./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version cf1a7837 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_70e59360-1654-461d-8f86-023c2a683984/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e59360-1654-461d-8f86-023c2a683984/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e59360-1654-461d-8f86-023c2a683984/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e59360-1654-461d-8f86-023c2a683984/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e59360-1654-461d-8f86-023c2a683984/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e59360-1654-461d-8f86-023c2a683984/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b7e9feb6929ab81158cc9d6731414a71af210f92cb571da2954e02689fee6d2b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:09:34,464 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:09:34,536 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e59360-1654-461d-8f86-023c2a683984/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-12 02:09:34,542 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:09:34,543 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:09:34,570 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:09:34,571 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:09:34,571 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:09:34,572 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:09:34,573 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:09:34,574 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:09:34,574 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:09:34,575 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:09:34,575 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:09:34,576 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:09:34,576 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:09:34,577 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:09:34,578 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:09:34,578 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:09:34,579 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:09:34,579 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:09:34,580 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:09:34,581 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-12 02:09:34,581 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:09:34,582 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:09:34,582 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:09:34,583 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:09:34,584 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:09:34,584 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:09:34,585 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:09:34,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:09:34,586 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:09:34,587 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:09:34,587 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:09:34,588 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:09:34,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:09:34,589 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:09:34,589 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:09:34,590 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:09:34,590 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:09:34,591 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:09:34,591 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_70e59360-1654-461d-8f86-023c2a683984/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e59360-1654-461d-8f86-023c2a683984/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7e9feb6929ab81158cc9d6731414a71af210f92cb571da2954e02689fee6d2b [2023-11-12 02:09:34,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:09:34,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:09:34,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:09:34,927 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:09:34,928 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:09:34,930 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e59360-1654-461d-8f86-023c2a683984/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i [2023-11-12 02:09:38,136 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:09:38,439 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:09:38,440 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e59360-1654-461d-8f86-023c2a683984/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i [2023-11-12 02:09:38,457 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e59360-1654-461d-8f86-023c2a683984/bin/uautomizer-verify-uTZkv6EMXl/data/467d29100/97ba444d477e47dfb7dc334601d428db/FLAG14d8f35d4 [2023-11-12 02:09:38,482 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e59360-1654-461d-8f86-023c2a683984/bin/uautomizer-verify-uTZkv6EMXl/data/467d29100/97ba444d477e47dfb7dc334601d428db [2023-11-12 02:09:38,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:09:38,490 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:09:38,493 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:09:38,495 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:09:38,501 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:09:38,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:09:38" (1/1) ... [2023-11-12 02:09:38,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7935c586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:38, skipping insertion in model container [2023-11-12 02:09:38,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:09:38" (1/1) ... [2023-11-12 02:09:38,577 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:09:38,733 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 02:09:39,077 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:09:39,091 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:09:39,112 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 02:09:39,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:09:39,242 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:09:39,251 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:09:39,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:39 WrapperNode [2023-11-12 02:09:39,252 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:09:39,253 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:09:39,253 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:09:39,254 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:09:39,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:39" (1/1) ... [2023-11-12 02:09:39,287 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:39" (1/1) ... [2023-11-12 02:09:39,350 INFO L138 Inliner]: procedures = 224, calls = 44, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 229 [2023-11-12 02:09:39,352 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:09:39,353 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:09:39,353 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:09:39,353 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:09:39,364 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:39" (1/1) ... [2023-11-12 02:09:39,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:39" (1/1) ... [2023-11-12 02:09:39,370 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:39" (1/1) ... [2023-11-12 02:09:39,371 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:39" (1/1) ... [2023-11-12 02:09:39,398 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:39" (1/1) ... [2023-11-12 02:09:39,402 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:39" (1/1) ... [2023-11-12 02:09:39,405 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:39" (1/1) ... [2023-11-12 02:09:39,408 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:39" (1/1) ... [2023-11-12 02:09:39,413 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:09:39,414 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:09:39,414 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:09:39,414 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:09:39,415 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:39" (1/1) ... [2023-11-12 02:09:39,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:09:39,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e59360-1654-461d-8f86-023c2a683984/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:39,451 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e59360-1654-461d-8f86-023c2a683984/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:09:39,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e59360-1654-461d-8f86-023c2a683984/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:09:39,509 INFO L130 BoogieDeclarations]: Found specification of procedure reader_fn [2023-11-12 02:09:39,509 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_fn [2023-11-12 02:09:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:09:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:09:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:09:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:09:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:09:39,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:09:39,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:09:39,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:09:39,514 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:09:39,685 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:09:39,694 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:09:40,320 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:09:40,332 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:09:40,344 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-12 02:09:40,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:09:40 BoogieIcfgContainer [2023-11-12 02:09:40,347 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:09:40,350 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:09:40,350 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:09:40,353 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:09:40,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:09:38" (1/3) ... [2023-11-12 02:09:40,354 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c17a38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:09:40, skipping insertion in model container [2023-11-12 02:09:40,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:39" (2/3) ... [2023-11-12 02:09:40,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c17a38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:09:40, skipping insertion in model container [2023-11-12 02:09:40,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:09:40" (3/3) ... [2023-11-12 02:09:40,356 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_1w1r-2.i [2023-11-12 02:09:40,371 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:09:40,383 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:09:40,383 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-11-12 02:09:40,383 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:09:40,557 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-12 02:09:40,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 270 places, 279 transitions, 565 flow [2023-11-12 02:09:40,729 INFO L124 PetriNetUnfolderBase]: 13/278 cut-off events. [2023-11-12 02:09:40,730 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:09:40,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 278 events. 13/278 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 618 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 225. Up to 2 conditions per place. [2023-11-12 02:09:40,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 270 places, 279 transitions, 565 flow [2023-11-12 02:09:40,772 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 269 transitions, 541 flow [2023-11-12 02:09:40,775 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:09:40,794 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 260 places, 269 transitions, 541 flow [2023-11-12 02:09:40,798 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 260 places, 269 transitions, 541 flow [2023-11-12 02:09:40,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 269 transitions, 541 flow [2023-11-12 02:09:40,931 INFO L124 PetriNetUnfolderBase]: 13/269 cut-off events. [2023-11-12 02:09:40,931 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:09:40,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 269 events. 13/269 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 552 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 225. Up to 2 conditions per place. [2023-11-12 02:09:40,950 INFO L119 LiptonReduction]: Number of co-enabled transitions 24112 [2023-11-12 02:09:53,222 INFO L134 LiptonReduction]: Checked pairs total: 139802 [2023-11-12 02:09:53,222 INFO L136 LiptonReduction]: Total number of compositions: 198 [2023-11-12 02:09:53,239 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:09:53,246 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@58d962f4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:09:53,247 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-11-12 02:09:53,248 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:09:53,248 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:09:53,249 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:09:53,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:53,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:09:53,250 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-12 02:09:53,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:53,256 INFO L85 PathProgramCache]: Analyzing trace with hash 979, now seen corresponding path program 1 times [2023-11-12 02:09:53,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:53,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001380689] [2023-11-12 02:09:53,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:53,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:53,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:53,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:53,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001380689] [2023-11-12 02:09:53,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001380689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:53,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:53,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:09:53,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545106330] [2023-11-12 02:09:53,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:53,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:09:53,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:53,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:09:53,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:09:53,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 477 [2023-11-12 02:09:53,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 121 transitions, 245 flow. Second operand has 2 states, 2 states have (on average 268.5) internal successors, (537), 2 states have internal predecessors, (537), 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) [2023-11-12 02:09:53,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:53,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 477 [2023-11-12 02:09:53,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:53,718 INFO L124 PetriNetUnfolderBase]: 137/797 cut-off events. [2023-11-12 02:09:53,719 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:09:53,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1048 conditions, 797 events. 137/797 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4842 event pairs, 87 based on Foata normal form. 39/740 useless extension candidates. Maximal degree in co-relation 1039. Up to 247 conditions per place. [2023-11-12 02:09:53,728 INFO L140 encePairwiseOnDemand]: 470/477 looper letters, 24 selfloop transitions, 0 changer transitions 0/114 dead transitions. [2023-11-12 02:09:53,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 114 transitions, 279 flow [2023-11-12 02:09:53,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:09:53,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:09:53,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 567 transitions. [2023-11-12 02:09:53,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5943396226415094 [2023-11-12 02:09:53,760 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 567 transitions. [2023-11-12 02:09:53,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 567 transitions. [2023-11-12 02:09:53,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:53,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 567 transitions. [2023-11-12 02:09:53,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 283.5) internal successors, (567), 2 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) [2023-11-12 02:09:53,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 477.0) internal successors, (1431), 3 states have internal predecessors, (1431), 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) [2023-11-12 02:09:53,785 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 477.0) internal successors, (1431), 3 states have internal predecessors, (1431), 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) [2023-11-12 02:09:53,787 INFO L175 Difference]: Start difference. First operand has 116 places, 121 transitions, 245 flow. Second operand 2 states and 567 transitions. [2023-11-12 02:09:53,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 114 transitions, 279 flow [2023-11-12 02:09:53,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 114 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:09:53,796 INFO L231 Difference]: Finished difference. Result has 114 places, 114 transitions, 230 flow [2023-11-12 02:09:53,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=230, PETRI_PLACES=114, PETRI_TRANSITIONS=114} [2023-11-12 02:09:53,805 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, -2 predicate places. [2023-11-12 02:09:53,806 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 114 transitions, 230 flow [2023-11-12 02:09:53,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 268.5) internal successors, (537), 2 states have internal predecessors, (537), 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) [2023-11-12 02:09:53,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:53,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:53,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:09:53,808 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-12 02:09:53,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:53,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1848050519, now seen corresponding path program 1 times [2023-11-12 02:09:53,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:53,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464708960] [2023-11-12 02:09:53,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:53,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:54,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:54,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:54,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464708960] [2023-11-12 02:09:54,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464708960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:54,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:54,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:09:54,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651898912] [2023-11-12 02:09:54,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:54,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:09:54,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:54,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:09:54,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:54,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 477 [2023-11-12 02:09:54,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 114 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 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) [2023-11-12 02:09:54,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:54,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 477 [2023-11-12 02:09:54,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:54,471 INFO L124 PetriNetUnfolderBase]: 252/1397 cut-off events. [2023-11-12 02:09:54,472 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:09:54,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1851 conditions, 1397 events. 252/1397 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9108 event pairs, 126 based on Foata normal form. 0/1242 useless extension candidates. Maximal degree in co-relation 1848. Up to 248 conditions per place. [2023-11-12 02:09:54,485 INFO L140 encePairwiseOnDemand]: 474/477 looper letters, 42 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2023-11-12 02:09:54,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 134 transitions, 358 flow [2023-11-12 02:09:54,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:09:54,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:09:54,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 831 transitions. [2023-11-12 02:09:54,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5807127882599581 [2023-11-12 02:09:54,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 831 transitions. [2023-11-12 02:09:54,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 831 transitions. [2023-11-12 02:09:54,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:54,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 831 transitions. [2023-11-12 02:09:54,496 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) [2023-11-12 02:09:54,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 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) [2023-11-12 02:09:54,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 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) [2023-11-12 02:09:54,504 INFO L175 Difference]: Start difference. First operand has 114 places, 114 transitions, 230 flow. Second operand 3 states and 831 transitions. [2023-11-12 02:09:54,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 134 transitions, 358 flow [2023-11-12 02:09:54,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 134 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:09:54,513 INFO L231 Difference]: Finished difference. Result has 117 places, 115 transitions, 242 flow [2023-11-12 02:09:54,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=117, PETRI_TRANSITIONS=115} [2023-11-12 02:09:54,515 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 1 predicate places. [2023-11-12 02:09:54,515 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 115 transitions, 242 flow [2023-11-12 02:09:54,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 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) [2023-11-12 02:09:54,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:54,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:54,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:09:54,525 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-12 02:09:54,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:54,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1061040120, now seen corresponding path program 1 times [2023-11-12 02:09:54,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:54,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952828908] [2023-11-12 02:09:54,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:54,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:55,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:55,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:55,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952828908] [2023-11-12 02:09:55,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952828908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:55,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:55,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:09:55,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314178904] [2023-11-12 02:09:55,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:55,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:09:55,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:55,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:09:55,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:09:56,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 477 [2023-11-12 02:09:56,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 115 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 227.5) internal successors, (1365), 6 states have internal predecessors, (1365), 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) [2023-11-12 02:09:56,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:56,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 477 [2023-11-12 02:09:56,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:57,561 INFO L124 PetriNetUnfolderBase]: 1873/5612 cut-off events. [2023-11-12 02:09:57,561 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-12 02:09:57,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9196 conditions, 5612 events. 1873/5612 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 44122 event pairs, 403 based on Foata normal form. 0/5146 useless extension candidates. Maximal degree in co-relation 9191. Up to 2038 conditions per place. [2023-11-12 02:09:57,604 INFO L140 encePairwiseOnDemand]: 453/477 looper letters, 105 selfloop transitions, 33 changer transitions 0/200 dead transitions. [2023-11-12 02:09:57,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 200 transitions, 688 flow [2023-11-12 02:09:57,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:09:57,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:09:57,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1496 transitions. [2023-11-12 02:09:57,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.522711390635919 [2023-11-12 02:09:57,611 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1496 transitions. [2023-11-12 02:09:57,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1496 transitions. [2023-11-12 02:09:57,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:57,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1496 transitions. [2023-11-12 02:09:57,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 249.33333333333334) internal successors, (1496), 6 states have internal predecessors, (1496), 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) [2023-11-12 02:09:57,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 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) [2023-11-12 02:09:57,628 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 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) [2023-11-12 02:09:57,629 INFO L175 Difference]: Start difference. First operand has 117 places, 115 transitions, 242 flow. Second operand 6 states and 1496 transitions. [2023-11-12 02:09:57,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 200 transitions, 688 flow [2023-11-12 02:09:57,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 200 transitions, 686 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:09:57,635 INFO L231 Difference]: Finished difference. Result has 126 places, 147 transitions, 482 flow [2023-11-12 02:09:57,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=482, PETRI_PLACES=126, PETRI_TRANSITIONS=147} [2023-11-12 02:09:57,637 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 10 predicate places. [2023-11-12 02:09:57,637 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 147 transitions, 482 flow [2023-11-12 02:09:57,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 227.5) internal successors, (1365), 6 states have internal predecessors, (1365), 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) [2023-11-12 02:09:57,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:57,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:57,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:09:57,639 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reader_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-12 02:09:57,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:57,640 INFO L85 PathProgramCache]: Analyzing trace with hash 2107285353, now seen corresponding path program 1 times [2023-11-12 02:09:57,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:57,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692769954] [2023-11-12 02:09:57,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:57,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:57,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:57,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:57,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692769954] [2023-11-12 02:09:57,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692769954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:57,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:57,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:09:57,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405210538] [2023-11-12 02:09:57,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:57,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:09:57,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:57,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:09:57,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:09:58,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 477 [2023-11-12 02:09:58,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 147 transitions, 482 flow. Second operand has 6 states, 6 states have (on average 231.5) internal successors, (1389), 6 states have internal predecessors, (1389), 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) [2023-11-12 02:09:58,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:58,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 477 [2023-11-12 02:09:58,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:00,269 INFO L124 PetriNetUnfolderBase]: 1722/6474 cut-off events. [2023-11-12 02:10:00,270 INFO L125 PetriNetUnfolderBase]: For 1089/1094 co-relation queries the response was YES. [2023-11-12 02:10:00,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12256 conditions, 6474 events. 1722/6474 cut-off events. For 1089/1094 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 53901 event pairs, 507 based on Foata normal form. 0/6073 useless extension candidates. Maximal degree in co-relation 12247. Up to 2502 conditions per place. [2023-11-12 02:10:00,324 INFO L140 encePairwiseOnDemand]: 454/477 looper letters, 103 selfloop transitions, 53 changer transitions 0/238 dead transitions. [2023-11-12 02:10:00,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 238 transitions, 1056 flow [2023-11-12 02:10:00,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:10:00,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:10:00,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1507 transitions. [2023-11-12 02:10:00,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526554856743536 [2023-11-12 02:10:00,331 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1507 transitions. [2023-11-12 02:10:00,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1507 transitions. [2023-11-12 02:10:00,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:00,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1507 transitions. [2023-11-12 02:10:00,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 251.16666666666666) internal successors, (1507), 6 states have internal predecessors, (1507), 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) [2023-11-12 02:10:00,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 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) [2023-11-12 02:10:00,347 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 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) [2023-11-12 02:10:00,347 INFO L175 Difference]: Start difference. First operand has 126 places, 147 transitions, 482 flow. Second operand 6 states and 1507 transitions. [2023-11-12 02:10:00,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 238 transitions, 1056 flow [2023-11-12 02:10:00,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 238 transitions, 1056 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:10:00,367 INFO L231 Difference]: Finished difference. Result has 136 places, 198 transitions, 890 flow [2023-11-12 02:10:00,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=890, PETRI_PLACES=136, PETRI_TRANSITIONS=198} [2023-11-12 02:10:00,370 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 20 predicate places. [2023-11-12 02:10:00,371 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 198 transitions, 890 flow [2023-11-12 02:10:00,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 231.5) internal successors, (1389), 6 states have internal predecessors, (1389), 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) [2023-11-12 02:10:00,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:00,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:00,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:10:00,373 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reader_fnErr1ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-12 02:10:00,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:00,374 INFO L85 PathProgramCache]: Analyzing trace with hash -824648111, now seen corresponding path program 1 times [2023-11-12 02:10:00,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:00,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978847459] [2023-11-12 02:10:00,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:00,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:00,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:10:00,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:00,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978847459] [2023-11-12 02:10:00,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978847459] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:00,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:00,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:10:00,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016031179] [2023-11-12 02:10:00,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:00,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:10:00,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:00,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:10:00,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:10:01,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 477 [2023-11-12 02:10:01,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 198 transitions, 890 flow. Second operand has 6 states, 6 states have (on average 231.5) internal successors, (1389), 6 states have internal predecessors, (1389), 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) [2023-11-12 02:10:01,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:01,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 477 [2023-11-12 02:10:01,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:03,593 INFO L124 PetriNetUnfolderBase]: 2163/7453 cut-off events. [2023-11-12 02:10:03,593 INFO L125 PetriNetUnfolderBase]: For 3787/3896 co-relation queries the response was YES. [2023-11-12 02:10:03,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17375 conditions, 7453 events. 2163/7453 cut-off events. For 3787/3896 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 62410 event pairs, 515 based on Foata normal form. 192/7245 useless extension candidates. Maximal degree in co-relation 17361. Up to 3068 conditions per place. [2023-11-12 02:10:03,683 INFO L140 encePairwiseOnDemand]: 456/477 looper letters, 141 selfloop transitions, 86 changer transitions 0/319 dead transitions. [2023-11-12 02:10:03,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 319 transitions, 1928 flow [2023-11-12 02:10:03,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:10:03,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:10:03,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1503 transitions. [2023-11-12 02:10:03,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5251572327044025 [2023-11-12 02:10:03,691 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1503 transitions. [2023-11-12 02:10:03,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1503 transitions. [2023-11-12 02:10:03,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:03,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1503 transitions. [2023-11-12 02:10:03,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.5) internal successors, (1503), 6 states have internal predecessors, (1503), 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) [2023-11-12 02:10:03,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 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) [2023-11-12 02:10:03,709 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 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) [2023-11-12 02:10:03,709 INFO L175 Difference]: Start difference. First operand has 136 places, 198 transitions, 890 flow. Second operand 6 states and 1503 transitions. [2023-11-12 02:10:03,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 319 transitions, 1928 flow [2023-11-12 02:10:03,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 319 transitions, 1928 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:10:03,741 INFO L231 Difference]: Finished difference. Result has 145 places, 279 transitions, 1684 flow [2023-11-12 02:10:03,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1684, PETRI_PLACES=145, PETRI_TRANSITIONS=279} [2023-11-12 02:10:03,745 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 29 predicate places. [2023-11-12 02:10:03,745 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 279 transitions, 1684 flow [2023-11-12 02:10:03,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 231.5) internal successors, (1389), 6 states have internal predecessors, (1389), 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) [2023-11-12 02:10:03,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:03,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:03,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:10:03,747 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-12 02:10:03,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:03,748 INFO L85 PathProgramCache]: Analyzing trace with hash -197824064, now seen corresponding path program 1 times [2023-11-12 02:10:03,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:03,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833158778] [2023-11-12 02:10:03,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:03,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:04,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:10:04,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:04,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833158778] [2023-11-12 02:10:04,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833158778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:04,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:04,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:10:04,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161266122] [2023-11-12 02:10:04,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:04,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:10:04,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:04,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:10:04,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:10:05,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 477 [2023-11-12 02:10:05,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 279 transitions, 1684 flow. Second operand has 6 states, 6 states have (on average 244.5) internal successors, (1467), 6 states have internal predecessors, (1467), 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) [2023-11-12 02:10:05,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:05,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 477 [2023-11-12 02:10:05,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:07,417 INFO L124 PetriNetUnfolderBase]: 2454/8529 cut-off events. [2023-11-12 02:10:07,418 INFO L125 PetriNetUnfolderBase]: For 7609/8026 co-relation queries the response was YES. [2023-11-12 02:10:07,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22704 conditions, 8529 events. 2454/8529 cut-off events. For 7609/8026 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 74624 event pairs, 319 based on Foata normal form. 166/8189 useless extension candidates. Maximal degree in co-relation 22685. Up to 2569 conditions per place. [2023-11-12 02:10:07,515 INFO L140 encePairwiseOnDemand]: 465/477 looper letters, 205 selfloop transitions, 63 changer transitions 0/410 dead transitions. [2023-11-12 02:10:07,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 410 transitions, 2904 flow [2023-11-12 02:10:07,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:10:07,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:10:07,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1566 transitions. [2023-11-12 02:10:07,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5471698113207547 [2023-11-12 02:10:07,523 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1566 transitions. [2023-11-12 02:10:07,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1566 transitions. [2023-11-12 02:10:07,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:07,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1566 transitions. [2023-11-12 02:10:07,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 261.0) internal successors, (1566), 6 states have internal predecessors, (1566), 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) [2023-11-12 02:10:07,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 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) [2023-11-12 02:10:07,541 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 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) [2023-11-12 02:10:07,542 INFO L175 Difference]: Start difference. First operand has 145 places, 279 transitions, 1684 flow. Second operand 6 states and 1566 transitions. [2023-11-12 02:10:07,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 410 transitions, 2904 flow [2023-11-12 02:10:07,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 410 transitions, 2904 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:10:07,622 INFO L231 Difference]: Finished difference. Result has 155 places, 338 transitions, 2356 flow [2023-11-12 02:10:07,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=1684, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2356, PETRI_PLACES=155, PETRI_TRANSITIONS=338} [2023-11-12 02:10:07,626 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 39 predicate places. [2023-11-12 02:10:07,629 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 338 transitions, 2356 flow [2023-11-12 02:10:07,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 244.5) internal successors, (1467), 6 states have internal predecessors, (1467), 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) [2023-11-12 02:10:07,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:07,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:07,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:10:07,631 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reader_fnErr2ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-12 02:10:07,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:07,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1658312877, now seen corresponding path program 1 times [2023-11-12 02:10:07,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:07,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200824101] [2023-11-12 02:10:07,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:07,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:10:08,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:08,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200824101] [2023-11-12 02:10:08,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200824101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:08,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:08,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:10:08,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882857493] [2023-11-12 02:10:08,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:08,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:10:08,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:08,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:10:08,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:10:08,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 477 [2023-11-12 02:10:08,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 338 transitions, 2356 flow. Second operand has 6 states, 6 states have (on average 233.83333333333334) internal successors, (1403), 6 states have internal predecessors, (1403), 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) [2023-11-12 02:10:08,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:08,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 477 [2023-11-12 02:10:08,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:11,334 INFO L124 PetriNetUnfolderBase]: 3081/10394 cut-off events. [2023-11-12 02:10:11,335 INFO L125 PetriNetUnfolderBase]: For 13708/14270 co-relation queries the response was YES. [2023-11-12 02:10:11,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29916 conditions, 10394 events. 3081/10394 cut-off events. For 13708/14270 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 93763 event pairs, 439 based on Foata normal form. 202/10099 useless extension candidates. Maximal degree in co-relation 29892. Up to 3979 conditions per place. [2023-11-12 02:10:11,455 INFO L140 encePairwiseOnDemand]: 456/477 looper letters, 284 selfloop transitions, 70 changer transitions 0/454 dead transitions. [2023-11-12 02:10:11,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 454 transitions, 3684 flow [2023-11-12 02:10:11,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:10:11,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:10:11,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1524 transitions. [2023-11-12 02:10:11,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5324947589098532 [2023-11-12 02:10:11,463 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1524 transitions. [2023-11-12 02:10:11,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1524 transitions. [2023-11-12 02:10:11,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:11,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1524 transitions. [2023-11-12 02:10:11,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 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) [2023-11-12 02:10:11,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 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) [2023-11-12 02:10:11,476 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 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) [2023-11-12 02:10:11,477 INFO L175 Difference]: Start difference. First operand has 155 places, 338 transitions, 2356 flow. Second operand 6 states and 1524 transitions. [2023-11-12 02:10:11,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 454 transitions, 3684 flow [2023-11-12 02:10:11,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 454 transitions, 3684 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:10:11,532 INFO L231 Difference]: Finished difference. Result has 165 places, 400 transitions, 3130 flow [2023-11-12 02:10:11,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=2356, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3130, PETRI_PLACES=165, PETRI_TRANSITIONS=400} [2023-11-12 02:10:11,534 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 49 predicate places. [2023-11-12 02:10:11,535 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 400 transitions, 3130 flow [2023-11-12 02:10:11,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.83333333333334) internal successors, (1403), 6 states have internal predecessors, (1403), 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) [2023-11-12 02:10:11,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:11,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:11,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:10:11,536 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reader_fnErr3ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-12 02:10:11,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:11,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1131555919, now seen corresponding path program 1 times [2023-11-12 02:10:11,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:11,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027820195] [2023-11-12 02:10:11,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:11,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:12,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:10:12,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:12,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027820195] [2023-11-12 02:10:12,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027820195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:12,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:12,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:10:12,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823815250] [2023-11-12 02:10:12,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:12,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:10:12,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:12,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:10:12,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:10:12,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 477 [2023-11-12 02:10:12,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 400 transitions, 3130 flow. Second operand has 6 states, 6 states have (on average 238.83333333333334) internal successors, (1433), 6 states have internal predecessors, (1433), 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) [2023-11-12 02:10:12,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:12,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 477 [2023-11-12 02:10:12,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:15,348 INFO L124 PetriNetUnfolderBase]: 2955/10487 cut-off events. [2023-11-12 02:10:15,348 INFO L125 PetriNetUnfolderBase]: For 19808/20317 co-relation queries the response was YES. [2023-11-12 02:10:15,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32920 conditions, 10487 events. 2955/10487 cut-off events. For 19808/20317 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 96016 event pairs, 569 based on Foata normal form. 165/10208 useless extension candidates. Maximal degree in co-relation 32891. Up to 4328 conditions per place. [2023-11-12 02:10:15,433 INFO L140 encePairwiseOnDemand]: 463/477 looper letters, 331 selfloop transitions, 81 changer transitions 0/528 dead transitions. [2023-11-12 02:10:15,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 528 transitions, 4954 flow [2023-11-12 02:10:15,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:10:15,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:10:15,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1534 transitions. [2023-11-12 02:10:15,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359888190076869 [2023-11-12 02:10:15,443 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1534 transitions. [2023-11-12 02:10:15,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1534 transitions. [2023-11-12 02:10:15,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:15,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1534 transitions. [2023-11-12 02:10:15,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 255.66666666666666) internal successors, (1534), 6 states have internal predecessors, (1534), 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) [2023-11-12 02:10:15,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 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) [2023-11-12 02:10:15,456 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 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) [2023-11-12 02:10:15,456 INFO L175 Difference]: Start difference. First operand has 165 places, 400 transitions, 3130 flow. Second operand 6 states and 1534 transitions. [2023-11-12 02:10:15,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 528 transitions, 4954 flow [2023-11-12 02:10:15,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 528 transitions, 4634 flow, removed 160 selfloop flow, removed 0 redundant places. [2023-11-12 02:10:15,538 INFO L231 Difference]: Finished difference. Result has 174 places, 480 transitions, 3928 flow [2023-11-12 02:10:15,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=2970, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3928, PETRI_PLACES=174, PETRI_TRANSITIONS=480} [2023-11-12 02:10:15,541 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 58 predicate places. [2023-11-12 02:10:15,541 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 480 transitions, 3928 flow [2023-11-12 02:10:15,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 238.83333333333334) internal successors, (1433), 6 states have internal predecessors, (1433), 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) [2023-11-12 02:10:15,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:15,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:15,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:10:15,543 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-12 02:10:15,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:15,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1111985703, now seen corresponding path program 1 times [2023-11-12 02:10:15,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:15,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132645653] [2023-11-12 02:10:15,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:15,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:16,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:10:16,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:16,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132645653] [2023-11-12 02:10:16,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132645653] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:16,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:16,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:10:16,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564498] [2023-11-12 02:10:16,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:16,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:10:16,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:16,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:10:16,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:10:16,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 477 [2023-11-12 02:10:16,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 480 transitions, 3928 flow. Second operand has 6 states, 6 states have (on average 194.83333333333334) internal successors, (1169), 6 states have internal predecessors, (1169), 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) [2023-11-12 02:10:16,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:16,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 477 [2023-11-12 02:10:16,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:21,933 INFO L124 PetriNetUnfolderBase]: 10628/23444 cut-off events. [2023-11-12 02:10:21,934 INFO L125 PetriNetUnfolderBase]: For 37199/37647 co-relation queries the response was YES. [2023-11-12 02:10:22,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81720 conditions, 23444 events. 10628/23444 cut-off events. For 37199/37647 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 187778 event pairs, 5155 based on Foata normal form. 80/22586 useless extension candidates. Maximal degree in co-relation 81686. Up to 19741 conditions per place. [2023-11-12 02:10:22,201 INFO L140 encePairwiseOnDemand]: 439/477 looper letters, 427 selfloop transitions, 201 changer transitions 0/666 dead transitions. [2023-11-12 02:10:22,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 666 transitions, 6044 flow [2023-11-12 02:10:22,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:10:22,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:10:22,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1406 transitions. [2023-11-12 02:10:22,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4912648497554158 [2023-11-12 02:10:22,209 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1406 transitions. [2023-11-12 02:10:22,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1406 transitions. [2023-11-12 02:10:22,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:22,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1406 transitions. [2023-11-12 02:10:22,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 234.33333333333334) internal successors, (1406), 6 states have internal predecessors, (1406), 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) [2023-11-12 02:10:22,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 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) [2023-11-12 02:10:22,223 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 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) [2023-11-12 02:10:22,224 INFO L175 Difference]: Start difference. First operand has 174 places, 480 transitions, 3928 flow. Second operand 6 states and 1406 transitions. [2023-11-12 02:10:22,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 666 transitions, 6044 flow [2023-11-12 02:10:22,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 666 transitions, 5916 flow, removed 64 selfloop flow, removed 0 redundant places. [2023-11-12 02:10:22,444 INFO L231 Difference]: Finished difference. Result has 183 places, 622 transitions, 5216 flow [2023-11-12 02:10:22,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=3800, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5216, PETRI_PLACES=183, PETRI_TRANSITIONS=622} [2023-11-12 02:10:22,446 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 67 predicate places. [2023-11-12 02:10:22,446 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 622 transitions, 5216 flow [2023-11-12 02:10:22,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 194.83333333333334) internal successors, (1169), 6 states have internal predecessors, (1169), 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) [2023-11-12 02:10:22,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:22,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:22,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:10:22,448 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reader_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-12 02:10:22,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:22,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1151681400, now seen corresponding path program 1 times [2023-11-12 02:10:22,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:22,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386229920] [2023-11-12 02:10:22,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:22,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat