./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b 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_df7da994-482a-4acd-a974-fa864a824432/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df7da994-482a-4acd-a974-fa864a824432/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df7da994-482a-4acd-a974-fa864a824432/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df7da994-482a-4acd-a974-fa864a824432/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df7da994-482a-4acd-a974-fa864a824432/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df7da994-482a-4acd-a974-fa864a824432/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:02:27,520 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:02:27,591 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df7da994-482a-4acd-a974-fa864a824432/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:02:27,597 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:02:27,598 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:02:27,623 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:02:27,624 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:02:27,624 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:02:27,625 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:02:27,626 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:02:27,627 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:02:27,628 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:02:27,628 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:02:27,629 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:02:27,629 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:02:27,630 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:02:27,631 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:02:27,631 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:02:27,632 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:02:27,632 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:02:27,633 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:02:27,641 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:02:27,641 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:02:27,642 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:02:27,642 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:02:27,643 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:02:27,643 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:02:27,643 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:02:27,644 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:02:27,644 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:02:27,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:02:27,645 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:02:27,646 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:02:27,646 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:02:27,647 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:02:27,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:02:27,647 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:02:27,648 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:02:27,648 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:02:27,649 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:02:27,649 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:02:27,651 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_df7da994-482a-4acd-a974-fa864a824432/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df7da994-482a-4acd-a974-fa864a824432/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 [2023-11-06 22:02:27,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:02:27,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:02:27,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:02:27,983 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:02:27,984 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:02:27,985 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df7da994-482a-4acd-a974-fa864a824432/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2023-11-06 22:02:31,079 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:02:31,475 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:02:31,475 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df7da994-482a-4acd-a974-fa864a824432/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2023-11-06 22:02:31,497 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df7da994-482a-4acd-a974-fa864a824432/bin/uautomizer-verify-WvqO1wxjHP/data/20125867b/1a2cafa96a174c73b07d61dafc1eac6c/FLAG4613c1b2e [2023-11-06 22:02:31,518 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df7da994-482a-4acd-a974-fa864a824432/bin/uautomizer-verify-WvqO1wxjHP/data/20125867b/1a2cafa96a174c73b07d61dafc1eac6c [2023-11-06 22:02:31,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:02:31,529 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:02:31,534 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:02:31,534 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:02:31,539 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:02:31,543 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:02:31" (1/1) ... [2023-11-06 22:02:31,544 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347ad8a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:31, skipping insertion in model container [2023-11-06 22:02:31,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:02:31" (1/1) ... [2023-11-06 22:02:31,595 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:02:32,180 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:02:32,194 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:02:32,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:02:32,326 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:02:32,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:32 WrapperNode [2023-11-06 22:02:32,327 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:02:32,328 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:02:32,328 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:02:32,328 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:02:32,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:32" (1/1) ... [2023-11-06 22:02:32,361 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:32" (1/1) ... [2023-11-06 22:02:32,409 INFO L138 Inliner]: procedures = 278, calls = 62, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 320 [2023-11-06 22:02:32,410 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:02:32,411 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:02:32,411 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:02:32,411 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:02:32,420 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:32" (1/1) ... [2023-11-06 22:02:32,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:32" (1/1) ... [2023-11-06 22:02:32,429 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:32" (1/1) ... [2023-11-06 22:02:32,429 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:32" (1/1) ... [2023-11-06 22:02:32,467 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:32" (1/1) ... [2023-11-06 22:02:32,473 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:32" (1/1) ... [2023-11-06 22:02:32,476 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:32" (1/1) ... [2023-11-06 22:02:32,479 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:32" (1/1) ... [2023-11-06 22:02:32,486 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:02:32,487 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:02:32,487 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:02:32,487 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:02:32,488 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:32" (1/1) ... [2023-11-06 22:02:32,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:02:32,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df7da994-482a-4acd-a974-fa864a824432/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:32,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df7da994-482a-4acd-a974-fa864a824432/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:02:32,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df7da994-482a-4acd-a974-fa864a824432/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:02:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:02:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:02:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-06 22:02:32,578 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-06 22:02:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:02:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:02:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-06 22:02:32,579 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-06 22:02:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:02:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:02:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:02:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:02:32,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:02:32,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:02:32,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:02:32,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:02:32,582 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:02:32,743 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:02:32,745 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:02:33,355 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:02:33,369 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:02:33,369 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-11-06 22:02:33,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:02:33 BoogieIcfgContainer [2023-11-06 22:02:33,372 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:02:33,375 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:02:33,375 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:02:33,378 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:02:33,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:02:31" (1/3) ... [2023-11-06 22:02:33,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f79c6c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:02:33, skipping insertion in model container [2023-11-06 22:02:33,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:02:32" (2/3) ... [2023-11-06 22:02:33,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f79c6c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:02:33, skipping insertion in model container [2023-11-06 22:02:33,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:02:33" (3/3) ... [2023-11-06 22:02:33,382 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2023-11-06 22:02:33,391 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:02:33,403 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:02:33,403 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-06 22:02:33,403 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:02:33,594 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 22:02:33,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 353 transitions, 726 flow [2023-11-06 22:02:34,028 INFO L124 PetriNetUnfolderBase]: 54/651 cut-off events. [2023-11-06 22:02:34,029 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 22:02:34,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 651 events. 54/651 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3009 event pairs, 0 based on Foata normal form. 0/555 useless extension candidates. Maximal degree in co-relation 326. Up to 8 conditions per place. [2023-11-06 22:02:34,048 INFO L82 GeneralOperation]: Start removeDead. Operand has 334 places, 353 transitions, 726 flow [2023-11-06 22:02:34,065 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 334 places, 353 transitions, 726 flow [2023-11-06 22:02:34,069 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:02:34,096 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 334 places, 353 transitions, 726 flow [2023-11-06 22:02:34,100 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 334 places, 353 transitions, 726 flow [2023-11-06 22:02:34,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 353 transitions, 726 flow [2023-11-06 22:02:34,273 INFO L124 PetriNetUnfolderBase]: 54/651 cut-off events. [2023-11-06 22:02:34,273 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 22:02:34,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 651 events. 54/651 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3009 event pairs, 0 based on Foata normal form. 0/555 useless extension candidates. Maximal degree in co-relation 326. Up to 8 conditions per place. [2023-11-06 22:02:34,327 INFO L119 LiptonReduction]: Number of co-enabled transitions 45326 [2023-11-06 22:02:53,291 WARN L293 SmtUtils]: Spent 8.16s on a formula simplification. DAG size of input: 203 DAG size of output: 201 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:03:03,689 WARN L293 SmtUtils]: Spent 9.73s on a formula simplification. DAG size of input: 203 DAG size of output: 201 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:03:06,788 INFO L134 LiptonReduction]: Checked pairs total: 231194 [2023-11-06 22:03:06,788 INFO L136 LiptonReduction]: Total number of compositions: 236 [2023-11-06 22:03:06,803 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:03:06,808 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@29b7f5c2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:03:06,808 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-11-06 22:03:06,810 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:03:06,810 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:03:06,810 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:03:06,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:06,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:03:06,812 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-06 22:03:06,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:06,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2023-11-06 22:03:06,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:06,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802482457] [2023-11-06 22:03:06,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:06,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:06,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:06,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802482457] [2023-11-06 22:03:06,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802482457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:03:06,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:03:06,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:03:06,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92824390] [2023-11-06 22:03:06,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:03:06,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:03:06,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:07,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:03:07,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:03:07,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 589 [2023-11-06 22:03:07,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 158 transitions, 336 flow. Second operand has 2 states, 2 states have (on average 329.5) internal successors, (659), 2 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:07,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:07,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 589 [2023-11-06 22:03:07,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:03:09,984 INFO L124 PetriNetUnfolderBase]: 6556/16711 cut-off events. [2023-11-06 22:03:09,984 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2023-11-06 22:03:10,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26952 conditions, 16711 events. 6556/16711 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 157211 event pairs, 6182 based on Foata normal form. 584/15293 useless extension candidates. Maximal degree in co-relation 25294. Up to 10122 conditions per place. [2023-11-06 22:03:10,307 INFO L140 encePairwiseOnDemand]: 574/589 looper letters, 58 selfloop transitions, 0 changer transitions 0/143 dead transitions. [2023-11-06 22:03:10,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 143 transitions, 422 flow [2023-11-06 22:03:10,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:03:10,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:03:10,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 731 transitions. [2023-11-06 22:03:10,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6205432937181664 [2023-11-06 22:03:10,354 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 731 transitions. [2023-11-06 22:03:10,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 731 transitions. [2023-11-06 22:03:10,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:03:10,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 731 transitions. [2023-11-06 22:03:10,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 365.5) internal successors, (731), 2 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:10,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 589.0) internal successors, (1767), 3 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:10,382 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 589.0) internal successors, (1767), 3 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:10,384 INFO L175 Difference]: Start difference. First operand has 146 places, 158 transitions, 336 flow. Second operand 2 states and 731 transitions. [2023-11-06 22:03:10,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 143 transitions, 422 flow [2023-11-06 22:03:10,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 143 transitions, 422 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:03:10,405 INFO L231 Difference]: Finished difference. Result has 143 places, 143 transitions, 306 flow [2023-11-06 22:03:10,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=306, PETRI_PLACES=143, PETRI_TRANSITIONS=143} [2023-11-06 22:03:10,411 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, -3 predicate places. [2023-11-06 22:03:10,411 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 143 transitions, 306 flow [2023-11-06 22:03:10,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 329.5) internal successors, (659), 2 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:10,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:10,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:03:10,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:03:10,413 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-06 22:03:10,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:10,414 INFO L85 PathProgramCache]: Analyzing trace with hash -663198291, now seen corresponding path program 1 times [2023-11-06 22:03:10,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:10,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266052275] [2023-11-06 22:03:10,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:10,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:10,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:10,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:10,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266052275] [2023-11-06 22:03:10,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266052275] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:03:10,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:03:10,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:03:10,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525597076] [2023-11-06 22:03:10,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:03:10,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:03:10,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:10,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:03:10,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:03:10,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 589 [2023-11-06 22:03:10,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 143 transitions, 306 flow. Second operand has 3 states, 3 states have (on average 324.6666666666667) internal successors, (974), 3 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:10,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:10,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 589 [2023-11-06 22:03:10,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:03:13,286 INFO L124 PetriNetUnfolderBase]: 6479/16622 cut-off events. [2023-11-06 22:03:13,286 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2023-11-06 22:03:13,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26714 conditions, 16622 events. 6479/16622 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 156713 event pairs, 5668 based on Foata normal form. 0/14700 useless extension candidates. Maximal degree in co-relation 26709. Up to 9957 conditions per place. [2023-11-06 22:03:13,413 INFO L140 encePairwiseOnDemand]: 586/589 looper letters, 71 selfloop transitions, 2 changer transitions 0/158 dead transitions. [2023-11-06 22:03:13,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 158 transitions, 482 flow [2023-11-06 22:03:13,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:03:13,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:03:13,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1043 transitions. [2023-11-06 22:03:13,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.590265987549519 [2023-11-06 22:03:13,419 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1043 transitions. [2023-11-06 22:03:13,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1043 transitions. [2023-11-06 22:03:13,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:03:13,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1043 transitions. [2023-11-06 22:03:13,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 347.6666666666667) internal successors, (1043), 3 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:13,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:13,435 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:13,435 INFO L175 Difference]: Start difference. First operand has 143 places, 143 transitions, 306 flow. Second operand 3 states and 1043 transitions. [2023-11-06 22:03:13,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 158 transitions, 482 flow [2023-11-06 22:03:13,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 158 transitions, 482 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:03:13,445 INFO L231 Difference]: Finished difference. Result has 146 places, 143 transitions, 314 flow [2023-11-06 22:03:13,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=146, PETRI_TRANSITIONS=143} [2023-11-06 22:03:13,446 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, 0 predicate places. [2023-11-06 22:03:13,447 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 143 transitions, 314 flow [2023-11-06 22:03:13,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 324.6666666666667) internal successors, (974), 3 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:13,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:13,448 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:03:13,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:03:13,449 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-06 22:03:13,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:13,450 INFO L85 PathProgramCache]: Analyzing trace with hash -680413589, now seen corresponding path program 1 times [2023-11-06 22:03:13,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:13,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719095687] [2023-11-06 22:03:13,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:13,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:03:13,541 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:03:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:03:13,633 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:03:13,635 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:03:13,637 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2023-11-06 22:03:13,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2023-11-06 22:03:13,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2023-11-06 22:03:13,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2023-11-06 22:03:13,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2023-11-06 22:03:13,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2023-11-06 22:03:13,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2023-11-06 22:03:13,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2023-11-06 22:03:13,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2023-11-06 22:03:13,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2023-11-06 22:03:13,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2023-11-06 22:03:13,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2023-11-06 22:03:13,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2023-11-06 22:03:13,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2023-11-06 22:03:13,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2023-11-06 22:03:13,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 36 remaining) [2023-11-06 22:03:13,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2023-11-06 22:03:13,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2023-11-06 22:03:13,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2023-11-06 22:03:13,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2023-11-06 22:03:13,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2023-11-06 22:03:13,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2023-11-06 22:03:13,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2023-11-06 22:03:13,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2023-11-06 22:03:13,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2023-11-06 22:03:13,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2023-11-06 22:03:13,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2023-11-06 22:03:13,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2023-11-06 22:03:13,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2023-11-06 22:03:13,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2023-11-06 22:03:13,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2023-11-06 22:03:13,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2023-11-06 22:03:13,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2023-11-06 22:03:13,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2023-11-06 22:03:13,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2023-11-06 22:03:13,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2023-11-06 22:03:13,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:03:13,661 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-06 22:03:13,664 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:03:13,664 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:03:13,813 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-06 22:03:13,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 537 places, 572 transitions, 1188 flow [2023-11-06 22:03:14,772 INFO L124 PetriNetUnfolderBase]: 197/1903 cut-off events. [2023-11-06 22:03:14,772 INFO L125 PetriNetUnfolderBase]: For 72/90 co-relation queries the response was YES. [2023-11-06 22:03:14,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1992 conditions, 1903 events. 197/1903 cut-off events. For 72/90 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 13410 event pairs, 1 based on Foata normal form. 0/1609 useless extension candidates. Maximal degree in co-relation 1176. Up to 32 conditions per place. [2023-11-06 22:03:14,809 INFO L82 GeneralOperation]: Start removeDead. Operand has 537 places, 572 transitions, 1188 flow [2023-11-06 22:03:14,834 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 537 places, 572 transitions, 1188 flow [2023-11-06 22:03:14,835 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:03:14,835 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 537 places, 572 transitions, 1188 flow [2023-11-06 22:03:14,835 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 537 places, 572 transitions, 1188 flow [2023-11-06 22:03:14,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 537 places, 572 transitions, 1188 flow [2023-11-06 22:03:15,488 INFO L124 PetriNetUnfolderBase]: 197/1903 cut-off events. [2023-11-06 22:03:15,489 INFO L125 PetriNetUnfolderBase]: For 72/90 co-relation queries the response was YES. [2023-11-06 22:03:15,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1992 conditions, 1903 events. 197/1903 cut-off events. For 72/90 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 13410 event pairs, 1 based on Foata normal form. 0/1609 useless extension candidates. Maximal degree in co-relation 1176. Up to 32 conditions per place. [2023-11-06 22:03:15,760 INFO L119 LiptonReduction]: Number of co-enabled transitions 185496 [2023-11-06 22:03:41,513 WARN L293 SmtUtils]: Spent 8.41s on a formula simplification. DAG size of input: 206 DAG size of output: 201 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:03:48,611 WARN L293 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 206 DAG size of output: 201 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:03:51,639 INFO L134 LiptonReduction]: Checked pairs total: 1117559 [2023-11-06 22:03:51,639 INFO L136 LiptonReduction]: Total number of compositions: 350 [2023-11-06 22:03:51,647 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:03:51,647 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@29b7f5c2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:03:51,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2023-11-06 22:03:51,648 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:03:51,648 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:03:51,649 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:03:51,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:51,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:03:51,649 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-06 22:03:51,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:51,650 INFO L85 PathProgramCache]: Analyzing trace with hash 2422, now seen corresponding path program 1 times [2023-11-06 22:03:51,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:51,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002850781] [2023-11-06 22:03:51,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:51,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:51,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:51,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:51,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002850781] [2023-11-06 22:03:51,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002850781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:03:51,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:03:51,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:03:51,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666983289] [2023-11-06 22:03:51,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:03:51,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:03:51,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:51,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:03:51,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:03:51,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 528 out of 922 [2023-11-06 22:03:51,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 286 transitions, 616 flow. Second operand has 2 states, 2 states have (on average 528.5) internal successors, (1057), 2 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:51,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:51,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 528 of 922 [2023-11-06 22:03:51,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand