./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff 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_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7be9b237ca4111a24c77c67cce26f31a788af03984af96dee7353f79c789c2c1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:42:53,478 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:42:53,577 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:42:53,583 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:42:53,584 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:42:53,608 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:42:53,609 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:42:53,610 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:42:53,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:42:53,612 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:42:53,612 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:42:53,613 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:42:53,614 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:42:53,614 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:42:53,615 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:42:53,616 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:42:53,616 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:42:53,617 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:42:53,617 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:42:53,618 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:42:53,618 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:42:53,619 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:42:53,620 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:42:53,620 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:42:53,621 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:42:53,621 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:42:53,622 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:42:53,622 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:42:53,623 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:42:53,623 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:42:53,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:42:53,624 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:42:53,625 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:42:53,625 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:42:53,625 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:42:53,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:42:53,626 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:42:53,626 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:42:53,626 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:42:53,626 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:42:53,627 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:42:53,627 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_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7be9b237ca4111a24c77c67cce26f31a788af03984af96dee7353f79c789c2c1 [2023-11-19 07:42:53,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:42:53,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:42:53,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:42:53,964 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:42:53,965 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:42:53,967 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2023-11-19 07:42:57,135 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:42:57,448 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:42:57,448 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2023-11-19 07:42:57,476 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/data/68e214abd/731e2c676eab414a9063c1a307d76ddf/FLAGe662c4334 [2023-11-19 07:42:57,495 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/data/68e214abd/731e2c676eab414a9063c1a307d76ddf [2023-11-19 07:42:57,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:42:57,504 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:42:57,509 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:42:57,509 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:42:57,515 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:42:57,516 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:42:57" (1/1) ... [2023-11-19 07:42:57,517 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78f1be2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:57, skipping insertion in model container [2023-11-19 07:42:57,517 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:42:57" (1/1) ... [2023-11-19 07:42:57,606 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:42:58,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:42:58,301 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:42:58,370 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:42:58,453 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:42:58,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:58 WrapperNode [2023-11-19 07:42:58,454 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:42:58,455 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:42:58,456 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:42:58,456 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:42:58,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:58" (1/1) ... [2023-11-19 07:42:58,525 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:58" (1/1) ... [2023-11-19 07:42:58,582 INFO L138 Inliner]: procedures = 278, calls = 63, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 356 [2023-11-19 07:42:58,583 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:42:58,584 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:42:58,584 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:42:58,584 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:42:58,595 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:58" (1/1) ... [2023-11-19 07:42:58,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:58" (1/1) ... [2023-11-19 07:42:58,604 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:58" (1/1) ... [2023-11-19 07:42:58,605 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:58" (1/1) ... [2023-11-19 07:42:58,636 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:58" (1/1) ... [2023-11-19 07:42:58,643 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:58" (1/1) ... [2023-11-19 07:42:58,647 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:58" (1/1) ... [2023-11-19 07:42:58,650 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:58" (1/1) ... [2023-11-19 07:42:58,657 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:42:58,658 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:42:58,659 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:42:58,659 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:42:58,660 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:58" (1/1) ... [2023-11-19 07:42:58,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:42:58,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:58,697 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:42:58,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:42:58,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:42:58,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:42:58,756 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-19 07:42:58,756 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-19 07:42:58,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:42:58,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:42:58,757 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-19 07:42:58,758 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-19 07:42:58,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:42:58,759 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:42:58,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:42:58,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:42:58,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:42:58,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:42:58,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:42:58,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:42:58,764 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:42:59,036 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:42:59,039 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:42:59,799 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:42:59,818 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:42:59,821 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-19 07:42:59,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:59 BoogieIcfgContainer [2023-11-19 07:42:59,829 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:42:59,833 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:42:59,834 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:42:59,837 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:42:59,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:42:57" (1/3) ... [2023-11-19 07:42:59,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7024c1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:59, skipping insertion in model container [2023-11-19 07:42:59,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:58" (2/3) ... [2023-11-19 07:42:59,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7024c1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:59, skipping insertion in model container [2023-11-19 07:42:59,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:59" (3/3) ... [2023-11-19 07:42:59,842 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2023-11-19 07:42:59,851 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:42:59,861 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:42:59,862 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-11-19 07:42:59,862 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:43:00,040 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 07:43:00,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 372 places, 395 transitions, 810 flow [2023-11-19 07:43:00,442 INFO L124 PetriNetUnfolderBase]: 59/710 cut-off events. [2023-11-19 07:43:00,442 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 07:43:00,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 710 events. 59/710 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3318 event pairs, 0 based on Foata normal form. 0/610 useless extension candidates. Maximal degree in co-relation 360. Up to 8 conditions per place. [2023-11-19 07:43:00,460 INFO L82 GeneralOperation]: Start removeDead. Operand has 372 places, 395 transitions, 810 flow [2023-11-19 07:43:00,473 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 372 places, 395 transitions, 810 flow [2023-11-19 07:43:00,478 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:43:00,492 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 372 places, 395 transitions, 810 flow [2023-11-19 07:43:00,495 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 372 places, 395 transitions, 810 flow [2023-11-19 07:43:00,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 372 places, 395 transitions, 810 flow [2023-11-19 07:43:00,677 INFO L124 PetriNetUnfolderBase]: 59/710 cut-off events. [2023-11-19 07:43:00,677 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 07:43:00,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 710 events. 59/710 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3318 event pairs, 0 based on Foata normal form. 0/610 useless extension candidates. Maximal degree in co-relation 360. Up to 8 conditions per place. [2023-11-19 07:43:00,728 INFO L119 LiptonReduction]: Number of co-enabled transitions 57430 [2023-11-19 07:43:25,920 INFO L134 LiptonReduction]: Checked pairs total: 270235 [2023-11-19 07:43:25,921 INFO L136 LiptonReduction]: Total number of compositions: 275 [2023-11-19 07:43:25,937 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:43:25,944 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4f26222b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:43:25,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-11-19 07:43:25,949 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:43:25,949 INFO L124 PetriNetUnfolderBase]: 1/3 cut-off events. [2023-11-19 07:43:25,949 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:25,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:25,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:43:25,951 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)] === [2023-11-19 07:43:25,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:25,957 INFO L85 PathProgramCache]: Analyzing trace with hash 46620, now seen corresponding path program 1 times [2023-11-19 07:43:25,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:25,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738250471] [2023-11-19 07:43:25,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:25,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:26,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:26,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:26,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738250471] [2023-11-19 07:43:26,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738250471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:26,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:26,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:43:26,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874316131] [2023-11-19 07:43:26,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:26,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:43:26,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:26,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:43:26,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:43:26,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 670 [2023-11-19 07:43:26,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 170 transitions, 360 flow. Second operand has 2 states, 2 states have (on average 369.0) internal successors, (738), 2 states have internal predecessors, (738), 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) [2023-11-19 07:43:26,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:26,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 670 [2023-11-19 07:43:26,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:29,658 INFO L124 PetriNetUnfolderBase]: 7421/19263 cut-off events. [2023-11-19 07:43:29,659 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-11-19 07:43:29,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30818 conditions, 19263 events. 7421/19263 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 184718 event pairs, 7006 based on Foata normal form. 802/17710 useless extension candidates. Maximal degree in co-relation 29128. Up to 11428 conditions per place. [2023-11-19 07:43:29,800 INFO L140 encePairwiseOnDemand]: 654/670 looper letters, 62 selfloop transitions, 0 changer transitions 0/153 dead transitions. [2023-11-19 07:43:29,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 153 transitions, 450 flow [2023-11-19 07:43:29,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:43:29,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:43:29,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 814 transitions. [2023-11-19 07:43:29,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6074626865671642 [2023-11-19 07:43:29,818 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 814 transitions. [2023-11-19 07:43:29,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 814 transitions. [2023-11-19 07:43:29,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:29,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 814 transitions. [2023-11-19 07:43:29,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 407.0) internal successors, (814), 2 states have internal predecessors, (814), 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) [2023-11-19 07:43:29,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 670.0) internal successors, (2010), 3 states have internal predecessors, (2010), 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) [2023-11-19 07:43:29,841 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 670.0) internal successors, (2010), 3 states have internal predecessors, (2010), 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) [2023-11-19 07:43:29,843 INFO L175 Difference]: Start difference. First operand has 155 places, 170 transitions, 360 flow. Second operand 2 states and 814 transitions. [2023-11-19 07:43:29,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 153 transitions, 450 flow [2023-11-19 07:43:29,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 153 transitions, 450 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:43:29,859 INFO L231 Difference]: Finished difference. Result has 152 places, 153 transitions, 326 flow [2023-11-19 07:43:29,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, 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} [2023-11-19 07:43:29,866 INFO L281 CegarLoopForPetriNet]: 155 programPoint places, -3 predicate places. [2023-11-19 07:43:29,866 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 153 transitions, 326 flow [2023-11-19 07:43:29,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 369.0) internal successors, (738), 2 states have internal predecessors, (738), 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) [2023-11-19 07:43:29,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:29,867 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-19 07:43:29,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:43:29,868 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-11-19 07:43:29,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:29,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1473562928, now seen corresponding path program 1 times [2023-11-19 07:43:29,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:29,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954385973] [2023-11-19 07:43:29,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:29,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:30,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:43:30,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:30,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954385973] [2023-11-19 07:43:30,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954385973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:30,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:30,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:43:30,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415067811] [2023-11-19 07:43:30,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:30,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:30,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:30,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:30,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:30,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 670 [2023-11-19 07:43:30,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 153 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 363.6666666666667) internal successors, (1091), 3 states have internal predecessors, (1091), 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) [2023-11-19 07:43:30,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:30,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 670 [2023-11-19 07:43:30,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:33,312 INFO L124 PetriNetUnfolderBase]: 7421/19264 cut-off events. [2023-11-19 07:43:33,312 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-11-19 07:43:33,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30821 conditions, 19264 events. 7421/19264 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 184925 event pairs, 7006 based on Foata normal form. 0/16909 useless extension candidates. Maximal degree in co-relation 30816. Up to 11428 conditions per place. [2023-11-19 07:43:33,415 INFO L140 encePairwiseOnDemand]: 667/670 looper letters, 61 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2023-11-19 07:43:33,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 154 transitions, 454 flow [2023-11-19 07:43:33,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:33,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:43:33,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1150 transitions. [2023-11-19 07:43:33,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.572139303482587 [2023-11-19 07:43:33,421 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1150 transitions. [2023-11-19 07:43:33,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1150 transitions. [2023-11-19 07:43:33,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:33,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1150 transitions. [2023-11-19 07:43:33,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 383.3333333333333) internal successors, (1150), 3 states have internal predecessors, (1150), 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) [2023-11-19 07:43:33,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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) [2023-11-19 07:43:33,437 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 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) [2023-11-19 07:43:33,437 INFO L175 Difference]: Start difference. First operand has 152 places, 153 transitions, 326 flow. Second operand 3 states and 1150 transitions. [2023-11-19 07:43:33,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 154 transitions, 454 flow [2023-11-19 07:43:33,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 154 transitions, 454 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:43:33,446 INFO L231 Difference]: Finished difference. Result has 155 places, 154 transitions, 338 flow [2023-11-19 07:43:33,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, 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} [2023-11-19 07:43:33,448 INFO L281 CegarLoopForPetriNet]: 155 programPoint places, 0 predicate places. [2023-11-19 07:43:33,448 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 154 transitions, 338 flow [2023-11-19 07:43:33,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 363.6666666666667) internal successors, (1091), 3 states have internal predecessors, (1091), 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) [2023-11-19 07:43:33,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:33,450 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:33,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:43:33,450 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-11-19 07:43:33,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:33,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2137934274, now seen corresponding path program 1 times [2023-11-19 07:43:33,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:33,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569306824] [2023-11-19 07:43:33,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:33,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:33,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:43:33,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:33,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569306824] [2023-11-19 07:43:33,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569306824] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:33,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106885198] [2023-11-19 07:43:33,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:33,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:33,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:33,655 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:33,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:43:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:33,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:43:33,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:33,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:43:33,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:43:33,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:43:33,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106885198] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:43:33,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:43:33,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:43:33,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738566682] [2023-11-19 07:43:33,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:43:33,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:43:33,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:33,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:43:33,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:43:33,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 670 [2023-11-19 07:43:33,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 154 transitions, 338 flow. Second operand has 7 states, 7 states have (on average 362.57142857142856) internal successors, (2538), 7 states have internal predecessors, (2538), 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) [2023-11-19 07:43:33,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:33,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 670 [2023-11-19 07:43:33,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:37,030 INFO L124 PetriNetUnfolderBase]: 7421/19267 cut-off events. [2023-11-19 07:43:37,030 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-11-19 07:43:37,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30837 conditions, 19267 events. 7421/19267 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 184641 event pairs, 7006 based on Foata normal form. 0/16912 useless extension candidates. Maximal degree in co-relation 30830. Up to 11428 conditions per place. [2023-11-19 07:43:37,130 INFO L140 encePairwiseOnDemand]: 667/670 looper letters, 61 selfloop transitions, 5 changer transitions 0/157 dead transitions. [2023-11-19 07:43:37,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 157 transitions, 482 flow [2023-11-19 07:43:37,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:43:37,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:43:37,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2235 transitions. [2023-11-19 07:43:37,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5559701492537313 [2023-11-19 07:43:37,139 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2235 transitions. [2023-11-19 07:43:37,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2235 transitions. [2023-11-19 07:43:37,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:37,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2235 transitions. [2023-11-19 07:43:37,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 372.5) internal successors, (2235), 6 states have internal predecessors, (2235), 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) [2023-11-19 07:43:37,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 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) [2023-11-19 07:43:37,164 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 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) [2023-11-19 07:43:37,165 INFO L175 Difference]: Start difference. First operand has 155 places, 154 transitions, 338 flow. Second operand 6 states and 2235 transitions. [2023-11-19 07:43:37,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 157 transitions, 482 flow [2023-11-19 07:43:37,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 157 transitions, 478 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:43:37,176 INFO L231 Difference]: Finished difference. Result has 162 places, 157 transitions, 370 flow [2023-11-19 07:43:37,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, 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} [2023-11-19 07:43:37,178 INFO L281 CegarLoopForPetriNet]: 155 programPoint places, 7 predicate places. [2023-11-19 07:43:37,178 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 157 transitions, 370 flow [2023-11-19 07:43:37,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 362.57142857142856) internal successors, (2538), 7 states have internal predecessors, (2538), 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) [2023-11-19 07:43:37,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:37,181 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-19 07:43:37,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:43:37,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:37,395 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-11-19 07:43:37,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:37,396 INFO L85 PathProgramCache]: Analyzing trace with hash -372153520, now seen corresponding path program 2 times [2023-11-19 07:43:37,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:37,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525718810] [2023-11-19 07:43:37,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:37,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:37,881 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:43:37,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:37,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525718810] [2023-11-19 07:43:37,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525718810] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:37,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800539195] [2023-11-19 07:43:37,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:43:37,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:37,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:37,887 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:37,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:43:38,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:43:38,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:43:38,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:43:38,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:38,162 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:43:38,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:43:38,227 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:43:38,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800539195] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:43:38,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:43:38,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:43:38,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616140568] [2023-11-19 07:43:38,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:43:38,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:43:38,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:38,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:43:38,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:43:38,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 670 [2023-11-19 07:43:38,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 157 transitions, 370 flow. Second operand has 13 states, 13 states have (on average 362.3076923076923) internal successors, (4710), 13 states have internal predecessors, (4710), 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) [2023-11-19 07:43:38,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:38,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 670 [2023-11-19 07:43:38,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:41,282 INFO L124 PetriNetUnfolderBase]: 7421/19273 cut-off events. [2023-11-19 07:43:41,282 INFO L125 PetriNetUnfolderBase]: For 165/165 co-relation queries the response was YES. [2023-11-19 07:43:41,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30874 conditions, 19273 events. 7421/19273 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 184893 event pairs, 7006 based on Foata normal form. 6/16925 useless extension candidates. Maximal degree in co-relation 30864. Up to 11428 conditions per place. [2023-11-19 07:43:41,517 INFO L140 encePairwiseOnDemand]: 667/670 looper letters, 61 selfloop transitions, 11 changer transitions 0/163 dead transitions. [2023-11-19 07:43:41,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 163 transitions, 550 flow [2023-11-19 07:43:41,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:43:41,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:43:41,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4410 transitions. [2023-11-19 07:43:41,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5485074626865671 [2023-11-19 07:43:41,536 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4410 transitions. [2023-11-19 07:43:41,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4410 transitions. [2023-11-19 07:43:41,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:41,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4410 transitions. [2023-11-19 07:43:41,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 367.5) internal successors, (4410), 12 states have internal predecessors, (4410), 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) [2023-11-19 07:43:41,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 670.0) internal successors, (8710), 13 states have internal predecessors, (8710), 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) [2023-11-19 07:43:41,585 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 670.0) internal successors, (8710), 13 states have internal predecessors, (8710), 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) [2023-11-19 07:43:41,586 INFO L175 Difference]: Start difference. First operand has 162 places, 157 transitions, 370 flow. Second operand 12 states and 4410 transitions. [2023-11-19 07:43:41,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 163 transitions, 550 flow [2023-11-19 07:43:41,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 163 transitions, 536 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-19 07:43:41,600 INFO L231 Difference]: Finished difference. Result has 178 places, 163 transitions, 440 flow [2023-11-19 07:43:41,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, 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} [2023-11-19 07:43:41,602 INFO L281 CegarLoopForPetriNet]: 155 programPoint places, 23 predicate places. [2023-11-19 07:43:41,606 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 163 transitions, 440 flow [2023-11-19 07:43:41,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 362.3076923076923) internal successors, (4710), 13 states have internal predecessors, (4710), 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) [2023-11-19 07:43:41,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:41,609 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-19 07:43:41,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:43:41,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-19 07:43:41,834 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-11-19 07:43:41,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:41,834 INFO L85 PathProgramCache]: Analyzing trace with hash -204640752, now seen corresponding path program 3 times [2023-11-19 07:43:41,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:41,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212207860] [2023-11-19 07:43:41,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:41,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:42,788 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:43:42,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:42,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212207860] [2023-11-19 07:43:42,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212207860] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:42,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29062947] [2023-11-19 07:43:42,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:43:42,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:42,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:42,800 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:42,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_443ad472-1e16-4f39-ae44-3d033d003bb9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process