./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-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_80d5394a-79c8-484c-b37d-40d59a6ee1cf/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d5394a-79c8-484c-b37d-40d59a6ee1cf/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_80d5394a-79c8-484c-b37d-40d59a6ee1cf/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d5394a-79c8-484c-b37d-40d59a6ee1cf/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-race.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d5394a-79c8-484c-b37d-40d59a6ee1cf/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_80d5394a-79c8-484c-b37d-40d59a6ee1cf/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 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 20:56:37,338 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 20:56:37,477 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d5394a-79c8-484c-b37d-40d59a6ee1cf/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-21 20:56:37,487 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 20:56:37,488 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 20:56:37,530 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 20:56:37,530 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 20:56:37,531 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 20:56:37,532 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 20:56:37,538 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 20:56:37,539 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 20:56:37,539 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 20:56:37,539 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 20:56:37,541 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 20:56:37,542 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 20:56:37,542 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 20:56:37,543 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 20:56:37,543 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 20:56:37,543 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 20:56:37,544 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 20:56:37,545 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 20:56:37,545 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 20:56:37,546 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-21 20:56:37,546 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 20:56:37,546 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 20:56:37,547 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 20:56:37,547 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 20:56:37,548 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 20:56:37,549 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 20:56:37,549 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 20:56:37,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:56:37,551 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 20:56:37,551 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 20:56:37,551 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 20:56:37,552 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 20:56:37,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 20:56:37,552 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 20:56:37,552 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 20:56:37,553 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 20:56:37,553 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 20:56:37,553 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 20:56:37,553 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_80d5394a-79c8-484c-b37d-40d59a6ee1cf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d5394a-79c8-484c-b37d-40d59a6ee1cf/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45 [2023-11-21 20:56:37,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 20:56:37,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 20:56:37,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 20:56:37,976 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 20:56:37,976 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 20:56:37,978 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d5394a-79c8-484c-b37d-40d59a6ee1cf/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-race.i [2023-11-21 20:56:41,181 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 20:56:41,618 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 20:56:41,619 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d5394a-79c8-484c-b37d-40d59a6ee1cf/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-race.i [2023-11-21 20:56:41,643 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d5394a-79c8-484c-b37d-40d59a6ee1cf/bin/uautomizer-verify-bycVGegfSx/data/39cd02312/8ad79b8902af4ae3a53e2e5f6c8bc8f1/FLAGf37616b40 [2023-11-21 20:56:41,663 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d5394a-79c8-484c-b37d-40d59a6ee1cf/bin/uautomizer-verify-bycVGegfSx/data/39cd02312/8ad79b8902af4ae3a53e2e5f6c8bc8f1 [2023-11-21 20:56:41,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 20:56:41,671 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 20:56:41,674 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 20:56:41,674 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 20:56:41,681 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 20:56:41,681 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:56:41" (1/1) ... [2023-11-21 20:56:41,683 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eeea464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:56:41, skipping insertion in model container [2023-11-21 20:56:41,683 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:56:41" (1/1) ... [2023-11-21 20:56:41,730 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 20:56:42,127 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:56:42,140 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 20:56:42,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:56:42,235 INFO L206 MainTranslator]: Completed translation [2023-11-21 20:56:42,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:56:42 WrapperNode [2023-11-21 20:56:42,236 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 20:56:42,237 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 20:56:42,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 20:56:42,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 20:56:42,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:56:42" (1/1) ... [2023-11-21 20:56:42,263 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:56:42" (1/1) ... [2023-11-21 20:56:42,293 INFO L138 Inliner]: procedures = 171, calls = 25, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 110 [2023-11-21 20:56:42,294 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 20:56:42,295 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 20:56:42,295 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 20:56:42,295 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 20:56:42,305 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:56:42" (1/1) ... [2023-11-21 20:56:42,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:56:42" (1/1) ... [2023-11-21 20:56:42,309 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:56:42" (1/1) ... [2023-11-21 20:56:42,310 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:56:42" (1/1) ... [2023-11-21 20:56:42,318 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:56:42" (1/1) ... [2023-11-21 20:56:42,323 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:56:42" (1/1) ... [2023-11-21 20:56:42,325 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:56:42" (1/1) ... [2023-11-21 20:56:42,327 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:56:42" (1/1) ... [2023-11-21 20:56:42,330 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 20:56:42,331 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 20:56:42,332 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 20:56:42,332 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 20:56:42,333 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:56:42" (1/1) ... [2023-11-21 20:56:42,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:56:42,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d5394a-79c8-484c-b37d-40d59a6ee1cf/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:56:42,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d5394a-79c8-484c-b37d-40d59a6ee1cf/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 20:56:42,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80d5394a-79c8-484c-b37d-40d59a6ee1cf/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 20:56:42,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 20:56:42,422 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-21 20:56:42,422 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-21 20:56:42,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 20:56:42,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 20:56:42,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 20:56:42,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 20:56:42,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 20:56:42,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 20:56:42,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 20:56:42,426 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 20:56:42,590 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 20:56:42,593 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 20:56:42,902 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 20:56:42,983 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 20:56:42,984 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 20:56:42,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:56:42 BoogieIcfgContainer [2023-11-21 20:56:42,986 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 20:56:42,988 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 20:56:42,988 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 20:56:42,992 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 20:56:42,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:56:41" (1/3) ... [2023-11-21 20:56:42,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec11a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:56:42, skipping insertion in model container [2023-11-21 20:56:42,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:56:42" (2/3) ... [2023-11-21 20:56:42,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec11a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:56:42, skipping insertion in model container [2023-11-21 20:56:42,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:56:42" (3/3) ... [2023-11-21 20:56:42,995 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-race.i [2023-11-21 20:56:43,003 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 20:56:43,011 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 20:56:43,011 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-21 20:56:43,012 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 20:56:43,115 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 20:56:43,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 107 transitions, 218 flow [2023-11-21 20:56:43,236 INFO L124 PetriNetUnfolderBase]: 10/118 cut-off events. [2023-11-21 20:56:43,236 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 20:56:43,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 118 events. 10/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 176 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 86. Up to 4 conditions per place. [2023-11-21 20:56:43,244 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 107 transitions, 218 flow [2023-11-21 20:56:43,249 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 107 transitions, 218 flow [2023-11-21 20:56:43,260 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 20:56:43,268 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;@337aaa38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 20:56:43,268 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-21 20:56:43,283 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 20:56:43,284 INFO L124 PetriNetUnfolderBase]: 2/49 cut-off events. [2023-11-21 20:56:43,284 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 20:56:43,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:56:43,285 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:56:43,285 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-11-21 20:56:43,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:56:43,291 INFO L85 PathProgramCache]: Analyzing trace with hash -146785618, now seen corresponding path program 1 times [2023-11-21 20:56:43,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:56:43,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881667239] [2023-11-21 20:56:43,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:56:43,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:56:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:56:43,450 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:56:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:56:43,511 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:56:43,513 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 20:56:43,514 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-21 20:56:43,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-21 20:56:43,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-21 20:56:43,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-21 20:56:43,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-21 20:56:43,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-21 20:56:43,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-21 20:56:43,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-21 20:56:43,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-21 20:56:43,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-21 20:56:43,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-21 20:56:43,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-21 20:56:43,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-21 20:56:43,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-21 20:56:43,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-21 20:56:43,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-21 20:56:43,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-21 20:56:43,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 20:56:43,522 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-21 20:56:43,526 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 20:56:43,526 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-21 20:56:43,584 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 20:56:43,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 181 transitions, 372 flow [2023-11-21 20:56:43,751 INFO L124 PetriNetUnfolderBase]: 19/205 cut-off events. [2023-11-21 20:56:43,752 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-21 20:56:43,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 205 events. 19/205 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 533 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 159. Up to 6 conditions per place. [2023-11-21 20:56:43,761 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 181 transitions, 372 flow [2023-11-21 20:56:43,771 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 181 transitions, 372 flow [2023-11-21 20:56:43,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 20:56:43,778 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;@337aaa38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 20:56:43,778 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-21 20:56:43,809 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 20:56:43,812 INFO L124 PetriNetUnfolderBase]: 4/79 cut-off events. [2023-11-21 20:56:43,813 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-21 20:56:43,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:56:43,814 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 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 20:56:43,815 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-21 20:56:43,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:56:43,816 INFO L85 PathProgramCache]: Analyzing trace with hash 591226717, now seen corresponding path program 1 times [2023-11-21 20:56:43,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:56:43,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858031275] [2023-11-21 20:56:43,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:56:43,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:56:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:56:43,907 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:56:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:56:43,958 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:56:43,958 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 20:56:43,959 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-11-21 20:56:43,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2023-11-21 20:56:43,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2023-11-21 20:56:43,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2023-11-21 20:56:43,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2023-11-21 20:56:43,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2023-11-21 20:56:43,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2023-11-21 20:56:43,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2023-11-21 20:56:43,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2023-11-21 20:56:43,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2023-11-21 20:56:43,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2023-11-21 20:56:43,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2023-11-21 20:56:43,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2023-11-21 20:56:43,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2023-11-21 20:56:43,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2023-11-21 20:56:43,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2023-11-21 20:56:43,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2023-11-21 20:56:43,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2023-11-21 20:56:43,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2023-11-21 20:56:43,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2023-11-21 20:56:43,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2023-11-21 20:56:43,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2023-11-21 20:56:43,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2023-11-21 20:56:43,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2023-11-21 20:56:43,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2023-11-21 20:56:43,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 20:56:43,971 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-21 20:56:43,972 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 20:56:43,972 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-21 20:56:44,092 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 20:56:44,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 255 transitions, 528 flow [2023-11-21 20:56:44,215 INFO L124 PetriNetUnfolderBase]: 28/292 cut-off events. [2023-11-21 20:56:44,215 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-21 20:56:44,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 292 events. 28/292 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 964 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 232. Up to 8 conditions per place. [2023-11-21 20:56:44,218 INFO L82 GeneralOperation]: Start removeDead. Operand has 237 places, 255 transitions, 528 flow [2023-11-21 20:56:44,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 255 transitions, 528 flow [2023-11-21 20:56:44,229 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 20:56:44,237 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;@337aaa38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 20:56:44,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-11-21 20:56:44,254 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 20:56:44,255 INFO L124 PetriNetUnfolderBase]: 7/111 cut-off events. [2023-11-21 20:56:44,255 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-21 20:56:44,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:56:44,255 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] [2023-11-21 20:56:44,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-21 20:56:44,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:56:44,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1216555659, now seen corresponding path program 1 times [2023-11-21 20:56:44,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:56:44,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868508634] [2023-11-21 20:56:44,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:56:44,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:56:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:56:44,406 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 20:56:44,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:56:44,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868508634] [2023-11-21 20:56:44,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868508634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:56:44,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:56:44,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 20:56:44,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818129550] [2023-11-21 20:56:44,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:56:44,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 20:56:44,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:56:44,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 20:56:44,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 20:56:44,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 255 [2023-11-21 20:56:44,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 255 transitions, 528 flow. Second operand has 2 states, 2 states have (on average 218.0) internal successors, (436), 2 states have internal predecessors, (436), 0 states have call successors, (0), 0 states 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 20:56:44,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:56:44,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 255 [2023-11-21 20:56:44,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:56:44,745 INFO L124 PetriNetUnfolderBase]: 94/971 cut-off events. [2023-11-21 20:56:44,746 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2023-11-21 20:56:44,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1104 conditions, 971 events. 94/971 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6098 event pairs, 42 based on Foata normal form. 167/1003 useless extension candidates. Maximal degree in co-relation 334. Up to 82 conditions per place. [2023-11-21 20:56:44,761 INFO L140 encePairwiseOnDemand]: 229/255 looper letters, 9 selfloop transitions, 0 changer transitions 0/215 dead transitions. [2023-11-21 20:56:44,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 215 transitions, 466 flow [2023-11-21 20:56:44,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 20:56:44,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-21 20:56:44,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 469 transitions. [2023-11-21 20:56:44,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9196078431372549 [2023-11-21 20:56:44,787 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 469 transitions. [2023-11-21 20:56:44,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 469 transitions. [2023-11-21 20:56:44,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:56:44,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 469 transitions. [2023-11-21 20:56:44,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 234.5) internal successors, (469), 2 states have internal predecessors, (469), 0 states have call successors, (0), 0 states 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 20:56:44,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states 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 20:56:44,807 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states 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 20:56:44,809 INFO L175 Difference]: Start difference. First operand has 237 places, 255 transitions, 528 flow. Second operand 2 states and 469 transitions. [2023-11-21 20:56:44,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 215 transitions, 466 flow [2023-11-21 20:56:44,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 215 transitions, 464 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-21 20:56:44,822 INFO L231 Difference]: Finished difference. Result has 211 places, 215 transitions, 446 flow [2023-11-21 20:56:44,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=446, PETRI_PLACES=211, PETRI_TRANSITIONS=215} [2023-11-21 20:56:44,828 INFO L281 CegarLoopForPetriNet]: 237 programPoint places, -26 predicate places. [2023-11-21 20:56:44,829 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 215 transitions, 446 flow [2023-11-21 20:56:44,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 218.0) internal successors, (436), 2 states have internal predecessors, (436), 0 states have call successors, (0), 0 states 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 20:56:44,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:56:44,830 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 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 20:56:44,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 20:56:44,831 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-21 20:56:44,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:56:44,831 INFO L85 PathProgramCache]: Analyzing trace with hash 235453185, now seen corresponding path program 1 times [2023-11-21 20:56:44,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:56:44,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75422473] [2023-11-21 20:56:44,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:56:44,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:56:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:56:44,890 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:56:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:56:44,937 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:56:44,937 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 20:56:44,937 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2023-11-21 20:56:44,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2023-11-21 20:56:44,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2023-11-21 20:56:44,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2023-11-21 20:56:44,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2023-11-21 20:56:44,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2023-11-21 20:56:44,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2023-11-21 20:56:44,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2023-11-21 20:56:44,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2023-11-21 20:56:44,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2023-11-21 20:56:44,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2023-11-21 20:56:44,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2023-11-21 20:56:44,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2023-11-21 20:56:44,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2023-11-21 20:56:44,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2023-11-21 20:56:44,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2023-11-21 20:56:44,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2023-11-21 20:56:44,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2023-11-21 20:56:44,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2023-11-21 20:56:44,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2023-11-21 20:56:44,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2023-11-21 20:56:44,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2023-11-21 20:56:44,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2023-11-21 20:56:44,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2023-11-21 20:56:44,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2023-11-21 20:56:44,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2023-11-21 20:56:44,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2023-11-21 20:56:44,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2023-11-21 20:56:44,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2023-11-21 20:56:44,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2023-11-21 20:56:44,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2023-11-21 20:56:44,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2023-11-21 20:56:44,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2023-11-21 20:56:44,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 20:56:44,950 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-21 20:56:44,951 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 20:56:44,951 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-21 20:56:45,026 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 20:56:45,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 329 transitions, 686 flow [2023-11-21 20:56:45,136 INFO L124 PetriNetUnfolderBase]: 37/379 cut-off events. [2023-11-21 20:56:45,136 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-21 20:56:45,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 379 events. 37/379 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1436 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 305. Up to 10 conditions per place. [2023-11-21 20:56:45,141 INFO L82 GeneralOperation]: Start removeDead. Operand has 305 places, 329 transitions, 686 flow [2023-11-21 20:56:45,149 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 305 places, 329 transitions, 686 flow [2023-11-21 20:56:45,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 20:56:45,157 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;@337aaa38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 20:56:45,157 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-11-21 20:56:45,172 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 20:56:45,172 INFO L124 PetriNetUnfolderBase]: 7/111 cut-off events. [2023-11-21 20:56:45,173 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-21 20:56:45,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:56:45,173 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] [2023-11-21 20:56:45,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-11-21 20:56:45,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:56:45,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1920787650, now seen corresponding path program 1 times [2023-11-21 20:56:45,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:56:45,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267283508] [2023-11-21 20:56:45,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:56:45,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:56:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:56:45,262 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 20:56:45,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:56:45,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267283508] [2023-11-21 20:56:45,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267283508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:56:45,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:56:45,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 20:56:45,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606111485] [2023-11-21 20:56:45,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:56:45,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 20:56:45,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:56:45,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 20:56:45,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 20:56:45,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 329 [2023-11-21 20:56:45,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 329 transitions, 686 flow. Second operand has 2 states, 2 states have (on average 280.0) internal successors, (560), 2 states have internal predecessors, (560), 0 states have call successors, (0), 0 states 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 20:56:45,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:56:45,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 329 [2023-11-21 20:56:45,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:56:46,187 INFO L124 PetriNetUnfolderBase]: 364/3014 cut-off events. [2023-11-21 20:56:46,187 INFO L125 PetriNetUnfolderBase]: For 496/496 co-relation queries the response was YES. [2023-11-21 20:56:46,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3526 conditions, 3014 events. 364/3014 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 26618 event pairs, 204 based on Foata normal form. 659/3256 useless extension candidates. Maximal degree in co-relation 1095. Up to 325 conditions per place. [2023-11-21 20:56:46,249 INFO L140 encePairwiseOnDemand]: 295/329 looper letters, 12 selfloop transitions, 0 changer transitions 0/278 dead transitions. [2023-11-21 20:56:46,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 278 transitions, 608 flow [2023-11-21 20:56:46,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 20:56:46,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-21 20:56:46,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 604 transitions. [2023-11-21 20:56:46,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9179331306990881 [2023-11-21 20:56:46,253 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 604 transitions. [2023-11-21 20:56:46,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 604 transitions. [2023-11-21 20:56:46,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:56:46,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 604 transitions. [2023-11-21 20:56:46,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 302.0) internal successors, (604), 2 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 20:56:46,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 329.0) internal successors, (987), 3 states have internal predecessors, (987), 0 states have call successors, (0), 0 states 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 20:56:46,261 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 329.0) internal successors, (987), 3 states have internal predecessors, (987), 0 states have call successors, (0), 0 states 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 20:56:46,261 INFO L175 Difference]: Start difference. First operand has 305 places, 329 transitions, 686 flow. Second operand 2 states and 604 transitions. [2023-11-21 20:56:46,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 278 transitions, 608 flow [2023-11-21 20:56:46,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 278 transitions, 602 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-21 20:56:46,280 INFO L231 Difference]: Finished difference. Result has 272 places, 278 transitions, 578 flow [2023-11-21 20:56:46,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=578, PETRI_PLACES=272, PETRI_TRANSITIONS=278} [2023-11-21 20:56:46,283 INFO L281 CegarLoopForPetriNet]: 305 programPoint places, -33 predicate places. [2023-11-21 20:56:46,283 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 278 transitions, 578 flow [2023-11-21 20:56:46,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 280.0) internal successors, (560), 2 states have internal predecessors, (560), 0 states have call successors, (0), 0 states 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 20:56:46,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:56:46,284 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] [2023-11-21 20:56:46,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 20:56:46,284 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-11-21 20:56:46,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:56:46,285 INFO L85 PathProgramCache]: Analyzing trace with hash 959048354, now seen corresponding path program 1 times [2023-11-21 20:56:46,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:56:46,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113456667] [2023-11-21 20:56:46,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:56:46,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:56:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:56:46,392 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 20:56:46,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:56:46,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113456667] [2023-11-21 20:56:46,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113456667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:56:46,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:56:46,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:56:46,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994788114] [2023-11-21 20:56:46,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:56:46,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:56:46,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:56:46,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:56:46,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:56:46,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 329 [2023-11-21 20:56:46,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 278 transitions, 578 flow. Second operand has 3 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 0 states have call successors, (0), 0 states 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 20:56:46,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:56:46,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 329 [2023-11-21 20:56:46,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:56:48,561 INFO L124 PetriNetUnfolderBase]: 1135/6573 cut-off events. [2023-11-21 20:56:48,561 INFO L125 PetriNetUnfolderBase]: For 643/643 co-relation queries the response was YES. [2023-11-21 20:56:48,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8183 conditions, 6573 events. 1135/6573 cut-off events. For 643/643 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 69293 event pairs, 690 based on Foata normal form. 40/5627 useless extension candidates. Maximal degree in co-relation 8176. Up to 1091 conditions per place. [2023-11-21 20:56:48,696 INFO L140 encePairwiseOnDemand]: 326/329 looper letters, 27 selfloop transitions, 2 changer transitions 0/288 dead transitions. [2023-11-21 20:56:48,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 288 transitions, 671 flow [2023-11-21 20:56:48,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:56:48,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 20:56:48,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 846 transitions. [2023-11-21 20:56:48,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2023-11-21 20:56:48,700 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 846 transitions. [2023-11-21 20:56:48,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 846 transitions. [2023-11-21 20:56:48,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:56:48,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 846 transitions. [2023-11-21 20:56:48,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.0) internal successors, (846), 3 states have internal predecessors, (846), 0 states have call successors, (0), 0 states 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 20:56:48,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states 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 20:56:48,708 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states 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 20:56:48,708 INFO L175 Difference]: Start difference. First operand has 272 places, 278 transitions, 578 flow. Second operand 3 states and 846 transitions. [2023-11-21 20:56:48,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 288 transitions, 671 flow [2023-11-21 20:56:48,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 288 transitions, 671 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 20:56:48,719 INFO L231 Difference]: Finished difference. Result has 275 places, 279 transitions, 590 flow [2023-11-21 20:56:48,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=590, PETRI_PLACES=275, PETRI_TRANSITIONS=279} [2023-11-21 20:56:48,723 INFO L281 CegarLoopForPetriNet]: 305 programPoint places, -30 predicate places. [2023-11-21 20:56:48,723 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 279 transitions, 590 flow [2023-11-21 20:56:48,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 0 states have call successors, (0), 0 states 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 20:56:48,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:56:48,724 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:56:48,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 20:56:48,725 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-11-21 20:56:48,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:56:48,725 INFO L85 PathProgramCache]: Analyzing trace with hash -86013276, now seen corresponding path program 1 times [2023-11-21 20:56:48,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:56:48,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782218515] [2023-11-21 20:56:48,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:56:48,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:56:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:56:49,368 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 20:56:49,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:56:49,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782218515] [2023-11-21 20:56:49,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782218515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:56:49,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:56:49,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 20:56:49,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105043605] [2023-11-21 20:56:49,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:56:49,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 20:56:49,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:56:49,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 20:56:49,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:56:49,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 329 [2023-11-21 20:56:49,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 279 transitions, 590 flow. Second operand has 6 states, 6 states have (on average 268.6666666666667) internal successors, (1612), 6 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states 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 20:56:49,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:56:49,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 329 [2023-11-21 20:56:49,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:56:52,665 INFO L124 PetriNetUnfolderBase]: 1956/9987 cut-off events. [2023-11-21 20:56:52,666 INFO L125 PetriNetUnfolderBase]: For 1335/1335 co-relation queries the response was YES. [2023-11-21 20:56:52,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13041 conditions, 9987 events. 1956/9987 cut-off events. For 1335/1335 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 111990 event pairs, 609 based on Foata normal form. 0/8669 useless extension candidates. Maximal degree in co-relation 13032. Up to 971 conditions per place. [2023-11-21 20:56:52,905 INFO L140 encePairwiseOnDemand]: 323/329 looper letters, 54 selfloop transitions, 6 changer transitions 0/314 dead transitions. [2023-11-21 20:56:52,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 314 transitions, 840 flow [2023-11-21 20:56:52,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 20:56:52,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 20:56:52,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1662 transitions. [2023-11-21 20:56:52,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8419452887537994 [2023-11-21 20:56:52,914 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1662 transitions. [2023-11-21 20:56:52,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1662 transitions. [2023-11-21 20:56:52,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:56:52,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1662 transitions. [2023-11-21 20:56:52,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 277.0) internal successors, (1662), 6 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states 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 20:56:52,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 329.0) internal successors, (2303), 7 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states 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 20:56:52,938 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 329.0) internal successors, (2303), 7 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states 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 20:56:52,938 INFO L175 Difference]: Start difference. First operand has 275 places, 279 transitions, 590 flow. Second operand 6 states and 1662 transitions. [2023-11-21 20:56:52,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 314 transitions, 840 flow [2023-11-21 20:56:52,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 314 transitions, 838 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 20:56:52,949 INFO L231 Difference]: Finished difference. Result has 278 places, 278 transitions, 598 flow [2023-11-21 20:56:52,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=598, PETRI_PLACES=278, PETRI_TRANSITIONS=278} [2023-11-21 20:56:52,953 INFO L281 CegarLoopForPetriNet]: 305 programPoint places, -27 predicate places. [2023-11-21 20:56:52,954 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 278 transitions, 598 flow [2023-11-21 20:56:52,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 268.6666666666667) internal successors, (1612), 6 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states 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 20:56:52,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:56:52,962 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 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 20:56:52,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 20:56:52,963 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-11-21 20:56:52,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:56:52,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1517497262, now seen corresponding path program 1 times [2023-11-21 20:56:52,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:56:52,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803701184] [2023-11-21 20:56:52,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:56:52,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:56:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:56:52,989 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:56:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:56:53,029 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:56:53,030 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 20:56:53,030 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2023-11-21 20:56:53,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (39 of 41 remaining) [2023-11-21 20:56:53,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (38 of 41 remaining) [2023-11-21 20:56:53,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (37 of 41 remaining) [2023-11-21 20:56:53,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (36 of 41 remaining) [2023-11-21 20:56:53,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (35 of 41 remaining) [2023-11-21 20:56:53,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 41 remaining) [2023-11-21 20:56:53,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (33 of 41 remaining) [2023-11-21 20:56:53,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (32 of 41 remaining) [2023-11-21 20:56:53,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (31 of 41 remaining) [2023-11-21 20:56:53,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (30 of 41 remaining) [2023-11-21 20:56:53,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (29 of 41 remaining) [2023-11-21 20:56:53,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (28 of 41 remaining) [2023-11-21 20:56:53,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (27 of 41 remaining) [2023-11-21 20:56:53,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (26 of 41 remaining) [2023-11-21 20:56:53,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (25 of 41 remaining) [2023-11-21 20:56:53,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (24 of 41 remaining) [2023-11-21 20:56:53,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 41 remaining) [2023-11-21 20:56:53,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 41 remaining) [2023-11-21 20:56:53,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 41 remaining) [2023-11-21 20:56:53,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (20 of 41 remaining) [2023-11-21 20:56:53,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 41 remaining) [2023-11-21 20:56:53,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 41 remaining) [2023-11-21 20:56:53,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 41 remaining) [2023-11-21 20:56:53,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 41 remaining) [2023-11-21 20:56:53,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 41 remaining) [2023-11-21 20:56:53,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 41 remaining) [2023-11-21 20:56:53,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 41 remaining) [2023-11-21 20:56:53,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 41 remaining) [2023-11-21 20:56:53,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (11 of 41 remaining) [2023-11-21 20:56:53,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 41 remaining) [2023-11-21 20:56:53,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 41 remaining) [2023-11-21 20:56:53,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 41 remaining) [2023-11-21 20:56:53,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 41 remaining) [2023-11-21 20:56:53,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 41 remaining) [2023-11-21 20:56:53,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 41 remaining) [2023-11-21 20:56:53,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 41 remaining) [2023-11-21 20:56:53,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 41 remaining) [2023-11-21 20:56:53,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 41 remaining) [2023-11-21 20:56:53,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (1 of 41 remaining) [2023-11-21 20:56:53,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 41 remaining) [2023-11-21 20:56:53,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 20:56:53,040 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-21 20:56:53,041 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 20:56:53,041 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-21 20:56:53,130 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 20:56:53,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 373 places, 403 transitions, 846 flow [2023-11-21 20:56:53,269 INFO L124 PetriNetUnfolderBase]: 46/466 cut-off events. [2023-11-21 20:56:53,269 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-21 20:56:53,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 466 events. 46/466 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1911 event pairs, 0 based on Foata normal form. 0/374 useless extension candidates. Maximal degree in co-relation 392. Up to 12 conditions per place. [2023-11-21 20:56:53,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 373 places, 403 transitions, 846 flow [2023-11-21 20:56:53,403 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 373 places, 403 transitions, 846 flow [2023-11-21 20:56:53,405 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 20:56:53,405 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;@337aaa38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 20:56:53,405 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2023-11-21 20:56:53,417 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 20:56:53,417 INFO L124 PetriNetUnfolderBase]: 7/111 cut-off events. [2023-11-21 20:56:53,417 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-21 20:56:53,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:56:53,418 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] [2023-11-21 20:56:53,418 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-21 20:56:53,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:56:53,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1027511815, now seen corresponding path program 1 times [2023-11-21 20:56:53,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:56:53,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760013125] [2023-11-21 20:56:53,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:56:53,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:56:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:56:53,452 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 20:56:53,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:56:53,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760013125] [2023-11-21 20:56:53,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760013125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:56:53,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:56:53,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 20:56:53,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256967898] [2023-11-21 20:56:53,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:56:53,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 20:56:53,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:56:53,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 20:56:53,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 20:56:53,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 403 [2023-11-21 20:56:53,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 403 transitions, 846 flow. Second operand has 2 states, 2 states have (on average 342.0) internal successors, (684), 2 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 20:56:53,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:56:53,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 403 [2023-11-21 20:56:53,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:56:56,170 INFO L124 PetriNetUnfolderBase]: 1336/9305 cut-off events. [2023-11-21 20:56:56,171 INFO L125 PetriNetUnfolderBase]: For 2359/2359 co-relation queries the response was YES. [2023-11-21 20:56:56,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11195 conditions, 9305 events. 1336/9305 cut-off events. For 2359/2359 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 105027 event pairs, 852 based on Foata normal form. 2459/10501 useless extension candidates. Maximal degree in co-relation 3543. Up to 1216 conditions per place. [2023-11-21 20:56:56,406 INFO L140 encePairwiseOnDemand]: 361/403 looper letters, 15 selfloop transitions, 0 changer transitions 0/341 dead transitions. [2023-11-21 20:56:56,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 341 transitions, 752 flow [2023-11-21 20:56:56,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 20:56:56,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-21 20:56:56,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 739 transitions. [2023-11-21 20:56:56,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9168734491315137 [2023-11-21 20:56:56,410 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 739 transitions. [2023-11-21 20:56:56,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 739 transitions. [2023-11-21 20:56:56,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:56:56,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 739 transitions. [2023-11-21 20:56:56,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 369.5) internal successors, (739), 2 states have internal predecessors, (739), 0 states have call successors, (0), 0 states 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 20:56:56,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 403.0) internal successors, (1209), 3 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states 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 20:56:56,419 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 403.0) internal successors, (1209), 3 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states 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 20:56:56,419 INFO L175 Difference]: Start difference. First operand has 373 places, 403 transitions, 846 flow. Second operand 2 states and 739 transitions. [2023-11-21 20:56:56,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 341 transitions, 752 flow [2023-11-21 20:56:56,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 341 transitions, 740 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-21 20:56:56,438 INFO L231 Difference]: Finished difference. Result has 333 places, 341 transitions, 710 flow [2023-11-21 20:56:56,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=710, PETRI_PLACES=333, PETRI_TRANSITIONS=341} [2023-11-21 20:56:56,442 INFO L281 CegarLoopForPetriNet]: 373 programPoint places, -40 predicate places. [2023-11-21 20:56:56,442 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 341 transitions, 710 flow [2023-11-21 20:56:56,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 342.0) internal successors, (684), 2 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 20:56:56,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:56:56,443 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] [2023-11-21 20:56:56,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 20:56:56,446 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-21 20:56:56,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:56:56,446 INFO L85 PathProgramCache]: Analyzing trace with hash -403570581, now seen corresponding path program 1 times [2023-11-21 20:56:56,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:56:56,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924892854] [2023-11-21 20:56:56,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:56:56,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:56:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:56:56,509 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 20:56:56,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:56:56,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924892854] [2023-11-21 20:56:56,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924892854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:56:56,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:56:56,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:56:56,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99434821] [2023-11-21 20:56:56,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:56:56,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:56:56,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:56:56,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:56:56,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:56:56,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 403 [2023-11-21 20:56:56,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 341 transitions, 710 flow. Second operand has 3 states, 3 states have (on average 336.3333333333333) internal successors, (1009), 3 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states 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 20:56:56,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:56:56,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 403 [2023-11-21 20:56:56,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:57:02,359 INFO L124 PetriNetUnfolderBase]: 4345/23151 cut-off events. [2023-11-21 20:57:02,359 INFO L125 PetriNetUnfolderBase]: For 2701/2701 co-relation queries the response was YES. [2023-11-21 20:57:02,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28812 conditions, 23151 events. 4345/23151 cut-off events. For 2701/2701 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 303684 event pairs, 2796 based on Foata normal form. 121/19886 useless extension candidates. Maximal degree in co-relation 28804. Up to 4007 conditions per place. [2023-11-21 20:57:02,950 INFO L140 encePairwiseOnDemand]: 400/403 looper letters, 33 selfloop transitions, 2 changer transitions 0/354 dead transitions. [2023-11-21 20:57:02,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 354 transitions, 826 flow [2023-11-21 20:57:02,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:57:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 20:57:02,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1038 transitions. [2023-11-21 20:57:02,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.858560794044665 [2023-11-21 20:57:02,956 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1038 transitions. [2023-11-21 20:57:02,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1038 transitions. [2023-11-21 20:57:02,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:57:02,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1038 transitions. [2023-11-21 20:57:02,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states 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 20:57:02,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states 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 20:57:02,970 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states 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 20:57:02,971 INFO L175 Difference]: Start difference. First operand has 333 places, 341 transitions, 710 flow. Second operand 3 states and 1038 transitions. [2023-11-21 20:57:02,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 354 transitions, 826 flow [2023-11-21 20:57:02,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 354 transitions, 826 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 20:57:02,999 INFO L231 Difference]: Finished difference. Result has 336 places, 342 transitions, 722 flow [2023-11-21 20:57:03,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=722, PETRI_PLACES=336, PETRI_TRANSITIONS=342} [2023-11-21 20:57:03,003 INFO L281 CegarLoopForPetriNet]: 373 programPoint places, -37 predicate places. [2023-11-21 20:57:03,003 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 342 transitions, 722 flow [2023-11-21 20:57:03,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 336.3333333333333) internal successors, (1009), 3 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states 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 20:57:03,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:57:03,006 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] [2023-11-21 20:57:03,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 20:57:03,007 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-21 20:57:03,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:03,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2130463675, now seen corresponding path program 1 times [2023-11-21 20:57:03,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:57:03,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403976590] [2023-11-21 20:57:03,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:03,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:57:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:03,539 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 20:57:03,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:57:03,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403976590] [2023-11-21 20:57:03,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403976590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:57:03,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:57:03,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 20:57:03,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943862328] [2023-11-21 20:57:03,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:57:03,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 20:57:03,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:57:03,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 20:57:03,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:57:04,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 403 [2023-11-21 20:57:04,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 342 transitions, 722 flow. Second operand has 6 states, 6 states have (on average 330.6666666666667) internal successors, (1984), 6 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 20:57:04,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:57:04,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 403 [2023-11-21 20:57:04,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:57:13,088 INFO L124 PetriNetUnfolderBase]: 7356/31839 cut-off events. [2023-11-21 20:57:13,089 INFO L125 PetriNetUnfolderBase]: For 4926/4926 co-relation queries the response was YES. [2023-11-21 20:57:13,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42508 conditions, 31839 events. 7356/31839 cut-off events. For 4926/4926 co-relation queries the response was YES. Maximal size of possible extension queue 832. Compared 423262 event pairs, 2472 based on Foata normal form. 0/27782 useless extension candidates. Maximal degree in co-relation 42498. Up to 3563 conditions per place. [2023-11-21 20:57:13,840 INFO L140 encePairwiseOnDemand]: 397/403 looper letters, 69 selfloop transitions, 6 changer transitions 0/389 dead transitions. [2023-11-21 20:57:13,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 389 transitions, 1046 flow [2023-11-21 20:57:13,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 20:57:13,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 20:57:13,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2049 transitions. [2023-11-21 20:57:13,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.847394540942928 [2023-11-21 20:57:13,852 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2049 transitions. [2023-11-21 20:57:13,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2049 transitions. [2023-11-21 20:57:13,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:57:13,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2049 transitions. [2023-11-21 20:57:13,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 341.5) internal successors, (2049), 6 states have internal predecessors, (2049), 0 states have call successors, (0), 0 states 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 20:57:13,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 403.0) internal successors, (2821), 7 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states 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 20:57:13,873 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 403.0) internal successors, (2821), 7 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states 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 20:57:13,874 INFO L175 Difference]: Start difference. First operand has 336 places, 342 transitions, 722 flow. Second operand 6 states and 2049 transitions. [2023-11-21 20:57:13,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 389 transitions, 1046 flow [2023-11-21 20:57:13,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 389 transitions, 1044 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 20:57:13,895 INFO L231 Difference]: Finished difference. Result has 339 places, 341 transitions, 730 flow [2023-11-21 20:57:13,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=730, PETRI_PLACES=339, PETRI_TRANSITIONS=341} [2023-11-21 20:57:13,897 INFO L281 CegarLoopForPetriNet]: 373 programPoint places, -34 predicate places. [2023-11-21 20:57:13,897 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 341 transitions, 730 flow [2023-11-21 20:57:13,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 330.6666666666667) internal successors, (1984), 6 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 20:57:13,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:57:13,898 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-11-21 20:57:13,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 20:57:13,899 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-21 20:57:13,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:13,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1290367185, now seen corresponding path program 1 times [2023-11-21 20:57:13,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:57:13,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100747345] [2023-11-21 20:57:13,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:13,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:57:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:13,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 20:57:13,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:57:13,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100747345] [2023-11-21 20:57:13,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100747345] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:57:13,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:57:13,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:57:13,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088740615] [2023-11-21 20:57:13,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:57:13,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:57:13,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:57:13,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:57:13,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:57:14,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 403 [2023-11-21 20:57:14,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 341 transitions, 730 flow. Second operand has 3 states, 3 states have (on average 336.6666666666667) internal successors, (1010), 3 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states 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 20:57:14,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:57:14,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 403 [2023-11-21 20:57:14,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:57:19,959 INFO L124 PetriNetUnfolderBase]: 4209/20561 cut-off events. [2023-11-21 20:57:19,959 INFO L125 PetriNetUnfolderBase]: For 2442/2442 co-relation queries the response was YES. [2023-11-21 20:57:20,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26202 conditions, 20561 events. 4209/20561 cut-off events. For 2442/2442 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 260813 event pairs, 2790 based on Foata normal form. 120/17702 useless extension candidates. Maximal degree in co-relation 26192. Up to 3994 conditions per place. [2023-11-21 20:57:20,450 INFO L140 encePairwiseOnDemand]: 400/403 looper letters, 32 selfloop transitions, 2 changer transitions 0/353 dead transitions. [2023-11-21 20:57:20,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 353 transitions, 837 flow [2023-11-21 20:57:20,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:57:20,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 20:57:20,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1037 transitions. [2023-11-21 20:57:20,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8577336641852771 [2023-11-21 20:57:20,456 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1037 transitions. [2023-11-21 20:57:20,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1037 transitions. [2023-11-21 20:57:20,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:57:20,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1037 transitions. [2023-11-21 20:57:20,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 345.6666666666667) internal successors, (1037), 3 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states 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 20:57:20,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states 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 20:57:20,468 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states 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 20:57:20,469 INFO L175 Difference]: Start difference. First operand has 339 places, 341 transitions, 730 flow. Second operand 3 states and 1037 transitions. [2023-11-21 20:57:20,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 353 transitions, 837 flow [2023-11-21 20:57:20,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 353 transitions, 825 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-21 20:57:20,486 INFO L231 Difference]: Finished difference. Result has 337 places, 342 transitions, 730 flow [2023-11-21 20:57:20,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=730, PETRI_PLACES=337, PETRI_TRANSITIONS=342} [2023-11-21 20:57:20,488 INFO L281 CegarLoopForPetriNet]: 373 programPoint places, -36 predicate places. [2023-11-21 20:57:20,489 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 342 transitions, 730 flow [2023-11-21 20:57:20,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 336.6666666666667) internal successors, (1010), 3 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states 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 20:57:20,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:57:20,490 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-11-21 20:57:20,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 20:57:20,491 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-21 20:57:20,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:20,491 INFO L85 PathProgramCache]: Analyzing trace with hash 398690038, now seen corresponding path program 1 times [2023-11-21 20:57:20,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:57:20,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145656081] [2023-11-21 20:57:20,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:20,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:57:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:21,227 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 20:57:21,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:57:21,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145656081] [2023-11-21 20:57:21,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145656081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:57:21,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:57:21,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 20:57:21,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071414904] [2023-11-21 20:57:21,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:57:21,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 20:57:21,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:57:21,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 20:57:21,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:57:21,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 403 [2023-11-21 20:57:21,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 342 transitions, 730 flow. Second operand has 6 states, 6 states have (on average 330.8333333333333) internal successors, (1985), 6 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states 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 20:57:21,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:57:21,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 403 [2023-11-21 20:57:21,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:57:29,937 INFO L124 PetriNetUnfolderBase]: 7144/30588 cut-off events. [2023-11-21 20:57:29,937 INFO L125 PetriNetUnfolderBase]: For 4516/4516 co-relation queries the response was YES.