./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX --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 b4399e58ed3ca9c75e2a61372e91a4308548a0e79a3eb4428d85990bd71242f7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 19:01:30,735 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 19:01:30,856 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-08 19:01:30,862 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 19:01:30,863 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 19:01:30,905 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 19:01:30,906 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 19:01:30,907 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 19:01:30,909 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 19:01:30,911 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 19:01:30,912 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 19:01:30,912 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 19:01:30,913 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 19:01:30,914 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 19:01:30,914 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 19:01:30,915 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 19:01:30,915 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 19:01:30,916 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 19:01:30,917 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 19:01:30,917 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 19:01:30,918 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 19:01:30,921 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 19:01:30,922 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-08 19:01:30,923 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 19:01:30,923 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 19:01:30,924 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 19:01:30,924 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 19:01:30,925 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 19:01:30,925 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 19:01:30,925 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 19:01:30,926 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 19:01:30,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:01:30,927 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 19:01:30,927 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 19:01:30,928 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 19:01:30,928 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 19:01:30,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 19:01:30,932 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 19:01:30,932 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 19:01:30,933 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 19:01:30,933 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 19:01:30,934 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_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4399e58ed3ca9c75e2a61372e91a4308548a0e79a3eb4428d85990bd71242f7 [2024-11-08 19:01:31,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:01:31,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:01:31,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:01:31,362 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:01:31,362 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:01:31,364 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i Unable to find full path for "g++" [2024-11-08 19:01:33,832 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:01:34,155 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:01:34,156 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2024-11-08 19:01:34,187 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX/data/35675bfe9/ec8f0faec9a1441192bcb92a402177f2/FLAG8573c8113 [2024-11-08 19:01:34,439 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX/data/35675bfe9/ec8f0faec9a1441192bcb92a402177f2 [2024-11-08 19:01:34,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:01:34,444 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:01:34,445 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:01:34,446 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:01:34,456 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:01:34,457 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:01:34" (1/1) ... [2024-11-08 19:01:34,458 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66ad93e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:01:34, skipping insertion in model container [2024-11-08 19:01:34,459 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:01:34" (1/1) ... [2024-11-08 19:01:34,521 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:01:35,055 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:01:35,076 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:01:35,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:01:35,227 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:01:35,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:01:35 WrapperNode [2024-11-08 19:01:35,228 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:01:35,230 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:01:35,231 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:01:35,231 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:01:35,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:01:35" (1/1) ... [2024-11-08 19:01:35,266 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:01:35" (1/1) ... [2024-11-08 19:01:35,308 INFO L138 Inliner]: procedures = 171, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 127 [2024-11-08 19:01:35,309 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:01:35,314 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:01:35,314 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:01:35,314 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:01:35,328 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:01:35" (1/1) ... [2024-11-08 19:01:35,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:01:35" (1/1) ... [2024-11-08 19:01:35,334 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:01:35" (1/1) ... [2024-11-08 19:01:35,337 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:01:35" (1/1) ... [2024-11-08 19:01:35,346 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:01:35" (1/1) ... [2024-11-08 19:01:35,351 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:01:35" (1/1) ... [2024-11-08 19:01:35,353 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:01:35" (1/1) ... [2024-11-08 19:01:35,355 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:01:35" (1/1) ... [2024-11-08 19:01:35,361 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:01:35,362 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:01:35,362 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:01:35,363 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:01:35,364 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:01:35" (1/1) ... [2024-11-08 19:01:35,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:01:35,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:01:35,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 19:01:35,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 19:01:35,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-08 19:01:35,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-08 19:01:35,443 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-08 19:01:35,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:01:35,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 19:01:35,443 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-08 19:01:35,444 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-08 19:01:35,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 19:01:35,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-08 19:01:35,444 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-08 19:01:35,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:01:35,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:01:35,447 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 19:01:35,754 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:01:35,756 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:01:36,228 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 19:01:36,229 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:01:36,319 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:01:36,319 INFO L316 CfgBuilder]: Removed 14 assume(true) statements. [2024-11-08 19:01:36,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:01:36 BoogieIcfgContainer [2024-11-08 19:01:36,321 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:01:36,323 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 19:01:36,323 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 19:01:36,329 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 19:01:36,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:01:34" (1/3) ... [2024-11-08 19:01:36,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ccd4e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:01:36, skipping insertion in model container [2024-11-08 19:01:36,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:01:35" (2/3) ... [2024-11-08 19:01:36,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ccd4e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:01:36, skipping insertion in model container [2024-11-08 19:01:36,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:01:36" (3/3) ... [2024-11-08 19:01:36,333 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2024-11-08 19:01:36,351 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 19:01:36,352 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-08 19:01:36,352 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 19:01:36,431 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-08 19:01:36,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 195 transitions, 397 flow [2024-11-08 19:01:36,672 INFO L124 PetriNetUnfolderBase]: 32/296 cut-off events. [2024-11-08 19:01:36,672 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 19:01:36,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 296 events. 32/296 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1119 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 164. Up to 6 conditions per place. [2024-11-08 19:01:36,683 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 195 transitions, 397 flow [2024-11-08 19:01:36,691 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 195 transitions, 397 flow [2024-11-08 19:01:36,702 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:01:36,710 INFO L333 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, 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;@18c37417, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:01:36,711 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-08 19:01:36,731 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 19:01:36,733 INFO L124 PetriNetUnfolderBase]: 3/52 cut-off events. [2024-11-08 19:01:36,733 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 19:01:36,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:01:36,734 INFO L204 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] [2024-11-08 19:01:36,736 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-11-08 19:01:36,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:01:36,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1762556703, now seen corresponding path program 1 times [2024-11-08 19:01:36,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:01:36,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912547130] [2024-11-08 19:01:36,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:01:36,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:01:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:01:37,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:01:37,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:01:37,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912547130] [2024-11-08 19:01:37,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912547130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:01:37,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:01:37,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:01:37,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079875011] [2024-11-08 19:01:37,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:01:37,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:01:37,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:01:37,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:01:37,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:01:37,337 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 195 [2024-11-08 19:01:37,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 195 transitions, 397 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:01:37,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:01:37,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 195 [2024-11-08 19:01:37,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:01:37,779 INFO L124 PetriNetUnfolderBase]: 144/1247 cut-off events. [2024-11-08 19:01:37,779 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 19:01:37,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1531 conditions, 1247 events. 144/1247 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 8099 event pairs, 0 based on Foata normal form. 131/1250 useless extension candidates. Maximal degree in co-relation 1449. Up to 267 conditions per place. [2024-11-08 19:01:37,793 INFO L140 encePairwiseOnDemand]: 175/195 looper letters, 35 selfloop transitions, 2 changer transitions 0/187 dead transitions. [2024-11-08 19:01:37,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 187 transitions, 455 flow [2024-11-08 19:01:37,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:01:37,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 19:01:37,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 514 transitions. [2024-11-08 19:01:37,812 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8786324786324786 [2024-11-08 19:01:37,815 INFO L175 Difference]: Start difference. First operand has 178 places, 195 transitions, 397 flow. Second operand 3 states and 514 transitions. [2024-11-08 19:01:37,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 187 transitions, 455 flow [2024-11-08 19:01:37,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 187 transitions, 455 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 19:01:37,827 INFO L231 Difference]: Finished difference. Result has 179 places, 177 transitions, 371 flow [2024-11-08 19:01:37,830 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=371, PETRI_PLACES=179, PETRI_TRANSITIONS=177} [2024-11-08 19:01:37,838 INFO L277 CegarLoopForPetriNet]: 178 programPoint places, 1 predicate places. [2024-11-08 19:01:37,838 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 177 transitions, 371 flow [2024-11-08 19:01:37,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:01:37,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:01:37,839 INFO L204 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] [2024-11-08 19:01:37,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 19:01:37,840 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-11-08 19:01:37,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:01:37,841 INFO L85 PathProgramCache]: Analyzing trace with hash -726650513, now seen corresponding path program 1 times [2024-11-08 19:01:37,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:01:37,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754176320] [2024-11-08 19:01:37,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:01:37,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:01:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:01:38,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:01:38,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:01:38,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754176320] [2024-11-08 19:01:38,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754176320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:01:38,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:01:38,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:01:38,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582351964] [2024-11-08 19:01:38,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:01:38,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:01:38,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:01:38,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:01:38,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:01:38,906 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 195 [2024-11-08 19:01:38,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 177 transitions, 371 flow. Second operand has 6 states, 6 states have (on average 141.5) internal successors, (849), 6 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:01:38,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:01:38,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 195 [2024-11-08 19:01:38,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:01:39,472 INFO L124 PetriNetUnfolderBase]: 240/1417 cut-off events. [2024-11-08 19:01:39,473 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-08 19:01:39,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1943 conditions, 1417 events. 240/1417 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 9601 event pairs, 138 based on Foata normal form. 0/1283 useless extension candidates. Maximal degree in co-relation 1855. Up to 369 conditions per place. [2024-11-08 19:01:39,489 INFO L140 encePairwiseOnDemand]: 189/195 looper letters, 72 selfloop transitions, 5 changer transitions 0/216 dead transitions. [2024-11-08 19:01:39,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 216 transitions, 603 flow [2024-11-08 19:01:39,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:01:39,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 19:01:39,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 918 transitions. [2024-11-08 19:01:39,499 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7846153846153846 [2024-11-08 19:01:39,499 INFO L175 Difference]: Start difference. First operand has 179 places, 177 transitions, 371 flow. Second operand 6 states and 918 transitions. [2024-11-08 19:01:39,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 216 transitions, 603 flow [2024-11-08 19:01:39,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 216 transitions, 599 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 19:01:39,513 INFO L231 Difference]: Finished difference. Result has 181 places, 176 transitions, 375 flow [2024-11-08 19:01:39,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=375, PETRI_PLACES=181, PETRI_TRANSITIONS=176} [2024-11-08 19:01:39,515 INFO L277 CegarLoopForPetriNet]: 178 programPoint places, 3 predicate places. [2024-11-08 19:01:39,515 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 176 transitions, 375 flow [2024-11-08 19:01:39,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 141.5) internal successors, (849), 6 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:01:39,517 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:01:39,517 INFO L204 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] [2024-11-08 19:01:39,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 19:01:39,518 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-11-08 19:01:39,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:01:39,521 INFO L85 PathProgramCache]: Analyzing trace with hash 846439030, now seen corresponding path program 1 times [2024-11-08 19:01:39,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:01:39,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288470561] [2024-11-08 19:01:39,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:01:39,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:01:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:01:39,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:01:39,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:01:39,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288470561] [2024-11-08 19:01:39,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288470561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:01:39,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:01:39,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:01:39,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831944313] [2024-11-08 19:01:39,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:01:39,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:01:39,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:01:39,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:01:39,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:01:39,715 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 195 [2024-11-08 19:01:39,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 176 transitions, 375 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:01:39,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:01:39,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 195 [2024-11-08 19:01:39,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:01:40,249 INFO L124 PetriNetUnfolderBase]: 448/2467 cut-off events. [2024-11-08 19:01:40,249 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-08 19:01:40,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3414 conditions, 2467 events. 448/2467 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 18923 event pairs, 160 based on Foata normal form. 0/2227 useless extension candidates. Maximal degree in co-relation 3351. Up to 544 conditions per place. [2024-11-08 19:01:40,262 INFO L140 encePairwiseOnDemand]: 173/195 looper letters, 61 selfloop transitions, 16 changer transitions 0/211 dead transitions. [2024-11-08 19:01:40,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 211 transitions, 602 flow [2024-11-08 19:01:40,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:01:40,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 19:01:40,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2024-11-08 19:01:40,266 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8393162393162393 [2024-11-08 19:01:40,266 INFO L175 Difference]: Start difference. First operand has 181 places, 176 transitions, 375 flow. Second operand 3 states and 491 transitions. [2024-11-08 19:01:40,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 211 transitions, 602 flow [2024-11-08 19:01:40,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 211 transitions, 592 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-08 19:01:40,273 INFO L231 Difference]: Finished difference. Result has 180 places, 192 transitions, 505 flow [2024-11-08 19:01:40,276 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=505, PETRI_PLACES=180, PETRI_TRANSITIONS=192} [2024-11-08 19:01:40,277 INFO L277 CegarLoopForPetriNet]: 178 programPoint places, 2 predicate places. [2024-11-08 19:01:40,277 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 192 transitions, 505 flow [2024-11-08 19:01:40,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:01:40,278 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:01:40,279 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:01:40,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 19:01:40,280 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-11-08 19:01:40,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:01:40,281 INFO L85 PathProgramCache]: Analyzing trace with hash 549612655, now seen corresponding path program 1 times [2024-11-08 19:01:40,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:01:40,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801464582] [2024-11-08 19:01:40,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:01:40,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:01:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:01:40,323 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 19:01:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:01:40,367 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 19:01:40,368 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 19:01:40,369 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-08 19:01:40,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-11-08 19:01:40,372 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-11-08 19:01:40,372 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-11-08 19:01:40,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-11-08 19:01:40,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-11-08 19:01:40,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-11-08 19:01:40,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-11-08 19:01:40,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-11-08 19:01:40,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-11-08 19:01:40,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-11-08 19:01:40,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-11-08 19:01:40,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-11-08 19:01:40,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-11-08 19:01:40,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-11-08 19:01:40,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-11-08 19:01:40,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-11-08 19:01:40,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-11-08 19:01:40,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 19:01:40,378 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-08 19:01:40,381 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 19:01:40,381 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-08 19:01:40,433 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 19:01:40,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 257 transitions, 530 flow [2024-11-08 19:01:40,517 INFO L124 PetriNetUnfolderBase]: 54/488 cut-off events. [2024-11-08 19:01:40,517 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-08 19:01:40,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 488 events. 54/488 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2102 event pairs, 0 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 298. Up to 9 conditions per place. [2024-11-08 19:01:40,521 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 257 transitions, 530 flow [2024-11-08 19:01:40,527 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 257 transitions, 530 flow [2024-11-08 19:01:40,529 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:01:40,530 INFO L333 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, 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;@18c37417, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:01:40,531 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-08 19:01:40,537 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 19:01:40,537 INFO L124 PetriNetUnfolderBase]: 3/52 cut-off events. [2024-11-08 19:01:40,537 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 19:01:40,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:01:40,538 INFO L204 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] [2024-11-08 19:01:40,538 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-08 19:01:40,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:01:40,539 INFO L85 PathProgramCache]: Analyzing trace with hash -337068769, now seen corresponding path program 1 times [2024-11-08 19:01:40,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:01:40,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590818195] [2024-11-08 19:01:40,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:01:40,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:01:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:01:40,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:01:40,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:01:40,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590818195] [2024-11-08 19:01:40,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590818195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:01:40,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:01:40,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:01:40,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732480021] [2024-11-08 19:01:40,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:01:40,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:01:40,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:01:40,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:01:40,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:01:40,638 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 257 [2024-11-08 19:01:40,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 257 transitions, 530 flow. Second operand has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:01:40,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:01:40,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 257 [2024-11-08 19:01:40,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:01:43,453 INFO L124 PetriNetUnfolderBase]: 3214/12923 cut-off events. [2024-11-08 19:01:43,454 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-11-08 19:01:43,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17772 conditions, 12923 events. 3214/12923 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 141451 event pairs, 1340 based on Foata normal form. 2057/13674 useless extension candidates. Maximal degree in co-relation 1773. Up to 4775 conditions per place. [2024-11-08 19:01:43,576 INFO L140 encePairwiseOnDemand]: 231/257 looper letters, 48 selfloop transitions, 2 changer transitions 0/244 dead transitions. [2024-11-08 19:01:43,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 244 transitions, 604 flow [2024-11-08 19:01:43,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:01:43,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 19:01:43,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 665 transitions. [2024-11-08 19:01:43,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8625162127107653 [2024-11-08 19:01:43,580 INFO L175 Difference]: Start difference. First operand has 234 places, 257 transitions, 530 flow. Second operand 3 states and 665 transitions. [2024-11-08 19:01:43,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 244 transitions, 604 flow [2024-11-08 19:01:43,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 244 transitions, 604 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 19:01:43,586 INFO L231 Difference]: Finished difference. Result has 235 places, 234 transitions, 496 flow [2024-11-08 19:01:43,587 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=496, PETRI_PLACES=235, PETRI_TRANSITIONS=234} [2024-11-08 19:01:43,588 INFO L277 CegarLoopForPetriNet]: 234 programPoint places, 1 predicate places. [2024-11-08 19:01:43,588 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 234 transitions, 496 flow [2024-11-08 19:01:43,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:01:43,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:01:43,590 INFO L204 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] [2024-11-08 19:01:43,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 19:01:43,590 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-08 19:01:43,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:01:43,591 INFO L85 PathProgramCache]: Analyzing trace with hash -49140817, now seen corresponding path program 1 times [2024-11-08 19:01:43,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:01:43,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332397106] [2024-11-08 19:01:43,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:01:43,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:01:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:01:44,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:01:44,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:01:44,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332397106] [2024-11-08 19:01:44,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332397106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:01:44,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:01:44,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:01:44,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928612472] [2024-11-08 19:01:44,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:01:44,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:01:44,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:01:44,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:01:44,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:01:44,346 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 257 [2024-11-08 19:01:44,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 234 transitions, 496 flow. Second operand has 6 states, 6 states have (on average 185.5) internal successors, (1113), 6 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:01:44,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:01:44,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 257 [2024-11-08 19:01:44,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:01:48,108 INFO L124 PetriNetUnfolderBase]: 5478/18342 cut-off events. [2024-11-08 19:01:48,109 INFO L125 PetriNetUnfolderBase]: For 247/247 co-relation queries the response was YES. [2024-11-08 19:01:48,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27002 conditions, 18342 events. 5478/18342 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 205438 event pairs, 2352 based on Foata normal form. 0/16720 useless extension candidates. Maximal degree in co-relation 14291. Up to 6335 conditions per place. [2024-11-08 19:01:48,297 INFO L140 encePairwiseOnDemand]: 251/257 looper letters, 124 selfloop transitions, 6 changer transitions 0/313 dead transitions. [2024-11-08 19:01:48,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 313 transitions, 914 flow [2024-11-08 19:01:48,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:01:48,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 19:01:48,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1234 transitions. [2024-11-08 19:01:48,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8002594033722439 [2024-11-08 19:01:48,304 INFO L175 Difference]: Start difference. First operand has 235 places, 234 transitions, 496 flow. Second operand 6 states and 1234 transitions. [2024-11-08 19:01:48,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 313 transitions, 914 flow [2024-11-08 19:01:48,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 313 transitions, 912 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 19:01:48,317 INFO L231 Difference]: Finished difference. Result has 238 places, 233 transitions, 504 flow [2024-11-08 19:01:48,318 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=504, PETRI_PLACES=238, PETRI_TRANSITIONS=233} [2024-11-08 19:01:48,320 INFO L277 CegarLoopForPetriNet]: 234 programPoint places, 4 predicate places. [2024-11-08 19:01:48,322 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 233 transitions, 504 flow [2024-11-08 19:01:48,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 185.5) internal successors, (1113), 6 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:01:48,324 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:01:48,324 INFO L204 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] [2024-11-08 19:01:48,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 19:01:48,325 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-08 19:01:48,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:01:48,326 INFO L85 PathProgramCache]: Analyzing trace with hash -780586630, now seen corresponding path program 1 times [2024-11-08 19:01:48,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:01:48,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248697144] [2024-11-08 19:01:48,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:01:48,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:01:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:01:48,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:01:48,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:01:48,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248697144] [2024-11-08 19:01:48,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248697144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:01:48,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:01:48,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:01:48,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362746852] [2024-11-08 19:01:48,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:01:48,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:01:48,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:01:48,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:01:48,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:01:48,496 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 257 [2024-11-08 19:01:48,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 233 transitions, 504 flow. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:01:48,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:01:48,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 257 [2024-11-08 19:01:48,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:01:59,613 INFO L124 PetriNetUnfolderBase]: 23680/73181 cut-off events. [2024-11-08 19:01:59,614 INFO L125 PetriNetUnfolderBase]: For 511/511 co-relation queries the response was YES. [2024-11-08 19:01:59,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110487 conditions, 73181 events. 23680/73181 cut-off events. For 511/511 co-relation queries the response was YES. Maximal size of possible extension queue 1246. Compared 958905 event pairs, 9267 based on Foata normal form. 0/65695 useless extension candidates. Maximal degree in co-relation 106964. Up to 22148 conditions per place. [2024-11-08 19:02:00,101 INFO L140 encePairwiseOnDemand]: 224/257 looper letters, 96 selfloop transitions, 24 changer transitions 0/288 dead transitions. [2024-11-08 19:02:00,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 288 transitions, 865 flow [2024-11-08 19:02:00,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:02:00,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 19:02:00,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 636 transitions. [2024-11-08 19:02:00,106 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8249027237354085 [2024-11-08 19:02:00,107 INFO L175 Difference]: Start difference. First operand has 238 places, 233 transitions, 504 flow. Second operand 3 states and 636 transitions. [2024-11-08 19:02:00,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 288 transitions, 865 flow [2024-11-08 19:02:00,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 288 transitions, 853 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-08 19:02:00,117 INFO L231 Difference]: Finished difference. Result has 237 places, 257 transitions, 702 flow [2024-11-08 19:02:00,118 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=702, PETRI_PLACES=237, PETRI_TRANSITIONS=257} [2024-11-08 19:02:00,120 INFO L277 CegarLoopForPetriNet]: 234 programPoint places, 3 predicate places. [2024-11-08 19:02:00,120 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 257 transitions, 702 flow [2024-11-08 19:02:00,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:02:00,121 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:02:00,122 INFO L204 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] [2024-11-08 19:02:00,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 19:02:00,122 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-08 19:02:00,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:02:00,123 INFO L85 PathProgramCache]: Analyzing trace with hash 551811736, now seen corresponding path program 1 times [2024-11-08 19:02:00,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:02:00,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129381625] [2024-11-08 19:02:00,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:02:00,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:02:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:02:00,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:02:00,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:02:00,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129381625] [2024-11-08 19:02:00,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129381625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:02:00,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658386678] [2024-11-08 19:02:00,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:02:00,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:02:00,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:02:00,272 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:02:00,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 19:02:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:02:00,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 19:02:00,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:02:00,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 19:02:00,466 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:02:00,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658386678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:02:00,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 19:02:00,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-08 19:02:00,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769256234] [2024-11-08 19:02:00,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:02:00,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:02:00,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:02:00,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:02:00,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:02:00,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 257 [2024-11-08 19:02:00,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 257 transitions, 702 flow. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:02:00,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:02:00,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 257 [2024-11-08 19:02:00,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:02:12,196 INFO L124 PetriNetUnfolderBase]: 24782/80484 cut-off events. [2024-11-08 19:02:12,196 INFO L125 PetriNetUnfolderBase]: For 25704/26819 co-relation queries the response was YES. [2024-11-08 19:02:12,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143050 conditions, 80484 events. 24782/80484 cut-off events. For 25704/26819 co-relation queries the response was YES. Maximal size of possible extension queue 1374. Compared 1086633 event pairs, 15278 based on Foata normal form. 254/73302 useless extension candidates. Maximal degree in co-relation 138701. Up to 33230 conditions per place. [2024-11-08 19:02:12,677 INFO L140 encePairwiseOnDemand]: 243/257 looper letters, 86 selfloop transitions, 24 changer transitions 0/299 dead transitions. [2024-11-08 19:02:12,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 299 transitions, 1066 flow [2024-11-08 19:02:12,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:02:12,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 19:02:12,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 629 transitions. [2024-11-08 19:02:12,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8158236057068742 [2024-11-08 19:02:12,681 INFO L175 Difference]: Start difference. First operand has 237 places, 257 transitions, 702 flow. Second operand 3 states and 629 transitions. [2024-11-08 19:02:12,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 299 transitions, 1066 flow [2024-11-08 19:02:12,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 299 transitions, 998 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 19:02:12,787 INFO L231 Difference]: Finished difference. Result has 239 places, 279 transitions, 880 flow [2024-11-08 19:02:12,787 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=880, PETRI_PLACES=239, PETRI_TRANSITIONS=279} [2024-11-08 19:02:12,789 INFO L277 CegarLoopForPetriNet]: 234 programPoint places, 5 predicate places. [2024-11-08 19:02:12,792 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 279 transitions, 880 flow [2024-11-08 19:02:12,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:02:12,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:02:12,793 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:02:12,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 19:02:12,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:02:12,994 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-08 19:02:12,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:02:12,997 INFO L85 PathProgramCache]: Analyzing trace with hash -589698840, now seen corresponding path program 1 times [2024-11-08 19:02:12,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:02:12,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233923094] [2024-11-08 19:02:12,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:02:12,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:02:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:02:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:02:13,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:02:13,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233923094] [2024-11-08 19:02:13,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233923094] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:02:13,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335131943] [2024-11-08 19:02:13,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:02:13,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:02:13,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:02:13,379 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:02:13,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 19:02:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:02:13,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 19:02:13,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:02:13,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:02:13,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:02:13,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:02:13,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335131943] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:02:13,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:02:13,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-08 19:02:13,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96814607] [2024-11-08 19:02:13,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:02:13,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 19:02:13,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:02:13,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 19:02:13,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-08 19:02:13,784 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 257 [2024-11-08 19:02:13,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 279 transitions, 880 flow. Second operand has 10 states, 10 states have (on average 193.7) internal successors, (1937), 10 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:02:13,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:02:13,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 257 [2024-11-08 19:02:13,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:02:14,826 INFO L124 PetriNetUnfolderBase]: 2180/7311 cut-off events. [2024-11-08 19:02:14,826 INFO L125 PetriNetUnfolderBase]: For 464/526 co-relation queries the response was YES. [2024-11-08 19:02:14,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11686 conditions, 7311 events. 2180/7311 cut-off events. For 464/526 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 71927 event pairs, 188 based on Foata normal form. 508/7438 useless extension candidates. Maximal degree in co-relation 11678. Up to 1854 conditions per place. [2024-11-08 19:02:14,869 INFO L140 encePairwiseOnDemand]: 251/257 looper letters, 119 selfloop transitions, 7 changer transitions 0/263 dead transitions. [2024-11-08 19:02:14,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 263 transitions, 910 flow [2024-11-08 19:02:14,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 19:02:14,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-08 19:02:14,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1849 transitions. [2024-11-08 19:02:14,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7993947254647644 [2024-11-08 19:02:14,879 INFO L175 Difference]: Start difference. First operand has 239 places, 279 transitions, 880 flow. Second operand 9 states and 1849 transitions. [2024-11-08 19:02:14,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 263 transitions, 910 flow [2024-11-08 19:02:14,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 263 transitions, 870 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-11-08 19:02:14,891 INFO L231 Difference]: Finished difference. Result has 166 places, 169 transitions, 444 flow [2024-11-08 19:02:14,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=444, PETRI_PLACES=166, PETRI_TRANSITIONS=169} [2024-11-08 19:02:14,892 INFO L277 CegarLoopForPetriNet]: 234 programPoint places, -68 predicate places. [2024-11-08 19:02:14,892 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 169 transitions, 444 flow [2024-11-08 19:02:14,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 193.7) internal successors, (1937), 10 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:02:14,894 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:02:14,894 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:02:14,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 19:02:15,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57bdbe58-b426-49d3-a6ab-f338bfc31b4e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:02:15,095 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-08 19:02:15,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:02:15,096 INFO L85 PathProgramCache]: Analyzing trace with hash -60576456, now seen corresponding path program 1 times [2024-11-08 19:02:15,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:02:15,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136525403] [2024-11-08 19:02:15,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:02:15,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:02:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:02:15,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:02:15,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:02:15,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136525403] [2024-11-08 19:02:15,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136525403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:02:15,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:02:15,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:02:15,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457139934] [2024-11-08 19:02:15,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:02:15,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:02:15,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:02:15,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:02:15,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:02:15,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 257 [2024-11-08 19:02:15,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 169 transitions, 444 flow. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:02:15,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:02:15,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 257 [2024-11-08 19:02:15,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:02:15,252 INFO L124 PetriNetUnfolderBase]: 35/228 cut-off events. [2024-11-08 19:02:15,252 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-08 19:02:15,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 228 events. 35/228 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 802 event pairs, 32 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 356. Up to 79 conditions per place. [2024-11-08 19:02:15,254 INFO L140 encePairwiseOnDemand]: 254/257 looper letters, 12 selfloop transitions, 1 changer transitions 0/75 dead transitions. [2024-11-08 19:02:15,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 75 transitions, 218 flow [2024-11-08 19:02:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:02:15,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 19:02:15,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 588 transitions. [2024-11-08 19:02:15,257 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7626459143968871 [2024-11-08 19:02:15,257 INFO L175 Difference]: Start difference. First operand has 166 places, 169 transitions, 444 flow. Second operand 3 states and 588 transitions. [2024-11-08 19:02:15,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 75 transitions, 218 flow [2024-11-08 19:02:15,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 75 transitions, 203 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-08 19:02:15,260 INFO L231 Difference]: Finished difference. Result has 85 places, 75 transitions, 179 flow [2024-11-08 19:02:15,261 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=85, PETRI_TRANSITIONS=75} [2024-11-08 19:02:15,261 INFO L277 CegarLoopForPetriNet]: 234 programPoint places, -149 predicate places. [2024-11-08 19:02:15,261 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 75 transitions, 179 flow [2024-11-08 19:02:15,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:02:15,262 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:02:15,263 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 19:02:15,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 19:02:15,264 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-08 19:02:15,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:02:15,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1715641377, now seen corresponding path program 1 times [2024-11-08 19:02:15,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:02:15,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364824771] [2024-11-08 19:02:15,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:02:15,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:02:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:02:15,298 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 19:02:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:02:15,337 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 19:02:15,338 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 19:02:15,338 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-11-08 19:02:15,338 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2024-11-08 19:02:15,338 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2024-11-08 19:02:15,339 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2024-11-08 19:02:15,339 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2024-11-08 19:02:15,339 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2024-11-08 19:02:15,339 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2024-11-08 19:02:15,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2024-11-08 19:02:15,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2024-11-08 19:02:15,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2024-11-08 19:02:15,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2024-11-08 19:02:15,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2024-11-08 19:02:15,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2024-11-08 19:02:15,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2024-11-08 19:02:15,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2024-11-08 19:02:15,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2024-11-08 19:02:15,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2024-11-08 19:02:15,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2024-11-08 19:02:15,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2024-11-08 19:02:15,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2024-11-08 19:02:15,343 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2024-11-08 19:02:15,343 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2024-11-08 19:02:15,343 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2024-11-08 19:02:15,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 19:02:15,344 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:02:15,345 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 19:02:15,345 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-08 19:02:15,405 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 19:02:15,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 319 transitions, 665 flow [2024-11-08 19:02:15,669 INFO L124 PetriNetUnfolderBase]: 81/727 cut-off events. [2024-11-08 19:02:15,669 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-08 19:02:15,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 727 events. 81/727 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3265 event pairs, 1 based on Foata normal form. 0/595 useless extension candidates. Maximal degree in co-relation 496. Up to 16 conditions per place. [2024-11-08 19:02:15,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 290 places, 319 transitions, 665 flow [2024-11-08 19:02:15,684 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 290 places, 319 transitions, 665 flow [2024-11-08 19:02:15,685 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:02:15,686 INFO L333 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, 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;@18c37417, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:02:15,686 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-11-08 19:02:15,692 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 19:02:15,692 INFO L124 PetriNetUnfolderBase]: 3/52 cut-off events. [2024-11-08 19:02:15,692 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 19:02:15,692 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:02:15,693 INFO L204 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] [2024-11-08 19:02:15,693 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-11-08 19:02:15,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:02:15,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1067645727, now seen corresponding path program 1 times [2024-11-08 19:02:15,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:02:15,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617122253] [2024-11-08 19:02:15,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:02:15,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:02:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:02:15,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:02:15,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:02:15,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617122253] [2024-11-08 19:02:15,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617122253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:02:15,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:02:15,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:02:15,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583190347] [2024-11-08 19:02:15,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:02:15,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:02:15,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:02:15,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:02:15,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:02:15,783 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 319 [2024-11-08 19:02:15,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 319 transitions, 665 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:02:15,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:02:15,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 319 [2024-11-08 19:02:15,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand