./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d41bed37-5699-4032-a183-a70dea169635/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d41bed37-5699-4032-a183-a70dea169635/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_d41bed37-5699-4032-a183-a70dea169635/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d41bed37-5699-4032-a183-a70dea169635/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d41bed37-5699-4032-a183-a70dea169635/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_d41bed37-5699-4032-a183-a70dea169635/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 52bbaf4aea0b4aa619bc81dd1f1ee11014fb948f7d29769666561e1faf399ae7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:46:10,984 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:46:11,051 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d41bed37-5699-4032-a183-a70dea169635/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-29 01:46:11,056 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:46:11,057 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:46:11,081 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:46:11,082 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:46:11,082 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:46:11,083 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:46:11,084 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:46:11,084 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:46:11,085 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:46:11,085 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:46:11,086 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:46:11,086 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:46:11,087 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:46:11,087 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:46:11,088 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:46:11,088 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:46:11,089 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:46:11,089 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:46:11,090 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:46:11,090 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-29 01:46:11,091 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:46:11,091 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:46:11,092 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:46:11,093 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:46:11,093 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:46:11,093 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:46:11,094 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:46:11,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:46:11,095 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:46:11,095 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:46:11,096 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:46:11,096 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:46:11,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:46:11,096 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:46:11,096 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:46:11,096 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:46:11,097 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:46:11,097 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:46:11,097 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_d41bed37-5699-4032-a183-a70dea169635/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d41bed37-5699-4032-a183-a70dea169635/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52bbaf4aea0b4aa619bc81dd1f1ee11014fb948f7d29769666561e1faf399ae7 [2023-11-29 01:46:11,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:46:11,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:46:11,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:46:11,336 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:46:11,337 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:46:11,338 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d41bed37-5699-4032-a183-a70dea169635/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i [2023-11-29 01:46:14,061 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:46:14,297 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:46:14,297 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d41bed37-5699-4032-a183-a70dea169635/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i [2023-11-29 01:46:14,311 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d41bed37-5699-4032-a183-a70dea169635/bin/uautomizer-verify-BQ2R08f2Ya/data/7584e2a44/45e2bc26e7d540d69bd2e4a575d0b42d/FLAGf42f28566 [2023-11-29 01:46:14,323 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d41bed37-5699-4032-a183-a70dea169635/bin/uautomizer-verify-BQ2R08f2Ya/data/7584e2a44/45e2bc26e7d540d69bd2e4a575d0b42d [2023-11-29 01:46:14,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:46:14,327 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:46:14,328 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:46:14,328 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:46:14,333 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:46:14,333 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:46:14" (1/1) ... [2023-11-29 01:46:14,334 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3274925a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:14, skipping insertion in model container [2023-11-29 01:46:14,335 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:46:14" (1/1) ... [2023-11-29 01:46:14,384 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:46:14,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:46:14,671 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:46:14,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:46:14,756 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:46:14,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:14 WrapperNode [2023-11-29 01:46:14,756 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:46:14,757 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:46:14,758 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:46:14,758 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:46:14,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:14" (1/1) ... [2023-11-29 01:46:14,779 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:14" (1/1) ... [2023-11-29 01:46:14,804 INFO L138 Inliner]: procedures = 165, calls = 31, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 102 [2023-11-29 01:46:14,805 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:46:14,806 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:46:14,806 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:46:14,806 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:46:14,814 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:14" (1/1) ... [2023-11-29 01:46:14,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:14" (1/1) ... [2023-11-29 01:46:14,818 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:14" (1/1) ... [2023-11-29 01:46:14,818 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:14" (1/1) ... [2023-11-29 01:46:14,824 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:14" (1/1) ... [2023-11-29 01:46:14,827 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:14" (1/1) ... [2023-11-29 01:46:14,829 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:14" (1/1) ... [2023-11-29 01:46:14,830 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:14" (1/1) ... [2023-11-29 01:46:14,833 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:46:14,834 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:46:14,834 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:46:14,834 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:46:14,835 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:14" (1/1) ... [2023-11-29 01:46:14,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:46:14,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d41bed37-5699-4032-a183-a70dea169635/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:14,866 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d41bed37-5699-4032-a183-a70dea169635/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:46:14,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d41bed37-5699-4032-a183-a70dea169635/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:46:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 01:46:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-29 01:46:14,908 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-29 01:46:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 01:46:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 01:46:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:46:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:46:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:46:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 01:46:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 01:46:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:46:14,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:46:14,911 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 01:46:15,052 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:46:15,055 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:46:15,248 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:46:15,273 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:46:15,273 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 01:46:15,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:46:15 BoogieIcfgContainer [2023-11-29 01:46:15,275 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:46:15,278 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:46:15,278 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:46:15,281 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:46:15,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:46:14" (1/3) ... [2023-11-29 01:46:15,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e513a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:46:15, skipping insertion in model container [2023-11-29 01:46:15,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:14" (2/3) ... [2023-11-29 01:46:15,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e513a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:46:15, skipping insertion in model container [2023-11-29 01:46:15,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:46:15" (3/3) ... [2023-11-29 01:46:15,284 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-pthread.i [2023-11-29 01:46:15,293 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 01:46:15,305 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:46:15,305 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-29 01:46:15,305 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:46:15,400 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:46:15,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 115 transitions, 234 flow [2023-11-29 01:46:15,490 INFO L124 PetriNetUnfolderBase]: 10/126 cut-off events. [2023-11-29 01:46:15,490 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:46:15,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 126 events. 10/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 147 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 88. Up to 4 conditions per place. [2023-11-29 01:46:15,497 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 115 transitions, 234 flow [2023-11-29 01:46:15,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 115 transitions, 234 flow [2023-11-29 01:46:15,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:46:15,520 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;@61a4e713, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:46:15,521 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-29 01:46:15,536 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:46:15,537 INFO L124 PetriNetUnfolderBase]: 2/55 cut-off events. [2023-11-29 01:46:15,537 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:46:15,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:46:15,538 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:46:15,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-29 01:46:15,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:15,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1987745790, now seen corresponding path program 1 times [2023-11-29 01:46:15,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:15,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314592476] [2023-11-29 01:46:15,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:15,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:46:15,680 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:46:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:46:15,733 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:46:15,734 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:46:15,735 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-29 01:46:15,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2023-11-29 01:46:15,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2023-11-29 01:46:15,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2023-11-29 01:46:15,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2023-11-29 01:46:15,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2023-11-29 01:46:15,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2023-11-29 01:46:15,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2023-11-29 01:46:15,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2023-11-29 01:46:15,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:46:15,740 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 01:46:15,744 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 01:46:15,744 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 01:46:15,803 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:46:15,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 191 transitions, 392 flow [2023-11-29 01:46:15,865 INFO L124 PetriNetUnfolderBase]: 19/215 cut-off events. [2023-11-29 01:46:15,865 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 01:46:15,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 215 events. 19/215 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 500 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 163. Up to 6 conditions per place. [2023-11-29 01:46:15,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 191 transitions, 392 flow [2023-11-29 01:46:15,873 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 191 transitions, 392 flow [2023-11-29 01:46:15,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:46:15,876 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;@61a4e713, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:46:15,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-29 01:46:15,890 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:46:15,890 INFO L124 PetriNetUnfolderBase]: 4/85 cut-off events. [2023-11-29 01:46:15,890 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 01:46:15,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:46:15,891 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:46:15,891 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-29 01:46:15,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:15,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1746000211, now seen corresponding path program 1 times [2023-11-29 01:46:15,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:15,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291458292] [2023-11-29 01:46:15,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:15,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:46:15,930 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:46:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:46:15,962 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:46:15,962 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:46:15,963 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-29 01:46:15,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-11-29 01:46:15,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2023-11-29 01:46:15,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2023-11-29 01:46:15,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2023-11-29 01:46:15,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-11-29 01:46:15,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-11-29 01:46:15,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-11-29 01:46:15,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-11-29 01:46:15,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-11-29 01:46:15,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-11-29 01:46:15,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-11-29 01:46:15,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-11-29 01:46:15,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:46:15,966 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 01:46:15,967 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 01:46:15,967 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 01:46:16,031 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:46:16,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 267 transitions, 552 flow [2023-11-29 01:46:16,148 INFO L124 PetriNetUnfolderBase]: 28/304 cut-off events. [2023-11-29 01:46:16,148 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 01:46:16,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 304 events. 28/304 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 963 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 238. Up to 8 conditions per place. [2023-11-29 01:46:16,153 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 267 transitions, 552 flow [2023-11-29 01:46:16,158 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 267 transitions, 552 flow [2023-11-29 01:46:16,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:46:16,161 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;@61a4e713, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:46:16,161 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-29 01:46:16,177 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:46:16,177 INFO L124 PetriNetUnfolderBase]: 7/122 cut-off events. [2023-11-29 01:46:16,177 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 01:46:16,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:46:16,178 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:46:16,178 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-11-29 01:46:16,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:16,179 INFO L85 PathProgramCache]: Analyzing trace with hash -343035225, now seen corresponding path program 1 times [2023-11-29 01:46:16,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:16,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131247771] [2023-11-29 01:46:16,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:16,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:46:16,213 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:46:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:46:16,243 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:46:16,243 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:46:16,244 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-29 01:46:16,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-29 01:46:16,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-29 01:46:16,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-29 01:46:16,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-29 01:46:16,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-29 01:46:16,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-29 01:46:16,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-29 01:46:16,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-29 01:46:16,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-29 01:46:16,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-29 01:46:16,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-29 01:46:16,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-29 01:46:16,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-29 01:46:16,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-29 01:46:16,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-29 01:46:16,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-29 01:46:16,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:46:16,248 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 01:46:16,249 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 01:46:16,249 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-29 01:46:16,317 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:46:16,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 343 transitions, 714 flow [2023-11-29 01:46:16,424 INFO L124 PetriNetUnfolderBase]: 37/393 cut-off events. [2023-11-29 01:46:16,424 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-29 01:46:16,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 393 events. 37/393 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1442 event pairs, 0 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 313. Up to 10 conditions per place. [2023-11-29 01:46:16,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 319 places, 343 transitions, 714 flow [2023-11-29 01:46:16,438 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 319 places, 343 transitions, 714 flow [2023-11-29 01:46:16,440 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:46:16,441 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;@61a4e713, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:46:16,441 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-29 01:46:16,472 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:46:16,472 INFO L124 PetriNetUnfolderBase]: 9/143 cut-off events. [2023-11-29 01:46:16,472 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-29 01:46:16,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:46:16,473 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] [2023-11-29 01:46:16,473 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-11-29 01:46:16,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:16,474 INFO L85 PathProgramCache]: Analyzing trace with hash -2037700548, now seen corresponding path program 1 times [2023-11-29 01:46:16,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:16,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721046832] [2023-11-29 01:46:16,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:16,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:16,608 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 01:46:16,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:16,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721046832] [2023-11-29 01:46:16,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721046832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:16,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:46:16,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:46:16,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745864418] [2023-11-29 01:46:16,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:16,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:46:16,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:16,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:46:16,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:46:16,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 343 [2023-11-29 01:46:16,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 343 transitions, 714 flow. Second operand has 3 states, 3 states have (on average 296.3333333333333) internal successors, (889), 3 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:16,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:46:16,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 343 [2023-11-29 01:46:16,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:46:21,745 INFO L124 PetriNetUnfolderBase]: 5493/24263 cut-off events. [2023-11-29 01:46:21,745 INFO L125 PetriNetUnfolderBase]: For 4177/4177 co-relation queries the response was YES. [2023-11-29 01:46:21,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32420 conditions, 24263 events. 5493/24263 cut-off events. For 4177/4177 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 311933 event pairs, 3970 based on Foata normal form. 6285/27395 useless extension candidates. Maximal degree in co-relation 5210. Up to 5843 conditions per place. [2023-11-29 01:46:22,066 INFO L140 encePairwiseOnDemand]: 322/343 looper letters, 41 selfloop transitions, 2 changer transitions 0/324 dead transitions. [2023-11-29 01:46:22,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 324 transitions, 783 flow [2023-11-29 01:46:22,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:46:22,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:46:22,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 961 transitions. [2023-11-29 01:46:22,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9339164237123421 [2023-11-29 01:46:22,087 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 961 transitions. [2023-11-29 01:46:22,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 961 transitions. [2023-11-29 01:46:22,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:46:22,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 961 transitions. [2023-11-29 01:46:22,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 0 states have call successors, (0), 0 states 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 01:46:22,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states 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 01:46:22,111 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states 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 01:46:22,113 INFO L175 Difference]: Start difference. First operand has 319 places, 343 transitions, 714 flow. Second operand 3 states and 961 transitions. [2023-11-29 01:46:22,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 324 transitions, 783 flow [2023-11-29 01:46:22,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 324 transitions, 771 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-29 01:46:22,135 INFO L231 Difference]: Finished difference. Result has 304 places, 309 transitions, 650 flow [2023-11-29 01:46:22,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=650, PETRI_PLACES=304, PETRI_TRANSITIONS=309} [2023-11-29 01:46:22,142 INFO L281 CegarLoopForPetriNet]: 319 programPoint places, -15 predicate places. [2023-11-29 01:46:22,142 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 309 transitions, 650 flow [2023-11-29 01:46:22,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.3333333333333) internal successors, (889), 3 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:22,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:46:22,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:46:22,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:46:22,144 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-11-29 01:46:22,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:22,144 INFO L85 PathProgramCache]: Analyzing trace with hash -642186050, now seen corresponding path program 1 times [2023-11-29 01:46:22,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:22,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510520393] [2023-11-29 01:46:22,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:22,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:22,703 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 01:46:22,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:22,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510520393] [2023-11-29 01:46:22,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510520393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:22,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:46:22,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:46:22,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599290802] [2023-11-29 01:46:22,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:22,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:46:22,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:22,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:46:22,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:46:23,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 343 [2023-11-29 01:46:23,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 309 transitions, 650 flow. Second operand has 6 states, 6 states have (on average 290.6666666666667) internal successors, (1744), 6 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states 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 01:46:23,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:46:23,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 343 [2023-11-29 01:46:23,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:46:29,508 INFO L124 PetriNetUnfolderBase]: 9054/35773 cut-off events. [2023-11-29 01:46:29,508 INFO L125 PetriNetUnfolderBase]: For 4141/4141 co-relation queries the response was YES. [2023-11-29 01:46:29,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48890 conditions, 35773 events. 9054/35773 cut-off events. For 4141/4141 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 473629 event pairs, 3595 based on Foata normal form. 0/31845 useless extension candidates. Maximal degree in co-relation 27627. Up to 5313 conditions per place. [2023-11-29 01:46:29,922 INFO L140 encePairwiseOnDemand]: 337/343 looper letters, 86 selfloop transitions, 6 changer transitions 0/368 dead transitions. [2023-11-29 01:46:29,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 368 transitions, 1012 flow [2023-11-29 01:46:29,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:46:29,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:46:29,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1826 transitions. [2023-11-29 01:46:29,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8872691933916423 [2023-11-29 01:46:29,930 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1826 transitions. [2023-11-29 01:46:29,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1826 transitions. [2023-11-29 01:46:29,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:46:29,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1826 transitions. [2023-11-29 01:46:29,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 304.3333333333333) internal successors, (1826), 6 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states 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 01:46:29,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 343.0) internal successors, (2401), 7 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states 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 01:46:29,947 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 343.0) internal successors, (2401), 7 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states 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 01:46:29,947 INFO L175 Difference]: Start difference. First operand has 304 places, 309 transitions, 650 flow. Second operand 6 states and 1826 transitions. [2023-11-29 01:46:29,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 368 transitions, 1012 flow [2023-11-29 01:46:29,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 368 transitions, 1010 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:46:29,964 INFO L231 Difference]: Finished difference. Result has 307 places, 308 transitions, 658 flow [2023-11-29 01:46:29,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=658, PETRI_PLACES=307, PETRI_TRANSITIONS=308} [2023-11-29 01:46:29,965 INFO L281 CegarLoopForPetriNet]: 319 programPoint places, -12 predicate places. [2023-11-29 01:46:29,965 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 308 transitions, 658 flow [2023-11-29 01:46:29,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 290.6666666666667) internal successors, (1744), 6 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states 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 01:46:29,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:46:29,968 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:46:29,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:46:29,968 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-11-29 01:46:29,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:29,969 INFO L85 PathProgramCache]: Analyzing trace with hash -620946584, now seen corresponding path program 1 times [2023-11-29 01:46:29,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:29,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958931105] [2023-11-29 01:46:29,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:29,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:46:29,993 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:46:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:46:30,012 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:46:30,012 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:46:30,012 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-11-29 01:46:30,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2023-11-29 01:46:30,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2023-11-29 01:46:30,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2023-11-29 01:46:30,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2023-11-29 01:46:30,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2023-11-29 01:46:30,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2023-11-29 01:46:30,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2023-11-29 01:46:30,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2023-11-29 01:46:30,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2023-11-29 01:46:30,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2023-11-29 01:46:30,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2023-11-29 01:46:30,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2023-11-29 01:46:30,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2023-11-29 01:46:30,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2023-11-29 01:46:30,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2023-11-29 01:46:30,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2023-11-29 01:46:30,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2023-11-29 01:46:30,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2023-11-29 01:46:30,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2023-11-29 01:46:30,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2023-11-29 01:46:30,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:46:30,016 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-29 01:46:30,017 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 01:46:30,017 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-29 01:46:30,074 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:46:30,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 389 places, 419 transitions, 878 flow [2023-11-29 01:46:30,155 INFO L124 PetriNetUnfolderBase]: 46/482 cut-off events. [2023-11-29 01:46:30,155 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-29 01:46:30,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 482 events. 46/482 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1946 event pairs, 0 based on Foata normal form. 0/410 useless extension candidates. Maximal degree in co-relation 406. Up to 12 conditions per place. [2023-11-29 01:46:30,160 INFO L82 GeneralOperation]: Start removeDead. Operand has 389 places, 419 transitions, 878 flow [2023-11-29 01:46:30,164 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 389 places, 419 transitions, 878 flow [2023-11-29 01:46:30,165 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:46:30,166 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;@61a4e713, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:46:30,166 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-29 01:46:30,175 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:46:30,175 INFO L124 PetriNetUnfolderBase]: 7/136 cut-off events. [2023-11-29 01:46:30,176 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-29 01:46:30,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:46:30,176 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] [2023-11-29 01:46:30,176 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-29 01:46:30,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:30,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1923482039, now seen corresponding path program 1 times [2023-11-29 01:46:30,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:30,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224304329] [2023-11-29 01:46:30,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:30,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:30,214 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 01:46:30,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:30,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224304329] [2023-11-29 01:46:30,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224304329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:30,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:46:30,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:46:30,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634969858] [2023-11-29 01:46:30,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:30,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:46:30,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:30,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:46:30,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:46:30,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 360 out of 419 [2023-11-29 01:46:30,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 419 transitions, 878 flow. Second operand has 3 states, 3 states have (on average 362.3333333333333) internal successors, (1087), 3 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states 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 01:46:30,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:46:30,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 360 of 419 [2023-11-29 01:46:30,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:46:59,003 INFO L124 PetriNetUnfolderBase]: 35213/136313 cut-off events. [2023-11-29 01:46:59,003 INFO L125 PetriNetUnfolderBase]: For 33197/33197 co-relation queries the response was YES. [2023-11-29 01:47:00,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186471 conditions, 136313 events. 35213/136313 cut-off events. For 33197/33197 co-relation queries the response was YES. Maximal size of possible extension queue 2930. Compared 2165754 event pairs, 26720 based on Foata normal form. 38910/158395 useless extension candidates. Maximal degree in co-relation 32284. Up to 36093 conditions per place. [2023-11-29 01:47:01,636 INFO L140 encePairwiseOnDemand]: 394/419 looper letters, 51 selfloop transitions, 2 changer transitions 0/398 dead transitions. [2023-11-29 01:47:01,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 398 transitions, 974 flow [2023-11-29 01:47:01,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:47:01,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:47:01,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1177 transitions. [2023-11-29 01:47:01,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9363564041368337 [2023-11-29 01:47:01,641 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1177 transitions. [2023-11-29 01:47:01,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1177 transitions. [2023-11-29 01:47:01,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:47:01,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1177 transitions. [2023-11-29 01:47:01,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 392.3333333333333) internal successors, (1177), 3 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states 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 01:47:01,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states 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 01:47:01,652 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states 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 01:47:01,653 INFO L175 Difference]: Start difference. First operand has 389 places, 419 transitions, 878 flow. Second operand 3 states and 1177 transitions. [2023-11-29 01:47:01,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 398 transitions, 974 flow [2023-11-29 01:47:01,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 398 transitions, 950 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-11-29 01:47:01,687 INFO L231 Difference]: Finished difference. Result has 371 places, 378 transitions, 794 flow [2023-11-29 01:47:01,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=794, PETRI_PLACES=371, PETRI_TRANSITIONS=378} [2023-11-29 01:47:01,689 INFO L281 CegarLoopForPetriNet]: 389 programPoint places, -18 predicate places. [2023-11-29 01:47:01,689 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 378 transitions, 794 flow [2023-11-29 01:47:01,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 362.3333333333333) internal successors, (1087), 3 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states 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 01:47:01,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:47:01,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:47:01,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:47:01,691 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-29 01:47:01,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:01,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1747629707, now seen corresponding path program 1 times [2023-11-29 01:47:01,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:01,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986732506] [2023-11-29 01:47:01,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:01,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:02,007 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 01:47:02,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:47:02,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986732506] [2023-11-29 01:47:02,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986732506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:47:02,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:47:02,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:47:02,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609983973] [2023-11-29 01:47:02,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:47:02,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:47:02,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:47:02,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:47:02,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:47:02,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 355 out of 419 [2023-11-29 01:47:02,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 378 transitions, 794 flow. Second operand has 6 states, 6 states have (on average 356.6666666666667) internal successors, (2140), 6 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states 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 01:47:02,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:47:02,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 355 of 419 [2023-11-29 01:47:02,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:47:42,436 INFO L124 PetriNetUnfolderBase]: 57804/191773 cut-off events. [2023-11-29 01:47:42,437 INFO L125 PetriNetUnfolderBase]: For 25766/25766 co-relation queries the response was YES. [2023-11-29 01:47:44,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269891 conditions, 191773 events. 57804/191773 cut-off events. For 25766/25766 co-relation queries the response was YES. Maximal size of possible extension queue 4276. Compared 3011815 event pairs, 24220 based on Foata normal form. 0/172020 useless extension candidates. Maximal degree in co-relation 152227. Up to 32813 conditions per place. [2023-11-29 01:47:46,342 INFO L140 encePairwiseOnDemand]: 413/419 looper letters, 111 selfloop transitions, 6 changer transitions 0/457 dead transitions. [2023-11-29 01:47:46,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 457 transitions, 1266 flow [2023-11-29 01:47:46,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:47:46,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:47:46,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2247 transitions. [2023-11-29 01:47:46,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8937947494033412 [2023-11-29 01:47:46,351 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2247 transitions. [2023-11-29 01:47:46,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2247 transitions. [2023-11-29 01:47:46,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:47:46,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2247 transitions. [2023-11-29 01:47:46,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 374.5) internal successors, (2247), 6 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states 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 01:47:46,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 419.0) internal successors, (2933), 7 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states 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 01:47:46,371 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 419.0) internal successors, (2933), 7 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states 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 01:47:46,371 INFO L175 Difference]: Start difference. First operand has 371 places, 378 transitions, 794 flow. Second operand 6 states and 2247 transitions. [2023-11-29 01:47:46,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 457 transitions, 1266 flow [2023-11-29 01:47:46,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 457 transitions, 1264 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:47:46,466 INFO L231 Difference]: Finished difference. Result has 374 places, 377 transitions, 802 flow [2023-11-29 01:47:46,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=802, PETRI_PLACES=374, PETRI_TRANSITIONS=377} [2023-11-29 01:47:46,468 INFO L281 CegarLoopForPetriNet]: 389 programPoint places, -15 predicate places. [2023-11-29 01:47:46,468 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 377 transitions, 802 flow [2023-11-29 01:47:46,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 356.6666666666667) internal successors, (2140), 6 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states 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 01:47:46,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:47:46,470 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:47:46,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:47:46,470 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-29 01:47:46,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:46,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1361485296, now seen corresponding path program 1 times [2023-11-29 01:47:46,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:46,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892559740] [2023-11-29 01:47:46,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:46,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:46,518 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:47:46,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:47:46,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892559740] [2023-11-29 01:47:46,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892559740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:47:46,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:47:46,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:47:46,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492591370] [2023-11-29 01:47:46,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:47:46,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:47:46,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:47:46,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:47:46,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:47:46,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 360 out of 419 [2023-11-29 01:47:46,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 377 transitions, 802 flow. Second operand has 3 states, 3 states have (on average 362.6666666666667) internal successors, (1088), 3 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states 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 01:47:46,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:47:46,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 360 of 419 [2023-11-29 01:47:46,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:48:09,950 INFO L124 PetriNetUnfolderBase]: 33673/114597 cut-off events. [2023-11-29 01:48:09,950 INFO L125 PetriNetUnfolderBase]: For 10898/10898 co-relation queries the response was YES. [2023-11-29 01:48:11,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159575 conditions, 114597 events. 33673/114597 cut-off events. For 10898/10898 co-relation queries the response was YES. Maximal size of possible extension queue 2895. Compared 1735180 event pairs, 25154 based on Foata normal form. 780/101731 useless extension candidates. Maximal degree in co-relation 159467. Up to 36080 conditions per place. [2023-11-29 01:48:12,209 INFO L140 encePairwiseOnDemand]: 416/419 looper letters, 50 selfloop transitions, 2 changer transitions 0/397 dead transitions. [2023-11-29 01:48:12,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 397 transitions, 961 flow [2023-11-29 01:48:12,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:48:12,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:48:12,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1133 transitions. [2023-11-29 01:48:12,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9013524264120922 [2023-11-29 01:48:12,213 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1133 transitions. [2023-11-29 01:48:12,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1133 transitions. [2023-11-29 01:48:12,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:48:12,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1133 transitions. [2023-11-29 01:48:12,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 377.6666666666667) internal successors, (1133), 3 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states 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 01:48:12,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states 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 01:48:12,222 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states 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 01:48:12,222 INFO L175 Difference]: Start difference. First operand has 374 places, 377 transitions, 802 flow. Second operand 3 states and 1133 transitions. [2023-11-29 01:48:12,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 397 transitions, 961 flow [2023-11-29 01:48:12,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 397 transitions, 949 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 01:48:12,262 INFO L231 Difference]: Finished difference. Result has 372 places, 378 transitions, 802 flow [2023-11-29 01:48:12,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=802, PETRI_PLACES=372, PETRI_TRANSITIONS=378} [2023-11-29 01:48:12,264 INFO L281 CegarLoopForPetriNet]: 389 programPoint places, -17 predicate places. [2023-11-29 01:48:12,264 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 378 transitions, 802 flow [2023-11-29 01:48:12,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 362.6666666666667) internal successors, (1088), 3 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states 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 01:48:12,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:48:12,265 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:48:12,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:48:12,266 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-29 01:48:12,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:12,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1800273682, now seen corresponding path program 1 times [2023-11-29 01:48:12,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:12,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166394963] [2023-11-29 01:48:12,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:12,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:12,707 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:48:12,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:12,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166394963] [2023-11-29 01:48:12,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166394963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:12,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:12,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:48:12,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95481533] [2023-11-29 01:48:12,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:12,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:48:12,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:12,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:48:12,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:48:13,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 355 out of 419 [2023-11-29 01:48:13,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 378 transitions, 802 flow. Second operand has 6 states, 6 states have (on average 356.8333333333333) internal successors, (2141), 6 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states 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 01:48:13,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:48:13,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 355 of 419 [2023-11-29 01:48:13,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:48:48,786 INFO L124 PetriNetUnfolderBase]: 55370/170784 cut-off events. [2023-11-29 01:48:48,786 INFO L125 PetriNetUnfolderBase]: For 21216/21216 co-relation queries the response was YES. [2023-11-29 01:48:50,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248828 conditions, 170784 events. 55370/170784 cut-off events. For 21216/21216 co-relation queries the response was YES. Maximal size of possible extension queue 4465. Compared 2610252 event pairs, 23747 based on Foata normal form. 0/153141 useless extension candidates. Maximal degree in co-relation 248723. Up to 32802 conditions per place. [2023-11-29 01:48:52,202 INFO L140 encePairwiseOnDemand]: 413/419 looper letters, 107 selfloop transitions, 6 changer transitions 0/453 dead transitions. [2023-11-29 01:48:52,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 453 transitions, 1238 flow [2023-11-29 01:48:52,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:48:52,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:48:52,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2243 transitions. [2023-11-29 01:48:52,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8922036595067622 [2023-11-29 01:48:52,208 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2243 transitions. [2023-11-29 01:48:52,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2243 transitions. [2023-11-29 01:48:52,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:48:52,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2243 transitions. [2023-11-29 01:48:52,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 373.8333333333333) internal successors, (2243), 6 states have internal predecessors, (2243), 0 states have call successors, (0), 0 states 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 01:48:52,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 419.0) internal successors, (2933), 7 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states 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 01:48:52,221 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 419.0) internal successors, (2933), 7 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states 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 01:48:52,221 INFO L175 Difference]: Start difference. First operand has 372 places, 378 transitions, 802 flow. Second operand 6 states and 2243 transitions. [2023-11-29 01:48:52,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 453 transitions, 1238 flow [2023-11-29 01:48:52,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 453 transitions, 1236 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:48:52,291 INFO L231 Difference]: Finished difference. Result has 375 places, 377 transitions, 810 flow [2023-11-29 01:48:52,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=810, PETRI_PLACES=375, PETRI_TRANSITIONS=377} [2023-11-29 01:48:52,292 INFO L281 CegarLoopForPetriNet]: 389 programPoint places, -14 predicate places. [2023-11-29 01:48:52,293 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 377 transitions, 810 flow [2023-11-29 01:48:52,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 356.8333333333333) internal successors, (2141), 6 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states 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 01:48:52,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:48:52,294 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 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 01:48:52,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:48:52,294 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-29 01:48:52,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:52,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1527259264, now seen corresponding path program 1 times [2023-11-29 01:48:52,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:52,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102660403] [2023-11-29 01:48:52,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:52,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:48:52,313 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:48:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:48:52,333 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:48:52,333 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:48:52,334 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-11-29 01:48:52,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2023-11-29 01:48:52,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2023-11-29 01:48:52,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2023-11-29 01:48:52,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2023-11-29 01:48:52,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2023-11-29 01:48:52,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2023-11-29 01:48:52,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2023-11-29 01:48:52,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2023-11-29 01:48:52,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2023-11-29 01:48:52,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2023-11-29 01:48:52,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2023-11-29 01:48:52,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2023-11-29 01:48:52,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2023-11-29 01:48:52,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2023-11-29 01:48:52,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2023-11-29 01:48:52,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2023-11-29 01:48:52,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2023-11-29 01:48:52,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2023-11-29 01:48:52,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2023-11-29 01:48:52,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2023-11-29 01:48:52,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2023-11-29 01:48:52,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2023-11-29 01:48:52,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2023-11-29 01:48:52,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2023-11-29 01:48:52,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:48:52,338 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-29 01:48:52,338 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 01:48:52,339 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-11-29 01:48:52,422 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:48:52,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 459 places, 495 transitions, 1044 flow [2023-11-29 01:48:52,726 INFO L124 PetriNetUnfolderBase]: 55/571 cut-off events. [2023-11-29 01:48:52,726 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-29 01:48:52,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 571 events. 55/571 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2449 event pairs, 0 based on Foata normal form. 0/485 useless extension candidates. Maximal degree in co-relation 501. Up to 14 conditions per place. [2023-11-29 01:48:52,737 INFO L82 GeneralOperation]: Start removeDead. Operand has 459 places, 495 transitions, 1044 flow [2023-11-29 01:48:52,746 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 459 places, 495 transitions, 1044 flow [2023-11-29 01:48:52,747 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:48:52,747 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;@61a4e713, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:48:52,747 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-11-29 01:48:52,760 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:48:52,760 INFO L124 PetriNetUnfolderBase]: 9/143 cut-off events. [2023-11-29 01:48:52,760 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-29 01:48:52,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:48:52,760 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] [2023-11-29 01:48:52,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-11-29 01:48:52,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:52,761 INFO L85 PathProgramCache]: Analyzing trace with hash 278168269, now seen corresponding path program 1 times [2023-11-29 01:48:52,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:52,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499778095] [2023-11-29 01:48:52,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:52,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:52,796 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 01:48:52,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:52,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499778095] [2023-11-29 01:48:52,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499778095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:52,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:52,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:48:52,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472944086] [2023-11-29 01:48:52,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:52,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:48:52,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:52,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:48:52,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:48:52,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 495 [2023-11-29 01:48:52,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 495 transitions, 1044 flow. Second operand has 3 states, 3 states have (on average 428.3333333333333) internal successors, (1285), 3 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states 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 01:48:52,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:48:52,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 495 [2023-11-29 01:48:52,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand