./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc 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_a97ea92f-11df-4124-adcd-a0ad0fb7efbc/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a97ea92f-11df-4124-adcd-a0ad0fb7efbc/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a97ea92f-11df-4124-adcd-a0ad0fb7efbc/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a97ea92f-11df-4124-adcd-a0ad0fb7efbc/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a97ea92f-11df-4124-adcd-a0ad0fb7efbc/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a97ea92f-11df-4124-adcd-a0ad0fb7efbc/bin/uautomizer-verify-BQ2R08f2Ya --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 3a956b76a4ba98ce13df4d83ef2fb7ffa0973225ecb152c14bcfbb55b6546601 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:05:22,834 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:05:22,896 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a97ea92f-11df-4124-adcd-a0ad0fb7efbc/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-29 05:05:22,901 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:05:22,902 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:05:22,924 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:05:22,924 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:05:22,925 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:05:22,925 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:05:22,926 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:05:22,927 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:05:22,927 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:05:22,928 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:05:22,928 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:05:22,929 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:05:22,929 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:05:22,930 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:05:22,930 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:05:22,931 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:05:22,931 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:05:22,932 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:05:22,932 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:05:22,933 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-29 05:05:22,933 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 05:05:22,934 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:05:22,934 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:05:22,935 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:05:22,935 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:05:22,936 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:05:22,936 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:05:22,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:05:22,937 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:05:22,937 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:05:22,937 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:05:22,938 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:05:22,938 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:05:22,938 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:05:22,938 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:05:22,938 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:05:22,939 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:05:22,939 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:05:22,939 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_a97ea92f-11df-4124-adcd-a0ad0fb7efbc/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a97ea92f-11df-4124-adcd-a0ad0fb7efbc/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a956b76a4ba98ce13df4d83ef2fb7ffa0973225ecb152c14bcfbb55b6546601 [2023-11-29 05:05:23,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:05:23,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:05:23,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:05:23,185 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:05:23,185 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:05:23,186 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a97ea92f-11df-4124-adcd-a0ad0fb7efbc/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2023-11-29 05:05:25,874 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:05:26,105 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:05:26,105 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a97ea92f-11df-4124-adcd-a0ad0fb7efbc/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2023-11-29 05:05:26,121 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a97ea92f-11df-4124-adcd-a0ad0fb7efbc/bin/uautomizer-verify-BQ2R08f2Ya/data/47625ff31/3aea1322524d454f95516ae465f12451/FLAG03f45f9bd [2023-11-29 05:05:26,133 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a97ea92f-11df-4124-adcd-a0ad0fb7efbc/bin/uautomizer-verify-BQ2R08f2Ya/data/47625ff31/3aea1322524d454f95516ae465f12451 [2023-11-29 05:05:26,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:05:26,137 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:05:26,138 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:05:26,138 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:05:26,142 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:05:26,143 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:05:26" (1/1) ... [2023-11-29 05:05:26,144 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ecae2ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:05:26, skipping insertion in model container [2023-11-29 05:05:26,144 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:05:26" (1/1) ... [2023-11-29 05:05:26,189 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:05:26,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:05:26,534 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:05:26,589 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:05:26,629 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:05:26,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:05:26 WrapperNode [2023-11-29 05:05:26,629 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:05:26,630 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:05:26,630 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:05:26,630 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:05:26,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:05:26" (1/1) ... [2023-11-29 05:05:26,658 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:05:26" (1/1) ... [2023-11-29 05:05:26,691 INFO L138 Inliner]: procedures = 224, calls = 48, calls flagged for inlining = 16, calls inlined = 10, statements flattened = 207 [2023-11-29 05:05:26,691 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:05:26,692 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:05:26,692 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:05:26,692 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:05:26,700 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:05:26" (1/1) ... [2023-11-29 05:05:26,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:05:26" (1/1) ... [2023-11-29 05:05:26,705 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:05:26" (1/1) ... [2023-11-29 05:05:26,706 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:05:26" (1/1) ... [2023-11-29 05:05:26,742 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:05:26" (1/1) ... [2023-11-29 05:05:26,746 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:05:26" (1/1) ... [2023-11-29 05:05:26,748 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:05:26" (1/1) ... [2023-11-29 05:05:26,751 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:05:26" (1/1) ... [2023-11-29 05:05:26,755 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:05:26,756 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:05:26,756 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:05:26,757 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:05:26,757 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:05:26" (1/1) ... [2023-11-29 05:05:26,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:05:26,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a97ea92f-11df-4124-adcd-a0ad0fb7efbc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:05:26,785 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a97ea92f-11df-4124-adcd-a0ad0fb7efbc/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:05:26,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a97ea92f-11df-4124-adcd-a0ad0fb7efbc/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:05:26,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:05:26,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:05:26,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 05:05:26,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 05:05:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:05:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 05:05:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure reader_nowait_fn [2023-11-29 05:05:26,824 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_nowait_fn [2023-11-29 05:05:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:05:26,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:05:26,826 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 05:05:26,944 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:05:26,946 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:05:27,325 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:05:27,338 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:05:27,338 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 05:05:27,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:05:27 BoogieIcfgContainer [2023-11-29 05:05:27,340 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:05:27,342 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:05:27,342 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:05:27,345 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:05:27,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:05:26" (1/3) ... [2023-11-29 05:05:27,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d7b91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:05:27, skipping insertion in model container [2023-11-29 05:05:27,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:05:26" (2/3) ... [2023-11-29 05:05:27,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d7b91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:05:27, skipping insertion in model container [2023-11-29 05:05:27,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:05:27" (3/3) ... [2023-11-29 05:05:27,348 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_1w1r-1.i [2023-11-29 05:05:27,357 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 05:05:27,367 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:05:27,367 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-11-29 05:05:27,367 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 05:05:27,451 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-29 05:05:27,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 250 transitions, 507 flow [2023-11-29 05:05:27,592 INFO L124 PetriNetUnfolderBase]: 12/249 cut-off events. [2023-11-29 05:05:27,592 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 05:05:27,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 249 events. 12/249 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 601 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2023-11-29 05:05:27,600 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 250 transitions, 507 flow [2023-11-29 05:05:27,607 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 240 transitions, 483 flow [2023-11-29 05:05:27,617 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:05:27,623 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;@13f757e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:05:27,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-29 05:05:27,631 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:05:27,631 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2023-11-29 05:05:27,631 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:05:27,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:05:27,632 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] [2023-11-29 05:05:27,632 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 05:05:27,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:05:27,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1569837443, now seen corresponding path program 1 times [2023-11-29 05:05:27,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:05:27,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509470558] [2023-11-29 05:05:27,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:05:27,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:05:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:05:28,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:05:28,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:05:28,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509470558] [2023-11-29 05:05:28,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509470558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:05:28,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:05:28,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:05:28,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302418210] [2023-11-29 05:05:28,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:05:28,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:05:28,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:05:28,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:05:28,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:05:28,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 250 [2023-11-29 05:05:28,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 240 transitions, 483 flow. Second operand has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 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) [2023-11-29 05:05:28,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:05:28,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 250 [2023-11-29 05:05:28,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:05:29,468 INFO L124 PetriNetUnfolderBase]: 803/3602 cut-off events. [2023-11-29 05:05:29,468 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 05:05:29,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5125 conditions, 3602 events. 803/3602 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 29709 event pairs, 672 based on Foata normal form. 336/3577 useless extension candidates. Maximal degree in co-relation 5066. Up to 1514 conditions per place. [2023-11-29 05:05:29,495 INFO L140 encePairwiseOnDemand]: 235/250 looper letters, 58 selfloop transitions, 5 changer transitions 0/224 dead transitions. [2023-11-29 05:05:29,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 224 transitions, 577 flow [2023-11-29 05:05:29,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:05:29,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:05:29,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1129 transitions. [2023-11-29 05:05:29,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7526666666666667 [2023-11-29 05:05:29,517 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1129 transitions. [2023-11-29 05:05:29,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1129 transitions. [2023-11-29 05:05:29,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:05:29,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1129 transitions. [2023-11-29 05:05:29,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 188.16666666666666) internal successors, (1129), 6 states have internal predecessors, (1129), 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) [2023-11-29 05:05:29,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 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) [2023-11-29 05:05:29,541 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 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) [2023-11-29 05:05:29,542 INFO L175 Difference]: Start difference. First operand has 232 places, 240 transitions, 483 flow. Second operand 6 states and 1129 transitions. [2023-11-29 05:05:29,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 224 transitions, 577 flow [2023-11-29 05:05:29,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 224 transitions, 576 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:05:29,554 INFO L231 Difference]: Finished difference. Result has 229 places, 224 transitions, 460 flow [2023-11-29 05:05:29,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=460, PETRI_PLACES=229, PETRI_TRANSITIONS=224} [2023-11-29 05:05:29,560 INFO L281 CegarLoopForPetriNet]: 232 programPoint places, -3 predicate places. [2023-11-29 05:05:29,561 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 224 transitions, 460 flow [2023-11-29 05:05:29,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 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) [2023-11-29 05:05:29,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:05:29,562 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] [2023-11-29 05:05:29,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:05:29,563 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 05:05:29,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:05:29,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1577631460, now seen corresponding path program 1 times [2023-11-29 05:05:29,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:05:29,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662485746] [2023-11-29 05:05:29,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:05:29,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:05:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:05:29,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:05:29,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:05:29,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662485746] [2023-11-29 05:05:29,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662485746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:05:29,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:05:29,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:05:29,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758758931] [2023-11-29 05:05:29,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:05:29,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:05:29,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:05:29,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:05:29,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:05:30,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 250 [2023-11-29 05:05:30,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 224 transitions, 460 flow. Second operand has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 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) [2023-11-29 05:05:30,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:05:30,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 250 [2023-11-29 05:05:30,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:05:30,959 INFO L124 PetriNetUnfolderBase]: 803/3601 cut-off events. [2023-11-29 05:05:30,960 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:05:30,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5129 conditions, 3601 events. 803/3601 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 29798 event pairs, 672 based on Foata normal form. 0/3241 useless extension candidates. Maximal degree in co-relation 5078. Up to 1514 conditions per place. [2023-11-29 05:05:30,985 INFO L140 encePairwiseOnDemand]: 244/250 looper letters, 58 selfloop transitions, 5 changer transitions 0/223 dead transitions. [2023-11-29 05:05:30,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 223 transitions, 584 flow [2023-11-29 05:05:30,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:05:30,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:05:30,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1120 transitions. [2023-11-29 05:05:30,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7466666666666667 [2023-11-29 05:05:30,991 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1120 transitions. [2023-11-29 05:05:30,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1120 transitions. [2023-11-29 05:05:30,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:05:30,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1120 transitions. [2023-11-29 05:05:30,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 186.66666666666666) internal successors, (1120), 6 states have internal predecessors, (1120), 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) [2023-11-29 05:05:31,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 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) [2023-11-29 05:05:31,004 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 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) [2023-11-29 05:05:31,004 INFO L175 Difference]: Start difference. First operand has 229 places, 224 transitions, 460 flow. Second operand 6 states and 1120 transitions. [2023-11-29 05:05:31,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 223 transitions, 584 flow [2023-11-29 05:05:31,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 223 transitions, 574 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 05:05:31,013 INFO L231 Difference]: Finished difference. Result has 228 places, 223 transitions, 458 flow [2023-11-29 05:05:31,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=458, PETRI_PLACES=228, PETRI_TRANSITIONS=223} [2023-11-29 05:05:31,015 INFO L281 CegarLoopForPetriNet]: 232 programPoint places, -4 predicate places. [2023-11-29 05:05:31,015 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 223 transitions, 458 flow [2023-11-29 05:05:31,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 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) [2023-11-29 05:05:31,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:05:31,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:05:31,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:05:31,018 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 05:05:31,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:05:31,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1840435526, now seen corresponding path program 1 times [2023-11-29 05:05:31,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:05:31,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610841036] [2023-11-29 05:05:31,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:05:31,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:05:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:05:31,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:05:31,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:05:31,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610841036] [2023-11-29 05:05:31,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610841036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:05:31,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:05:31,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:05:31,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006877259] [2023-11-29 05:05:31,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:05:31,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:05:31,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:05:31,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:05:31,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:05:32,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 250 [2023-11-29 05:05:32,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 223 transitions, 458 flow. Second operand has 6 states, 6 states have (on average 205.66666666666666) internal successors, (1234), 6 states have internal predecessors, (1234), 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) [2023-11-29 05:05:32,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:05:32,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 250 [2023-11-29 05:05:32,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:05:32,599 INFO L124 PetriNetUnfolderBase]: 311/2251 cut-off events. [2023-11-29 05:05:32,599 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 05:05:32,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2850 conditions, 2251 events. 311/2251 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 16123 event pairs, 64 based on Foata normal form. 0/2012 useless extension candidates. Maximal degree in co-relation 2798. Up to 452 conditions per place. [2023-11-29 05:05:32,617 INFO L140 encePairwiseOnDemand]: 229/250 looper letters, 39 selfloop transitions, 43 changer transitions 0/268 dead transitions. [2023-11-29 05:05:32,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 268 transitions, 712 flow [2023-11-29 05:05:32,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:05:32,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:05:32,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1302 transitions. [2023-11-29 05:05:32,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.868 [2023-11-29 05:05:32,623 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1302 transitions. [2023-11-29 05:05:32,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1302 transitions. [2023-11-29 05:05:32,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:05:32,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1302 transitions. [2023-11-29 05:05:32,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 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) [2023-11-29 05:05:32,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 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) [2023-11-29 05:05:32,636 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 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) [2023-11-29 05:05:32,636 INFO L175 Difference]: Start difference. First operand has 228 places, 223 transitions, 458 flow. Second operand 6 states and 1302 transitions. [2023-11-29 05:05:32,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 268 transitions, 712 flow [2023-11-29 05:05:32,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 268 transitions, 702 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 05:05:32,645 INFO L231 Difference]: Finished difference. Result has 233 places, 265 transitions, 744 flow [2023-11-29 05:05:32,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=744, PETRI_PLACES=233, PETRI_TRANSITIONS=265} [2023-11-29 05:05:32,647 INFO L281 CegarLoopForPetriNet]: 232 programPoint places, 1 predicate places. [2023-11-29 05:05:32,647 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 265 transitions, 744 flow [2023-11-29 05:05:32,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 205.66666666666666) internal successors, (1234), 6 states have internal predecessors, (1234), 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) [2023-11-29 05:05:32,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:05:32,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:05:32,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:05:32,649 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 05:05:32,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:05:32,650 INFO L85 PathProgramCache]: Analyzing trace with hash 828852886, now seen corresponding path program 1 times [2023-11-29 05:05:32,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:05:32,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545416532] [2023-11-29 05:05:32,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:05:32,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:05:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:05:32,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:05:32,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:05:32,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545416532] [2023-11-29 05:05:32,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545416532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:05:32,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:05:32,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:05:32,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647891212] [2023-11-29 05:05:32,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:05:32,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:05:32,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:05:32,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:05:32,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:05:32,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 250 [2023-11-29 05:05:32,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 265 transitions, 744 flow. Second operand has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 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) [2023-11-29 05:05:32,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:05:32,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 250 [2023-11-29 05:05:32,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:05:33,225 INFO L124 PetriNetUnfolderBase]: 297/2502 cut-off events. [2023-11-29 05:05:33,225 INFO L125 PetriNetUnfolderBase]: For 238/272 co-relation queries the response was YES. [2023-11-29 05:05:33,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3597 conditions, 2502 events. 297/2502 cut-off events. For 238/272 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 18184 event pairs, 16 based on Foata normal form. 1/2286 useless extension candidates. Maximal degree in co-relation 3545. Up to 342 conditions per place. [2023-11-29 05:05:33,250 INFO L140 encePairwiseOnDemand]: 247/250 looper letters, 3 selfloop transitions, 2 changer transitions 0/266 dead transitions. [2023-11-29 05:05:33,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 266 transitions, 756 flow [2023-11-29 05:05:33,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:05:33,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:05:33,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 714 transitions. [2023-11-29 05:05:33,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.952 [2023-11-29 05:05:33,254 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 714 transitions. [2023-11-29 05:05:33,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 714 transitions. [2023-11-29 05:05:33,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:05:33,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 714 transitions. [2023-11-29 05:05:33,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 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) [2023-11-29 05:05:33,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 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) [2023-11-29 05:05:33,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 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) [2023-11-29 05:05:33,261 INFO L175 Difference]: Start difference. First operand has 233 places, 265 transitions, 744 flow. Second operand 3 states and 714 transitions. [2023-11-29 05:05:33,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 266 transitions, 756 flow [2023-11-29 05:05:33,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 266 transitions, 756 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:05:33,274 INFO L231 Difference]: Finished difference. Result has 236 places, 266 transitions, 756 flow [2023-11-29 05:05:33,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=756, PETRI_PLACES=236, PETRI_TRANSITIONS=266} [2023-11-29 05:05:33,276 INFO L281 CegarLoopForPetriNet]: 232 programPoint places, 4 predicate places. [2023-11-29 05:05:33,276 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 266 transitions, 756 flow [2023-11-29 05:05:33,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 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) [2023-11-29 05:05:33,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:05:33,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:05:33,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:05:33,278 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 05:05:33,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:05:33,278 INFO L85 PathProgramCache]: Analyzing trace with hash -408189695, now seen corresponding path program 1 times [2023-11-29 05:05:33,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:05:33,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88223519] [2023-11-29 05:05:33,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:05:33,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:05:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:05:33,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:05:33,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:05:33,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88223519] [2023-11-29 05:05:33,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88223519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:05:33,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:05:33,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:05:33,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74081587] [2023-11-29 05:05:33,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:05:33,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:05:33,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:05:33,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:05:33,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:05:34,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 250 [2023-11-29 05:05:34,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 266 transitions, 756 flow. Second operand has 6 states, 6 states have (on average 199.66666666666666) internal successors, (1198), 6 states have internal predecessors, (1198), 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) [2023-11-29 05:05:34,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:05:34,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 250 [2023-11-29 05:05:34,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:05:35,074 INFO L124 PetriNetUnfolderBase]: 775/5041 cut-off events. [2023-11-29 05:05:35,075 INFO L125 PetriNetUnfolderBase]: For 994/1168 co-relation queries the response was YES. [2023-11-29 05:05:35,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8266 conditions, 5041 events. 775/5041 cut-off events. For 994/1168 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 44176 event pairs, 128 based on Foata normal form. 68/4758 useless extension candidates. Maximal degree in co-relation 8204. Up to 1061 conditions per place. [2023-11-29 05:05:35,120 INFO L140 encePairwiseOnDemand]: 226/250 looper letters, 81 selfloop transitions, 45 changer transitions 0/316 dead transitions. [2023-11-29 05:05:35,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 316 transitions, 1168 flow [2023-11-29 05:05:35,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:05:35,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:05:35,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1266 transitions. [2023-11-29 05:05:35,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.844 [2023-11-29 05:05:35,126 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1266 transitions. [2023-11-29 05:05:35,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1266 transitions. [2023-11-29 05:05:35,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:05:35,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1266 transitions. [2023-11-29 05:05:35,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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) [2023-11-29 05:05:35,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 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) [2023-11-29 05:05:35,136 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 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) [2023-11-29 05:05:35,136 INFO L175 Difference]: Start difference. First operand has 236 places, 266 transitions, 756 flow. Second operand 6 states and 1266 transitions. [2023-11-29 05:05:35,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 316 transitions, 1168 flow [2023-11-29 05:05:35,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 316 transitions, 1166 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:05:35,148 INFO L231 Difference]: Finished difference. Result has 245 places, 310 transitions, 1146 flow [2023-11-29 05:05:35,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1146, PETRI_PLACES=245, PETRI_TRANSITIONS=310} [2023-11-29 05:05:35,150 INFO L281 CegarLoopForPetriNet]: 232 programPoint places, 13 predicate places. [2023-11-29 05:05:35,150 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 310 transitions, 1146 flow [2023-11-29 05:05:35,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 199.66666666666666) internal successors, (1198), 6 states have internal predecessors, (1198), 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) [2023-11-29 05:05:35,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:05:35,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:05:35,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:05:35,151 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 05:05:35,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:05:35,152 INFO L85 PathProgramCache]: Analyzing trace with hash -121393238, now seen corresponding path program 1 times [2023-11-29 05:05:35,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:05:35,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735202005] [2023-11-29 05:05:35,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:05:35,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:05:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:05:35,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:05:35,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:05:35,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735202005] [2023-11-29 05:05:35,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735202005] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:05:35,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:05:35,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:05:35,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272703297] [2023-11-29 05:05:35,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:05:35,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:05:35,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:05:35,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:05:35,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:05:35,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 250 [2023-11-29 05:05:35,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 310 transitions, 1146 flow. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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) [2023-11-29 05:05:35,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:05:35,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 250 [2023-11-29 05:05:35,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:05:36,368 INFO L124 PetriNetUnfolderBase]: 1125/8232 cut-off events. [2023-11-29 05:05:36,368 INFO L125 PetriNetUnfolderBase]: For 2378/2616 co-relation queries the response was YES. [2023-11-29 05:05:36,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13976 conditions, 8232 events. 1125/8232 cut-off events. For 2378/2616 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 80041 event pairs, 94 based on Foata normal form. 43/7736 useless extension candidates. Maximal degree in co-relation 13918. Up to 808 conditions per place. [2023-11-29 05:05:36,414 INFO L140 encePairwiseOnDemand]: 247/250 looper letters, 6 selfloop transitions, 2 changer transitions 0/311 dead transitions. [2023-11-29 05:05:36,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 311 transitions, 1164 flow [2023-11-29 05:05:36,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:05:36,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:05:36,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 708 transitions. [2023-11-29 05:05:36,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.944 [2023-11-29 05:05:36,417 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 708 transitions. [2023-11-29 05:05:36,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 708 transitions. [2023-11-29 05:05:36,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:05:36,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 708 transitions. [2023-11-29 05:05:36,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 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) [2023-11-29 05:05:36,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 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) [2023-11-29 05:05:36,422 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 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) [2023-11-29 05:05:36,422 INFO L175 Difference]: Start difference. First operand has 245 places, 310 transitions, 1146 flow. Second operand 3 states and 708 transitions. [2023-11-29 05:05:36,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 311 transitions, 1164 flow [2023-11-29 05:05:36,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 311 transitions, 1164 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:05:36,435 INFO L231 Difference]: Finished difference. Result has 248 places, 311 transitions, 1158 flow [2023-11-29 05:05:36,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=1146, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1158, PETRI_PLACES=248, PETRI_TRANSITIONS=311} [2023-11-29 05:05:36,437 INFO L281 CegarLoopForPetriNet]: 232 programPoint places, 16 predicate places. [2023-11-29 05:05:36,437 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 311 transitions, 1158 flow [2023-11-29 05:05:36,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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) [2023-11-29 05:05:36,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:05:36,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:05:36,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:05:36,438 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 05:05:36,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:05:36,439 INFO L85 PathProgramCache]: Analyzing trace with hash -76678078, now seen corresponding path program 1 times [2023-11-29 05:05:36,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:05:36,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363839558] [2023-11-29 05:05:36,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:05:36,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:05:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:05:36,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:05:36,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:05:36,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363839558] [2023-11-29 05:05:36,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363839558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:05:36,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:05:36,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:05:36,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301549082] [2023-11-29 05:05:36,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:05:36,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:05:36,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:05:36,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:05:36,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:05:37,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 250 [2023-11-29 05:05:37,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 311 transitions, 1158 flow. Second operand has 6 states, 6 states have (on average 210.83333333333334) internal successors, (1265), 6 states have internal predecessors, (1265), 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) [2023-11-29 05:05:37,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:05:37,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 250 [2023-11-29 05:05:37,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:05:39,101 INFO L124 PetriNetUnfolderBase]: 1981/11486 cut-off events. [2023-11-29 05:05:39,101 INFO L125 PetriNetUnfolderBase]: For 6937/7789 co-relation queries the response was YES. [2023-11-29 05:05:39,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22639 conditions, 11486 events. 1981/11486 cut-off events. For 6937/7789 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 115361 event pairs, 354 based on Foata normal form. 205/11022 useless extension candidates. Maximal degree in co-relation 22571. Up to 2658 conditions per place. [2023-11-29 05:05:39,167 INFO L140 encePairwiseOnDemand]: 235/250 looper letters, 94 selfloop transitions, 78 changer transitions 0/388 dead transitions. [2023-11-29 05:05:39,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 388 transitions, 1960 flow [2023-11-29 05:05:39,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:05:39,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:05:39,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1318 transitions. [2023-11-29 05:05:39,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8786666666666667 [2023-11-29 05:05:39,171 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1318 transitions. [2023-11-29 05:05:39,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1318 transitions. [2023-11-29 05:05:39,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:05:39,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1318 transitions. [2023-11-29 05:05:39,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 219.66666666666666) internal successors, (1318), 6 states have internal predecessors, (1318), 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) [2023-11-29 05:05:39,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 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) [2023-11-29 05:05:39,178 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 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) [2023-11-29 05:05:39,178 INFO L175 Difference]: Start difference. First operand has 248 places, 311 transitions, 1158 flow. Second operand 6 states and 1318 transitions. [2023-11-29 05:05:39,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 388 transitions, 1960 flow [2023-11-29 05:05:39,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 388 transitions, 1958 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:05:39,250 INFO L231 Difference]: Finished difference. Result has 257 places, 388 transitions, 1974 flow [2023-11-29 05:05:39,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1974, PETRI_PLACES=257, PETRI_TRANSITIONS=388} [2023-11-29 05:05:39,252 INFO L281 CegarLoopForPetriNet]: 232 programPoint places, 25 predicate places. [2023-11-29 05:05:39,252 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 388 transitions, 1974 flow [2023-11-29 05:05:39,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 210.83333333333334) internal successors, (1265), 6 states have internal predecessors, (1265), 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) [2023-11-29 05:05:39,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:05:39,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:05:39,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:05:39,254 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 05:05:39,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:05:39,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1459036380, now seen corresponding path program 1 times [2023-11-29 05:05:39,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:05:39,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777002378] [2023-11-29 05:05:39,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:05:39,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:05:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:05:39,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:05:39,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:05:39,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777002378] [2023-11-29 05:05:39,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777002378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:05:39,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:05:39,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:05:39,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233144687] [2023-11-29 05:05:39,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:05:39,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:05:39,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:05:39,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:05:39,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:05:40,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 250 [2023-11-29 05:05:40,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 388 transitions, 1974 flow. Second operand has 6 states, 6 states have (on average 216.66666666666666) internal successors, (1300), 6 states have internal predecessors, (1300), 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) [2023-11-29 05:05:40,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:05:40,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 250 [2023-11-29 05:05:40,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:05:42,179 INFO L124 PetriNetUnfolderBase]: 2217/12771 cut-off events. [2023-11-29 05:05:42,179 INFO L125 PetriNetUnfolderBase]: For 12457/14109 co-relation queries the response was YES. [2023-11-29 05:05:42,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27023 conditions, 12771 events. 2217/12771 cut-off events. For 12457/14109 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 132387 event pairs, 240 based on Foata normal form. 318/12419 useless extension candidates. Maximal degree in co-relation 26951. Up to 2014 conditions per place. [2023-11-29 05:05:42,256 INFO L140 encePairwiseOnDemand]: 239/250 looper letters, 103 selfloop transitions, 66 changer transitions 0/453 dead transitions. [2023-11-29 05:05:42,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 453 transitions, 2744 flow [2023-11-29 05:05:42,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:05:42,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:05:42,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1336 transitions. [2023-11-29 05:05:42,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8906666666666667 [2023-11-29 05:05:42,261 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1336 transitions. [2023-11-29 05:05:42,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1336 transitions. [2023-11-29 05:05:42,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:05:42,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1336 transitions. [2023-11-29 05:05:42,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 222.66666666666666) internal successors, (1336), 6 states have internal predecessors, (1336), 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) [2023-11-29 05:05:42,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 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) [2023-11-29 05:05:42,268 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 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) [2023-11-29 05:05:42,269 INFO L175 Difference]: Start difference. First operand has 257 places, 388 transitions, 1974 flow. Second operand 6 states and 1336 transitions. [2023-11-29 05:05:42,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 453 transitions, 2744 flow [2023-11-29 05:05:42,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 453 transitions, 2744 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:05:42,303 INFO L231 Difference]: Finished difference. Result has 267 places, 450 transitions, 2736 flow [2023-11-29 05:05:42,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=1974, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2736, PETRI_PLACES=267, PETRI_TRANSITIONS=450} [2023-11-29 05:05:42,305 INFO L281 CegarLoopForPetriNet]: 232 programPoint places, 35 predicate places. [2023-11-29 05:05:42,305 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 450 transitions, 2736 flow [2023-11-29 05:05:42,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 216.66666666666666) internal successors, (1300), 6 states have internal predecessors, (1300), 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) [2023-11-29 05:05:42,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:05:42,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:05:42,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 05:05:42,307 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reader_nowait_fnErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 05:05:42,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:05:42,307 INFO L85 PathProgramCache]: Analyzing trace with hash 763267157, now seen corresponding path program 1 times [2023-11-29 05:05:42,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:05:42,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033897745] [2023-11-29 05:05:42,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:05:42,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:05:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:05:42,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:05:42,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:05:42,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033897745] [2023-11-29 05:05:42,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033897745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:05:42,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:05:42,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:05:42,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342270071] [2023-11-29 05:05:42,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:05:42,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:05:42,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:05:42,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:05:42,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:05:43,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 250 [2023-11-29 05:05:43,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 450 transitions, 2736 flow. Second operand has 6 states, 6 states have (on average 175.16666666666666) internal successors, (1051), 6 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:05:43,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:05:43,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 250 [2023-11-29 05:05:43,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:05:49,081 INFO L124 PetriNetUnfolderBase]: 9888/31256 cut-off events. [2023-11-29 05:05:49,082 INFO L125 PetriNetUnfolderBase]: For 35398/35970 co-relation queries the response was YES. [2023-11-29 05:05:49,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82987 conditions, 31256 events. 9888/31256 cut-off events. For 35398/35970 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 324173 event pairs, 4550 based on Foata normal form. 110/29623 useless extension candidates. Maximal degree in co-relation 82910. Up to 18151 conditions per place. [2023-11-29 05:05:49,237 INFO L140 encePairwiseOnDemand]: 215/250 looper letters, 264 selfloop transitions, 172 changer transitions 0/597 dead transitions. [2023-11-29 05:05:49,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 597 transitions, 4376 flow [2023-11-29 05:05:49,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:05:49,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:05:49,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1208 transitions. [2023-11-29 05:05:49,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8053333333333333 [2023-11-29 05:05:49,242 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1208 transitions. [2023-11-29 05:05:49,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1208 transitions. [2023-11-29 05:05:49,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:05:49,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1208 transitions. [2023-11-29 05:05:49,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 201.33333333333334) internal successors, (1208), 6 states have internal predecessors, (1208), 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) [2023-11-29 05:05:49,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 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) [2023-11-29 05:05:49,250 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 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) [2023-11-29 05:05:49,250 INFO L175 Difference]: Start difference. First operand has 267 places, 450 transitions, 2736 flow. Second operand 6 states and 1208 transitions. [2023-11-29 05:05:49,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 597 transitions, 4376 flow [2023-11-29 05:05:49,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 597 transitions, 4376 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:05:49,380 INFO L231 Difference]: Finished difference. Result has 277 places, 597 transitions, 4308 flow [2023-11-29 05:05:49,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=2736, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4308, PETRI_PLACES=277, PETRI_TRANSITIONS=597} [2023-11-29 05:05:49,381 INFO L281 CegarLoopForPetriNet]: 232 programPoint places, 45 predicate places. [2023-11-29 05:05:49,381 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 597 transitions, 4308 flow [2023-11-29 05:05:49,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 175.16666666666666) internal successors, (1051), 6 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:05:49,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:05:49,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:05:49,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 05:05:49,383 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 05:05:49,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:05:49,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1196059431, now seen corresponding path program 1 times [2023-11-29 05:05:49,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:05:49,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612314888] [2023-11-29 05:05:49,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:05:49,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:05:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:05:49,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:05:49,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:05:49,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612314888] [2023-11-29 05:05:49,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612314888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:05:49,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:05:49,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:05:49,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253473976] [2023-11-29 05:05:49,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:05:49,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:05:49,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:05:49,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:05:49,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:05:50,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 250 [2023-11-29 05:05:50,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 597 transitions, 4308 flow. Second operand has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 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) [2023-11-29 05:05:50,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:05:50,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 250 [2023-11-29 05:05:50,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:05:57,501 INFO L124 PetriNetUnfolderBase]: 10449/33106 cut-off events. [2023-11-29 05:05:57,501 INFO L125 PetriNetUnfolderBase]: For 54202/54755 co-relation queries the response was YES. [2023-11-29 05:05:57,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99185 conditions, 33106 events. 10449/33106 cut-off events. For 54202/54755 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 347122 event pairs, 4308 based on Foata normal form. 28/31491 useless extension candidates. Maximal degree in co-relation 99103. Up to 18562 conditions per place. [2023-11-29 05:05:57,785 INFO L140 encePairwiseOnDemand]: 219/250 looper letters, 392 selfloop transitions, 167 changer transitions 0/724 dead transitions. [2023-11-29 05:05:57,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 724 transitions, 6092 flow [2023-11-29 05:05:57,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:05:57,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:05:57,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1192 transitions. [2023-11-29 05:05:57,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7946666666666666 [2023-11-29 05:05:57,789 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1192 transitions. [2023-11-29 05:05:57,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1192 transitions. [2023-11-29 05:05:57,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:05:57,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1192 transitions. [2023-11-29 05:05:57,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 198.66666666666666) internal successors, (1192), 6 states have internal predecessors, (1192), 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) [2023-11-29 05:05:57,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 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) [2023-11-29 05:05:57,796 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 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) [2023-11-29 05:05:57,797 INFO L175 Difference]: Start difference. First operand has 277 places, 597 transitions, 4308 flow. Second operand 6 states and 1192 transitions. [2023-11-29 05:05:57,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 724 transitions, 6092 flow [2023-11-29 05:05:57,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 724 transitions, 5860 flow, removed 116 selfloop flow, removed 0 redundant places. [2023-11-29 05:05:57,988 INFO L231 Difference]: Finished difference. Result has 287 places, 724 transitions, 5516 flow [2023-11-29 05:05:57,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=4088, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5516, PETRI_PLACES=287, PETRI_TRANSITIONS=724} [2023-11-29 05:05:57,990 INFO L281 CegarLoopForPetriNet]: 232 programPoint places, 55 predicate places. [2023-11-29 05:05:57,991 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 724 transitions, 5516 flow [2023-11-29 05:05:57,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 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) [2023-11-29 05:05:57,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:05:57,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:05:57,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 05:05:57,992 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 05:05:57,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:05:57,992 INFO L85 PathProgramCache]: Analyzing trace with hash 328860583, now seen corresponding path program 1 times [2023-11-29 05:05:57,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:05:57,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511247438] [2023-11-29 05:05:57,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:05:57,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:05:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:06:02,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:06:02,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:06:02,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511247438] [2023-11-29 05:06:02,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511247438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:06:02,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:06:02,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-29 05:06:02,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529043548] [2023-11-29 05:06:02,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:06:02,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 05:06:02,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:06:02,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 05:06:02,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:06:05,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 250 [2023-11-29 05:06:05,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 724 transitions, 5516 flow. Second operand has 20 states, 20 states have (on average 175.65) internal successors, (3513), 20 states have internal predecessors, (3513), 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) [2023-11-29 05:06:05,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:06:05,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 250 [2023-11-29 05:06:05,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:06:22,396 INFO L124 PetriNetUnfolderBase]: 17095/61545 cut-off events. [2023-11-29 05:06:22,396 INFO L125 PetriNetUnfolderBase]: For 141321/145369 co-relation queries the response was YES. [2023-11-29 05:06:22,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193900 conditions, 61545 events. 17095/61545 cut-off events. For 141321/145369 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 741695 event pairs, 1334 based on Foata normal form. 642/60261 useless extension candidates. Maximal degree in co-relation 193811. Up to 10415 conditions per place. [2023-11-29 05:06:22,896 INFO L140 encePairwiseOnDemand]: 215/250 looper letters, 1238 selfloop transitions, 223 changer transitions 0/1763 dead transitions. [2023-11-29 05:06:22,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 1763 transitions, 17456 flow [2023-11-29 05:06:22,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 05:06:22,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 05:06:22,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4070 transitions. [2023-11-29 05:06:22,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7752380952380953 [2023-11-29 05:06:22,906 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4070 transitions. [2023-11-29 05:06:22,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4070 transitions. [2023-11-29 05:06:22,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:06:22,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4070 transitions. [2023-11-29 05:06:22,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 193.8095238095238) internal successors, (4070), 21 states have internal predecessors, (4070), 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) [2023-11-29 05:06:22,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 250.0) internal successors, (5500), 22 states have internal predecessors, (5500), 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) [2023-11-29 05:06:22,929 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 250.0) internal successors, (5500), 22 states have internal predecessors, (5500), 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) [2023-11-29 05:06:22,929 INFO L175 Difference]: Start difference. First operand has 287 places, 724 transitions, 5516 flow. Second operand 21 states and 4070 transitions. [2023-11-29 05:06:22,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 1763 transitions, 17456 flow [2023-11-29 05:06:23,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 1763 transitions, 17192 flow, removed 132 selfloop flow, removed 0 redundant places. [2023-11-29 05:06:23,436 INFO L231 Difference]: Finished difference. Result has 321 places, 945 transitions, 8863 flow [2023-11-29 05:06:23,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=5360, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=576, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=8863, PETRI_PLACES=321, PETRI_TRANSITIONS=945} [2023-11-29 05:06:23,438 INFO L281 CegarLoopForPetriNet]: 232 programPoint places, 89 predicate places. [2023-11-29 05:06:23,438 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 945 transitions, 8863 flow [2023-11-29 05:06:23,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 175.65) internal successors, (3513), 20 states have internal predecessors, (3513), 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) [2023-11-29 05:06:23,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:06:23,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:06:23,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 05:06:23,439 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 05:06:23,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:06:23,439 INFO L85 PathProgramCache]: Analyzing trace with hash -694218251, now seen corresponding path program 2 times [2023-11-29 05:06:23,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:06:23,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263617896] [2023-11-29 05:06:23,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:06:23,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:06:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:06:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:06:26,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:06:26,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263617896] [2023-11-29 05:06:26,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263617896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:06:26,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:06:26,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-29 05:06:26,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318736582] [2023-11-29 05:06:26,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:06:26,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 05:06:26,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:06:26,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 05:06:26,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:06:30,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 250 [2023-11-29 05:06:30,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 945 transitions, 8863 flow. Second operand has 20 states, 20 states have (on average 175.65) internal successors, (3513), 20 states have internal predecessors, (3513), 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) [2023-11-29 05:06:30,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:06:30,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 250 [2023-11-29 05:06:30,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:07:01,050 INFO L124 PetriNetUnfolderBase]: 28092/98167 cut-off events. [2023-11-29 05:07:01,050 INFO L125 PetriNetUnfolderBase]: For 349509/357973 co-relation queries the response was YES. [2023-11-29 05:07:02,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347991 conditions, 98167 events. 28092/98167 cut-off events. For 349509/357973 co-relation queries the response was YES. Maximal size of possible extension queue 1048. Compared 1274764 event pairs, 3704 based on Foata normal form. 1681/96521 useless extension candidates. Maximal degree in co-relation 347885. Up to 15537 conditions per place. [2023-11-29 05:07:02,570 INFO L140 encePairwiseOnDemand]: 209/250 looper letters, 1183 selfloop transitions, 339 changer transitions 0/1824 dead transitions. [2023-11-29 05:07:02,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 1824 transitions, 20713 flow [2023-11-29 05:07:02,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 05:07:02,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 05:07:02,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3303 transitions. [2023-11-29 05:07:02,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7771764705882352 [2023-11-29 05:07:02,579 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3303 transitions. [2023-11-29 05:07:02,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3303 transitions. [2023-11-29 05:07:02,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:07:02,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3303 transitions. [2023-11-29 05:07:02,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 194.2941176470588) internal successors, (3303), 17 states have internal predecessors, (3303), 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) [2023-11-29 05:07:02,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 250.0) internal successors, (4500), 18 states have internal predecessors, (4500), 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) [2023-11-29 05:07:02,595 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 250.0) internal successors, (4500), 18 states have internal predecessors, (4500), 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) [2023-11-29 05:07:02,595 INFO L175 Difference]: Start difference. First operand has 321 places, 945 transitions, 8863 flow. Second operand 17 states and 3303 transitions. [2023-11-29 05:07:02,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 1824 transitions, 20713 flow [2023-11-29 05:07:03,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 1824 transitions, 20665 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-11-29 05:07:03,887 INFO L231 Difference]: Finished difference. Result has 346 places, 1170 transitions, 13732 flow [2023-11-29 05:07:03,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=8824, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=945, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=13732, PETRI_PLACES=346, PETRI_TRANSITIONS=1170} [2023-11-29 05:07:03,889 INFO L281 CegarLoopForPetriNet]: 232 programPoint places, 114 predicate places. [2023-11-29 05:07:03,889 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 1170 transitions, 13732 flow [2023-11-29 05:07:03,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 175.65) internal successors, (3513), 20 states have internal predecessors, (3513), 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) [2023-11-29 05:07:03,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:07:03,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:07:03,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 05:07:03,891 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 05:07:03,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:03,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1344058405, now seen corresponding path program 3 times [2023-11-29 05:07:03,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:03,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741027768] [2023-11-29 05:07:03,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:03,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:04,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:07:04,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:04,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741027768] [2023-11-29 05:07:04,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741027768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:07:04,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:07:04,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-29 05:07:04,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216818498] [2023-11-29 05:07:04,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:04,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:07:04,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:04,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:07:04,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:07:08,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 250 [2023-11-29 05:07:08,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 1170 transitions, 13732 flow. Second operand has 18 states, 18 states have (on average 179.61111111111111) internal successors, (3233), 18 states have internal predecessors, (3233), 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) [2023-11-29 05:07:08,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:07:08,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 250 [2023-11-29 05:07:08,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:08:10,683 INFO L124 PetriNetUnfolderBase]: 44869/170722 cut-off events. [2023-11-29 05:08:10,683 INFO L125 PetriNetUnfolderBase]: For 866075/887058 co-relation queries the response was YES. [2023-11-29 05:08:12,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640322 conditions, 170722 events. 44869/170722 cut-off events. For 866075/887058 co-relation queries the response was YES. Maximal size of possible extension queue 1948. Compared 2463561 event pairs, 4975 based on Foata normal form. 2050/167012 useless extension candidates. Maximal degree in co-relation 640203. Up to 26289 conditions per place. [2023-11-29 05:08:13,600 INFO L140 encePairwiseOnDemand]: 220/250 looper letters, 2252 selfloop transitions, 208 changer transitions 0/2788 dead transitions. [2023-11-29 05:08:13,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 2788 transitions, 37829 flow [2023-11-29 05:08:13,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 05:08:13,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-29 05:08:13,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3953 transitions. [2023-11-29 05:08:13,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7906 [2023-11-29 05:08:13,611 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3953 transitions. [2023-11-29 05:08:13,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3953 transitions. [2023-11-29 05:08:13,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:08:13,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3953 transitions. [2023-11-29 05:08:13,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 197.65) internal successors, (3953), 20 states have internal predecessors, (3953), 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) [2023-11-29 05:08:13,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 250.0) internal successors, (5250), 21 states have internal predecessors, (5250), 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) [2023-11-29 05:08:13,630 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 250.0) internal successors, (5250), 21 states have internal predecessors, (5250), 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) [2023-11-29 05:08:13,630 INFO L175 Difference]: Start difference. First operand has 346 places, 1170 transitions, 13732 flow. Second operand 20 states and 3953 transitions. [2023-11-29 05:08:13,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 2788 transitions, 37829 flow [2023-11-29 05:08:17,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 2788 transitions, 37554 flow, removed 135 selfloop flow, removed 3 redundant places. [2023-11-29 05:08:17,737 INFO L231 Difference]: Finished difference. Result has 376 places, 1370 transitions, 17851 flow [2023-11-29 05:08:17,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=13485, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1018, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=17851, PETRI_PLACES=376, PETRI_TRANSITIONS=1370} [2023-11-29 05:08:17,739 INFO L281 CegarLoopForPetriNet]: 232 programPoint places, 144 predicate places. [2023-11-29 05:08:17,739 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 1370 transitions, 17851 flow [2023-11-29 05:08:17,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 179.61111111111111) internal successors, (3233), 18 states have internal predecessors, (3233), 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) [2023-11-29 05:08:17,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:08:17,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:08:17,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 05:08:17,740 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 05:08:17,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:17,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1879336167, now seen corresponding path program 4 times [2023-11-29 05:08:17,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:17,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409565234] [2023-11-29 05:08:17,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:17,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:20,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:08:20,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:20,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409565234] [2023-11-29 05:08:20,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409565234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:20,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:20,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-29 05:08:20,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977682927] [2023-11-29 05:08:20,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:20,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 05:08:20,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:20,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 05:08:20,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:08:25,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 250 [2023-11-29 05:08:25,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 1370 transitions, 17851 flow. Second operand has 19 states, 19 states have (on average 176.68421052631578) internal successors, (3357), 19 states have internal predecessors, (3357), 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) [2023-11-29 05:08:25,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:08:25,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 250 [2023-11-29 05:08:25,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:09:34,037 INFO L124 PetriNetUnfolderBase]: 52195/179560 cut-off events. [2023-11-29 05:09:34,038 INFO L125 PetriNetUnfolderBase]: For 1134646/1151368 co-relation queries the response was YES. [2023-11-29 05:09:36,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738210 conditions, 179560 events. 52195/179560 cut-off events. For 1134646/1151368 co-relation queries the response was YES. Maximal size of possible extension queue 2060. Compared 2543612 event pairs, 3992 based on Foata normal form. 4442/178393 useless extension candidates. Maximal degree in co-relation 738077. Up to 32884 conditions per place. [2023-11-29 05:09:37,364 INFO L140 encePairwiseOnDemand]: 209/250 looper letters, 1410 selfloop transitions, 552 changer transitions 0/2271 dead transitions. [2023-11-29 05:09:37,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 2271 transitions, 32182 flow [2023-11-29 05:09:37,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 05:09:37,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-29 05:09:37,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3852 transitions. [2023-11-29 05:09:37,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7704 [2023-11-29 05:09:37,368 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3852 transitions. [2023-11-29 05:09:37,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3852 transitions. [2023-11-29 05:09:37,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:09:37,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3852 transitions. [2023-11-29 05:09:37,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 192.6) internal successors, (3852), 20 states have internal predecessors, (3852), 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) [2023-11-29 05:09:37,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 250.0) internal successors, (5250), 21 states have internal predecessors, (5250), 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) [2023-11-29 05:09:37,378 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 250.0) internal successors, (5250), 21 states have internal predecessors, (5250), 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) [2023-11-29 05:09:37,378 INFO L175 Difference]: Start difference. First operand has 376 places, 1370 transitions, 17851 flow. Second operand 20 states and 3852 transitions. [2023-11-29 05:09:37,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 2271 transitions, 32182 flow [2023-11-29 05:09:43,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 2271 transitions, 31664 flow, removed 251 selfloop flow, removed 4 redundant places. [2023-11-29 05:09:43,190 INFO L231 Difference]: Finished difference. Result has 402 places, 1546 transitions, 22944 flow [2023-11-29 05:09:43,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=17387, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=381, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=874, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=22944, PETRI_PLACES=402, PETRI_TRANSITIONS=1546} [2023-11-29 05:09:43,192 INFO L281 CegarLoopForPetriNet]: 232 programPoint places, 170 predicate places. [2023-11-29 05:09:43,192 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 1546 transitions, 22944 flow [2023-11-29 05:09:43,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 176.68421052631578) internal successors, (3357), 19 states have internal predecessors, (3357), 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) [2023-11-29 05:09:43,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:09:43,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:09:43,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 05:09:43,193 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 05:09:43,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:43,193 INFO L85 PathProgramCache]: Analyzing trace with hash -445431977, now seen corresponding path program 5 times [2023-11-29 05:09:43,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:09:43,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773232936] [2023-11-29 05:09:43,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:43,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:09:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:46,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:46,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:09:46,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773232936] [2023-11-29 05:09:46,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773232936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:09:46,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:09:46,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-29 05:09:46,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797090367] [2023-11-29 05:09:46,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:09:46,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 05:09:46,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:09:46,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 05:09:46,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:09:49,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 250 [2023-11-29 05:09:49,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 1546 transitions, 22944 flow. Second operand has 20 states, 20 states have (on average 175.65) internal successors, (3513), 20 states have internal predecessors, (3513), 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) [2023-11-29 05:09:49,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:09:49,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 250 [2023-11-29 05:09:49,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:11:05,396 INFO L124 PetriNetUnfolderBase]: 57774/191914 cut-off events. [2023-11-29 05:11:05,397 INFO L125 PetriNetUnfolderBase]: For 1584040/1614776 co-relation queries the response was YES. [2023-11-29 05:11:08,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854316 conditions, 191914 events. 57774/191914 cut-off events. For 1584040/1614776 co-relation queries the response was YES. Maximal size of possible extension queue 2205. Compared 2708454 event pairs, 3420 based on Foata normal form. 6460/192548 useless extension candidates. Maximal degree in co-relation 854172. Up to 45020 conditions per place. [2023-11-29 05:11:09,114 INFO L140 encePairwiseOnDemand]: 209/250 looper letters, 1049 selfloop transitions, 765 changer transitions 0/2116 dead transitions. [2023-11-29 05:11:09,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 2116 transitions, 33230 flow [2023-11-29 05:11:09,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 05:11:09,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 05:11:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3254 transitions. [2023-11-29 05:11:09,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7656470588235295 [2023-11-29 05:11:09,118 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3254 transitions. [2023-11-29 05:11:09,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3254 transitions. [2023-11-29 05:11:09,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:11:09,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3254 transitions. [2023-11-29 05:11:09,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 191.41176470588235) internal successors, (3254), 17 states have internal predecessors, (3254), 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) [2023-11-29 05:11:09,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 250.0) internal successors, (4500), 18 states have internal predecessors, (4500), 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) [2023-11-29 05:11:09,126 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 250.0) internal successors, (4500), 18 states have internal predecessors, (4500), 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) [2023-11-29 05:11:09,126 INFO L175 Difference]: Start difference. First operand has 402 places, 1546 transitions, 22944 flow. Second operand 17 states and 3254 transitions. [2023-11-29 05:11:09,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 2116 transitions, 33230 flow [2023-11-29 05:11:17,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 2116 transitions, 32533 flow, removed 319 selfloop flow, removed 7 redundant places. [2023-11-29 05:11:17,554 INFO L231 Difference]: Finished difference. Result has 420 places, 1698 transitions, 28066 flow [2023-11-29 05:11:17,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=22314, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=613, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=825, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=28066, PETRI_PLACES=420, PETRI_TRANSITIONS=1698} [2023-11-29 05:11:17,556 INFO L281 CegarLoopForPetriNet]: 232 programPoint places, 188 predicate places. [2023-11-29 05:11:17,556 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 1698 transitions, 28066 flow [2023-11-29 05:11:17,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 175.65) internal successors, (3513), 20 states have internal predecessors, (3513), 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) [2023-11-29 05:11:17,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:11:17,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:11:17,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 05:11:17,557 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 05:11:17,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:11:17,557 INFO L85 PathProgramCache]: Analyzing trace with hash -67286597, now seen corresponding path program 6 times [2023-11-29 05:11:17,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:11:17,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767827009] [2023-11-29 05:11:17,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:17,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:11:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:11:18,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:11:18,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:11:18,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767827009] [2023-11-29 05:11:18,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767827009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:11:18,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:11:18,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-29 05:11:18,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130465220] [2023-11-29 05:11:18,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:11:18,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:11:18,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:11:18,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:11:18,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:11:21,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 250 [2023-11-29 05:11:21,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 1698 transitions, 28066 flow. Second operand has 18 states, 18 states have (on average 179.61111111111111) internal successors, (3233), 18 states have internal predecessors, (3233), 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) [2023-11-29 05:11:21,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:11:21,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 250 [2023-11-29 05:11:21,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand