./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff 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_3a6b6a2c-8d2b-41fb-8416-286cb4837d47/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6b6a2c-8d2b-41fb-8416-286cb4837d47/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6b6a2c-8d2b-41fb-8416-286cb4837d47/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6b6a2c-8d2b-41fb-8416-286cb4837d47/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6b6a2c-8d2b-41fb-8416-286cb4837d47/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6b6a2c-8d2b-41fb-8416-286cb4837d47/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 963fe2b49296fadf7c892a862a5472be95dcc4e457bf5d1be114d7bd124d5424 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:06:17,291 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:06:17,441 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6b6a2c-8d2b-41fb-8416-286cb4837d47/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 08:06:17,449 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:06:17,450 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:06:17,497 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:06:17,498 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:06:17,498 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:06:17,499 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:06:17,504 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:06:17,506 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:06:17,506 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:06:17,507 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:06:17,509 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:06:17,510 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:06:17,510 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:06:17,511 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:06:17,511 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:06:17,511 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:06:17,512 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:06:17,512 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:06:17,513 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:06:17,513 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 08:06:17,515 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:06:17,515 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:06:17,516 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:06:17,516 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:06:17,517 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:06:17,518 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:06:17,518 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:06:17,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:17,520 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:06:17,520 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:06:17,520 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:06:17,520 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:06:17,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:06:17,521 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:06:17,521 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:06:17,521 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:06:17,522 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:06:17,522 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:06:17,522 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_3a6b6a2c-8d2b-41fb-8416-286cb4837d47/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6b6a2c-8d2b-41fb-8416-286cb4837d47/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 963fe2b49296fadf7c892a862a5472be95dcc4e457bf5d1be114d7bd124d5424 [2023-11-19 08:06:17,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:06:17,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:06:17,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:06:17,910 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:06:17,910 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:06:17,912 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6b6a2c-8d2b-41fb-8416-286cb4837d47/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i [2023-11-19 08:06:21,289 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:06:21,629 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:06:21,629 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6b6a2c-8d2b-41fb-8416-286cb4837d47/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i [2023-11-19 08:06:21,650 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6b6a2c-8d2b-41fb-8416-286cb4837d47/bin/uautomizer-verify-uCwYo4JHxu/data/99c2ffd90/99726a9aa11d4c4c851649ec91f5b72c/FLAGba918c058 [2023-11-19 08:06:21,670 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6b6a2c-8d2b-41fb-8416-286cb4837d47/bin/uautomizer-verify-uCwYo4JHxu/data/99c2ffd90/99726a9aa11d4c4c851649ec91f5b72c [2023-11-19 08:06:21,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:06:21,676 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:06:21,678 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:21,678 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:06:21,686 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:06:21,686 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:21" (1/1) ... [2023-11-19 08:06:21,688 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cab68f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:21, skipping insertion in model container [2023-11-19 08:06:21,688 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:21" (1/1) ... [2023-11-19 08:06:21,762 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:06:22,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:22,435 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:06:22,525 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:22,598 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:06:22,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:22 WrapperNode [2023-11-19 08:06:22,599 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:22,601 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:22,601 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:06:22,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:06:22,613 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:22" (1/1) ... [2023-11-19 08:06:22,657 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:22" (1/1) ... [2023-11-19 08:06:22,702 INFO L138 Inliner]: procedures = 172, calls = 17, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 94 [2023-11-19 08:06:22,703 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:22,704 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:06:22,705 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:06:22,705 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:06:22,716 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:22" (1/1) ... [2023-11-19 08:06:22,717 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:22" (1/1) ... [2023-11-19 08:06:22,727 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:22" (1/1) ... [2023-11-19 08:06:22,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:22" (1/1) ... [2023-11-19 08:06:22,746 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:22" (1/1) ... [2023-11-19 08:06:22,755 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:22" (1/1) ... [2023-11-19 08:06:22,765 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:22" (1/1) ... [2023-11-19 08:06:22,766 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:22" (1/1) ... [2023-11-19 08:06:22,770 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:06:22,774 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:06:22,775 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:06:22,775 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:06:22,776 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:22" (1/1) ... [2023-11-19 08:06:22,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:22,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6b6a2c-8d2b-41fb-8416-286cb4837d47/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:22,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6b6a2c-8d2b-41fb-8416-286cb4837d47/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:06:22,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6b6a2c-8d2b-41fb-8416-286cb4837d47/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:06:22,868 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 08:06:22,869 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 08:06:22,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:06:22,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:06:22,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:06:22,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:06:22,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:06:22,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:06:22,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:06:22,873 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:06:23,141 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:06:23,144 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:06:23,446 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:06:23,522 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:06:23,523 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 08:06:23,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:23 BoogieIcfgContainer [2023-11-19 08:06:23,528 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:06:23,531 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:06:23,531 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:06:23,536 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:06:23,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:06:21" (1/3) ... [2023-11-19 08:06:23,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9333323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:23, skipping insertion in model container [2023-11-19 08:06:23,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:22" (2/3) ... [2023-11-19 08:06:23,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9333323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:23, skipping insertion in model container [2023-11-19 08:06:23,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:23" (3/3) ... [2023-11-19 08:06:23,541 INFO L112 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs-b.i [2023-11-19 08:06:23,553 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:06:23,568 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:06:23,569 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-11-19 08:06:23,569 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:06:23,645 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:06:23,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 87 transitions, 178 flow [2023-11-19 08:06:23,751 INFO L124 PetriNetUnfolderBase]: 6/98 cut-off events. [2023-11-19 08:06:23,752 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:23,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 98 events. 6/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2023-11-19 08:06:23,759 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 87 transitions, 178 flow [2023-11-19 08:06:23,765 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 87 transitions, 178 flow [2023-11-19 08:06:23,770 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:06:23,784 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 87 transitions, 178 flow [2023-11-19 08:06:23,788 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 87 transitions, 178 flow [2023-11-19 08:06:23,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 87 transitions, 178 flow [2023-11-19 08:06:23,818 INFO L124 PetriNetUnfolderBase]: 6/98 cut-off events. [2023-11-19 08:06:23,819 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:23,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 98 events. 6/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2023-11-19 08:06:23,824 INFO L119 LiptonReduction]: Number of co-enabled transitions 1708 [2023-11-19 08:06:26,783 INFO L134 LiptonReduction]: Checked pairs total: 1520 [2023-11-19 08:06:26,784 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-11-19 08:06:26,808 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:06:26,822 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@58c5ee64, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:06:26,823 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-19 08:06:26,835 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:06:26,835 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-19 08:06:26,835 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:26,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:26,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 08:06:26,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-11-19 08:06:26,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:26,846 INFO L85 PathProgramCache]: Analyzing trace with hash 13905258, now seen corresponding path program 1 times [2023-11-19 08:06:26,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:26,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365239740] [2023-11-19 08:06:26,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:26,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:27,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:27,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:27,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365239740] [2023-11-19 08:06:27,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365239740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:27,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:27,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:06:27,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031202561] [2023-11-19 08:06:27,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:27,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:06:27,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:27,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:06:27,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:06:27,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 183 [2023-11-19 08:06:27,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 16 transitions, 36 flow. Second operand has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 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) [2023-11-19 08:06:27,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:27,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 183 [2023-11-19 08:06:27,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:27,244 INFO L124 PetriNetUnfolderBase]: 7/19 cut-off events. [2023-11-19 08:06:27,244 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:27,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 19 events. 7/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 4 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 30. Up to 19 conditions per place. [2023-11-19 08:06:27,246 INFO L140 encePairwiseOnDemand]: 175/183 looper letters, 7 selfloop transitions, 0 changer transitions 0/8 dead transitions. [2023-11-19 08:06:27,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 8 transitions, 34 flow [2023-11-19 08:06:27,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:06:27,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:06:27,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 163 transitions. [2023-11-19 08:06:27,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453551912568306 [2023-11-19 08:06:27,274 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 163 transitions. [2023-11-19 08:06:27,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 163 transitions. [2023-11-19 08:06:27,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:27,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 163 transitions. [2023-11-19 08:06:27,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 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) [2023-11-19 08:06:27,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 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) [2023-11-19 08:06:27,299 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 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) [2023-11-19 08:06:27,302 INFO L175 Difference]: Start difference. First operand has 18 places, 16 transitions, 36 flow. Second operand 2 states and 163 transitions. [2023-11-19 08:06:27,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 8 transitions, 34 flow [2023-11-19 08:06:27,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 8 transitions, 34 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:06:27,310 INFO L231 Difference]: Finished difference. Result has 11 places, 8 transitions, 20 flow [2023-11-19 08:06:27,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=20, PETRI_PLACES=11, PETRI_TRANSITIONS=8} [2023-11-19 08:06:27,320 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -7 predicate places. [2023-11-19 08:06:27,320 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 8 transitions, 20 flow [2023-11-19 08:06:27,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 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) [2023-11-19 08:06:27,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:27,322 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 08:06:27,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:06:27,323 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-11-19 08:06:27,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:27,324 INFO L85 PathProgramCache]: Analyzing trace with hash 478007560, now seen corresponding path program 1 times [2023-11-19 08:06:27,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:27,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881656955] [2023-11-19 08:06:27,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:27,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:27,358 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:06:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:27,422 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:06:27,423 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:06:27,425 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-11-19 08:06:27,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2023-11-19 08:06:27,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2023-11-19 08:06:27,430 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2023-11-19 08:06:27,430 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2023-11-19 08:06:27,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2023-11-19 08:06:27,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2023-11-19 08:06:27,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2023-11-19 08:06:27,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2023-11-19 08:06:27,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2023-11-19 08:06:27,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2023-11-19 08:06:27,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2023-11-19 08:06:27,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2023-11-19 08:06:27,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2023-11-19 08:06:27,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2023-11-19 08:06:27,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:06:27,437 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 08:06:27,441 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:06:27,441 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 08:06:27,494 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:06:27,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 149 transitions, 308 flow [2023-11-19 08:06:27,582 INFO L124 PetriNetUnfolderBase]: 11/173 cut-off events. [2023-11-19 08:06:27,584 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:06:27,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 173 events. 11/173 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 358 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 135. Up to 6 conditions per place. [2023-11-19 08:06:27,595 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 149 transitions, 308 flow [2023-11-19 08:06:27,599 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 149 transitions, 308 flow [2023-11-19 08:06:27,600 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:06:27,600 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 149 transitions, 308 flow [2023-11-19 08:06:27,601 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 149 transitions, 308 flow [2023-11-19 08:06:27,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 149 transitions, 308 flow [2023-11-19 08:06:27,690 INFO L124 PetriNetUnfolderBase]: 11/173 cut-off events. [2023-11-19 08:06:27,691 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:06:27,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 173 events. 11/173 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 358 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 135. Up to 6 conditions per place. [2023-11-19 08:06:27,709 INFO L119 LiptonReduction]: Number of co-enabled transitions 10980 [2023-11-19 08:06:30,594 INFO L134 LiptonReduction]: Checked pairs total: 21233 [2023-11-19 08:06:30,595 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-11-19 08:06:30,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:06:30,600 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@58c5ee64, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:06:30,600 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-19 08:06:30,603 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:06:30,603 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-19 08:06:30,604 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:30,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:30,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:06:30,605 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-11-19 08:06:30,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:30,605 INFO L85 PathProgramCache]: Analyzing trace with hash 764014320, now seen corresponding path program 1 times [2023-11-19 08:06:30,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:30,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679992394] [2023-11-19 08:06:30,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:30,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:30,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:30,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679992394] [2023-11-19 08:06:30,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679992394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:30,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:30,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:30,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744044333] [2023-11-19 08:06:30,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:30,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:30,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:30,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:30,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:30,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 278 [2023-11-19 08:06:30,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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) [2023-11-19 08:06:30,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:30,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 278 [2023-11-19 08:06:30,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:31,030 INFO L124 PetriNetUnfolderBase]: 609/1089 cut-off events. [2023-11-19 08:06:31,030 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-19 08:06:31,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2174 conditions, 1089 events. 609/1089 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5974 event pairs, 227 based on Foata normal form. 0/998 useless extension candidates. Maximal degree in co-relation 1708. Up to 694 conditions per place. [2023-11-19 08:06:31,043 INFO L140 encePairwiseOnDemand]: 253/278 looper letters, 48 selfloop transitions, 10 changer transitions 0/63 dead transitions. [2023-11-19 08:06:31,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 63 transitions, 257 flow [2023-11-19 08:06:31,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:31,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:31,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 417 transitions. [2023-11-19 08:06:31,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-19 08:06:31,050 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 417 transitions. [2023-11-19 08:06:31,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 417 transitions. [2023-11-19 08:06:31,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:31,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 417 transitions. [2023-11-19 08:06:31,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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) [2023-11-19 08:06:31,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 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) [2023-11-19 08:06:31,060 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 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) [2023-11-19 08:06:31,060 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 106 flow. Second operand 3 states and 417 transitions. [2023-11-19 08:06:31,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 63 transitions, 257 flow [2023-11-19 08:06:31,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 63 transitions, 257 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:06:31,064 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 172 flow [2023-11-19 08:06:31,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2023-11-19 08:06:31,066 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -5 predicate places. [2023-11-19 08:06:31,067 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 172 flow [2023-11-19 08:06:31,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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) [2023-11-19 08:06:31,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:31,068 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 08:06:31,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:06:31,069 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-11-19 08:06:31,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:31,070 INFO L85 PathProgramCache]: Analyzing trace with hash 129195727, now seen corresponding path program 1 times [2023-11-19 08:06:31,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:31,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078831819] [2023-11-19 08:06:31,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:31,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:31,095 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:06:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:31,120 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:06:31,121 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:06:31,121 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-19 08:06:31,122 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-19 08:06:31,122 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-19 08:06:31,122 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-19 08:06:31,123 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-19 08:06:31,123 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-19 08:06:31,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-19 08:06:31,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-19 08:06:31,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-19 08:06:31,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-19 08:06:31,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-19 08:06:31,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-19 08:06:31,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-19 08:06:31,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-19 08:06:31,127 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-19 08:06:31,127 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-19 08:06:31,127 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-19 08:06:31,128 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-19 08:06:31,128 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-19 08:06:31,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-19 08:06:31,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-19 08:06:31,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-19 08:06:31,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:06:31,130 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 08:06:31,131 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:06:31,132 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 08:06:31,181 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:06:31,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 211 transitions, 440 flow [2023-11-19 08:06:31,246 INFO L124 PetriNetUnfolderBase]: 16/248 cut-off events. [2023-11-19 08:06:31,247 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 08:06:31,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 248 events. 16/248 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 721 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 196. Up to 8 conditions per place. [2023-11-19 08:06:31,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 211 transitions, 440 flow [2023-11-19 08:06:31,257 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 211 transitions, 440 flow [2023-11-19 08:06:31,258 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:06:31,258 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 211 transitions, 440 flow [2023-11-19 08:06:31,259 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 211 transitions, 440 flow [2023-11-19 08:06:31,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 211 transitions, 440 flow [2023-11-19 08:06:31,317 INFO L124 PetriNetUnfolderBase]: 16/248 cut-off events. [2023-11-19 08:06:31,318 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 08:06:31,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 248 events. 16/248 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 721 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 196. Up to 8 conditions per place. [2023-11-19 08:06:31,348 INFO L119 LiptonReduction]: Number of co-enabled transitions 27816 [2023-11-19 08:06:35,128 INFO L134 LiptonReduction]: Checked pairs total: 58531 [2023-11-19 08:06:35,128 INFO L136 LiptonReduction]: Total number of compositions: 189 [2023-11-19 08:06:35,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:06:35,133 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@58c5ee64, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:06:35,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-11-19 08:06:35,136 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:06:35,136 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-19 08:06:35,137 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:35,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:35,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:06:35,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-11-19 08:06:35,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:35,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1197634538, now seen corresponding path program 1 times [2023-11-19 08:06:35,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:35,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793180267] [2023-11-19 08:06:35,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:35,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:35,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:35,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:35,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793180267] [2023-11-19 08:06:35,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793180267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:35,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:35,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:35,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852707526] [2023-11-19 08:06:35,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:35,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:35,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:35,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:35,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:35,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 400 [2023-11-19 08:06:35,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 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) [2023-11-19 08:06:35,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:35,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 400 [2023-11-19 08:06:35,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:38,040 INFO L124 PetriNetUnfolderBase]: 11250/17657 cut-off events. [2023-11-19 08:06:38,040 INFO L125 PetriNetUnfolderBase]: For 1111/1111 co-relation queries the response was YES. [2023-11-19 08:06:38,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34663 conditions, 17657 events. 11250/17657 cut-off events. For 1111/1111 co-relation queries the response was YES. Maximal size of possible extension queue 850. Compared 129744 event pairs, 4734 based on Foata normal form. 0/15256 useless extension candidates. Maximal degree in co-relation 23928. Up to 11092 conditions per place. [2023-11-19 08:06:38,254 INFO L140 encePairwiseOnDemand]: 363/400 looper letters, 65 selfloop transitions, 15 changer transitions 0/89 dead transitions. [2023-11-19 08:06:38,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 89 transitions, 368 flow [2023-11-19 08:06:38,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:38,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:38,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 583 transitions. [2023-11-19 08:06:38,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48583333333333334 [2023-11-19 08:06:38,260 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 583 transitions. [2023-11-19 08:06:38,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 583 transitions. [2023-11-19 08:06:38,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:38,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 583 transitions. [2023-11-19 08:06:38,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 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) [2023-11-19 08:06:38,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 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) [2023-11-19 08:06:38,274 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 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) [2023-11-19 08:06:38,274 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 156 flow. Second operand 3 states and 583 transitions. [2023-11-19 08:06:38,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 89 transitions, 368 flow [2023-11-19 08:06:38,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 89 transitions, 364 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-19 08:06:38,285 INFO L231 Difference]: Finished difference. Result has 61 places, 68 transitions, 254 flow [2023-11-19 08:06:38,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=61, PETRI_TRANSITIONS=68} [2023-11-19 08:06:38,290 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -9 predicate places. [2023-11-19 08:06:38,290 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 68 transitions, 254 flow [2023-11-19 08:06:38,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 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) [2023-11-19 08:06:38,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:38,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:38,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:06:38,296 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-11-19 08:06:38,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:38,297 INFO L85 PathProgramCache]: Analyzing trace with hash -2101456340, now seen corresponding path program 1 times [2023-11-19 08:06:38,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:38,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780946766] [2023-11-19 08:06:38,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:38,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:38,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:38,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:38,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780946766] [2023-11-19 08:06:38,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780946766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:38,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:38,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:38,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454258542] [2023-11-19 08:06:38,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:38,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:38,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:38,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:38,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:38,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 400 [2023-11-19 08:06:38,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 68 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 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) [2023-11-19 08:06:38,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:38,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 400 [2023-11-19 08:06:38,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:41,542 INFO L124 PetriNetUnfolderBase]: 11952/19306 cut-off events. [2023-11-19 08:06:41,542 INFO L125 PetriNetUnfolderBase]: For 5075/5081 co-relation queries the response was YES. [2023-11-19 08:06:41,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44398 conditions, 19306 events. 11952/19306 cut-off events. For 5075/5081 co-relation queries the response was YES. Maximal size of possible extension queue 891. Compared 147288 event pairs, 6722 based on Foata normal form. 0/16780 useless extension candidates. Maximal degree in co-relation 32214. Up to 13625 conditions per place. [2023-11-19 08:06:41,745 INFO L140 encePairwiseOnDemand]: 390/400 looper letters, 56 selfloop transitions, 16 changer transitions 0/97 dead transitions. [2023-11-19 08:06:41,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 97 transitions, 502 flow [2023-11-19 08:06:41,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:41,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:41,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2023-11-19 08:06:41,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4508333333333333 [2023-11-19 08:06:41,749 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2023-11-19 08:06:41,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2023-11-19 08:06:41,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:41,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2023-11-19 08:06:41,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 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) [2023-11-19 08:06:41,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 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) [2023-11-19 08:06:41,759 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 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) [2023-11-19 08:06:41,759 INFO L175 Difference]: Start difference. First operand has 61 places, 68 transitions, 254 flow. Second operand 3 states and 541 transitions. [2023-11-19 08:06:41,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 97 transitions, 502 flow [2023-11-19 08:06:41,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 97 transitions, 460 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:06:41,908 INFO L231 Difference]: Finished difference. Result has 63 places, 82 transitions, 370 flow [2023-11-19 08:06:41,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=370, PETRI_PLACES=63, PETRI_TRANSITIONS=82} [2023-11-19 08:06:41,909 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2023-11-19 08:06:41,910 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 82 transitions, 370 flow [2023-11-19 08:06:41,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 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) [2023-11-19 08:06:41,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:41,911 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-19 08:06:41,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:06:41,912 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-11-19 08:06:41,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:41,912 INFO L85 PathProgramCache]: Analyzing trace with hash -2137883466, now seen corresponding path program 1 times [2023-11-19 08:06:41,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:41,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597844566] [2023-11-19 08:06:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:41,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:41,947 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:06:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:41,970 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:06:41,971 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:06:41,971 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2023-11-19 08:06:41,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2023-11-19 08:06:41,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2023-11-19 08:06:41,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2023-11-19 08:06:41,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2023-11-19 08:06:41,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2023-11-19 08:06:41,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2023-11-19 08:06:41,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2023-11-19 08:06:41,974 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2023-11-19 08:06:41,974 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2023-11-19 08:06:41,974 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2023-11-19 08:06:41,975 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2023-11-19 08:06:41,975 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2023-11-19 08:06:41,975 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2023-11-19 08:06:41,976 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2023-11-19 08:06:41,976 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2023-11-19 08:06:41,976 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2023-11-19 08:06:41,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2023-11-19 08:06:41,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2023-11-19 08:06:41,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2023-11-19 08:06:41,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2023-11-19 08:06:41,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2023-11-19 08:06:41,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2023-11-19 08:06:41,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2023-11-19 08:06:41,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2023-11-19 08:06:41,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2023-11-19 08:06:41,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2023-11-19 08:06:41,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2023-11-19 08:06:41,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2023-11-19 08:06:41,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:06:41,980 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 08:06:41,981 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:06:41,982 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-19 08:06:42,042 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:06:42,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 273 transitions, 574 flow [2023-11-19 08:06:42,144 INFO L124 PetriNetUnfolderBase]: 21/323 cut-off events. [2023-11-19 08:06:42,144 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-19 08:06:42,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 323 events. 21/323 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1101 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 257. Up to 10 conditions per place. [2023-11-19 08:06:42,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 273 transitions, 574 flow [2023-11-19 08:06:42,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 273 transitions, 574 flow [2023-11-19 08:06:42,157 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:06:42,157 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 265 places, 273 transitions, 574 flow [2023-11-19 08:06:42,158 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 265 places, 273 transitions, 574 flow [2023-11-19 08:06:42,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 273 transitions, 574 flow [2023-11-19 08:06:42,311 INFO L124 PetriNetUnfolderBase]: 21/323 cut-off events. [2023-11-19 08:06:42,311 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-19 08:06:42,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 323 events. 21/323 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1101 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 257. Up to 10 conditions per place. [2023-11-19 08:06:42,341 INFO L119 LiptonReduction]: Number of co-enabled transitions 52216 [2023-11-19 08:06:46,308 INFO L134 LiptonReduction]: Checked pairs total: 97442 [2023-11-19 08:06:46,308 INFO L136 LiptonReduction]: Total number of compositions: 237 [2023-11-19 08:06:46,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:06:46,311 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@58c5ee64, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:06:46,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-11-19 08:06:46,314 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:06:46,315 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-19 08:06:46,315 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:46,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:46,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:06:46,315 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-19 08:06:46,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:46,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1742734845, now seen corresponding path program 1 times [2023-11-19 08:06:46,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:46,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720375246] [2023-11-19 08:06:46,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:46,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:46,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:46,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:46,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720375246] [2023-11-19 08:06:46,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720375246] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:46,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:46,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:46,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306670265] [2023-11-19 08:06:46,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:46,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:46,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:46,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:46,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:46,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 510 [2023-11-19 08:06:46,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 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) [2023-11-19 08:06:46,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:46,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 510 [2023-11-19 08:06:46,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand