:18,158 INFO L175 Difference]: Start difference. First operand has 80 places, 91 transitions, 354 flow. Second operand 12 states and 1409 transitions. [2023-11-06 22:36:18,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 97 transitions, 466 flow [2023-11-06 22:36:18,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 97 transitions, 463 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:36:18,166 INFO L231 Difference]: Finished difference. Result has 95 places, 97 transitions, 435 flow [2023-11-06 22:36:18,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=435, PETRI_PLACES=95, PETRI_TRANSITIONS=97} [2023-11-06 22:36:18,167 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 39 predicate places. [2023-11-06 22:36:18,167 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 97 transitions, 435 flow [2023-11-06 22:36:18,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 115.33333333333333) internal successors, (1384), 12 states have internal predecessors, (1384), 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 22:36:18,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:18,169 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:36:18,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:36:18,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:36:18,375 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:36:18,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:18,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1945254044, now seen corresponding path program 2 times [2023-11-06 22:36:18,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:18,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363265698] [2023-11-06 22:36:18,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:18,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:36:18,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:18,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363265698] [2023-11-06 22:36:18,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363265698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:18,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:36:18,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:36:18,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051239075] [2023-11-06 22:36:18,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:18,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:36:18,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:18,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:36:18,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:36:19,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 197 [2023-11-06 22:36:19,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 97 transitions, 435 flow. Second operand has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 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 22:36:19,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:19,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 197 [2023-11-06 22:36:19,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:19,638 INFO L124 PetriNetUnfolderBase]: 700/1709 cut-off events. [2023-11-06 22:36:19,638 INFO L125 PetriNetUnfolderBase]: For 387/390 co-relation queries the response was YES. [2023-11-06 22:36:19,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3854 conditions, 1709 events. 700/1709 cut-off events. For 387/390 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 10183 event pairs, 240 based on Foata normal form. 0/1644 useless extension candidates. Maximal degree in co-relation 3771. Up to 1077 conditions per place. [2023-11-06 22:36:19,653 INFO L140 encePairwiseOnDemand]: 182/197 looper letters, 129 selfloop transitions, 48 changer transitions 0/196 dead transitions. [2023-11-06 22:36:19,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 196 transitions, 1087 flow [2023-11-06 22:36:19,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:36:19,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:36:19,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 722 transitions. [2023-11-06 22:36:19,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.61082910321489 [2023-11-06 22:36:19,658 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 722 transitions. [2023-11-06 22:36:19,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 722 transitions. [2023-11-06 22:36:19,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:19,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 722 transitions. [2023-11-06 22:36:19,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 120.33333333333333) internal successors, (722), 6 states have internal predecessors, (722), 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 22:36:19,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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 22:36:19,666 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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 22:36:19,666 INFO L175 Difference]: Start difference. First operand has 95 places, 97 transitions, 435 flow. Second operand 6 states and 722 transitions. [2023-11-06 22:36:19,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 196 transitions, 1087 flow [2023-11-06 22:36:19,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 196 transitions, 1039 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-11-06 22:36:19,678 INFO L231 Difference]: Finished difference. Result has 100 places, 139 transitions, 723 flow [2023-11-06 22:36:19,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=723, PETRI_PLACES=100, PETRI_TRANSITIONS=139} [2023-11-06 22:36:19,681 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 44 predicate places. [2023-11-06 22:36:19,682 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 139 transitions, 723 flow [2023-11-06 22:36:19,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 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 22:36:19,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:19,683 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:36:19,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:36:19,683 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:36:19,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:19,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1996971318, now seen corresponding path program 1 times [2023-11-06 22:36:19,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:19,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991927867] [2023-11-06 22:36:19,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:19,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:20,112 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:36:20,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:20,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991927867] [2023-11-06 22:36:20,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991927867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:20,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:36:20,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:36:20,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548256223] [2023-11-06 22:36:20,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:20,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:36:20,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:20,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:36:20,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:36:20,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 197 [2023-11-06 22:36:20,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 139 transitions, 723 flow. Second operand has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 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 22:36:20,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:20,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 197 [2023-11-06 22:36:20,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:20,904 INFO L124 PetriNetUnfolderBase]: 1186/2480 cut-off events. [2023-11-06 22:36:20,905 INFO L125 PetriNetUnfolderBase]: For 1700/1737 co-relation queries the response was YES. [2023-11-06 22:36:20,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7250 conditions, 2480 events. 1186/2480 cut-off events. For 1700/1737 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 13726 event pairs, 484 based on Foata normal form. 0/2377 useless extension candidates. Maximal degree in co-relation 7187. Up to 2052 conditions per place. [2023-11-06 22:36:20,927 INFO L140 encePairwiseOnDemand]: 182/197 looper letters, 157 selfloop transitions, 78 changer transitions 0/240 dead transitions. [2023-11-06 22:36:20,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 240 transitions, 1617 flow [2023-11-06 22:36:20,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:36:20,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:36:20,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 654 transitions. [2023-11-06 22:36:20,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5532994923857868 [2023-11-06 22:36:20,931 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 654 transitions. [2023-11-06 22:36:20,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 654 transitions. [2023-11-06 22:36:20,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:20,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 654 transitions. [2023-11-06 22:36:20,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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 22:36:20,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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 22:36:20,937 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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 22:36:20,937 INFO L175 Difference]: Start difference. First operand has 100 places, 139 transitions, 723 flow. Second operand 6 states and 654 transitions. [2023-11-06 22:36:20,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 240 transitions, 1617 flow [2023-11-06 22:36:20,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 240 transitions, 1617 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:36:20,952 INFO L231 Difference]: Finished difference. Result has 110 places, 207 transitions, 1429 flow [2023-11-06 22:36:20,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1429, PETRI_PLACES=110, PETRI_TRANSITIONS=207} [2023-11-06 22:36:20,954 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 54 predicate places. [2023-11-06 22:36:20,954 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 207 transitions, 1429 flow [2023-11-06 22:36:20,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 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 22:36:20,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:20,955 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:36:20,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:36:20,955 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:36:20,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:20,955 INFO L85 PathProgramCache]: Analyzing trace with hash -987235948, now seen corresponding path program 1 times [2023-11-06 22:36:20,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:20,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323971792] [2023-11-06 22:36:20,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:20,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:21,392 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:36:21,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:21,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323971792] [2023-11-06 22:36:21,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323971792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:21,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:36:21,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:36:21,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939580887] [2023-11-06 22:36:21,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:21,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:36:21,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:21,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:36:21,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:36:21,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 197 [2023-11-06 22:36:21,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 207 transitions, 1429 flow. Second operand has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 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 22:36:21,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:21,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 197 [2023-11-06 22:36:21,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:22,603 INFO L124 PetriNetUnfolderBase]: 1374/2899 cut-off events. [2023-11-06 22:36:22,604 INFO L125 PetriNetUnfolderBase]: For 3700/3744 co-relation queries the response was YES. [2023-11-06 22:36:22,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9933 conditions, 2899 events. 1374/2899 cut-off events. For 3700/3744 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 16944 event pairs, 398 based on Foata normal form. 0/2786 useless extension candidates. Maximal degree in co-relation 9865. Up to 2307 conditions per place. [2023-11-06 22:36:22,635 INFO L140 encePairwiseOnDemand]: 174/197 looper letters, 229 selfloop transitions, 123 changer transitions 8/367 dead transitions. [2023-11-06 22:36:22,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 367 transitions, 2933 flow [2023-11-06 22:36:22,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:36:22,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:36:22,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 701 transitions. [2023-11-06 22:36:22,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5930626057529611 [2023-11-06 22:36:22,640 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 701 transitions. [2023-11-06 22:36:22,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 701 transitions. [2023-11-06 22:36:22,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:22,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 701 transitions. [2023-11-06 22:36:22,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.83333333333333) internal successors, (701), 6 states have internal predecessors, (701), 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 22:36:22,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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 22:36:22,647 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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 22:36:22,647 INFO L175 Difference]: Start difference. First operand has 110 places, 207 transitions, 1429 flow. Second operand 6 states and 701 transitions. [2023-11-06 22:36:22,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 367 transitions, 2933 flow [2023-11-06 22:36:22,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 367 transitions, 2915 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-11-06 22:36:22,684 INFO L231 Difference]: Finished difference. Result has 120 places, 302 transitions, 2479 flow [2023-11-06 22:36:22,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=1411, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2479, PETRI_PLACES=120, PETRI_TRANSITIONS=302} [2023-11-06 22:36:22,688 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 64 predicate places. [2023-11-06 22:36:22,688 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 302 transitions, 2479 flow [2023-11-06 22:36:22,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 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 22:36:22,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:22,689 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:36:22,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:36:22,689 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:36:22,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:22,690 INFO L85 PathProgramCache]: Analyzing trace with hash -638401422, now seen corresponding path program 1 times [2023-11-06 22:36:22,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:22,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841751006] [2023-11-06 22:36:22,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:22,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:23,598 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:36:23,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:23,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841751006] [2023-11-06 22:36:23,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841751006] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:36:23,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109175173] [2023-11-06 22:36:23,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:23,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:36:23,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:36:23,601 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:36:23,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:36:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:23,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-06 22:36:23,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:36:23,813 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-06 22:36:23,847 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:36:23,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:36:23,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109175173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:23,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:36:23,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-11-06 22:36:23,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868602440] [2023-11-06 22:36:23,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:23,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:36:23,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:23,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:36:23,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:36:24,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 197 [2023-11-06 22:36:24,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 302 transitions, 2479 flow. Second operand has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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 22:36:24,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:24,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 197 [2023-11-06 22:36:24,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:24,849 INFO L124 PetriNetUnfolderBase]: 1167/2897 cut-off events. [2023-11-06 22:36:24,850 INFO L125 PetriNetUnfolderBase]: For 5988/6094 co-relation queries the response was YES. [2023-11-06 22:36:24,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10909 conditions, 2897 events. 1167/2897 cut-off events. For 5988/6094 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 19846 event pairs, 140 based on Foata normal form. 18/2852 useless extension candidates. Maximal degree in co-relation 10836. Up to 663 conditions per place. [2023-11-06 22:36:24,891 INFO L140 encePairwiseOnDemand]: 189/197 looper letters, 107 selfloop transitions, 12 changer transitions 0/361 dead transitions. [2023-11-06 22:36:24,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 361 transitions, 3195 flow [2023-11-06 22:36:24,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:36:24,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:36:24,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 702 transitions. [2023-11-06 22:36:24,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5939086294416244 [2023-11-06 22:36:24,895 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 702 transitions. [2023-11-06 22:36:24,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 702 transitions. [2023-11-06 22:36:24,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:24,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 702 transitions. [2023-11-06 22:36:24,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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 22:36:24,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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 22:36:24,903 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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 22:36:24,903 INFO L175 Difference]: Start difference. First operand has 120 places, 302 transitions, 2479 flow. Second operand 6 states and 702 transitions. [2023-11-06 22:36:24,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 361 transitions, 3195 flow [2023-11-06 22:36:24,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 361 transitions, 3057 flow, removed 69 selfloop flow, removed 0 redundant places. [2023-11-06 22:36:24,972 INFO L231 Difference]: Finished difference. Result has 128 places, 310 transitions, 2471 flow [2023-11-06 22:36:24,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2365, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2471, PETRI_PLACES=128, PETRI_TRANSITIONS=310} [2023-11-06 22:36:24,973 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 72 predicate places. [2023-11-06 22:36:24,973 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 310 transitions, 2471 flow [2023-11-06 22:36:24,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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 22:36:24,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:24,974 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:36:24,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:36:25,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-06 22:36:25,181 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:36:25,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:25,181 INFO L85 PathProgramCache]: Analyzing trace with hash 515962916, now seen corresponding path program 2 times [2023-11-06 22:36:25,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:25,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718938172] [2023-11-06 22:36:25,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:25,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:36:25,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:25,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718938172] [2023-11-06 22:36:25,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718938172] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:36:25,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088085906] [2023-11-06 22:36:25,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:36:25,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:36:25,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:36:25,956 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:36:25,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:36:26,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:36:26,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:36:26,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:36:26,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:36:26,187 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-06 22:36:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:36:26,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:36:26,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088085906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:26,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:36:26,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-11-06 22:36:26,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575713319] [2023-11-06 22:36:26,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:26,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:36:26,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:26,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:36:26,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:36:26,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 197 [2023-11-06 22:36:26,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 310 transitions, 2471 flow. Second operand has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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 22:36:26,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:26,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 197 [2023-11-06 22:36:26,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:27,908 INFO L124 PetriNetUnfolderBase]: 2349/5801 cut-off events. [2023-11-06 22:36:27,909 INFO L125 PetriNetUnfolderBase]: For 12239/12423 co-relation queries the response was YES. [2023-11-06 22:36:27,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22325 conditions, 5801 events. 2349/5801 cut-off events. For 12239/12423 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 44552 event pairs, 236 based on Foata normal form. 14/5711 useless extension candidates. Maximal degree in co-relation 22247. Up to 1312 conditions per place. [2023-11-06 22:36:27,991 INFO L140 encePairwiseOnDemand]: 189/197 looper letters, 133 selfloop transitions, 19 changer transitions 0/394 dead transitions. [2023-11-06 22:36:27,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 394 transitions, 3413 flow [2023-11-06 22:36:27,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:36:27,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:36:27,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 711 transitions. [2023-11-06 22:36:27,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6015228426395939 [2023-11-06 22:36:27,995 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 711 transitions. [2023-11-06 22:36:27,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 711 transitions. [2023-11-06 22:36:27,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:27,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 711 transitions. [2023-11-06 22:36:27,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.5) internal successors, (711), 6 states have internal predecessors, (711), 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 22:36:28,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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 22:36:28,002 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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 22:36:28,002 INFO L175 Difference]: Start difference. First operand has 128 places, 310 transitions, 2471 flow. Second operand 6 states and 711 transitions. [2023-11-06 22:36:28,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 394 transitions, 3413 flow [2023-11-06 22:36:28,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 394 transitions, 3399 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:36:28,095 INFO L231 Difference]: Finished difference. Result has 134 places, 322 transitions, 2648 flow [2023-11-06 22:36:28,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2463, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2648, PETRI_PLACES=134, PETRI_TRANSITIONS=322} [2023-11-06 22:36:28,097 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2023-11-06 22:36:28,097 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 322 transitions, 2648 flow [2023-11-06 22:36:28,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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 22:36:28,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:28,098 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:36:28,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:36:28,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:36:28,305 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:36:28,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:28,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1396806757, now seen corresponding path program 1 times [2023-11-06 22:36:28,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:28,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192709351] [2023-11-06 22:36:28,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:28,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:28,691 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:36:28,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:28,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192709351] [2023-11-06 22:36:28,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192709351] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:36:28,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646758835] [2023-11-06 22:36:28,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:28,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:36:28,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:36:28,694 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:36:28,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:36:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:28,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-06 22:36:28,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:36:29,008 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-06 22:36:29,077 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:36:29,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:36:29,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646758835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:29,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:36:29,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-11-06 22:36:29,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018153578] [2023-11-06 22:36:29,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:29,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:36:29,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:29,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:36:29,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:36:29,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 197 [2023-11-06 22:36:29,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 322 transitions, 2648 flow. Second operand has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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 22:36:29,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:29,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 197 [2023-11-06 22:36:29,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:30,720 INFO L124 PetriNetUnfolderBase]: 2044/5118 cut-off events. [2023-11-06 22:36:30,720 INFO L125 PetriNetUnfolderBase]: For 12462/12630 co-relation queries the response was YES. [2023-11-06 22:36:30,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20197 conditions, 5118 events. 2044/5118 cut-off events. For 12462/12630 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 38912 event pairs, 216 based on Foata normal form. 18/5033 useless extension candidates. Maximal degree in co-relation 20116. Up to 1160 conditions per place. [2023-11-06 22:36:30,780 INFO L140 encePairwiseOnDemand]: 190/197 looper letters, 133 selfloop transitions, 22 changer transitions 0/397 dead transitions. [2023-11-06 22:36:30,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 397 transitions, 3505 flow [2023-11-06 22:36:30,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:36:30,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:36:30,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 825 transitions. [2023-11-06 22:36:30,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5982596084118926 [2023-11-06 22:36:30,784 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 825 transitions. [2023-11-06 22:36:30,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 825 transitions. [2023-11-06 22:36:30,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:30,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 825 transitions. [2023-11-06 22:36:30,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 117.85714285714286) internal successors, (825), 7 states have internal predecessors, (825), 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 22:36:30,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 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 22:36:30,792 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 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 22:36:30,792 INFO L175 Difference]: Start difference. First operand has 134 places, 322 transitions, 2648 flow. Second operand 7 states and 825 transitions. [2023-11-06 22:36:30,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 397 transitions, 3505 flow [2023-11-06 22:36:30,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 397 transitions, 3502 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:36:30,883 INFO L231 Difference]: Finished difference. Result has 142 places, 325 transitions, 2745 flow [2023-11-06 22:36:30,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2615, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2745, PETRI_PLACES=142, PETRI_TRANSITIONS=325} [2023-11-06 22:36:30,885 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 86 predicate places. [2023-11-06 22:36:30,885 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 325 transitions, 2745 flow [2023-11-06 22:36:30,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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 22:36:30,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:30,886 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:36:30,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:36:31,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:36:31,092 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:36:31,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:31,093 INFO L85 PathProgramCache]: Analyzing trace with hash 176978970, now seen corresponding path program 3 times [2023-11-06 22:36:31,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:31,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918017774] [2023-11-06 22:36:31,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:31,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:31,540 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:36:31,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:31,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918017774] [2023-11-06 22:36:31,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918017774] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:36:31,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624234180] [2023-11-06 22:36:31,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:36:31,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:36:31,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:36:31,543 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:36:31,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:36:31,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-06 22:36:31,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:36:31,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-06 22:36:31,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:36:31,742 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-06 22:36:31,828 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:36:31,828 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:36:31,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624234180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:31,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:36:31,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-11-06 22:36:31,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903149158] [2023-11-06 22:36:31,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:31,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:36:31,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:31,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:36:31,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:36:32,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 197 [2023-11-06 22:36:32,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 325 transitions, 2745 flow. Second operand has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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 22:36:32,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:32,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 197 [2023-11-06 22:36:32,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:33,479 INFO L124 PetriNetUnfolderBase]: 2068/5209 cut-off events. [2023-11-06 22:36:33,479 INFO L125 PetriNetUnfolderBase]: For 13597/13788 co-relation queries the response was YES. [2023-11-06 22:36:33,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20567 conditions, 5209 events. 2068/5209 cut-off events. For 13597/13788 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 40699 event pairs, 286 based on Foata normal form. 19/5122 useless extension candidates. Maximal degree in co-relation 20482. Up to 1521 conditions per place. [2023-11-06 22:36:33,549 INFO L140 encePairwiseOnDemand]: 190/197 looper letters, 121 selfloop transitions, 17 changer transitions 0/380 dead transitions. [2023-11-06 22:36:33,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 380 transitions, 3472 flow [2023-11-06 22:36:33,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:36:33,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:36:33,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 700 transitions. [2023-11-06 22:36:33,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5922165820642978 [2023-11-06 22:36:33,553 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 700 transitions. [2023-11-06 22:36:33,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 700 transitions. [2023-11-06 22:36:33,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:33,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 700 transitions. [2023-11-06 22:36:33,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 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 22:36:33,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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 22:36:33,559 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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 22:36:33,559 INFO L175 Difference]: Start difference. First operand has 142 places, 325 transitions, 2745 flow. Second operand 6 states and 700 transitions. [2023-11-06 22:36:33,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 380 transitions, 3472 flow [2023-11-06 22:36:33,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 380 transitions, 3422 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-11-06 22:36:33,654 INFO L231 Difference]: Finished difference. Result has 145 places, 327 transitions, 2758 flow [2023-11-06 22:36:33,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2652, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2758, PETRI_PLACES=145, PETRI_TRANSITIONS=327} [2023-11-06 22:36:33,655 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 89 predicate places. [2023-11-06 22:36:33,656 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 327 transitions, 2758 flow [2023-11-06 22:36:33,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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 22:36:33,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:33,657 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:36:33,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:36:33,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:36:33,863 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:36:33,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:33,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1816670381, now seen corresponding path program 1 times [2023-11-06 22:36:33,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:33,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547826333] [2023-11-06 22:36:33,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:33,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:34,280 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-06 22:36:34,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:34,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547826333] [2023-11-06 22:36:34,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547826333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:34,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:36:34,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:36:34,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736524761] [2023-11-06 22:36:34,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:34,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:36:34,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:34,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:36:34,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:36:34,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 197 [2023-11-06 22:36:34,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 327 transitions, 2758 flow. Second operand has 6 states, 6 states have (on average 103.0) internal successors, (618), 6 states have internal predecessors, (618), 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 22:36:34,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:34,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 197 [2023-11-06 22:36:34,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:36,368 INFO L124 PetriNetUnfolderBase]: 2893/6416 cut-off events. [2023-11-06 22:36:36,368 INFO L125 PetriNetUnfolderBase]: For 18576/18737 co-relation queries the response was YES. [2023-11-06 22:36:36,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28054 conditions, 6416 events. 2893/6416 cut-off events. For 18576/18737 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 47340 event pairs, 562 based on Foata normal form. 67/6385 useless extension candidates. Maximal degree in co-relation 27968. Up to 4592 conditions per place. [2023-11-06 22:36:36,432 INFO L140 encePairwiseOnDemand]: 186/197 looper letters, 305 selfloop transitions, 84 changer transitions 0/440 dead transitions. [2023-11-06 22:36:36,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 440 transitions, 4566 flow [2023-11-06 22:36:36,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:36:36,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:36:36,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 691 transitions. [2023-11-06 22:36:36,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5846023688663282 [2023-11-06 22:36:36,436 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 691 transitions. [2023-11-06 22:36:36,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 691 transitions. [2023-11-06 22:36:36,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:36,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 691 transitions. [2023-11-06 22:36:36,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 115.16666666666667) internal successors, (691), 6 states have internal predecessors, (691), 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 22:36:36,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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 22:36:36,444 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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 22:36:36,444 INFO L175 Difference]: Start difference. First operand has 145 places, 327 transitions, 2758 flow. Second operand 6 states and 691 transitions. [2023-11-06 22:36:36,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 440 transitions, 4566 flow [2023-11-06 22:36:36,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 440 transitions, 4554 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:36:36,561 INFO L231 Difference]: Finished difference. Result has 153 places, 366 transitions, 3516 flow [2023-11-06 22:36:36,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2746, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3516, PETRI_PLACES=153, PETRI_TRANSITIONS=366} [2023-11-06 22:36:36,563 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 97 predicate places. [2023-11-06 22:36:36,563 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 366 transitions, 3516 flow [2023-11-06 22:36:36,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 103.0) internal successors, (618), 6 states have internal predecessors, (618), 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 22:36:36,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:36,564 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:36:36,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:36:36,565 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:36:36,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:36,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1171202132, now seen corresponding path program 1 times [2023-11-06 22:36:36,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:36,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132471450] [2023-11-06 22:36:36,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:36,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:36,652 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:36:36,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:36,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132471450] [2023-11-06 22:36:36,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132471450] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:36:36,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045857669] [2023-11-06 22:36:36,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:36,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:36:36,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:36:36,655 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:36:36,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:36:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:36,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:36:36,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:36:36,851 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:36:36,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:36:36,889 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:36:36,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045857669] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:36:36,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:36:36,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-06 22:36:36,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524088715] [2023-11-06 22:36:36,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:36:36,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:36:36,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:36,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:36:36,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:36:36,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 197 [2023-11-06 22:36:36,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 366 transitions, 3516 flow. Second operand has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 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 22:36:36,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:36,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 197 [2023-11-06 22:36:36,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:39,688 INFO L124 PetriNetUnfolderBase]: 3916/9623 cut-off events. [2023-11-06 22:36:39,688 INFO L125 PetriNetUnfolderBase]: For 34975/35464 co-relation queries the response was YES. [2023-11-06 22:36:39,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42484 conditions, 9623 events. 3916/9623 cut-off events. For 34975/35464 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 73406 event pairs, 403 based on Foata normal form. 125/9575 useless extension candidates. Maximal degree in co-relation 42395. Up to 2284 conditions per place. [2023-11-06 22:36:39,780 INFO L140 encePairwiseOnDemand]: 193/197 looper letters, 195 selfloop transitions, 23 changer transitions 0/490 dead transitions. [2023-11-06 22:36:39,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 490 transitions, 5178 flow [2023-11-06 22:36:39,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:36:39,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:36:39,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 763 transitions. [2023-11-06 22:36:39,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6455160744500846 [2023-11-06 22:36:39,785 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 763 transitions. [2023-11-06 22:36:39,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 763 transitions. [2023-11-06 22:36:39,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:39,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 763 transitions. [2023-11-06 22:36:39,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 127.16666666666667) internal successors, (763), 6 states have internal predecessors, (763), 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 22:36:39,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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 22:36:39,791 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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 22:36:39,791 INFO L175 Difference]: Start difference. First operand has 153 places, 366 transitions, 3516 flow. Second operand 6 states and 763 transitions. [2023-11-06 22:36:39,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 490 transitions, 5178 flow [2023-11-06 22:36:40,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 490 transitions, 5072 flow, removed 53 selfloop flow, removed 0 redundant places. [2023-11-06 22:36:40,030 INFO L231 Difference]: Finished difference. Result has 162 places, 375 transitions, 3646 flow [2023-11-06 22:36:40,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=3464, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3646, PETRI_PLACES=162, PETRI_TRANSITIONS=375} [2023-11-06 22:36:40,032 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 106 predicate places. [2023-11-06 22:36:40,032 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 375 transitions, 3646 flow [2023-11-06 22:36:40,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 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 22:36:40,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:40,033 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:36:40,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:36:40,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:36:40,240 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:36:40,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:40,241 INFO L85 PathProgramCache]: Analyzing trace with hash 534822160, now seen corresponding path program 1 times [2023-11-06 22:36:40,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:40,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081161211] [2023-11-06 22:36:40,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:40,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:41,188 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:36:41,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:41,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081161211] [2023-11-06 22:36:41,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081161211] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:36:41,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514265072] [2023-11-06 22:36:41,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:41,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:36:41,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:36:41,191 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:36:41,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:36:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:41,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-06 22:36:41,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:36:41,895 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:36:41,947 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 22:36:42,018 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-11-06 22:36:42,095 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2023-11-06 22:36:42,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:36:42,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:36:42,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:36:42,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:36:42,219 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2023-11-06 22:36:42,268 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:36:42,269 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:36:43,486 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:36:43,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514265072] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:36:43,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:36:43,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-11-06 22:36:43,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100477315] [2023-11-06 22:36:43,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:36:43,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-06 22:36:43,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:43,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-06 22:36:43,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2023-11-06 22:36:52,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 197 [2023-11-06 22:36:52,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 375 transitions, 3646 flow. Second operand has 31 states, 31 states have (on average 87.83870967741936) internal successors, (2723), 31 states have internal predecessors, (2723), 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 22:36:52,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:52,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 197 [2023-11-06 22:36:52,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:59,815 INFO L124 PetriNetUnfolderBase]: 5459/12008 cut-off events. [2023-11-06 22:36:59,815 INFO L125 PetriNetUnfolderBase]: For 50694/51158 co-relation queries the response was YES. [2023-11-06 22:36:59,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58157 conditions, 12008 events. 5459/12008 cut-off events. For 50694/51158 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 87944 event pairs, 609 based on Foata normal form. 31/11872 useless extension candidates. Maximal degree in co-relation 58064. Up to 4007 conditions per place. [2023-11-06 22:36:59,944 INFO L140 encePairwiseOnDemand]: 175/197 looper letters, 720 selfloop transitions, 140 changer transitions 8/933 dead transitions. [2023-11-06 22:36:59,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 933 transitions, 10483 flow [2023-11-06 22:36:59,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:36:59,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:36:59,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1511 transitions. [2023-11-06 22:36:59,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.511336717428088 [2023-11-06 22:36:59,952 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1511 transitions. [2023-11-06 22:36:59,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1511 transitions. [2023-11-06 22:36:59,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:59,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1511 transitions. [2023-11-06 22:36:59,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 100.73333333333333) internal successors, (1511), 15 states have internal predecessors, (1511), 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 22:36:59,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 197.0) internal successors, (3152), 16 states have internal predecessors, (3152), 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 22:36:59,965 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 197.0) internal successors, (3152), 16 states have internal predecessors, (3152), 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 22:36:59,966 INFO L175 Difference]: Start difference. First operand has 162 places, 375 transitions, 3646 flow. Second operand 15 states and 1511 transitions. [2023-11-06 22:36:59,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 933 transitions, 10483 flow [2023-11-06 22:37:00,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 933 transitions, 10355 flow, removed 48 selfloop flow, removed 1 redundant places. [2023-11-06 22:37:00,227 INFO L231 Difference]: Finished difference. Result has 185 places, 486 transitions, 5541 flow [2023-11-06 22:37:00,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=3610, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5541, PETRI_PLACES=185, PETRI_TRANSITIONS=486} [2023-11-06 22:37:00,228 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 129 predicate places. [2023-11-06 22:37:00,228 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 486 transitions, 5541 flow [2023-11-06 22:37:00,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 87.83870967741936) internal successors, (2723), 31 states have internal predecessors, (2723), 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 22:37:00,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:37:00,230 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:37:00,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:37:00,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:37:00,437 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:37:00,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:37:00,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1031131013, now seen corresponding path program 1 times [2023-11-06 22:37:00,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:37:00,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313170594] [2023-11-06 22:37:00,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:00,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:37:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:01,447 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:37:01,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:37:01,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313170594] [2023-11-06 22:37:01,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313170594] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:37:01,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038310590] [2023-11-06 22:37:01,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:01,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:37:01,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:37:01,449 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:37:01,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:37:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:01,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-06 22:37:01,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:37:02,035 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:37:02,090 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-06 22:37:02,155 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-11-06 22:37:02,224 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-11-06 22:37:02,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:02,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:02,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:02,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:02,302 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 41 [2023-11-06 22:37:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:37:02,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:37:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:37:03,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038310590] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:37:03,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:37:03,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-11-06 22:37:03,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813292735] [2023-11-06 22:37:03,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:37:03,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-06 22:37:03,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:37:03,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-06 22:37:03,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2023-11-06 22:37:13,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 197 [2023-11-06 22:37:13,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 486 transitions, 5541 flow. Second operand has 31 states, 31 states have (on average 87.35483870967742) internal successors, (2708), 31 states have internal predecessors, (2708), 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 22:37:13,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:37:13,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 197 [2023-11-06 22:37:13,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:37:21,162 INFO L124 PetriNetUnfolderBase]: 7032/15656 cut-off events. [2023-11-06 22:37:21,163 INFO L125 PetriNetUnfolderBase]: For 83374/83914 co-relation queries the response was YES. [2023-11-06 22:37:21,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81230 conditions, 15656 events. 7032/15656 cut-off events. For 83374/83914 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 122804 event pairs, 669 based on Foata normal form. 128/15733 useless extension candidates. Maximal degree in co-relation 81125. Up to 5371 conditions per place. [2023-11-06 22:37:21,331 INFO L140 encePairwiseOnDemand]: 174/197 looper letters, 702 selfloop transitions, 271 changer transitions 17/1055 dead transitions. [2023-11-06 22:37:21,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 1055 transitions, 13283 flow [2023-11-06 22:37:21,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:37:21,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-06 22:37:21,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1945 transitions. [2023-11-06 22:37:21,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4936548223350254 [2023-11-06 22:37:21,343 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1945 transitions. [2023-11-06 22:37:21,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1945 transitions. [2023-11-06 22:37:21,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:37:21,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1945 transitions. [2023-11-06 22:37:21,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 97.25) internal successors, (1945), 20 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:37:21,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 197.0) internal successors, (4137), 21 states have internal predecessors, (4137), 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 22:37:21,359 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 197.0) internal successors, (4137), 21 states have internal predecessors, (4137), 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 22:37:21,359 INFO L175 Difference]: Start difference. First operand has 185 places, 486 transitions, 5541 flow. Second operand 20 states and 1945 transitions. [2023-11-06 22:37:21,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 1055 transitions, 13283 flow [2023-11-06 22:37:21,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 1055 transitions, 13183 flow, removed 37 selfloop flow, removed 2 redundant places. [2023-11-06 22:37:21,807 INFO L231 Difference]: Finished difference. Result has 218 places, 655 transitions, 8873 flow [2023-11-06 22:37:21,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=5473, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=8873, PETRI_PLACES=218, PETRI_TRANSITIONS=655} [2023-11-06 22:37:21,808 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 162 predicate places. [2023-11-06 22:37:21,808 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 655 transitions, 8873 flow [2023-11-06 22:37:21,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 87.35483870967742) internal successors, (2708), 31 states have internal predecessors, (2708), 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 22:37:21,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:37:21,808 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:37:21,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:37:22,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:37:22,009 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:37:22,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:37:22,009 INFO L85 PathProgramCache]: Analyzing trace with hash 804821970, now seen corresponding path program 2 times [2023-11-06 22:37:22,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:37:22,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955444994] [2023-11-06 22:37:22,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:22,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:37:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:22,907 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:37:22,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:37:22,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955444994] [2023-11-06 22:37:22,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955444994] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:37:22,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893864800] [2023-11-06 22:37:22,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:37:22,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:37:22,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:37:22,909 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:37:22,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:37:23,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:37:23,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:37:23,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-06 22:37:23,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:37:23,417 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:37:23,468 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 22:37:23,523 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-11-06 22:37:23,583 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2023-11-06 22:37:23,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:23,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:23,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:23,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:23,658 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2023-11-06 22:37:23,711 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:37:23,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:37:24,592 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:37:24,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893864800] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:37:24,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:37:24,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-11-06 22:37:24,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714416293] [2023-11-06 22:37:24,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:37:24,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-06 22:37:24,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:37:24,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-06 22:37:24,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2023-11-06 22:37:32,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 197 [2023-11-06 22:37:32,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 655 transitions, 8873 flow. Second operand has 31 states, 31 states have (on average 87.83870967741936) internal successors, (2723), 31 states have internal predecessors, (2723), 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 22:37:32,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:37:32,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 197 [2023-11-06 22:37:32,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:37:42,840 INFO L124 PetriNetUnfolderBase]: 8178/17878 cut-off events. [2023-11-06 22:37:42,840 INFO L125 PetriNetUnfolderBase]: For 133027/133658 co-relation queries the response was YES. [2023-11-06 22:37:42,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101101 conditions, 17878 events. 8178/17878 cut-off events. For 133027/133658 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 142945 event pairs, 804 based on Foata normal form. 61/17831 useless extension candidates. Maximal degree in co-relation 100980. Up to 6341 conditions per place. [2023-11-06 22:37:43,031 INFO L140 encePairwiseOnDemand]: 175/197 looper letters, 956 selfloop transitions, 283 changer transitions 4/1308 dead transitions. [2023-11-06 22:37:43,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 1308 transitions, 18576 flow [2023-11-06 22:37:43,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:37:43,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-06 22:37:43,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1696 transitions. [2023-11-06 22:37:43,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5064198268139743 [2023-11-06 22:37:43,036 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1696 transitions. [2023-11-06 22:37:43,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1696 transitions. [2023-11-06 22:37:43,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:37:43,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1696 transitions. [2023-11-06 22:37:43,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 99.76470588235294) internal successors, (1696), 17 states have internal predecessors, (1696), 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 22:37:43,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 197.0) internal successors, (3546), 18 states have internal predecessors, (3546), 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 22:37:43,049 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 197.0) internal successors, (3546), 18 states have internal predecessors, (3546), 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 22:37:43,050 INFO L175 Difference]: Start difference. First operand has 218 places, 655 transitions, 8873 flow. Second operand 17 states and 1696 transitions. [2023-11-06 22:37:43,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 1308 transitions, 18576 flow [2023-11-06 22:37:44,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 1308 transitions, 18291 flow, removed 134 selfloop flow, removed 3 redundant places. [2023-11-06 22:37:44,131 INFO L231 Difference]: Finished difference. Result has 241 places, 783 transitions, 11964 flow [2023-11-06 22:37:44,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=8631, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=11964, PETRI_PLACES=241, PETRI_TRANSITIONS=783} [2023-11-06 22:37:44,132 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 185 predicate places. [2023-11-06 22:37:44,133 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 783 transitions, 11964 flow [2023-11-06 22:37:44,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 87.83870967741936) internal successors, (2723), 31 states have internal predecessors, (2723), 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 22:37:44,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:37:44,134 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:37:44,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:37:44,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:37:44,340 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:37:44,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:37:44,341 INFO L85 PathProgramCache]: Analyzing trace with hash 154483905, now seen corresponding path program 2 times [2023-11-06 22:37:44,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:37:44,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683161209] [2023-11-06 22:37:44,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:44,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:37:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:45,987 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:37:45,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:37:45,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683161209] [2023-11-06 22:37:45,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683161209] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:37:45,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145960067] [2023-11-06 22:37:45,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:37:45,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:37:45,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:37:45,989 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:37:45,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ecd488a-1b4c-4df6-9b57-6469ec9afdcb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:37:46,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:37:46,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:37:46,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-06 22:37:46,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:37:46,492 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:37:46,552 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-06 22:37:46,619 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-11-06 22:37:46,707 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-11-06 22:37:47,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,029 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-11-06 22:37:47,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,139 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 51 [2023-11-06 22:37:47,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,207 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 60 [2023-11-06 22:37:47,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,342 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 72 [2023-11-06 22:37:47,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:47,551 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 72 [2023-11-06 22:37:57,679 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:37:57,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:38:01,893 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:38:01,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145960067] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:38:01,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:38:01,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 14] total 37 [2023-11-06 22:38:01,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184803118] [2023-11-06 22:38:01,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:38:01,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-06 22:38:01,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:01,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-06 22:38:01,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1158, Unknown=5, NotChecked=0, Total=1406 [2023-11-06 22:38:10,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:38:13,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:38:16,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:38:20,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:38:23,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:38:28,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:38:30,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:38:34,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:38:36,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:38:39,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:38:42,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:38:45,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:38:49,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:38:51,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:38:53,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:38:56,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:39:03,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:39:06,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:39:06,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 197 [2023-11-06 22:39:06,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 783 transitions, 11964 flow. Second operand has 38 states, 38 states have (on average 50.71052631578947) internal successors, (1927), 38 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:39:06,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:06,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 197 [2023-11-06 22:39:06,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:15,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:39:18,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:39:20,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:39:22,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:39:27,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:39:32,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:39:34,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:39:44,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:39:48,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:39:50,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:40:00,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]