./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/thread-join-binomial-race.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 527bcce2 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_24a536ae-9efd-4592-8db9-91f2eb6ac649/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a536ae-9efd-4592-8db9-91f2eb6ac649/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a536ae-9efd-4592-8db9-91f2eb6ac649/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a536ae-9efd-4592-8db9-91f2eb6ac649/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/thread-join-binomial-race.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a536ae-9efd-4592-8db9-91f2eb6ac649/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a536ae-9efd-4592-8db9-91f2eb6ac649/bin/uautomizer-verify-bycVGegfSx --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 f3721357e68fd557f222f8a0ce5068ab4a46e5f8573d31ce219014656501246c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:28:24,710 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:28:24,778 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a536ae-9efd-4592-8db9-91f2eb6ac649/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-21 22:28:24,784 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:28:24,785 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:28:24,811 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:28:24,812 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:28:24,812 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:28:24,813 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:28:24,814 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:28:24,815 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:28:24,816 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:28:24,816 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:28:24,817 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:28:24,818 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:28:24,818 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:28:24,819 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:28:24,819 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:28:24,820 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:28:24,820 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:28:24,821 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:28:24,822 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:28:24,822 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-21 22:28:24,823 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:28:24,823 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:28:24,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:28:24,824 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:28:24,824 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:28:24,825 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:28:24,825 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:28:24,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:28:24,826 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:28:24,826 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:28:24,827 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:28:24,827 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:28:24,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:28:24,827 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:28:24,828 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:28:24,828 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:28:24,828 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:28:24,828 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:28:24,829 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_24a536ae-9efd-4592-8db9-91f2eb6ac649/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a536ae-9efd-4592-8db9-91f2eb6ac649/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3721357e68fd557f222f8a0ce5068ab4a46e5f8573d31ce219014656501246c [2023-11-21 22:28:25,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:28:25,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:28:25,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:28:25,176 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:28:25,177 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:28:25,179 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a536ae-9efd-4592-8db9-91f2eb6ac649/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-race-challenges/thread-join-binomial-race.i [2023-11-21 22:28:28,234 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:28:28,710 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:28:28,711 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a536ae-9efd-4592-8db9-91f2eb6ac649/sv-benchmarks/c/pthread-race-challenges/thread-join-binomial-race.i [2023-11-21 22:28:28,744 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a536ae-9efd-4592-8db9-91f2eb6ac649/bin/uautomizer-verify-bycVGegfSx/data/d8caa3903/a33663ab0de547d28dff5ed3245373bc/FLAGeb2f65981 [2023-11-21 22:28:28,769 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a536ae-9efd-4592-8db9-91f2eb6ac649/bin/uautomizer-verify-bycVGegfSx/data/d8caa3903/a33663ab0de547d28dff5ed3245373bc [2023-11-21 22:28:28,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:28:28,779 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:28:28,782 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:28:28,783 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:28:28,788 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:28:28,792 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:28:28" (1/1) ... [2023-11-21 22:28:28,794 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b110665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:28, skipping insertion in model container [2023-11-21 22:28:28,794 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:28:28" (1/1) ... [2023-11-21 22:28:28,860 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:28:29,099 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:28:29,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:28:29,482 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:28:29,499 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:28:29,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:28:29,602 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:28:29,609 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:28:29,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:29 WrapperNode [2023-11-21 22:28:29,610 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:28:29,611 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:28:29,612 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:28:29,612 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:28:29,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:29" (1/1) ... [2023-11-21 22:28:29,643 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:29" (1/1) ... [2023-11-21 22:28:29,674 INFO L138 Inliner]: procedures = 269, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2023-11-21 22:28:29,675 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:28:29,676 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:28:29,676 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:28:29,676 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:28:29,691 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:29" (1/1) ... [2023-11-21 22:28:29,692 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:29" (1/1) ... [2023-11-21 22:28:29,701 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:29" (1/1) ... [2023-11-21 22:28:29,702 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:29" (1/1) ... [2023-11-21 22:28:29,715 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:29" (1/1) ... [2023-11-21 22:28:29,719 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:29" (1/1) ... [2023-11-21 22:28:29,722 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:29" (1/1) ... [2023-11-21 22:28:29,724 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:29" (1/1) ... [2023-11-21 22:28:29,729 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:28:29,730 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:28:29,730 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:28:29,730 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:28:29,731 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:29" (1/1) ... [2023-11-21 22:28:29,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:28:29,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a536ae-9efd-4592-8db9-91f2eb6ac649/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:28:29,774 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a536ae-9efd-4592-8db9-91f2eb6ac649/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:28:29,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a536ae-9efd-4592-8db9-91f2eb6ac649/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:28:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 22:28:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:28:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 22:28:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-21 22:28:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:28:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:28:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-21 22:28:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:28:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:28:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 22:28:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:28:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-21 22:28:29,819 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-21 22:28:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:28:29,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:28:29,821 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:28:29,988 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:28:29,990 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:28:30,499 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:28:30,521 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:28:30,522 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 22:28:30,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:28:30 BoogieIcfgContainer [2023-11-21 22:28:30,524 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:28:30,526 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:28:30,526 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:28:30,530 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:28:30,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:28:28" (1/3) ... [2023-11-21 22:28:30,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5b6cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:28:30, skipping insertion in model container [2023-11-21 22:28:30,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:29" (2/3) ... [2023-11-21 22:28:30,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5b6cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:28:30, skipping insertion in model container [2023-11-21 22:28:30,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:28:30" (3/3) ... [2023-11-21 22:28:30,533 INFO L112 eAbstractionObserver]: Analyzing ICFG thread-join-binomial-race.i [2023-11-21 22:28:30,541 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 22:28:30,550 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:28:30,550 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-21 22:28:30,550 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:28:30,673 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-21 22:28:30,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 239 transitions, 491 flow [2023-11-21 22:28:30,848 INFO L124 PetriNetUnfolderBase]: 10/204 cut-off events. [2023-11-21 22:28:30,852 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:28:30,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 204 events. 10/204 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 266 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 101. Up to 4 conditions per place. [2023-11-21 22:28:30,862 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 239 transitions, 491 flow [2023-11-21 22:28:30,872 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 171 transitions, 349 flow [2023-11-21 22:28:30,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:28:30,901 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;@1e5af6a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:28:30,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-21 22:28:30,918 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:28:30,919 INFO L124 PetriNetUnfolderBase]: 0/21 cut-off events. [2023-11-21 22:28:30,919 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:28:30,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:30,920 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] [2023-11-21 22:28:30,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-21 22:28:30,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:30,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1697247302, now seen corresponding path program 1 times [2023-11-21 22:28:30,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:30,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453003556] [2023-11-21 22:28:30,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:30,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:31,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:28:31,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:31,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453003556] [2023-11-21 22:28:31,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453003556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:31,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:31,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:28:31,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322222808] [2023-11-21 22:28:31,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:31,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:28:31,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:31,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:28:31,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:28:31,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 239 [2023-11-21 22:28:31,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 171 transitions, 349 flow. Second operand has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 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) [2023-11-21 22:28:31,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:31,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 239 [2023-11-21 22:28:31,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:28:31,471 INFO L124 PetriNetUnfolderBase]: 5/193 cut-off events. [2023-11-21 22:28:31,471 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-21 22:28:31,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 193 events. 5/193 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 231 event pairs, 0 based on Foata normal form. 6/175 useless extension candidates. Maximal degree in co-relation 101. Up to 12 conditions per place. [2023-11-21 22:28:31,475 INFO L140 encePairwiseOnDemand]: 232/239 looper letters, 11 selfloop transitions, 2 changer transitions 1/166 dead transitions. [2023-11-21 22:28:31,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 166 transitions, 365 flow [2023-11-21 22:28:31,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:28:31,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:28:31,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2023-11-21 22:28:31,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9246861924686193 [2023-11-21 22:28:31,495 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2023-11-21 22:28:31,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2023-11-21 22:28:31,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:28:31,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2023-11-21 22:28:31,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 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) [2023-11-21 22:28:31,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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) [2023-11-21 22:28:31,519 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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) [2023-11-21 22:28:31,520 INFO L175 Difference]: Start difference. First operand has 165 places, 171 transitions, 349 flow. Second operand 3 states and 663 transitions. [2023-11-21 22:28:31,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 166 transitions, 365 flow [2023-11-21 22:28:31,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 166 transitions, 365 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:28:31,532 INFO L231 Difference]: Finished difference. Result has 166 places, 165 transitions, 341 flow [2023-11-21 22:28:31,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=166, PETRI_TRANSITIONS=165} [2023-11-21 22:28:31,538 INFO L281 CegarLoopForPetriNet]: 165 programPoint places, 1 predicate places. [2023-11-21 22:28:31,538 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 165 transitions, 341 flow [2023-11-21 22:28:31,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 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) [2023-11-21 22:28:31,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:31,540 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] [2023-11-21 22:28:31,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:28:31,540 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-21 22:28:31,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:31,541 INFO L85 PathProgramCache]: Analyzing trace with hash -481627170, now seen corresponding path program 1 times [2023-11-21 22:28:31,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:31,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484186786] [2023-11-21 22:28:31,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:31,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:31,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:28:31,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:31,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484186786] [2023-11-21 22:28:31,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484186786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:31,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:31,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:28:31,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210434827] [2023-11-21 22:28:31,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:31,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:28:31,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:31,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:28:31,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:28:31,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 239 [2023-11-21 22:28:31,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 165 transitions, 341 flow. Second operand has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 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) [2023-11-21 22:28:31,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:31,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 239 [2023-11-21 22:28:31,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:28:31,698 INFO L124 PetriNetUnfolderBase]: 5/188 cut-off events. [2023-11-21 22:28:31,699 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-21 22:28:31,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 188 events. 5/188 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 227 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 179. Up to 12 conditions per place. [2023-11-21 22:28:31,701 INFO L140 encePairwiseOnDemand]: 234/239 looper letters, 12 selfloop transitions, 1 changer transitions 0/161 dead transitions. [2023-11-21 22:28:31,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 161 transitions, 359 flow [2023-11-21 22:28:31,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:28:31,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:28:31,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 650 transitions. [2023-11-21 22:28:31,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9065550906555091 [2023-11-21 22:28:31,705 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 650 transitions. [2023-11-21 22:28:31,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 650 transitions. [2023-11-21 22:28:31,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:28:31,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 650 transitions. [2023-11-21 22:28:31,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 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) [2023-11-21 22:28:31,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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) [2023-11-21 22:28:31,714 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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) [2023-11-21 22:28:31,714 INFO L175 Difference]: Start difference. First operand has 166 places, 165 transitions, 341 flow. Second operand 3 states and 650 transitions. [2023-11-21 22:28:31,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 161 transitions, 359 flow [2023-11-21 22:28:31,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 161 transitions, 355 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:28:31,721 INFO L231 Difference]: Finished difference. Result has 161 places, 161 transitions, 331 flow [2023-11-21 22:28:31,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=331, PETRI_PLACES=161, PETRI_TRANSITIONS=161} [2023-11-21 22:28:31,722 INFO L281 CegarLoopForPetriNet]: 165 programPoint places, -4 predicate places. [2023-11-21 22:28:31,723 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 161 transitions, 331 flow [2023-11-21 22:28:31,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 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) [2023-11-21 22:28:31,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:31,724 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:31,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:28:31,724 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-21 22:28:31,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:31,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1521003898, now seen corresponding path program 1 times [2023-11-21 22:28:31,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:31,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973580396] [2023-11-21 22:28:31,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:31,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:28:32,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:32,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973580396] [2023-11-21 22:28:32,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973580396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:32,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:32,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:28:32,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074318138] [2023-11-21 22:28:32,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:32,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:28:32,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:32,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:28:32,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:28:32,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 239 [2023-11-21 22:28:32,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 161 transitions, 331 flow. Second operand has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 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) [2023-11-21 22:28:32,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:32,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 239 [2023-11-21 22:28:32,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:28:33,051 INFO L124 PetriNetUnfolderBase]: 229/1209 cut-off events. [2023-11-21 22:28:33,051 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-21 22:28:33,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1580 conditions, 1209 events. 229/1209 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 7687 event pairs, 154 based on Foata normal form. 0/1083 useless extension candidates. Maximal degree in co-relation 1548. Up to 359 conditions per place. [2023-11-21 22:28:33,064 INFO L140 encePairwiseOnDemand]: 233/239 looper letters, 36 selfloop transitions, 5 changer transitions 0/160 dead transitions. [2023-11-21 22:28:33,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 160 transitions, 411 flow [2023-11-21 22:28:33,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:28:33,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:28:33,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1116 transitions. [2023-11-21 22:28:33,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7782426778242678 [2023-11-21 22:28:33,071 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1116 transitions. [2023-11-21 22:28:33,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1116 transitions. [2023-11-21 22:28:33,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:28:33,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1116 transitions. [2023-11-21 22:28:33,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 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) [2023-11-21 22:28:33,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 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) [2023-11-21 22:28:33,084 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 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) [2023-11-21 22:28:33,084 INFO L175 Difference]: Start difference. First operand has 161 places, 161 transitions, 331 flow. Second operand 6 states and 1116 transitions. [2023-11-21 22:28:33,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 160 transitions, 411 flow [2023-11-21 22:28:33,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 160 transitions, 410 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:28:33,091 INFO L231 Difference]: Finished difference. Result has 164 places, 160 transitions, 338 flow [2023-11-21 22:28:33,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=338, PETRI_PLACES=164, PETRI_TRANSITIONS=160} [2023-11-21 22:28:33,093 INFO L281 CegarLoopForPetriNet]: 165 programPoint places, -1 predicate places. [2023-11-21 22:28:33,093 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 160 transitions, 338 flow [2023-11-21 22:28:33,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 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) [2023-11-21 22:28:33,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:33,095 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:33,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:28:33,096 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-21 22:28:33,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:33,098 INFO L85 PathProgramCache]: Analyzing trace with hash 296842153, now seen corresponding path program 1 times [2023-11-21 22:28:33,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:33,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404747137] [2023-11-21 22:28:33,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:33,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:33,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:28:33,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:33,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404747137] [2023-11-21 22:28:33,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404747137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:33,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:33,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:28:33,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829364498] [2023-11-21 22:28:33,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:33,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:28:33,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:33,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:28:33,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:28:34,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 239 [2023-11-21 22:28:34,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 160 transitions, 338 flow. Second operand has 6 states, 6 states have (on average 192.83333333333334) internal successors, (1157), 6 states have internal predecessors, (1157), 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) [2023-11-21 22:28:34,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:34,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 239 [2023-11-21 22:28:34,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:28:34,258 INFO L124 PetriNetUnfolderBase]: 85/512 cut-off events. [2023-11-21 22:28:34,258 INFO L125 PetriNetUnfolderBase]: For 5/9 co-relation queries the response was YES. [2023-11-21 22:28:34,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 705 conditions, 512 events. 85/512 cut-off events. For 5/9 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2237 event pairs, 70 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 674. Up to 168 conditions per place. [2023-11-21 22:28:34,265 INFO L140 encePairwiseOnDemand]: 227/239 looper letters, 30 selfloop transitions, 8 changer transitions 0/164 dead transitions. [2023-11-21 22:28:34,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 164 transitions, 422 flow [2023-11-21 22:28:34,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:28:34,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:28:34,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1188 transitions. [2023-11-21 22:28:34,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8284518828451883 [2023-11-21 22:28:34,271 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1188 transitions. [2023-11-21 22:28:34,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1188 transitions. [2023-11-21 22:28:34,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:28:34,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1188 transitions. [2023-11-21 22:28:34,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-11-21 22:28:34,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 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) [2023-11-21 22:28:34,283 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 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) [2023-11-21 22:28:34,283 INFO L175 Difference]: Start difference. First operand has 164 places, 160 transitions, 338 flow. Second operand 6 states and 1188 transitions. [2023-11-21 22:28:34,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 164 transitions, 422 flow [2023-11-21 22:28:34,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 164 transitions, 412 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-21 22:28:34,289 INFO L231 Difference]: Finished difference. Result has 164 places, 164 transitions, 382 flow [2023-11-21 22:28:34,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=382, PETRI_PLACES=164, PETRI_TRANSITIONS=164} [2023-11-21 22:28:34,292 INFO L281 CegarLoopForPetriNet]: 165 programPoint places, -1 predicate places. [2023-11-21 22:28:34,292 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 164 transitions, 382 flow [2023-11-21 22:28:34,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.83333333333334) internal successors, (1157), 6 states have internal predecessors, (1157), 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) [2023-11-21 22:28:34,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:34,294 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, 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] [2023-11-21 22:28:34,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:28:34,294 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-21 22:28:34,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:34,295 INFO L85 PathProgramCache]: Analyzing trace with hash 2128443167, now seen corresponding path program 1 times [2023-11-21 22:28:34,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:34,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599411436] [2023-11-21 22:28:34,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:34,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:34,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:28:34,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:34,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599411436] [2023-11-21 22:28:34,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599411436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:34,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:34,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:28:34,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067832780] [2023-11-21 22:28:34,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:34,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:28:34,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:34,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:28:34,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:28:35,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 239 [2023-11-21 22:28:35,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 164 transitions, 382 flow. Second operand has 6 states, 6 states have (on average 214.83333333333334) internal successors, (1289), 6 states have internal predecessors, (1289), 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) [2023-11-21 22:28:35,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:35,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 239 [2023-11-21 22:28:35,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:28:35,553 INFO L124 PetriNetUnfolderBase]: 22/262 cut-off events. [2023-11-21 22:28:35,553 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-21 22:28:35,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 262 events. 22/262 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 656 event pairs, 2 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 309. Up to 16 conditions per place. [2023-11-21 22:28:35,561 INFO L140 encePairwiseOnDemand]: 233/239 looper letters, 19 selfloop transitions, 5 changer transitions 4/171 dead transitions. [2023-11-21 22:28:35,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 171 transitions, 444 flow [2023-11-21 22:28:35,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:28:35,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:28:35,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1303 transitions. [2023-11-21 22:28:35,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9086471408647141 [2023-11-21 22:28:35,568 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1303 transitions. [2023-11-21 22:28:35,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1303 transitions. [2023-11-21 22:28:35,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:28:35,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1303 transitions. [2023-11-21 22:28:35,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 217.16666666666666) internal successors, (1303), 6 states have internal predecessors, (1303), 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) [2023-11-21 22:28:35,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 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) [2023-11-21 22:28:35,580 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 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) [2023-11-21 22:28:35,580 INFO L175 Difference]: Start difference. First operand has 164 places, 164 transitions, 382 flow. Second operand 6 states and 1303 transitions. [2023-11-21 22:28:35,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 171 transitions, 444 flow [2023-11-21 22:28:35,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 171 transitions, 444 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:28:35,586 INFO L231 Difference]: Finished difference. Result has 168 places, 159 transitions, 367 flow [2023-11-21 22:28:35,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=367, PETRI_PLACES=168, PETRI_TRANSITIONS=159} [2023-11-21 22:28:35,590 INFO L281 CegarLoopForPetriNet]: 165 programPoint places, 3 predicate places. [2023-11-21 22:28:35,590 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 159 transitions, 367 flow [2023-11-21 22:28:35,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 214.83333333333334) internal successors, (1289), 6 states have internal predecessors, (1289), 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) [2023-11-21 22:28:35,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:35,592 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, 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, 1, 1, 1, 1] [2023-11-21 22:28:35,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:28:35,593 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-21 22:28:35,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:35,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1938478496, now seen corresponding path program 1 times [2023-11-21 22:28:35,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:35,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778988542] [2023-11-21 22:28:35,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:35,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:35,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:28:35,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:35,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778988542] [2023-11-21 22:28:35,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778988542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:35,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:35,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:28:35,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188833072] [2023-11-21 22:28:35,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:35,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:28:35,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:35,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:28:35,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:28:35,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 239 [2023-11-21 22:28:35,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 159 transitions, 367 flow. Second operand has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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) [2023-11-21 22:28:35,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:35,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 239 [2023-11-21 22:28:35,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:28:35,727 INFO L124 PetriNetUnfolderBase]: 5/167 cut-off events. [2023-11-21 22:28:35,727 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-21 22:28:35,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 167 events. 5/167 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 159 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2023-11-21 22:28:35,730 INFO L140 encePairwiseOnDemand]: 236/239 looper letters, 7 selfloop transitions, 2 changer transitions 0/158 dead transitions. [2023-11-21 22:28:35,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 158 transitions, 383 flow [2023-11-21 22:28:35,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:28:35,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:28:35,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 673 transitions. [2023-11-21 22:28:35,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9386331938633193 [2023-11-21 22:28:35,734 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 673 transitions. [2023-11-21 22:28:35,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 673 transitions. [2023-11-21 22:28:35,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:28:35,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 673 transitions. [2023-11-21 22:28:35,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 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) [2023-11-21 22:28:35,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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) [2023-11-21 22:28:35,741 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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) [2023-11-21 22:28:35,741 INFO L175 Difference]: Start difference. First operand has 168 places, 159 transitions, 367 flow. Second operand 3 states and 673 transitions. [2023-11-21 22:28:35,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 158 transitions, 383 flow [2023-11-21 22:28:35,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 158 transitions, 367 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-21 22:28:35,747 INFO L231 Difference]: Finished difference. Result has 164 places, 158 transitions, 353 flow [2023-11-21 22:28:35,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=353, PETRI_PLACES=164, PETRI_TRANSITIONS=158} [2023-11-21 22:28:35,749 INFO L281 CegarLoopForPetriNet]: 165 programPoint places, -1 predicate places. [2023-11-21 22:28:35,749 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 158 transitions, 353 flow [2023-11-21 22:28:35,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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) [2023-11-21 22:28:35,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:35,750 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:35,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:28:35,750 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-21 22:28:35,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:35,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1149405514, now seen corresponding path program 1 times [2023-11-21 22:28:35,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:35,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996470105] [2023-11-21 22:28:35,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:35,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:35,800 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:28:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:35,885 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:28:35,886 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:28:35,887 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-21 22:28:35,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-11-21 22:28:35,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-11-21 22:28:35,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2023-11-21 22:28:35,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2023-11-21 22:28:35,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2023-11-21 22:28:35,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-11-21 22:28:35,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-11-21 22:28:35,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-11-21 22:28:35,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-11-21 22:28:35,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2023-11-21 22:28:35,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2023-11-21 22:28:35,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2023-11-21 22:28:35,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2023-11-21 22:28:35,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2023-11-21 22:28:35,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-11-21 22:28:35,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2023-11-21 22:28:35,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-11-21 22:28:35,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-11-21 22:28:35,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:28:35,903 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:35,916 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:28:35,916 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-21 22:28:36,036 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-21 22:28:36,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 317 transitions, 668 flow [2023-11-21 22:28:36,222 INFO L124 PetriNetUnfolderBase]: 46/655 cut-off events. [2023-11-21 22:28:36,222 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-21 22:28:36,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 655 events. 46/655 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2182 event pairs, 0 based on Foata normal form. 0/555 useless extension candidates. Maximal degree in co-relation 372. Up to 12 conditions per place. [2023-11-21 22:28:36,233 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 317 transitions, 668 flow [2023-11-21 22:28:36,244 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 257 transitions, 536 flow [2023-11-21 22:28:36,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:28:36,249 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;@1e5af6a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:28:36,249 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-21 22:28:36,252 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:28:36,252 INFO L124 PetriNetUnfolderBase]: 0/21 cut-off events. [2023-11-21 22:28:36,252 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:28:36,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:36,253 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] [2023-11-21 22:28:36,254 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:28:36,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:36,257 INFO L85 PathProgramCache]: Analyzing trace with hash 274639974, now seen corresponding path program 1 times [2023-11-21 22:28:36,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:36,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89174000] [2023-11-21 22:28:36,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:36,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:28:36,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:36,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89174000] [2023-11-21 22:28:36,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89174000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:36,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:36,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:28:36,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438206567] [2023-11-21 22:28:36,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:36,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:28:36,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:36,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:28:36,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:28:36,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 317 [2023-11-21 22:28:36,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 257 transitions, 536 flow. Second operand has 3 states, 3 states have (on average 283.3333333333333) internal successors, (850), 3 states have internal predecessors, (850), 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) [2023-11-21 22:28:36,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:36,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 317 [2023-11-21 22:28:36,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:28:36,608 INFO L124 PetriNetUnfolderBase]: 93/1106 cut-off events. [2023-11-21 22:28:36,609 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-11-21 22:28:36,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1248 conditions, 1106 events. 93/1106 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5318 event pairs, 24 based on Foata normal form. 50/995 useless extension candidates. Maximal degree in co-relation 686. Up to 97 conditions per place. [2023-11-21 22:28:36,623 INFO L140 encePairwiseOnDemand]: 308/317 looper letters, 19 selfloop transitions, 2 changer transitions 1/250 dead transitions. [2023-11-21 22:28:36,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 250 transitions, 564 flow [2023-11-21 22:28:36,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:28:36,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:28:36,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 874 transitions. [2023-11-21 22:28:36,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9190325972660357 [2023-11-21 22:28:36,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 874 transitions. [2023-11-21 22:28:36,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 874 transitions. [2023-11-21 22:28:36,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:28:36,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 874 transitions. [2023-11-21 22:28:36,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 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) [2023-11-21 22:28:36,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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) [2023-11-21 22:28:36,636 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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) [2023-11-21 22:28:36,636 INFO L175 Difference]: Start difference. First operand has 243 places, 257 transitions, 536 flow. Second operand 3 states and 874 transitions. [2023-11-21 22:28:36,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 250 transitions, 564 flow [2023-11-21 22:28:36,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 250 transitions, 564 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:28:36,691 INFO L231 Difference]: Finished difference. Result has 244 places, 249 transitions, 524 flow [2023-11-21 22:28:36,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=524, PETRI_PLACES=244, PETRI_TRANSITIONS=249} [2023-11-21 22:28:36,693 INFO L281 CegarLoopForPetriNet]: 243 programPoint places, 1 predicate places. [2023-11-21 22:28:36,693 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 249 transitions, 524 flow [2023-11-21 22:28:36,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 283.3333333333333) internal successors, (850), 3 states have internal predecessors, (850), 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) [2023-11-21 22:28:36,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:36,694 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] [2023-11-21 22:28:36,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:28:36,694 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:28:36,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:36,694 INFO L85 PathProgramCache]: Analyzing trace with hash 805193918, now seen corresponding path program 1 times [2023-11-21 22:28:36,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:36,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877689175] [2023-11-21 22:28:36,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:36,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:36,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:28:36,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:36,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877689175] [2023-11-21 22:28:36,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877689175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:36,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:36,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:28:36,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808868940] [2023-11-21 22:28:36,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:36,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:28:36,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:36,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:28:36,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:28:36,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 317 [2023-11-21 22:28:36,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 249 transitions, 524 flow. Second operand has 3 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) [2023-11-21 22:28:36,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:36,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 317 [2023-11-21 22:28:36,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:28:36,998 INFO L124 PetriNetUnfolderBase]: 99/1140 cut-off events. [2023-11-21 22:28:36,998 INFO L125 PetriNetUnfolderBase]: For 105/106 co-relation queries the response was YES. [2023-11-21 22:28:37,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1312 conditions, 1140 events. 99/1140 cut-off events. For 105/106 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 5707 event pairs, 28 based on Foata normal form. 0/987 useless extension candidates. Maximal degree in co-relation 1280. Up to 111 conditions per place. [2023-11-21 22:28:37,014 INFO L140 encePairwiseOnDemand]: 311/317 looper letters, 20 selfloop transitions, 1 changer transitions 0/244 dead transitions. [2023-11-21 22:28:37,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 244 transitions, 556 flow [2023-11-21 22:28:37,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:28:37,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:28:37,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 854 transitions. [2023-11-21 22:28:37,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8980021030494216 [2023-11-21 22:28:37,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 854 transitions. [2023-11-21 22:28:37,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 854 transitions. [2023-11-21 22:28:37,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:28:37,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 854 transitions. [2023-11-21 22:28:37,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 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) [2023-11-21 22:28:37,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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) [2023-11-21 22:28:37,027 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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) [2023-11-21 22:28:37,027 INFO L175 Difference]: Start difference. First operand has 244 places, 249 transitions, 524 flow. Second operand 3 states and 854 transitions. [2023-11-21 22:28:37,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 244 transitions, 556 flow [2023-11-21 22:28:37,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 244 transitions, 552 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:28:37,035 INFO L231 Difference]: Finished difference. Result has 238 places, 244 transitions, 512 flow [2023-11-21 22:28:37,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=512, PETRI_PLACES=238, PETRI_TRANSITIONS=244} [2023-11-21 22:28:37,037 INFO L281 CegarLoopForPetriNet]: 243 programPoint places, -5 predicate places. [2023-11-21 22:28:37,037 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 244 transitions, 512 flow [2023-11-21 22:28:37,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-21 22:28:37,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:37,038 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:37,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:28:37,039 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:28:37,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:37,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1763527270, now seen corresponding path program 1 times [2023-11-21 22:28:37,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:37,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417298502] [2023-11-21 22:28:37,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:37,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:37,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:28:37,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:37,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417298502] [2023-11-21 22:28:37,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417298502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:37,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:37,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:28:37,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693633954] [2023-11-21 22:28:37,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:37,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:28:37,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:37,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:28:37,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:28:37,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 317 [2023-11-21 22:28:37,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 244 transitions, 512 flow. Second operand has 6 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 states have internal predecessors, (1436), 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) [2023-11-21 22:28:37,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:37,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 317 [2023-11-21 22:28:37,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:28:41,835 INFO L124 PetriNetUnfolderBase]: 5522/15901 cut-off events. [2023-11-21 22:28:41,835 INFO L125 PetriNetUnfolderBase]: For 305/305 co-relation queries the response was YES. [2023-11-21 22:28:41,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23952 conditions, 15901 events. 5522/15901 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 146984 event pairs, 4598 based on Foata normal form. 0/14279 useless extension candidates. Maximal degree in co-relation 23919. Up to 7895 conditions per place. [2023-11-21 22:28:42,147 INFO L140 encePairwiseOnDemand]: 311/317 looper letters, 52 selfloop transitions, 5 changer transitions 0/243 dead transitions. [2023-11-21 22:28:42,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 243 transitions, 624 flow [2023-11-21 22:28:42,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:28:42,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:28:42,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1486 transitions. [2023-11-21 22:28:42,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7812828601472135 [2023-11-21 22:28:42,155 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1486 transitions. [2023-11-21 22:28:42,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1486 transitions. [2023-11-21 22:28:42,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:28:42,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1486 transitions. [2023-11-21 22:28:42,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 247.66666666666666) internal successors, (1486), 6 states have internal predecessors, (1486), 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) [2023-11-21 22:28:42,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 317.0) internal successors, (2219), 7 states have internal predecessors, (2219), 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) [2023-11-21 22:28:42,171 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 317.0) internal successors, (2219), 7 states have internal predecessors, (2219), 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) [2023-11-21 22:28:42,172 INFO L175 Difference]: Start difference. First operand has 238 places, 244 transitions, 512 flow. Second operand 6 states and 1486 transitions. [2023-11-21 22:28:42,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 243 transitions, 624 flow [2023-11-21 22:28:42,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 243 transitions, 623 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:28:42,181 INFO L231 Difference]: Finished difference. Result has 241 places, 243 transitions, 519 flow [2023-11-21 22:28:42,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=519, PETRI_PLACES=241, PETRI_TRANSITIONS=243} [2023-11-21 22:28:42,184 INFO L281 CegarLoopForPetriNet]: 243 programPoint places, -2 predicate places. [2023-11-21 22:28:42,184 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 243 transitions, 519 flow [2023-11-21 22:28:42,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 states have internal predecessors, (1436), 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) [2023-11-21 22:28:42,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:42,186 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:42,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:28:42,186 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:28:42,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:42,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1045083788, now seen corresponding path program 1 times [2023-11-21 22:28:42,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:42,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055161374] [2023-11-21 22:28:42,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:42,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:42,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:28:42,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:42,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055161374] [2023-11-21 22:28:42,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055161374] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:42,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:42,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:28:42,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799409012] [2023-11-21 22:28:42,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:42,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:28:42,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:42,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:28:42,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:28:43,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 317 [2023-11-21 22:28:43,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 243 transitions, 519 flow. Second operand has 6 states, 6 states have (on average 254.83333333333334) internal successors, (1529), 6 states have internal predecessors, (1529), 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) [2023-11-21 22:28:43,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:43,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 317 [2023-11-21 22:28:43,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:28:45,384 INFO L124 PetriNetUnfolderBase]: 2194/8431 cut-off events. [2023-11-21 22:28:45,384 INFO L125 PetriNetUnfolderBase]: For 292/300 co-relation queries the response was YES. [2023-11-21 22:28:45,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11520 conditions, 8431 events. 2194/8431 cut-off events. For 292/300 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 76487 event pairs, 1540 based on Foata normal form. 0/7425 useless extension candidates. Maximal degree in co-relation 11488. Up to 2944 conditions per place. [2023-11-21 22:28:45,478 INFO L140 encePairwiseOnDemand]: 304/317 looper letters, 41 selfloop transitions, 8 changer transitions 0/246 dead transitions. [2023-11-21 22:28:45,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 246 transitions, 623 flow [2023-11-21 22:28:45,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:28:45,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:28:45,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1572 transitions. [2023-11-21 22:28:45,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8264984227129337 [2023-11-21 22:28:45,488 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1572 transitions. [2023-11-21 22:28:45,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1572 transitions. [2023-11-21 22:28:45,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:28:45,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1572 transitions. [2023-11-21 22:28:45,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 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) [2023-11-21 22:28:45,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 317.0) internal successors, (2219), 7 states have internal predecessors, (2219), 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) [2023-11-21 22:28:45,506 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 317.0) internal successors, (2219), 7 states have internal predecessors, (2219), 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) [2023-11-21 22:28:45,507 INFO L175 Difference]: Start difference. First operand has 241 places, 243 transitions, 519 flow. Second operand 6 states and 1572 transitions. [2023-11-21 22:28:45,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 246 transitions, 623 flow [2023-11-21 22:28:45,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 246 transitions, 613 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-21 22:28:45,518 INFO L231 Difference]: Finished difference. Result has 240 places, 246 transitions, 561 flow [2023-11-21 22:28:45,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=561, PETRI_PLACES=240, PETRI_TRANSITIONS=246} [2023-11-21 22:28:45,521 INFO L281 CegarLoopForPetriNet]: 243 programPoint places, -3 predicate places. [2023-11-21 22:28:45,521 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 246 transitions, 561 flow [2023-11-21 22:28:45,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.83333333333334) internal successors, (1529), 6 states have internal predecessors, (1529), 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) [2023-11-21 22:28:45,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:45,523 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, 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] [2023-11-21 22:28:45,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 22:28:45,523 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:28:45,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:45,524 INFO L85 PathProgramCache]: Analyzing trace with hash 550919394, now seen corresponding path program 1 times [2023-11-21 22:28:45,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:45,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949232841] [2023-11-21 22:28:45,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:45,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:46,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:28:46,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:46,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949232841] [2023-11-21 22:28:46,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949232841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:46,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:46,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:28:46,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689219638] [2023-11-21 22:28:46,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:46,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:28:46,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:46,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:28:46,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:28:46,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 317 [2023-11-21 22:28:46,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 246 transitions, 561 flow. Second operand has 6 states, 6 states have (on average 282.8333333333333) internal successors, (1697), 6 states have internal predecessors, (1697), 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) [2023-11-21 22:28:46,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:46,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 317 [2023-11-21 22:28:46,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:28:47,232 INFO L124 PetriNetUnfolderBase]: 254/1717 cut-off events. [2023-11-21 22:28:47,233 INFO L125 PetriNetUnfolderBase]: For 139/161 co-relation queries the response was YES. [2023-11-21 22:28:47,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2167 conditions, 1717 events. 254/1717 cut-off events. For 139/161 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 10620 event pairs, 34 based on Foata normal form. 5/1541 useless extension candidates. Maximal degree in co-relation 2132. Up to 104 conditions per place. [2023-11-21 22:28:47,248 INFO L140 encePairwiseOnDemand]: 311/317 looper letters, 42 selfloop transitions, 5 changer transitions 4/269 dead transitions. [2023-11-21 22:28:47,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 269 transitions, 725 flow [2023-11-21 22:28:47,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:28:47,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:28:47,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1734 transitions. [2023-11-21 22:28:47,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9116719242902208 [2023-11-21 22:28:47,255 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1734 transitions. [2023-11-21 22:28:47,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1734 transitions. [2023-11-21 22:28:47,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:28:47,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1734 transitions. [2023-11-21 22:28:47,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 289.0) internal successors, (1734), 6 states have internal predecessors, (1734), 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) [2023-11-21 22:28:47,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 317.0) internal successors, (2219), 7 states have internal predecessors, (2219), 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) [2023-11-21 22:28:47,269 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 317.0) internal successors, (2219), 7 states have internal predecessors, (2219), 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) [2023-11-21 22:28:47,269 INFO L175 Difference]: Start difference. First operand has 240 places, 246 transitions, 561 flow. Second operand 6 states and 1734 transitions. [2023-11-21 22:28:47,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 269 transitions, 725 flow [2023-11-21 22:28:47,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 269 transitions, 725 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:28:47,277 INFO L231 Difference]: Finished difference. Result has 244 places, 241 transitions, 546 flow [2023-11-21 22:28:47,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=546, PETRI_PLACES=244, PETRI_TRANSITIONS=241} [2023-11-21 22:28:47,278 INFO L281 CegarLoopForPetriNet]: 243 programPoint places, 1 predicate places. [2023-11-21 22:28:47,279 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 241 transitions, 546 flow [2023-11-21 22:28:47,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.8333333333333) internal successors, (1697), 6 states have internal predecessors, (1697), 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) [2023-11-21 22:28:47,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:47,280 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, 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, 1, 1, 1, 1] [2023-11-21 22:28:47,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 22:28:47,281 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:28:47,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:47,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1812113367, now seen corresponding path program 1 times [2023-11-21 22:28:47,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:47,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587384538] [2023-11-21 22:28:47,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:47,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:47,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:28:47,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:47,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587384538] [2023-11-21 22:28:47,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587384538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:47,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:47,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:28:47,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887794285] [2023-11-21 22:28:47,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:47,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:28:47,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:47,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:28:47,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:28:47,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 317 [2023-11-21 22:28:47,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 241 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:47,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:47,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 317 [2023-11-21 22:28:47,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:28:47,589 INFO L124 PetriNetUnfolderBase]: 127/1211 cut-off events. [2023-11-21 22:28:47,589 INFO L125 PetriNetUnfolderBase]: For 120/126 co-relation queries the response was YES. [2023-11-21 22:28:47,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1493 conditions, 1211 events. 127/1211 cut-off events. For 120/126 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 6461 event pairs, 32 based on Foata normal form. 1/1077 useless extension candidates. Maximal degree in co-relation 1458. Up to 120 conditions per place. [2023-11-21 22:28:47,601 INFO L140 encePairwiseOnDemand]: 311/317 looper letters, 20 selfloop transitions, 5 changer transitions 0/249 dead transitions. [2023-11-21 22:28:47,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 249 transitions, 620 flow [2023-11-21 22:28:47,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:28:47,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:28:47,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 890 transitions. [2023-11-21 22:28:47,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.935856992639327 [2023-11-21 22:28:47,606 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 890 transitions. [2023-11-21 22:28:47,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 890 transitions. [2023-11-21 22:28:47,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:28:47,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 890 transitions. [2023-11-21 22:28:47,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 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) [2023-11-21 22:28:47,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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) [2023-11-21 22:28:47,613 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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) [2023-11-21 22:28:47,614 INFO L175 Difference]: Start difference. First operand has 244 places, 241 transitions, 546 flow. Second operand 3 states and 890 transitions. [2023-11-21 22:28:47,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 249 transitions, 620 flow [2023-11-21 22:28:47,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 249 transitions, 604 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-21 22:28:47,622 INFO L231 Difference]: Finished difference. Result has 243 places, 245 transitions, 568 flow [2023-11-21 22:28:47,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=568, PETRI_PLACES=243, PETRI_TRANSITIONS=245} [2023-11-21 22:28:47,623 INFO L281 CegarLoopForPetriNet]: 243 programPoint places, 0 predicate places. [2023-11-21 22:28:47,623 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 245 transitions, 568 flow [2023-11-21 22:28:47,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:47,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:47,625 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:47,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-21 22:28:47,625 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:28:47,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:47,626 INFO L85 PathProgramCache]: Analyzing trace with hash 878067232, now seen corresponding path program 1 times [2023-11-21 22:28:47,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:47,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993618527] [2023-11-21 22:28:47,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:47,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-21 22:28:47,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:47,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993618527] [2023-11-21 22:28:47,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993618527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:47,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:47,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:28:47,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714695831] [2023-11-21 22:28:47,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:47,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:28:47,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:47,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:28:47,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:28:47,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 317 [2023-11-21 22:28:47,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 245 transitions, 568 flow. Second operand has 3 states, 3 states have (on average 290.0) internal successors, (870), 3 states have internal predecessors, (870), 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) [2023-11-21 22:28:47,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:47,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 317 [2023-11-21 22:28:47,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:28:48,089 INFO L124 PetriNetUnfolderBase]: 155/1553 cut-off events. [2023-11-21 22:28:48,089 INFO L125 PetriNetUnfolderBase]: For 186/199 co-relation queries the response was YES. [2023-11-21 22:28:48,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1896 conditions, 1553 events. 155/1553 cut-off events. For 186/199 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 9506 event pairs, 31 based on Foata normal form. 1/1385 useless extension candidates. Maximal degree in co-relation 1860. Up to 132 conditions per place. [2023-11-21 22:28:48,107 INFO L140 encePairwiseOnDemand]: 311/317 looper letters, 20 selfloop transitions, 6 changer transitions 0/252 dead transitions. [2023-11-21 22:28:48,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 252 transitions, 643 flow [2023-11-21 22:28:48,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:28:48,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:28:48,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 889 transitions. [2023-11-21 22:28:48,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9348054679284963 [2023-11-21 22:28:48,113 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 889 transitions. [2023-11-21 22:28:48,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 889 transitions. [2023-11-21 22:28:48,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:28:48,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 889 transitions. [2023-11-21 22:28:48,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 296.3333333333333) internal successors, (889), 3 states have internal predecessors, (889), 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) [2023-11-21 22:28:48,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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) [2023-11-21 22:28:48,122 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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) [2023-11-21 22:28:48,122 INFO L175 Difference]: Start difference. First operand has 243 places, 245 transitions, 568 flow. Second operand 3 states and 889 transitions. [2023-11-21 22:28:48,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 252 transitions, 643 flow [2023-11-21 22:28:48,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 252 transitions, 631 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:28:48,131 INFO L231 Difference]: Finished difference. Result has 245 places, 249 transitions, 604 flow [2023-11-21 22:28:48,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=604, PETRI_PLACES=245, PETRI_TRANSITIONS=249} [2023-11-21 22:28:48,133 INFO L281 CegarLoopForPetriNet]: 243 programPoint places, 2 predicate places. [2023-11-21 22:28:48,133 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 249 transitions, 604 flow [2023-11-21 22:28:48,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.0) internal successors, (870), 3 states have internal predecessors, (870), 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) [2023-11-21 22:28:48,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:48,134 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-11-21 22:28:48,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-21 22:28:48,135 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-21 22:28:48,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:48,136 INFO L85 PathProgramCache]: Analyzing trace with hash -57399102, now seen corresponding path program 1 times [2023-11-21 22:28:48,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:48,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252194568] [2023-11-21 22:28:48,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:48,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:48,178 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:28:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:48,222 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:28:48,223 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:28:48,223 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2023-11-21 22:28:48,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2023-11-21 22:28:48,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2023-11-21 22:28:48,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2023-11-21 22:28:48,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2023-11-21 22:28:48,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2023-11-21 22:28:48,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2023-11-21 22:28:48,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2023-11-21 22:28:48,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2023-11-21 22:28:48,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2023-11-21 22:28:48,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2023-11-21 22:28:48,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2023-11-21 22:28:48,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2023-11-21 22:28:48,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2023-11-21 22:28:48,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2023-11-21 22:28:48,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2023-11-21 22:28:48,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2023-11-21 22:28:48,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2023-11-21 22:28:48,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2023-11-21 22:28:48,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2023-11-21 22:28:48,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2023-11-21 22:28:48,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2023-11-21 22:28:48,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2023-11-21 22:28:48,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-21 22:28:48,229 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:48,230 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:28:48,230 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-21 22:28:48,315 INFO L144 ThreadInstanceAdder]: Constructed 15 joinOtherThreadTransitions. [2023-11-21 22:28:48,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 361 places, 397 transitions, 857 flow [2023-11-21 22:28:48,883 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1241] threadEXIT-->L1034-13: Formula: (= v_threadThread1of3ForFork0_thidvar0_8 (let ((.cse0 (mod |v_threadThread3of3ForFork0_#t~mem12_8| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {threadThread1of3ForFork0_thidvar0=v_threadThread1of3ForFork0_thidvar0_8, threadThread3of3ForFork0_#t~mem12=|v_threadThread3of3ForFork0_#t~mem12_8|} OutVars{threadThread1of3ForFork0_thidvar0=v_threadThread1of3ForFork0_thidvar0_8, threadThread3of3ForFork0_#t~mem12=|v_threadThread3of3ForFork0_#t~mem12_8|} AuxVars[] AssignedVars[][134], [17#L1043-10true, threadThread1of3ForFork0NotInUse, threadThread2of3ForFork0NotInUse, 123#L1034-13true, threadThread3of3ForFork0InUse]) [2023-11-21 22:28:48,883 INFO L294 olderBase$Statistics]: this new event has 275 ancestors and is cut-off event [2023-11-21 22:28:48,883 INFO L297 olderBase$Statistics]: existing Event has 275 ancestors and is cut-off event [2023-11-21 22:28:48,884 INFO L297 olderBase$Statistics]: existing Event has 206 ancestors and is cut-off event [2023-11-21 22:28:48,884 INFO L297 olderBase$Statistics]: existing Event has 206 ancestors and is cut-off event [2023-11-21 22:28:48,905 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1241] threadEXIT-->L1034-13: Formula: (= v_threadThread1of3ForFork0_thidvar0_8 (let ((.cse0 (mod |v_threadThread3of3ForFork0_#t~mem12_8| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {threadThread1of3ForFork0_thidvar0=v_threadThread1of3ForFork0_thidvar0_8, threadThread3of3ForFork0_#t~mem12=|v_threadThread3of3ForFork0_#t~mem12_8|} OutVars{threadThread1of3ForFork0_thidvar0=v_threadThread1of3ForFork0_thidvar0_8, threadThread3of3ForFork0_#t~mem12=|v_threadThread3of3ForFork0_#t~mem12_8|} AuxVars[] AssignedVars[][134], [17#L1043-10true, 44#$Ultimate##0true, threadThread1of3ForFork0NotInUse, threadThread2of3ForFork0InUse, 123#L1034-13true, threadThread3of3ForFork0InUse]) [2023-11-21 22:28:48,906 INFO L294 olderBase$Statistics]: this new event has 292 ancestors and is cut-off event [2023-11-21 22:28:48,906 INFO L297 olderBase$Statistics]: existing Event has 223 ancestors and is cut-off event [2023-11-21 22:28:48,906 INFO L297 olderBase$Statistics]: existing Event has 154 ancestors and is cut-off event [2023-11-21 22:28:48,907 INFO L297 olderBase$Statistics]: existing Event has 223 ancestors and is cut-off event [2023-11-21 22:28:49,006 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1249] threadEXIT-->L1034-13: Formula: (= v_threadThread3of3ForFork0_thidvar0_12 (let ((.cse0 (mod |v_threadThread1of3ForFork0_#t~mem12_12| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {threadThread1of3ForFork0_#t~mem12=|v_threadThread1of3ForFork0_#t~mem12_12|, threadThread3of3ForFork0_thidvar0=v_threadThread3of3ForFork0_thidvar0_12} OutVars{threadThread1of3ForFork0_#t~mem12=|v_threadThread1of3ForFork0_#t~mem12_12|, threadThread3of3ForFork0_thidvar0=v_threadThread3of3ForFork0_thidvar0_12} AuxVars[] AssignedVars[][10], [17#L1043-10true, threadThread1of3ForFork0InUse, threadThread2of3ForFork0NotInUse, threadThread3of3ForFork0NotInUse, 93#L1034-13true]) [2023-11-21 22:28:49,007 INFO L294 olderBase$Statistics]: this new event has 275 ancestors and is cut-off event [2023-11-21 22:28:49,007 INFO L297 olderBase$Statistics]: existing Event has 206 ancestors and is cut-off event [2023-11-21 22:28:49,007 INFO L297 olderBase$Statistics]: existing Event has 275 ancestors and is cut-off event [2023-11-21 22:28:49,007 INFO L297 olderBase$Statistics]: existing Event has 206 ancestors and is cut-off event [2023-11-21 22:28:49,165 INFO L124 PetriNetUnfolderBase]: 211/2040 cut-off events. [2023-11-21 22:28:49,165 INFO L125 PetriNetUnfolderBase]: For 127/131 co-relation queries the response was YES. [2023-11-21 22:28:49,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2176 conditions, 2040 events. 211/2040 cut-off events. For 127/131 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 11167 event pairs, 3 based on Foata normal form. 3/1721 useless extension candidates. Maximal degree in co-relation 973. Up to 35 conditions per place. [2023-11-21 22:28:49,205 INFO L82 GeneralOperation]: Start removeDead. Operand has 361 places, 397 transitions, 857 flow [2023-11-21 22:28:49,242 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 311 places, 335 transitions, 715 flow [2023-11-21 22:28:49,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:28:49,245 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;@1e5af6a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:28:49,245 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-11-21 22:28:49,249 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:28:49,249 INFO L124 PetriNetUnfolderBase]: 0/21 cut-off events. [2023-11-21 22:28:49,249 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:28:49,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:49,250 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] [2023-11-21 22:28:49,250 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-21 22:28:49,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:49,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1449226970, now seen corresponding path program 1 times [2023-11-21 22:28:49,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:49,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901206979] [2023-11-21 22:28:49,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:49,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:49,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:28:49,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:49,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901206979] [2023-11-21 22:28:49,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901206979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:49,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:49,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:28:49,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458775144] [2023-11-21 22:28:49,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:49,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:28:49,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:49,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:28:49,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:28:49,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 397 [2023-11-21 22:28:49,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 335 transitions, 715 flow. Second operand has 3 states, 3 states have (on average 350.3333333333333) internal successors, (1051), 3 states have internal predecessors, (1051), 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) [2023-11-21 22:28:49,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:49,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 397 [2023-11-21 22:28:49,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:28:52,018 INFO L124 PetriNetUnfolderBase]: 1140/7845 cut-off events. [2023-11-21 22:28:52,018 INFO L125 PetriNetUnfolderBase]: For 1065/1065 co-relation queries the response was YES. [2023-11-21 22:28:52,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9400 conditions, 7845 events. 1140/7845 cut-off events. For 1065/1065 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 73711 event pairs, 375 based on Foata normal form. 479/7148 useless extension candidates. Maximal degree in co-relation 6435. Up to 1069 conditions per place. [2023-11-21 22:28:52,147 INFO L140 encePairwiseOnDemand]: 386/397 looper letters, 28 selfloop transitions, 2 changer transitions 1/326 dead transitions. [2023-11-21 22:28:52,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 326 transitions, 757 flow [2023-11-21 22:28:52,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:28:52,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:28:52,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1086 transitions. [2023-11-21 22:28:52,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9118387909319899 [2023-11-21 22:28:52,153 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1086 transitions. [2023-11-21 22:28:52,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1086 transitions. [2023-11-21 22:28:52,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:28:52,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1086 transitions. [2023-11-21 22:28:52,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 362.0) internal successors, (1086), 3 states have internal predecessors, (1086), 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) [2023-11-21 22:28:52,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 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) [2023-11-21 22:28:52,163 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 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) [2023-11-21 22:28:52,163 INFO L175 Difference]: Start difference. First operand has 311 places, 335 transitions, 715 flow. Second operand 3 states and 1086 transitions. [2023-11-21 22:28:52,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 326 transitions, 757 flow [2023-11-21 22:28:52,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 326 transitions, 757 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:28:52,174 INFO L231 Difference]: Finished difference. Result has 312 places, 325 transitions, 699 flow [2023-11-21 22:28:52,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=699, PETRI_PLACES=312, PETRI_TRANSITIONS=325} [2023-11-21 22:28:52,176 INFO L281 CegarLoopForPetriNet]: 311 programPoint places, 1 predicate places. [2023-11-21 22:28:52,177 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 325 transitions, 699 flow [2023-11-21 22:28:52,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 350.3333333333333) internal successors, (1051), 3 states have internal predecessors, (1051), 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) [2023-11-21 22:28:52,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:52,177 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] [2023-11-21 22:28:52,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-21 22:28:52,178 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-21 22:28:52,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:52,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1904119294, now seen corresponding path program 1 times [2023-11-21 22:28:52,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:52,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928209688] [2023-11-21 22:28:52,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:52,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:52,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:28:52,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:52,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928209688] [2023-11-21 22:28:52,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928209688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:52,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:52,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:28:52,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615095695] [2023-11-21 22:28:52,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:52,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:28:52,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:52,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:28:52,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:28:52,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 397 [2023-11-21 22:28:52,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 325 transitions, 699 flow. Second operand has 3 states, 3 states have (on average 342.0) internal successors, (1026), 3 states have internal predecessors, (1026), 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) [2023-11-21 22:28:52,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:52,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 397 [2023-11-21 22:28:52,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:28:54,293 INFO L124 PetriNetUnfolderBase]: 1387/9163 cut-off events. [2023-11-21 22:28:54,293 INFO L125 PetriNetUnfolderBase]: For 1737/1792 co-relation queries the response was YES. [2023-11-21 22:28:54,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11365 conditions, 9163 events. 1387/9163 cut-off events. For 1737/1792 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 89485 event pairs, 488 based on Foata normal form. 0/7857 useless extension candidates. Maximal degree in co-relation 11332. Up to 1431 conditions per place. [2023-11-21 22:28:54,452 INFO L140 encePairwiseOnDemand]: 390/397 looper letters, 30 selfloop transitions, 1 changer transitions 0/319 dead transitions. [2023-11-21 22:28:54,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 319 transitions, 749 flow [2023-11-21 22:28:54,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:28:54,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:28:54,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1060 transitions. [2023-11-21 22:28:54,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8900083963056256 [2023-11-21 22:28:54,458 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1060 transitions. [2023-11-21 22:28:54,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1060 transitions. [2023-11-21 22:28:54,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:28:54,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1060 transitions. [2023-11-21 22:28:54,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 353.3333333333333) internal successors, (1060), 3 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:54,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 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) [2023-11-21 22:28:54,468 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 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) [2023-11-21 22:28:54,468 INFO L175 Difference]: Start difference. First operand has 312 places, 325 transitions, 699 flow. Second operand 3 states and 1060 transitions. [2023-11-21 22:28:54,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 319 transitions, 749 flow [2023-11-21 22:28:54,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 319 transitions, 745 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:28:54,479 INFO L231 Difference]: Finished difference. Result has 305 places, 319 transitions, 685 flow [2023-11-21 22:28:54,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=685, PETRI_PLACES=305, PETRI_TRANSITIONS=319} [2023-11-21 22:28:54,481 INFO L281 CegarLoopForPetriNet]: 311 programPoint places, -6 predicate places. [2023-11-21 22:28:54,481 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 319 transitions, 685 flow [2023-11-21 22:28:54,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 342.0) internal successors, (1026), 3 states have internal predecessors, (1026), 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) [2023-11-21 22:28:54,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:54,482 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:54,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-21 22:28:54,483 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-21 22:28:54,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:54,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1860132442, now seen corresponding path program 1 times [2023-11-21 22:28:54,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:54,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808690988] [2023-11-21 22:28:54,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:54,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:54,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:28:54,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:54,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808690988] [2023-11-21 22:28:54,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808690988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:54,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:54,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:28:54,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352479349] [2023-11-21 22:28:54,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:54,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:28:54,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:54,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:28:54,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:28:55,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 397 [2023-11-21 22:28:55,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 319 transitions, 685 flow. Second operand has 6 states, 6 states have (on average 298.3333333333333) internal successors, (1790), 6 states have internal predecessors, (1790), 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) [2023-11-21 22:28:55,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:55,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 397 [2023-11-21 22:28:55,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand