./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.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_1a69769b-7398-470a-b645-aab8432364e9/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a69769b-7398-470a-b645-aab8432364e9/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_1a69769b-7398-470a-b645-aab8432364e9/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a69769b-7398-470a-b645-aab8432364e9/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a69769b-7398-470a-b645-aab8432364e9/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_1a69769b-7398-470a-b645-aab8432364e9/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 cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:21:07,462 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:21:07,542 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a69769b-7398-470a-b645-aab8432364e9/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:21:07,549 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:21:07,550 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:21:07,579 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:21:07,580 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:21:07,581 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:21:07,582 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:21:07,583 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:21:07,588 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:21:07,589 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:21:07,589 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:21:07,590 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:21:07,593 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:21:07,594 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:21:07,595 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:21:07,598 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:21:07,599 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:21:07,600 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:21:07,600 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:21:07,605 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:21:07,606 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:21:07,607 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:21:07,607 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:21:07,608 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:21:07,608 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:21:07,609 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:21:07,610 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:21:07,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:21:07,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:21:07,612 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:21:07,613 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:21:07,614 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:21:07,614 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:21:07,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:21:07,615 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:21:07,620 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:21:07,620 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:21:07,620 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:21:07,621 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:21:07,621 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_1a69769b-7398-470a-b645-aab8432364e9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a69769b-7398-470a-b645-aab8432364e9/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c [2023-11-06 22:21:07,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:21:08,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:21:08,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:21:08,009 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:21:08,010 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:21:08,011 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a69769b-7398-470a-b645-aab8432364e9/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i [2023-11-06 22:21:11,328 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:21:11,677 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:21:11,678 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a69769b-7398-470a-b645-aab8432364e9/sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i [2023-11-06 22:21:11,695 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a69769b-7398-470a-b645-aab8432364e9/bin/uautomizer-verify-WvqO1wxjHP/data/b608b61f1/641fe73d795b49e0b14b7ef3639347c7/FLAG90ddabc6e [2023-11-06 22:21:11,711 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a69769b-7398-470a-b645-aab8432364e9/bin/uautomizer-verify-WvqO1wxjHP/data/b608b61f1/641fe73d795b49e0b14b7ef3639347c7 [2023-11-06 22:21:11,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:21:11,715 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:21:11,717 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:21:11,717 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:21:11,723 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:21:11,724 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:21:11" (1/1) ... [2023-11-06 22:21:11,725 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@675dd04c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:11, skipping insertion in model container [2023-11-06 22:21:11,726 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:21:11" (1/1) ... [2023-11-06 22:21:11,794 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:21:12,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:21:12,258 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:21:12,300 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:21:12,343 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:21:12,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:12 WrapperNode [2023-11-06 22:21:12,344 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:21:12,345 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:21:12,346 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:21:12,346 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:21:12,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:12" (1/1) ... [2023-11-06 22:21:12,370 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:12" (1/1) ... [2023-11-06 22:21:12,394 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2023-11-06 22:21:12,395 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:21:12,395 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:21:12,396 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:21:12,396 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:21:12,405 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:12" (1/1) ... [2023-11-06 22:21:12,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:12" (1/1) ... [2023-11-06 22:21:12,410 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:12" (1/1) ... [2023-11-06 22:21:12,413 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:12" (1/1) ... [2023-11-06 22:21:12,438 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:12" (1/1) ... [2023-11-06 22:21:12,444 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:12" (1/1) ... [2023-11-06 22:21:12,455 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:12" (1/1) ... [2023-11-06 22:21:12,456 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:12" (1/1) ... [2023-11-06 22:21:12,460 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:21:12,461 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:21:12,461 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:21:12,461 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:21:12,462 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:12" (1/1) ... [2023-11-06 22:21:12,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:21:12,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a69769b-7398-470a-b645-aab8432364e9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:21:12,505 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a69769b-7398-470a-b645-aab8432364e9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:21:12,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a69769b-7398-470a-b645-aab8432364e9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:21:12,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:21:12,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:21:12,553 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:21:12,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:21:12,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:21:12,554 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 22:21:12,554 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 22:21:12,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:21:12,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:21:12,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:21:12,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:21:12,557 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 22:21:12,756 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:21:12,758 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:21:13,098 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:21:13,107 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:21:13,108 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-06 22:21:13,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:21:13 BoogieIcfgContainer [2023-11-06 22:21:13,110 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:21:13,141 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:21:13,141 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:21:13,144 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:21:13,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:21:11" (1/3) ... [2023-11-06 22:21:13,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484f0201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:21:13, skipping insertion in model container [2023-11-06 22:21:13,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:12" (2/3) ... [2023-11-06 22:21:13,146 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484f0201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:21:13, skipping insertion in model container [2023-11-06 22:21:13,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:21:13" (3/3) ... [2023-11-06 22:21:13,147 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_21-deref_read_racing.i [2023-11-06 22:21:13,169 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:21:13,180 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:21:13,182 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-06 22:21:13,182 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:21:13,329 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:21:13,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 155 transitions, 314 flow [2023-11-06 22:21:13,534 INFO L124 PetriNetUnfolderBase]: 16/208 cut-off events. [2023-11-06 22:21:13,535 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:21:13,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 208 events. 16/208 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 598 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 124. Up to 4 conditions per place. [2023-11-06 22:21:13,544 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 155 transitions, 314 flow [2023-11-06 22:21:13,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 155 transitions, 314 flow [2023-11-06 22:21:13,562 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:21:13,575 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 155 transitions, 314 flow [2023-11-06 22:21:13,578 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 155 transitions, 314 flow [2023-11-06 22:21:13,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 155 transitions, 314 flow [2023-11-06 22:21:13,648 INFO L124 PetriNetUnfolderBase]: 16/208 cut-off events. [2023-11-06 22:21:13,649 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:21:13,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 208 events. 16/208 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 598 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 124. Up to 4 conditions per place. [2023-11-06 22:21:13,662 INFO L119 LiptonReduction]: Number of co-enabled transitions 7788 [2023-11-06 22:21:17,660 INFO L134 LiptonReduction]: Checked pairs total: 27721 [2023-11-06 22:21:17,661 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-11-06 22:21:17,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:21:17,685 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;@2d957d9a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:21:17,685 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-06 22:21:17,689 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:21:17,689 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-06 22:21:17,690 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:21:17,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:17,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:21:17,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-06 22:21:17,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:17,697 INFO L85 PathProgramCache]: Analyzing trace with hash 17976, now seen corresponding path program 1 times [2023-11-06 22:21:17,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:17,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116511133] [2023-11-06 22:21:17,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:17,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:17,938 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 22:21:17,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:17,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116511133] [2023-11-06 22:21:17,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116511133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:17,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:17,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:21:17,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242506914] [2023-11-06 22:21:17,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:17,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:21:17,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:17,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:21:17,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:21:17,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 263 [2023-11-06 22:21:17,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 69 transitions, 142 flow. Second operand has 2 states, 2 states have (on average 143.0) internal successors, (286), 2 states have internal predecessors, (286), 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 22:21:17,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:17,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 263 [2023-11-06 22:21:18,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:18,157 INFO L124 PetriNetUnfolderBase]: 96/428 cut-off events. [2023-11-06 22:21:18,157 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:21:18,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 428 events. 96/428 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2015 event pairs, 96 based on Foata normal form. 22/417 useless extension candidates. Maximal degree in co-relation 621. Up to 222 conditions per place. [2023-11-06 22:21:18,164 INFO L140 encePairwiseOnDemand]: 252/263 looper letters, 22 selfloop transitions, 0 changer transitions 0/58 dead transitions. [2023-11-06 22:21:18,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 164 flow [2023-11-06 22:21:18,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:21:18,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:21:18,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 317 transitions. [2023-11-06 22:21:18,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6026615969581749 [2023-11-06 22:21:18,190 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 317 transitions. [2023-11-06 22:21:18,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 317 transitions. [2023-11-06 22:21:18,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:18,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 317 transitions. [2023-11-06 22:21:18,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 158.5) internal successors, (317), 2 states have internal predecessors, (317), 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 22:21:18,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 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 22:21:18,211 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 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 22:21:18,213 INFO L175 Difference]: Start difference. First operand has 63 places, 69 transitions, 142 flow. Second operand 2 states and 317 transitions. [2023-11-06 22:21:18,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 164 flow [2023-11-06 22:21:18,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 164 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:21:18,220 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 120 flow [2023-11-06 22:21:18,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=120, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2023-11-06 22:21:18,226 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2023-11-06 22:21:18,227 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 120 flow [2023-11-06 22:21:18,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 143.0) internal successors, (286), 2 states have internal predecessors, (286), 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 22:21:18,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:18,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:21:18,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:21:18,229 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-06 22:21:18,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:18,239 INFO L85 PathProgramCache]: Analyzing trace with hash 557026, now seen corresponding path program 1 times [2023-11-06 22:21:18,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:18,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936262533] [2023-11-06 22:21:18,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:18,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:18,359 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 22:21:18,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:18,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936262533] [2023-11-06 22:21:18,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936262533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:18,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:18,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:21:18,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526754509] [2023-11-06 22:21:18,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:18,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:21:18,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:18,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:21:18,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:21:18,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 263 [2023-11-06 22:21:18,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 22:21:18,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:18,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 263 [2023-11-06 22:21:18,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:18,538 INFO L124 PetriNetUnfolderBase]: 96/442 cut-off events. [2023-11-06 22:21:18,539 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:21:18,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 442 events. 96/442 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2078 event pairs, 77 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 659. Up to 201 conditions per place. [2023-11-06 22:21:18,545 INFO L140 encePairwiseOnDemand]: 260/263 looper letters, 33 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-11-06 22:21:18,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 71 transitions, 216 flow [2023-11-06 22:21:18,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:21:18,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:21:18,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-11-06 22:21:18,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5627376425855514 [2023-11-06 22:21:18,551 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-11-06 22:21:18,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-11-06 22:21:18,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:18,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-11-06 22:21:18,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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 22:21:18,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 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 22:21:18,559 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 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 22:21:18,559 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 120 flow. Second operand 3 states and 444 transitions. [2023-11-06 22:21:18,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 71 transitions, 216 flow [2023-11-06 22:21:18,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 71 transitions, 216 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:21:18,563 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 128 flow [2023-11-06 22:21:18,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2023-11-06 22:21:18,565 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 2 predicate places. [2023-11-06 22:21:18,565 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 128 flow [2023-11-06 22:21:18,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 22:21:18,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:18,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:21:18,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:21:18,567 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-06 22:21:18,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:18,578 INFO L85 PathProgramCache]: Analyzing trace with hash -580293586, now seen corresponding path program 1 times [2023-11-06 22:21:18,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:18,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286914708] [2023-11-06 22:21:18,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:18,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:18,699 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 22:21:18,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:18,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286914708] [2023-11-06 22:21:18,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286914708] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:18,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:18,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:21:18,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2208753] [2023-11-06 22:21:18,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:18,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:21:18,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:18,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:21:18,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:21:18,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 263 [2023-11-06 22:21:18,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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 22:21:18,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:18,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 263 [2023-11-06 22:21:18,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:18,862 INFO L124 PetriNetUnfolderBase]: 128/493 cut-off events. [2023-11-06 22:21:18,863 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-06 22:21:18,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 493 events. 128/493 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2261 event pairs, 74 based on Foata normal form. 0/481 useless extension candidates. Maximal degree in co-relation 830. Up to 268 conditions per place. [2023-11-06 22:21:18,867 INFO L140 encePairwiseOnDemand]: 258/263 looper letters, 30 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-11-06 22:21:18,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 61 transitions, 203 flow [2023-11-06 22:21:18,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:21:18,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:21:18,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2023-11-06 22:21:18,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.550063371356147 [2023-11-06 22:21:18,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2023-11-06 22:21:18,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2023-11-06 22:21:18,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:18,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2023-11-06 22:21:18,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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 22:21:18,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 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 22:21:18,877 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 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 22:21:18,877 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 128 flow. Second operand 3 states and 434 transitions. [2023-11-06 22:21:18,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 61 transitions, 203 flow [2023-11-06 22:21:18,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 197 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:21:18,881 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 134 flow [2023-11-06 22:21:18,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-11-06 22:21:18,883 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2023-11-06 22:21:18,887 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 134 flow [2023-11-06 22:21:18,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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 22:21:18,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:18,888 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:21:18,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:21:18,890 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-06 22:21:18,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:18,891 INFO L85 PathProgramCache]: Analyzing trace with hash -580293429, now seen corresponding path program 1 times [2023-11-06 22:21:18,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:18,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367418956] [2023-11-06 22:21:18,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:18,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:21:18,947 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:21:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:21:19,007 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:21:19,014 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:21:19,016 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-06 22:21:19,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-06 22:21:19,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-06 22:21:19,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-06 22:21:19,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-06 22:21:19,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-06 22:21:19,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-06 22:21:19,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-06 22:21:19,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-06 22:21:19,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-06 22:21:19,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-06 22:21:19,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-06 22:21:19,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-06 22:21:19,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-06 22:21:19,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-06 22:21:19,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-06 22:21:19,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-06 22:21:19,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:21:19,026 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-06 22:21:19,030 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:21:19,030 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:21:19,081 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:21:19,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 222 transitions, 454 flow [2023-11-06 22:21:19,153 INFO L124 PetriNetUnfolderBase]: 27/333 cut-off events. [2023-11-06 22:21:19,153 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:21:19,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 333 events. 27/333 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1278 event pairs, 0 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 209. Up to 6 conditions per place. [2023-11-06 22:21:19,157 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 222 transitions, 454 flow [2023-11-06 22:21:19,161 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 222 transitions, 454 flow [2023-11-06 22:21:19,162 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:21:19,162 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 222 transitions, 454 flow [2023-11-06 22:21:19,162 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 222 transitions, 454 flow [2023-11-06 22:21:19,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 222 transitions, 454 flow [2023-11-06 22:21:19,225 INFO L124 PetriNetUnfolderBase]: 27/333 cut-off events. [2023-11-06 22:21:19,225 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:21:19,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 333 events. 27/333 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1278 event pairs, 0 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 209. Up to 6 conditions per place. [2023-11-06 22:21:19,247 INFO L119 LiptonReduction]: Number of co-enabled transitions 24420 [2023-11-06 22:21:23,110 INFO L134 LiptonReduction]: Checked pairs total: 109920 [2023-11-06 22:21:23,111 INFO L136 LiptonReduction]: Total number of compositions: 134 [2023-11-06 22:21:23,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:21:23,124 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;@2d957d9a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:21:23,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-06 22:21:23,126 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:21:23,127 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-06 22:21:23,127 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:21:23,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:23,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:21:23,127 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-06 22:21:23,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:23,128 INFO L85 PathProgramCache]: Analyzing trace with hash 31509, now seen corresponding path program 1 times [2023-11-06 22:21:23,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:23,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703091688] [2023-11-06 22:21:23,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:23,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:23,164 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 22:21:23,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:23,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703091688] [2023-11-06 22:21:23,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703091688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:23,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:23,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:21:23,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815376980] [2023-11-06 22:21:23,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:23,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:21:23,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:23,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:21:23,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:21:23,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 356 [2023-11-06 22:21:23,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 117 transitions, 244 flow. Second operand has 2 states, 2 states have (on average 203.0) internal successors, (406), 2 states have internal predecessors, (406), 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 22:21:23,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:23,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 356 [2023-11-06 22:21:23,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:24,448 INFO L124 PetriNetUnfolderBase]: 2748/7493 cut-off events. [2023-11-06 22:21:24,448 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-11-06 22:21:24,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11932 conditions, 7493 events. 2748/7493 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 66798 event pairs, 2748 based on Foata normal form. 611/7496 useless extension candidates. Maximal degree in co-relation 8421. Up to 4395 conditions per place. [2023-11-06 22:21:24,510 INFO L140 encePairwiseOnDemand]: 340/356 looper letters, 35 selfloop transitions, 0 changer transitions 0/101 dead transitions. [2023-11-06 22:21:24,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 101 transitions, 282 flow [2023-11-06 22:21:24,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:21:24,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:21:24,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 455 transitions. [2023-11-06 22:21:24,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6390449438202247 [2023-11-06 22:21:24,514 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 455 transitions. [2023-11-06 22:21:24,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 455 transitions. [2023-11-06 22:21:24,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:24,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 455 transitions. [2023-11-06 22:21:24,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 227.5) internal successors, (455), 2 states have internal predecessors, (455), 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 22:21:24,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 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 22:21:24,523 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 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 22:21:24,523 INFO L175 Difference]: Start difference. First operand has 108 places, 117 transitions, 244 flow. Second operand 2 states and 455 transitions. [2023-11-06 22:21:24,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 101 transitions, 282 flow [2023-11-06 22:21:24,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 101 transitions, 282 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:21:24,529 INFO L231 Difference]: Finished difference. Result has 107 places, 101 transitions, 212 flow [2023-11-06 22:21:24,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=212, PETRI_PLACES=107, PETRI_TRANSITIONS=101} [2023-11-06 22:21:24,531 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -1 predicate places. [2023-11-06 22:21:24,532 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 101 transitions, 212 flow [2023-11-06 22:21:24,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 203.0) internal successors, (406), 2 states have internal predecessors, (406), 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 22:21:24,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:24,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:21:24,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:21:24,533 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-06 22:21:24,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:24,534 INFO L85 PathProgramCache]: Analyzing trace with hash 976879, now seen corresponding path program 1 times [2023-11-06 22:21:24,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:24,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531250442] [2023-11-06 22:21:24,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:24,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:24,587 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 22:21:24,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:24,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531250442] [2023-11-06 22:21:24,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531250442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:24,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:24,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:21:24,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394716008] [2023-11-06 22:21:24,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:24,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:21:24,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:24,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:21:24,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:21:24,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 356 [2023-11-06 22:21:24,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 101 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 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 22:21:24,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:24,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 356 [2023-11-06 22:21:24,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:25,767 INFO L124 PetriNetUnfolderBase]: 2748/7616 cut-off events. [2023-11-06 22:21:25,768 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-11-06 22:21:25,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12050 conditions, 7616 events. 2748/7616 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 69274 event pairs, 1248 based on Foata normal form. 0/7080 useless extension candidates. Maximal degree in co-relation 12045. Up to 4374 conditions per place. [2023-11-06 22:21:25,834 INFO L140 encePairwiseOnDemand]: 353/356 looper letters, 47 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2023-11-06 22:21:25,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 115 transitions, 338 flow [2023-11-06 22:21:25,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:21:25,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:21:25,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 638 transitions. [2023-11-06 22:21:25,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5973782771535581 [2023-11-06 22:21:25,838 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 638 transitions. [2023-11-06 22:21:25,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 638 transitions. [2023-11-06 22:21:25,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:25,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 638 transitions. [2023-11-06 22:21:25,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 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 22:21:25,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:25,846 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:25,846 INFO L175 Difference]: Start difference. First operand has 107 places, 101 transitions, 212 flow. Second operand 3 states and 638 transitions. [2023-11-06 22:21:25,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 115 transitions, 338 flow [2023-11-06 22:21:25,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 115 transitions, 338 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:21:25,851 INFO L231 Difference]: Finished difference. Result has 110 places, 102 transitions, 224 flow [2023-11-06 22:21:25,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=110, PETRI_TRANSITIONS=102} [2023-11-06 22:21:25,856 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 2 predicate places. [2023-11-06 22:21:25,857 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 102 transitions, 224 flow [2023-11-06 22:21:25,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 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 22:21:25,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:25,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:21:25,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:21:25,858 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-06 22:21:25,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:25,858 INFO L85 PathProgramCache]: Analyzing trace with hash -6446322, now seen corresponding path program 1 times [2023-11-06 22:21:25,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:25,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259900971] [2023-11-06 22:21:25,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:25,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:25,904 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 22:21:25,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:25,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259900971] [2023-11-06 22:21:25,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259900971] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:21:25,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082603673] [2023-11-06 22:21:25,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:25,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:21:25,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a69769b-7398-470a-b645-aab8432364e9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:21:25,908 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a69769b-7398-470a-b645-aab8432364e9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:21:25,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a69769b-7398-470a-b645-aab8432364e9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:21:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:26,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:21:26,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:21:26,027 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 22:21:26,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:21:26,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082603673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:26,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:21:26,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-06 22:21:26,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774567129] [2023-11-06 22:21:26,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:26,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:21:26,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:26,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:21:26,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:21:26,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 356 [2023-11-06 22:21:26,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 102 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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 22:21:26,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:26,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 356 [2023-11-06 22:21:26,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:27,405 INFO L124 PetriNetUnfolderBase]: 3928/9709 cut-off events. [2023-11-06 22:21:27,406 INFO L125 PetriNetUnfolderBase]: For 552/552 co-relation queries the response was YES. [2023-11-06 22:21:27,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16514 conditions, 9709 events. 3928/9709 cut-off events. For 552/552 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 84414 event pairs, 2736 based on Foata normal form. 0/9449 useless extension candidates. Maximal degree in co-relation 16507. Up to 6180 conditions per place. [2023-11-06 22:21:27,476 INFO L140 encePairwiseOnDemand]: 348/356 looper letters, 48 selfloop transitions, 3 changer transitions 0/107 dead transitions. [2023-11-06 22:21:27,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 107 transitions, 348 flow [2023-11-06 22:21:27,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:21:27,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:21:27,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 615 transitions. [2023-11-06 22:21:27,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5758426966292135 [2023-11-06 22:21:27,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 615 transitions. [2023-11-06 22:21:27,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 615 transitions. [2023-11-06 22:21:27,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:27,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 615 transitions. [2023-11-06 22:21:27,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 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 22:21:27,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:27,488 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:27,488 INFO L175 Difference]: Start difference. First operand has 110 places, 102 transitions, 224 flow. Second operand 3 states and 615 transitions. [2023-11-06 22:21:27,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 107 transitions, 348 flow [2023-11-06 22:21:27,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 107 transitions, 345 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:21:27,495 INFO L231 Difference]: Finished difference. Result has 107 places, 100 transitions, 235 flow [2023-11-06 22:21:27,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=107, PETRI_TRANSITIONS=100} [2023-11-06 22:21:27,497 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -1 predicate places. [2023-11-06 22:21:27,497 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 100 transitions, 235 flow [2023-11-06 22:21:27,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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 22:21:27,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:27,499 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 22:21:27,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a69769b-7398-470a-b645-aab8432364e9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:21:27,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a69769b-7398-470a-b645-aab8432364e9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 22:21:27,704 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-06 22:21:27,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:27,704 INFO L85 PathProgramCache]: Analyzing trace with hash -719729379, now seen corresponding path program 1 times [2023-11-06 22:21:27,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:27,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96050751] [2023-11-06 22:21:27,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:27,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:21:27,735 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:21:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:21:27,768 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:21:27,769 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:21:27,769 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2023-11-06 22:21:27,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2023-11-06 22:21:27,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2023-11-06 22:21:27,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2023-11-06 22:21:27,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2023-11-06 22:21:27,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2023-11-06 22:21:27,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2023-11-06 22:21:27,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2023-11-06 22:21:27,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2023-11-06 22:21:27,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2023-11-06 22:21:27,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2023-11-06 22:21:27,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2023-11-06 22:21:27,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2023-11-06 22:21:27,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2023-11-06 22:21:27,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2023-11-06 22:21:27,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2023-11-06 22:21:27,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2023-11-06 22:21:27,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2023-11-06 22:21:27,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2023-11-06 22:21:27,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2023-11-06 22:21:27,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2023-11-06 22:21:27,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2023-11-06 22:21:27,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2023-11-06 22:21:27,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:21:27,775 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-06 22:21:27,777 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:21:27,777 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 22:21:27,832 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:21:27,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 289 transitions, 596 flow [2023-11-06 22:21:27,951 INFO L124 PetriNetUnfolderBase]: 38/458 cut-off events. [2023-11-06 22:21:27,951 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:21:27,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 458 events. 38/458 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1991 event pairs, 0 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 337. Up to 8 conditions per place. [2023-11-06 22:21:27,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 273 places, 289 transitions, 596 flow [2023-11-06 22:21:27,965 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 273 places, 289 transitions, 596 flow [2023-11-06 22:21:27,965 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:21:27,966 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 273 places, 289 transitions, 596 flow [2023-11-06 22:21:27,966 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 273 places, 289 transitions, 596 flow [2023-11-06 22:21:27,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 289 transitions, 596 flow [2023-11-06 22:21:28,070 INFO L124 PetriNetUnfolderBase]: 38/458 cut-off events. [2023-11-06 22:21:28,071 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:21:28,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 458 events. 38/458 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1991 event pairs, 0 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 337. Up to 8 conditions per place. [2023-11-06 22:21:28,112 INFO L119 LiptonReduction]: Number of co-enabled transitions 49896 [2023-11-06 22:21:32,432 INFO L134 LiptonReduction]: Checked pairs total: 248579 [2023-11-06 22:21:32,433 INFO L136 LiptonReduction]: Total number of compositions: 157 [2023-11-06 22:21:32,435 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:21:32,438 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;@2d957d9a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:21:32,438 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-11-06 22:21:32,440 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:21:32,440 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-06 22:21:32,440 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:21:32,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:32,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:21:32,441 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-11-06 22:21:32,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:32,441 INFO L85 PathProgramCache]: Analyzing trace with hash 47926, now seen corresponding path program 1 times [2023-11-06 22:21:32,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:32,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337142010] [2023-11-06 22:21:32,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:32,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:32,464 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 22:21:32,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:32,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337142010] [2023-11-06 22:21:32,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337142010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:32,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:32,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:21:32,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302444071] [2023-11-06 22:21:32,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:32,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:21:32,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:32,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:21:32,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:21:32,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 446 [2023-11-06 22:21:32,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 165 transitions, 348 flow. Second operand has 2 states, 2 states have (on average 263.0) internal successors, (526), 2 states have internal predecessors, (526), 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 22:21:32,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:32,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 446 [2023-11-06 22:21:32,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:46,779 INFO L124 PetriNetUnfolderBase]: 55476/113616 cut-off events. [2023-11-06 22:21:46,779 INFO L125 PetriNetUnfolderBase]: For 1087/1087 co-relation queries the response was YES. [2023-11-06 22:21:47,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191233 conditions, 113616 events. 55476/113616 cut-off events. For 1087/1087 co-relation queries the response was YES. Maximal size of possible extension queue 2391. Compared 1282432 event pairs, 55476 based on Foata normal form. 7973/112904 useless extension candidates. Maximal degree in co-relation 102581. Up to 76896 conditions per place. [2023-11-06 22:21:47,873 INFO L140 encePairwiseOnDemand]: 424/446 looper letters, 48 selfloop transitions, 0 changer transitions 0/143 dead transitions. [2023-11-06 22:21:47,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 143 transitions, 400 flow [2023-11-06 22:21:47,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:21:47,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:21:47,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 594 transitions. [2023-11-06 22:21:47,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6659192825112108 [2023-11-06 22:21:47,881 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 594 transitions. [2023-11-06 22:21:47,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 594 transitions. [2023-11-06 22:21:47,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:47,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 594 transitions. [2023-11-06 22:21:47,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 297.0) internal successors, (594), 2 states have internal predecessors, (594), 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 22:21:47,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 446.0) internal successors, (1338), 3 states have internal predecessors, (1338), 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 22:21:47,890 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 446.0) internal successors, (1338), 3 states have internal predecessors, (1338), 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 22:21:47,890 INFO L175 Difference]: Start difference. First operand has 152 places, 165 transitions, 348 flow. Second operand 2 states and 594 transitions. [2023-11-06 22:21:47,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 143 transitions, 400 flow [2023-11-06 22:21:47,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 143 transitions, 398 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-06 22:21:47,898 INFO L231 Difference]: Finished difference. Result has 151 places, 143 transitions, 302 flow [2023-11-06 22:21:47,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=302, PETRI_PLACES=151, PETRI_TRANSITIONS=143} [2023-11-06 22:21:47,900 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -1 predicate places. [2023-11-06 22:21:47,900 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 143 transitions, 302 flow [2023-11-06 22:21:47,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 263.0) internal successors, (526), 2 states have internal predecessors, (526), 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 22:21:47,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:47,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:21:47,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:21:47,902 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-11-06 22:21:47,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:47,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1486136, now seen corresponding path program 1 times [2023-11-06 22:21:47,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:47,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973661321] [2023-11-06 22:21:47,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:47,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:47,953 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 22:21:47,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:47,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973661321] [2023-11-06 22:21:47,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973661321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:47,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:47,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:21:47,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464171413] [2023-11-06 22:21:47,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:47,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:21:47,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:47,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:21:47,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:21:47,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 446 [2023-11-06 22:21:47,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 143 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 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 22:21:47,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:47,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 446 [2023-11-06 22:21:47,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:01,620 INFO L124 PetriNetUnfolderBase]: 55476/118428 cut-off events. [2023-11-06 22:22:01,620 INFO L125 PetriNetUnfolderBase]: For 650/650 co-relation queries the response was YES. [2023-11-06 22:22:01,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195871 conditions, 118428 events. 55476/118428 cut-off events. For 650/650 co-relation queries the response was YES. Maximal size of possible extension queue 2466. Compared 1389116 event pairs, 35724 based on Foata normal form. 0/110076 useless extension candidates. Maximal degree in co-relation 195865. Up to 76875 conditions per place. [2023-11-06 22:22:02,503 INFO L140 encePairwiseOnDemand]: 443/446 looper letters, 60 selfloop transitions, 2 changer transitions 0/157 dead transitions. [2023-11-06 22:22:02,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 157 transitions, 454 flow [2023-11-06 22:22:02,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:22:02,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:22:02,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 831 transitions. [2023-11-06 22:22:02,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6210762331838565 [2023-11-06 22:22:02,511 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 831 transitions. [2023-11-06 22:22:02,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 831 transitions. [2023-11-06 22:22:02,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:02,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 831 transitions. [2023-11-06 22:22:02,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 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 22:22:02,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 446.0) internal successors, (1784), 4 states have internal predecessors, (1784), 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 22:22:02,520 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 446.0) internal successors, (1784), 4 states have internal predecessors, (1784), 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 22:22:02,521 INFO L175 Difference]: Start difference. First operand has 151 places, 143 transitions, 302 flow. Second operand 3 states and 831 transitions. [2023-11-06 22:22:02,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 157 transitions, 454 flow [2023-11-06 22:22:02,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 157 transitions, 454 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:22:02,527 INFO L231 Difference]: Finished difference. Result has 154 places, 144 transitions, 314 flow [2023-11-06 22:22:02,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=154, PETRI_TRANSITIONS=144} [2023-11-06 22:22:02,528 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, 2 predicate places. [2023-11-06 22:22:02,529 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 144 transitions, 314 flow [2023-11-06 22:22:02,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 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 22:22:02,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:02,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:02,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:22:02,530 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-11-06 22:22:02,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:02,531 INFO L85 PathProgramCache]: Analyzing trace with hash 2139825211, now seen corresponding path program 1 times [2023-11-06 22:22:02,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:02,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466401901] [2023-11-06 22:22:02,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:02,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:02,583 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 22:22:02,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:02,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466401901] [2023-11-06 22:22:02,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466401901] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:22:02,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366962107] [2023-11-06 22:22:02,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:02,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:22:02,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a69769b-7398-470a-b645-aab8432364e9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:22:02,588 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a69769b-7398-470a-b645-aab8432364e9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:22:02,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a69769b-7398-470a-b645-aab8432364e9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:22:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:02,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:22:02,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:22:02,699 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 22:22:02,699 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:22:02,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366962107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:02,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:22:02,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-06 22:22:02,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524782505] [2023-11-06 22:22:02,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:02,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:22:02,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:02,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:22:02,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:22:02,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 446 [2023-11-06 22:22:02,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 144 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 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 22:22:02,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:02,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 446 [2023-11-06 22:22:02,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand