./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.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_17acc1c9-8788-4d32-85d5-7877cc8d2817/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/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_17acc1c9-8788-4d32-85d5-7877cc8d2817/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/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_17acc1c9-8788-4d32-85d5-7877cc8d2817/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 db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:14:37,178 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:14:37,299 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 21:14:37,313 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:14:37,314 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:14:37,357 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:14:37,357 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:14:37,358 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:14:37,359 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:14:37,364 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:14:37,365 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:14:37,365 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:14:37,366 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:14:37,368 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:14:37,368 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:14:37,368 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:14:37,369 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:14:37,369 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:14:37,370 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:14:37,370 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:14:37,370 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:14:37,371 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:14:37,371 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 21:14:37,373 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:14:37,373 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:14:37,374 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:14:37,374 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:14:37,375 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:14:37,376 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:14:37,376 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:14:37,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:14:37,378 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:14:37,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:14:37,378 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:14:37,378 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:14:37,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:14:37,379 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:14:37,379 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:14:37,379 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:14:37,379 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:14:37,380 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:14:37,380 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_17acc1c9-8788-4d32-85d5-7877cc8d2817/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a [2023-11-06 21:14:37,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:14:37,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:14:37,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:14:37,715 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:14:37,715 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:14:37,717 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2023-11-06 21:14:40,764 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:14:41,132 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:14:41,133 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2023-11-06 21:14:41,155 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/bin/uautomizer-verify-WvqO1wxjHP/data/c08962162/9e67dd22a8b24e29b6fd1096f8f39529/FLAG77a1a112a [2023-11-06 21:14:41,171 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/bin/uautomizer-verify-WvqO1wxjHP/data/c08962162/9e67dd22a8b24e29b6fd1096f8f39529 [2023-11-06 21:14:41,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:14:41,177 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:14:41,182 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:41,183 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:14:41,188 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:14:41,189 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:41" (1/1) ... [2023-11-06 21:14:41,191 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37b53999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:41, skipping insertion in model container [2023-11-06 21:14:41,191 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:41" (1/1) ... [2023-11-06 21:14:41,257 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:14:41,985 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:42,092 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:14:42,193 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:42,295 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:14:42,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:42 WrapperNode [2023-11-06 21:14:42,295 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:42,297 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:42,297 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:14:42,298 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:14:42,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:42" (1/1) ... [2023-11-06 21:14:42,349 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:42" (1/1) ... [2023-11-06 21:14:42,406 INFO L138 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 352 [2023-11-06 21:14:42,407 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:42,408 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:14:42,408 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:14:42,408 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:14:42,417 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:42" (1/1) ... [2023-11-06 21:14:42,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:42" (1/1) ... [2023-11-06 21:14:42,424 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:42" (1/1) ... [2023-11-06 21:14:42,425 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:42" (1/1) ... [2023-11-06 21:14:42,451 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:42" (1/1) ... [2023-11-06 21:14:42,457 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:42" (1/1) ... [2023-11-06 21:14:42,461 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:42" (1/1) ... [2023-11-06 21:14:42,465 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:42" (1/1) ... [2023-11-06 21:14:42,477 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:14:42,478 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:14:42,478 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:14:42,479 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:14:42,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:42" (1/1) ... [2023-11-06 21:14:42,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:14:42,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:42,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:42,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:14:42,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:14:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 21:14:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-06 21:14:42,560 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-06 21:14:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:14:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:14:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-06 21:14:42,561 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-06 21:14:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:14:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 21:14:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:14:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:14:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 21:14:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:14:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:14:42,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:14:42,564 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 21:14:42,748 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:14:42,750 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:14:43,570 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:14:43,592 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:14:43,593 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-06 21:14:43,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:43 BoogieIcfgContainer [2023-11-06 21:14:43,598 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:14:43,601 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:14:43,602 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:14:43,605 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:14:43,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:14:41" (1/3) ... [2023-11-06 21:14:43,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd9b71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:14:43, skipping insertion in model container [2023-11-06 21:14:43,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:42" (2/3) ... [2023-11-06 21:14:43,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd9b71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:14:43, skipping insertion in model container [2023-11-06 21:14:43,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:43" (3/3) ... [2023-11-06 21:14:43,611 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2023-11-06 21:14:43,621 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 21:14:43,633 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:14:43,633 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-11-06 21:14:43,634 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:14:43,824 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 21:14:43,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 362 places, 383 transitions, 786 flow [2023-11-06 21:14:44,151 INFO L124 PetriNetUnfolderBase]: 56/694 cut-off events. [2023-11-06 21:14:44,151 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 21:14:44,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 694 events. 56/694 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3277 event pairs, 0 based on Foata normal form. 0/597 useless extension candidates. Maximal degree in co-relation 348. Up to 8 conditions per place. [2023-11-06 21:14:44,174 INFO L82 GeneralOperation]: Start removeDead. Operand has 362 places, 383 transitions, 786 flow [2023-11-06 21:14:44,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 362 places, 383 transitions, 786 flow [2023-11-06 21:14:44,191 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:14:44,205 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 362 places, 383 transitions, 786 flow [2023-11-06 21:14:44,210 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 362 places, 383 transitions, 786 flow [2023-11-06 21:14:44,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 362 places, 383 transitions, 786 flow [2023-11-06 21:14:44,385 INFO L124 PetriNetUnfolderBase]: 56/694 cut-off events. [2023-11-06 21:14:44,385 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 21:14:44,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 694 events. 56/694 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3277 event pairs, 0 based on Foata normal form. 0/597 useless extension candidates. Maximal degree in co-relation 348. Up to 8 conditions per place. [2023-11-06 21:14:44,439 INFO L119 LiptonReduction]: Number of co-enabled transitions 52646 [2023-11-06 21:15:07,624 WARN L293 SmtUtils]: Spent 8.92s on a formula simplification. DAG size of input: 137 DAG size of output: 133 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 21:15:19,512 WARN L293 SmtUtils]: Spent 11.29s on a formula simplification. DAG size of input: 137 DAG size of output: 133 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 21:15:26,652 WARN L293 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 133 DAG size of output: 130 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 21:15:38,253 WARN L293 SmtUtils]: Spent 8.24s on a formula simplification. DAG size of input: 133 DAG size of output: 130 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 21:15:42,195 INFO L134 LiptonReduction]: Checked pairs total: 237280 [2023-11-06 21:15:42,196 INFO L136 LiptonReduction]: Total number of compositions: 252 [2023-11-06 21:15:42,211 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:15:42,217 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;@76ad3a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:15:42,217 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-11-06 21:15:42,220 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:15:42,220 INFO L124 PetriNetUnfolderBase]: 1/3 cut-off events. [2023-11-06 21:15:42,221 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:15:42,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:42,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 21:15:42,222 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 31 more)] === [2023-11-06 21:15:42,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:42,227 INFO L85 PathProgramCache]: Analyzing trace with hash 44542, now seen corresponding path program 1 times [2023-11-06 21:15:42,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:42,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684024313] [2023-11-06 21:15:42,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:42,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:42,512 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 21:15:42,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:42,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684024313] [2023-11-06 21:15:42,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684024313] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:42,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:42,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:15:42,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944923598] [2023-11-06 21:15:42,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:42,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:15:42,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:42,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:15:42,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:15:42,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 358 out of 635 [2023-11-06 21:15:42,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 168 transitions, 356 flow. Second operand has 2 states, 2 states have (on average 359.0) internal successors, (718), 2 states have internal predecessors, (718), 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 21:15:42,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:42,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 358 of 635 [2023-11-06 21:15:42,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:46,500 INFO L124 PetriNetUnfolderBase]: 7853/19760 cut-off events. [2023-11-06 21:15:46,500 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2023-11-06 21:15:46,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31971 conditions, 19760 events. 7853/19760 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 186841 event pairs, 7418 based on Foata normal form. 692/18165 useless extension candidates. Maximal degree in co-relation 30290. Up to 12080 conditions per place. [2023-11-06 21:15:46,681 INFO L140 encePairwiseOnDemand]: 621/635 looper letters, 63 selfloop transitions, 0 changer transitions 0/153 dead transitions. [2023-11-06 21:15:46,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 153 transitions, 452 flow [2023-11-06 21:15:46,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:15:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 21:15:46,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 793 transitions. [2023-11-06 21:15:46,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6244094488188976 [2023-11-06 21:15:46,701 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 793 transitions. [2023-11-06 21:15:46,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 793 transitions. [2023-11-06 21:15:46,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:46,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 793 transitions. [2023-11-06 21:15:46,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 396.5) internal successors, (793), 2 states have internal predecessors, (793), 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 21:15:46,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 635.0) internal successors, (1905), 3 states have internal predecessors, (1905), 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 21:15:46,727 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 635.0) internal successors, (1905), 3 states have internal predecessors, (1905), 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 21:15:46,730 INFO L175 Difference]: Start difference. First operand has 155 places, 168 transitions, 356 flow. Second operand 2 states and 793 transitions. [2023-11-06 21:15:46,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 153 transitions, 452 flow [2023-11-06 21:15:46,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 153 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:15:46,752 INFO L231 Difference]: Finished difference. Result has 152 places, 153 transitions, 326 flow [2023-11-06 21:15:46,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=635, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=326, PETRI_PLACES=152, PETRI_TRANSITIONS=153} [2023-11-06 21:15:46,758 INFO L281 CegarLoopForPetriNet]: 155 programPoint places, -3 predicate places. [2023-11-06 21:15:46,758 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 153 transitions, 326 flow [2023-11-06 21:15:46,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 359.0) internal successors, (718), 2 states have internal predecessors, (718), 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 21:15:46,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:46,760 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-06 21:15:46,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:15:46,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-11-06 21:15:46,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:46,762 INFO L85 PathProgramCache]: Analyzing trace with hash -460902470, now seen corresponding path program 1 times [2023-11-06 21:15:46,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:46,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896640173] [2023-11-06 21:15:46,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:46,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:46,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:15:46,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:46,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896640173] [2023-11-06 21:15:46,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896640173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:46,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:46,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:15:46,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397036363] [2023-11-06 21:15:46,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:46,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:46,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:46,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:46,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:46,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 352 out of 635 [2023-11-06 21:15:46,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 153 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 353.6666666666667) internal successors, (1061), 3 states have internal predecessors, (1061), 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 21:15:46,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:46,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 352 of 635 [2023-11-06 21:15:46,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:50,241 INFO L124 PetriNetUnfolderBase]: 7853/19761 cut-off events. [2023-11-06 21:15:50,242 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2023-11-06 21:15:50,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31974 conditions, 19761 events. 7853/19761 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 186970 event pairs, 7418 based on Foata normal form. 0/17474 useless extension candidates. Maximal degree in co-relation 31969. Up to 12080 conditions per place. [2023-11-06 21:15:50,359 INFO L140 encePairwiseOnDemand]: 632/635 looper letters, 62 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2023-11-06 21:15:50,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 154 transitions, 456 flow [2023-11-06 21:15:50,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:50,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:15:50,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1121 transitions. [2023-11-06 21:15:50,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5884514435695538 [2023-11-06 21:15:50,366 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1121 transitions. [2023-11-06 21:15:50,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1121 transitions. [2023-11-06 21:15:50,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:50,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1121 transitions. [2023-11-06 21:15:50,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 373.6666666666667) internal successors, (1121), 3 states have internal predecessors, (1121), 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 21:15:50,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 635.0) internal successors, (2540), 4 states have internal predecessors, (2540), 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 21:15:50,380 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 635.0) internal successors, (2540), 4 states have internal predecessors, (2540), 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 21:15:50,381 INFO L175 Difference]: Start difference. First operand has 152 places, 153 transitions, 326 flow. Second operand 3 states and 1121 transitions. [2023-11-06 21:15:50,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 154 transitions, 456 flow [2023-11-06 21:15:50,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 154 transitions, 456 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:15:50,403 INFO L231 Difference]: Finished difference. Result has 155 places, 154 transitions, 338 flow [2023-11-06 21:15:50,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=635, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=155, PETRI_TRANSITIONS=154} [2023-11-06 21:15:50,405 INFO L281 CegarLoopForPetriNet]: 155 programPoint places, 0 predicate places. [2023-11-06 21:15:50,405 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 154 transitions, 338 flow [2023-11-06 21:15:50,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 353.6666666666667) internal successors, (1061), 3 states have internal predecessors, (1061), 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 21:15:50,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:50,408 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:50,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:15:50,409 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 31 more)] === [2023-11-06 21:15:50,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:50,414 INFO L85 PathProgramCache]: Analyzing trace with hash 649568972, now seen corresponding path program 1 times [2023-11-06 21:15:50,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:50,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422644943] [2023-11-06 21:15:50,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:50,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:50,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:15:50,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:50,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422644943] [2023-11-06 21:15:50,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422644943] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:50,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498047394] [2023-11-06 21:15:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:50,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:50,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:50,639 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:50,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:15:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:50,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:15:50,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:50,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:15:50,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:15:50,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:15:50,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498047394] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:15:50,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:15:50,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 21:15:50,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310651811] [2023-11-06 21:15:50,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:15:50,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:15:50,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:50,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:15:50,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:15:50,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 635 [2023-11-06 21:15:50,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 154 transitions, 338 flow. Second operand has 7 states, 7 states have (on average 352.57142857142856) internal successors, (2468), 7 states have internal predecessors, (2468), 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 21:15:50,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:50,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 635 [2023-11-06 21:15:50,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:53,924 INFO L124 PetriNetUnfolderBase]: 7853/19764 cut-off events. [2023-11-06 21:15:53,924 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2023-11-06 21:15:53,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31990 conditions, 19764 events. 7853/19764 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 186771 event pairs, 7418 based on Foata normal form. 0/17477 useless extension candidates. Maximal degree in co-relation 31983. Up to 12080 conditions per place. [2023-11-06 21:15:54,033 INFO L140 encePairwiseOnDemand]: 632/635 looper letters, 62 selfloop transitions, 5 changer transitions 0/157 dead transitions. [2023-11-06 21:15:54,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 157 transitions, 484 flow [2023-11-06 21:15:54,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:15:54,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:15:54,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2176 transitions. [2023-11-06 21:15:54,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5711286089238845 [2023-11-06 21:15:54,042 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2176 transitions. [2023-11-06 21:15:54,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2176 transitions. [2023-11-06 21:15:54,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:54,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2176 transitions. [2023-11-06 21:15:54,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 362.6666666666667) internal successors, (2176), 6 states have internal predecessors, (2176), 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 21:15:54,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 635.0) internal successors, (4445), 7 states have internal predecessors, (4445), 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 21:15:54,067 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 635.0) internal successors, (4445), 7 states have internal predecessors, (4445), 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 21:15:54,068 INFO L175 Difference]: Start difference. First operand has 155 places, 154 transitions, 338 flow. Second operand 6 states and 2176 transitions. [2023-11-06 21:15:54,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 157 transitions, 484 flow [2023-11-06 21:15:54,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 157 transitions, 480 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 21:15:54,078 INFO L231 Difference]: Finished difference. Result has 162 places, 157 transitions, 370 flow [2023-11-06 21:15:54,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=635, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=370, PETRI_PLACES=162, PETRI_TRANSITIONS=157} [2023-11-06 21:15:54,080 INFO L281 CegarLoopForPetriNet]: 155 programPoint places, 7 predicate places. [2023-11-06 21:15:54,081 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 157 transitions, 370 flow [2023-11-06 21:15:54,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 352.57142857142856) internal successors, (2468), 7 states have internal predecessors, (2468), 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 21:15:54,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:54,083 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-06 21:15:54,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:54,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:54,290 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-11-06 21:15:54,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:54,291 INFO L85 PathProgramCache]: Analyzing trace with hash 647259194, now seen corresponding path program 2 times [2023-11-06 21:15:54,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:54,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667154164] [2023-11-06 21:15:54,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:54,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:54,602 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:15:54,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:54,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667154164] [2023-11-06 21:15:54,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667154164] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:54,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983757451] [2023-11-06 21:15:54,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:15:54,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:54,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:54,605 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:54,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:15:54,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:15:54,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:15:54,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 21:15:54,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:54,895 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:15:54,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:15:54,964 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:15:54,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983757451] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:15:54,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:15:54,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 21:15:54,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039328644] [2023-11-06 21:15:54,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:15:54,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 21:15:54,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:54,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 21:15:54,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:15:55,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 635 [2023-11-06 21:15:55,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 157 transitions, 370 flow. Second operand has 13 states, 13 states have (on average 352.3076923076923) internal successors, (4580), 13 states have internal predecessors, (4580), 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 21:15:55,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:55,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 635 [2023-11-06 21:15:55,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:58,624 INFO L124 PetriNetUnfolderBase]: 7853/19770 cut-off events. [2023-11-06 21:15:58,625 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2023-11-06 21:15:58,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32027 conditions, 19770 events. 7853/19770 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 186903 event pairs, 7418 based on Foata normal form. 6/17490 useless extension candidates. Maximal degree in co-relation 32017. Up to 12080 conditions per place. [2023-11-06 21:15:58,737 INFO L140 encePairwiseOnDemand]: 632/635 looper letters, 62 selfloop transitions, 11 changer transitions 0/163 dead transitions. [2023-11-06 21:15:58,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 163 transitions, 552 flow [2023-11-06 21:15:58,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 21:15:58,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 21:15:58,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4291 transitions. [2023-11-06 21:15:58,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5631233595800524 [2023-11-06 21:15:58,759 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4291 transitions. [2023-11-06 21:15:58,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4291 transitions. [2023-11-06 21:15:58,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:58,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4291 transitions. [2023-11-06 21:15:58,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 357.5833333333333) internal successors, (4291), 12 states have internal predecessors, (4291), 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 21:15:58,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 635.0) internal successors, (8255), 13 states have internal predecessors, (8255), 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 21:15:58,807 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 635.0) internal successors, (8255), 13 states have internal predecessors, (8255), 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 21:15:58,807 INFO L175 Difference]: Start difference. First operand has 162 places, 157 transitions, 370 flow. Second operand 12 states and 4291 transitions. [2023-11-06 21:15:58,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 163 transitions, 552 flow [2023-11-06 21:15:58,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 163 transitions, 538 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-06 21:15:58,816 INFO L231 Difference]: Finished difference. Result has 178 places, 163 transitions, 440 flow [2023-11-06 21:15:58,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=635, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=440, PETRI_PLACES=178, PETRI_TRANSITIONS=163} [2023-11-06 21:15:58,818 INFO L281 CegarLoopForPetriNet]: 155 programPoint places, 23 predicate places. [2023-11-06 21:15:58,820 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 163 transitions, 440 flow [2023-11-06 21:15:58,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 352.3076923076923) internal successors, (4580), 13 states have internal predecessors, (4580), 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 21:15:58,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:58,824 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-06 21:15:58,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:59,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:59,029 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-11-06 21:15:59,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:59,030 INFO L85 PathProgramCache]: Analyzing trace with hash 429619962, now seen corresponding path program 3 times [2023-11-06 21:15:59,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:59,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855654385] [2023-11-06 21:15:59,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:59,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:59,914 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:15:59,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:59,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855654385] [2023-11-06 21:15:59,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855654385] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:59,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592234371] [2023-11-06 21:15:59,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 21:15:59,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:59,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:59,917 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:59,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17acc1c9-8788-4d32-85d5-7877cc8d2817/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process