./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 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/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_16443022-05e4-40a8-b6f6-26f360765950/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/bin/uautomizer-verify-uCwYo4JHxu/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_16443022-05e4-40a8-b6f6-26f360765950/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_16443022-05e4-40a8-b6f6-26f360765950/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 4e7050d36e2131966739d0040816e49ede1f1e8b3b668f65d41876950193b1d8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:00:20,481 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:00:20,597 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 08:00:20,609 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:00:20,610 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:00:20,632 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:00:20,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:00:20,634 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:00:20,634 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:00:20,635 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:00:20,636 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:00:20,637 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:00:20,637 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:00:20,638 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:00:20,638 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:00:20,639 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:00:20,640 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:00:20,640 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:00:20,641 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:00:20,641 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:00:20,642 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:00:20,643 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:00:20,643 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 08:00:20,644 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:00:20,644 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:00:20,645 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:00:20,645 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:00:20,646 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:00:20,646 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:00:20,647 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:00:20,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:20,648 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:00:20,648 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:00:20,649 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:00:20,649 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:00:20,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:00:20,653 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:00:20,653 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:00:20,654 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:00:20,654 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:00:20,661 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:00:20,662 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_16443022-05e4-40a8-b6f6-26f360765950/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e7050d36e2131966739d0040816e49ede1f1e8b3b668f65d41876950193b1d8 [2023-11-19 08:00:20,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:00:20,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:00:20,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:00:20,972 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:00:20,972 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:00:20,974 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2023-11-19 08:00:24,050 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:00:24,466 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:00:24,470 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2023-11-19 08:00:24,496 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/bin/uautomizer-verify-uCwYo4JHxu/data/9e44669f7/1677bb23824642138b686b0e295d141f/FLAG79b1f09f3 [2023-11-19 08:00:24,513 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/bin/uautomizer-verify-uCwYo4JHxu/data/9e44669f7/1677bb23824642138b686b0e295d141f [2023-11-19 08:00:24,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:00:24,522 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:00:24,526 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:24,526 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:00:24,531 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:00:24,532 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:24" (1/1) ... [2023-11-19 08:00:24,533 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@787aee90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:24, skipping insertion in model container [2023-11-19 08:00:24,533 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:24" (1/1) ... [2023-11-19 08:00:24,609 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:00:25,185 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:25,260 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:00:25,326 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:25,413 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:00:25,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:25 WrapperNode [2023-11-19 08:00:25,414 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:25,416 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:25,416 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:00:25,417 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:00:25,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:25" (1/1) ... [2023-11-19 08:00:25,458 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:25" (1/1) ... [2023-11-19 08:00:25,518 INFO L138 Inliner]: procedures = 278, calls = 64, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 364 [2023-11-19 08:00:25,518 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:25,519 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:00:25,519 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:00:25,519 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:00:25,535 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:25" (1/1) ... [2023-11-19 08:00:25,535 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:25" (1/1) ... [2023-11-19 08:00:25,545 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:25" (1/1) ... [2023-11-19 08:00:25,545 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:25" (1/1) ... [2023-11-19 08:00:25,588 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:25" (1/1) ... [2023-11-19 08:00:25,594 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:25" (1/1) ... [2023-11-19 08:00:25,598 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:25" (1/1) ... [2023-11-19 08:00:25,602 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:25" (1/1) ... [2023-11-19 08:00:25,623 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:00:25,624 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:00:25,624 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:00:25,624 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:00:25,626 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:25" (1/1) ... [2023-11-19 08:00:25,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:25,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:25,657 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:25,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:00:25,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:00:25,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 08:00:25,699 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-19 08:00:25,699 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-19 08:00:25,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:00:25,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:00:25,700 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-19 08:00:25,700 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-19 08:00:25,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:00:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 08:00:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:00:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:00:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 08:00:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:00:25,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:00:25,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:00:25,704 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 08:00:26,002 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:00:26,004 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:00:26,688 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:00:26,703 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:00:26,703 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-19 08:00:26,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:26 BoogieIcfgContainer [2023-11-19 08:00:26,713 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:00:26,715 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:00:26,716 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:00:26,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:00:26,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:24" (1/3) ... [2023-11-19 08:00:26,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9508036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:26, skipping insertion in model container [2023-11-19 08:00:26,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:25" (2/3) ... [2023-11-19 08:00:26,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9508036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:26, skipping insertion in model container [2023-11-19 08:00:26,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:26" (3/3) ... [2023-11-19 08:00:26,722 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2023-11-19 08:00:26,731 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:00:26,742 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:00:26,742 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-11-19 08:00:26,742 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:00:26,940 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 08:00:26,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 383 places, 407 transitions, 834 flow [2023-11-19 08:00:27,368 INFO L124 PetriNetUnfolderBase]: 61/734 cut-off events. [2023-11-19 08:00:27,368 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 08:00:27,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 751 conditions, 734 events. 61/734 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3380 event pairs, 0 based on Foata normal form. 0/632 useless extension candidates. Maximal degree in co-relation 372. Up to 8 conditions per place. [2023-11-19 08:00:27,388 INFO L82 GeneralOperation]: Start removeDead. Operand has 383 places, 407 transitions, 834 flow [2023-11-19 08:00:27,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 383 places, 407 transitions, 834 flow [2023-11-19 08:00:27,417 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:00:27,428 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 383 places, 407 transitions, 834 flow [2023-11-19 08:00:27,432 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 383 places, 407 transitions, 834 flow [2023-11-19 08:00:27,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 383 places, 407 transitions, 834 flow [2023-11-19 08:00:27,640 INFO L124 PetriNetUnfolderBase]: 61/734 cut-off events. [2023-11-19 08:00:27,640 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 08:00:27,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 751 conditions, 734 events. 61/734 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3380 event pairs, 0 based on Foata normal form. 0/632 useless extension candidates. Maximal degree in co-relation 372. Up to 8 conditions per place. [2023-11-19 08:00:27,699 INFO L119 LiptonReduction]: Number of co-enabled transitions 60790 [2023-11-19 08:00:45,143 WARN L293 SmtUtils]: Spent 6.34s on a formula simplification that was a NOOP. DAG size: 142 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-19 08:00:55,878 WARN L293 SmtUtils]: Spent 7.21s on a formula simplification that was a NOOP. DAG size: 142 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-19 08:00:57,790 INFO L134 LiptonReduction]: Checked pairs total: 229362 [2023-11-19 08:00:57,790 INFO L136 LiptonReduction]: Total number of compositions: 292 [2023-11-19 08:00:57,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:00:57,814 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;@218e32d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:00:57,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-11-19 08:00:57,817 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:00:57,818 INFO L124 PetriNetUnfolderBase]: 1/3 cut-off events. [2023-11-19 08:00:57,818 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:57,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:57,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 08:00:57,829 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 08:00:57,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:57,834 INFO L85 PathProgramCache]: Analyzing trace with hash 48471, now seen corresponding path program 1 times [2023-11-19 08:00:57,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:57,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373361015] [2023-11-19 08:00:57,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:57,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:58,027 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 08:00:58,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:58,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373361015] [2023-11-19 08:00:58,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373361015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:58,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:58,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:00:58,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487568521] [2023-11-19 08:00:58,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:58,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:00:58,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:58,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:00:58,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:00:58,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 699 [2023-11-19 08:00:58,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 170 transitions, 360 flow. Second operand has 2 states, 2 states have (on average 380.0) internal successors, (760), 2 states have internal predecessors, (760), 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 08:00:58,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:58,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 699 [2023-11-19 08:00:58,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:01,486 INFO L124 PetriNetUnfolderBase]: 7421/19269 cut-off events. [2023-11-19 08:01:01,486 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-11-19 08:01:01,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30824 conditions, 19269 events. 7421/19269 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 184686 event pairs, 7006 based on Foata normal form. 1022/18097 useless extension candidates. Maximal degree in co-relation 29132. Up to 11428 conditions per place. [2023-11-19 08:01:01,680 INFO L140 encePairwiseOnDemand]: 683/699 looper letters, 62 selfloop transitions, 0 changer transitions 0/153 dead transitions. [2023-11-19 08:01:01,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 153 transitions, 450 flow [2023-11-19 08:01:01,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:01:01,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:01:01,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 836 transitions. [2023-11-19 08:01:01,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.597997138769671 [2023-11-19 08:01:01,713 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 836 transitions. [2023-11-19 08:01:01,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 836 transitions. [2023-11-19 08:01:01,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:01,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 836 transitions. [2023-11-19 08:01:01,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 418.0) internal successors, (836), 2 states have internal predecessors, (836), 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 08:01:01,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 699.0) internal successors, (2097), 3 states have internal predecessors, (2097), 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 08:01:01,761 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 699.0) internal successors, (2097), 3 states have internal predecessors, (2097), 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 08:01:01,764 INFO L175 Difference]: Start difference. First operand has 155 places, 170 transitions, 360 flow. Second operand 2 states and 836 transitions. [2023-11-19 08:01:01,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 153 transitions, 450 flow [2023-11-19 08:01:01,778 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 08:01:01,785 INFO L231 Difference]: Finished difference. Result has 152 places, 153 transitions, 326 flow [2023-11-19 08:01:01,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=699, 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 08:01:01,791 INFO L281 CegarLoopForPetriNet]: 155 programPoint places, -3 predicate places. [2023-11-19 08:01:01,792 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 153 transitions, 326 flow [2023-11-19 08:01:01,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 380.0) internal successors, (760), 2 states have internal predecessors, (760), 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 08:01:01,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:01,793 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-19 08:01:01,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:01:01,794 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)] === [2023-11-19 08:01:01,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:01,796 INFO L85 PathProgramCache]: Analyzing trace with hash 148714215, now seen corresponding path program 1 times [2023-11-19 08:01:01,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:01,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299453771] [2023-11-19 08:01:01,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:01,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:02,133 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 08:01:02,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:02,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299453771] [2023-11-19 08:01:02,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299453771] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:02,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:02,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:01:02,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056875983] [2023-11-19 08:01:02,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:02,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:01:02,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:02,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:01:02,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:01:02,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 699 [2023-11-19 08:01:02,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 153 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 3 states have internal predecessors, (1124), 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 08:01:02,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:02,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 699 [2023-11-19 08:01:02,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:05,741 INFO L124 PetriNetUnfolderBase]: 7421/19270 cut-off events. [2023-11-19 08:01:05,741 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-11-19 08:01:05,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30827 conditions, 19270 events. 7421/19270 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 184958 event pairs, 7006 based on Foata normal form. 0/17076 useless extension candidates. Maximal degree in co-relation 30822. Up to 11428 conditions per place. [2023-11-19 08:01:05,866 INFO L140 encePairwiseOnDemand]: 696/699 looper letters, 61 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2023-11-19 08:01:05,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 154 transitions, 454 flow [2023-11-19 08:01:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:01:05,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:01:05,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1183 transitions. [2023-11-19 08:01:05,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56413924654268 [2023-11-19 08:01:05,872 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1183 transitions. [2023-11-19 08:01:05,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1183 transitions. [2023-11-19 08:01:05,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:05,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1183 transitions. [2023-11-19 08:01:05,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 394.3333333333333) internal successors, (1183), 3 states have internal predecessors, (1183), 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 08:01:05,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 699.0) internal successors, (2796), 4 states have internal predecessors, (2796), 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 08:01:05,892 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 699.0) internal successors, (2796), 4 states have internal predecessors, (2796), 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 08:01:05,892 INFO L175 Difference]: Start difference. First operand has 152 places, 153 transitions, 326 flow. Second operand 3 states and 1183 transitions. [2023-11-19 08:01:05,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 154 transitions, 454 flow [2023-11-19 08:01:05,899 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 08:01:05,904 INFO L231 Difference]: Finished difference. Result has 155 places, 154 transitions, 338 flow [2023-11-19 08:01:05,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=699, 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 08:01:05,911 INFO L281 CegarLoopForPetriNet]: 155 programPoint places, 0 predicate places. [2023-11-19 08:01:05,911 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 154 transitions, 338 flow [2023-11-19 08:01:05,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 3 states have internal predecessors, (1124), 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 08:01:05,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:05,913 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:05,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:01:05,914 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)] === [2023-11-19 08:01:05,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:05,917 INFO L85 PathProgramCache]: Analyzing trace with hash -11011619, now seen corresponding path program 1 times [2023-11-19 08:01:05,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:05,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909793012] [2023-11-19 08:01:05,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:05,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:06,074 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 08:01:06,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:06,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909793012] [2023-11-19 08:01:06,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909793012] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:06,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512005552] [2023-11-19 08:01:06,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:06,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:06,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:06,078 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:06,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:01:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:06,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:01:06,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:06,326 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 08:01:06,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:06,352 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 08:01:06,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512005552] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:06,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:01:06,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 08:01:06,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650374927] [2023-11-19 08:01:06,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:06,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:01:06,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:06,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:01:06,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:01:06,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 699 [2023-11-19 08:01:06,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 154 transitions, 338 flow. Second operand has 7 states, 7 states have (on average 373.57142857142856) internal successors, (2615), 7 states have internal predecessors, (2615), 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 08:01:06,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:06,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 699 [2023-11-19 08:01:06,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:09,878 INFO L124 PetriNetUnfolderBase]: 7421/19273 cut-off events. [2023-11-19 08:01:09,878 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-11-19 08:01:09,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30843 conditions, 19273 events. 7421/19273 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 184834 event pairs, 7006 based on Foata normal form. 0/17079 useless extension candidates. Maximal degree in co-relation 30836. Up to 11428 conditions per place. [2023-11-19 08:01:10,001 INFO L140 encePairwiseOnDemand]: 696/699 looper letters, 61 selfloop transitions, 5 changer transitions 0/157 dead transitions. [2023-11-19 08:01:10,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 157 transitions, 482 flow [2023-11-19 08:01:10,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:01:10,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:01:10,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2301 transitions. [2023-11-19 08:01:10,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5486409155937053 [2023-11-19 08:01:10,012 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2301 transitions. [2023-11-19 08:01:10,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2301 transitions. [2023-11-19 08:01:10,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:10,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2301 transitions. [2023-11-19 08:01:10,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 383.5) internal successors, (2301), 6 states have internal predecessors, (2301), 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 08:01:10,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 699.0) internal successors, (4893), 7 states have internal predecessors, (4893), 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 08:01:10,041 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 699.0) internal successors, (4893), 7 states have internal predecessors, (4893), 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 08:01:10,041 INFO L175 Difference]: Start difference. First operand has 155 places, 154 transitions, 338 flow. Second operand 6 states and 2301 transitions. [2023-11-19 08:01:10,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 157 transitions, 482 flow [2023-11-19 08:01:10,046 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 08:01:10,053 INFO L231 Difference]: Finished difference. Result has 162 places, 157 transitions, 370 flow [2023-11-19 08:01:10,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=699, 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 08:01:10,057 INFO L281 CegarLoopForPetriNet]: 155 programPoint places, 7 predicate places. [2023-11-19 08:01:10,058 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 157 transitions, 370 flow [2023-11-19 08:01:10,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 373.57142857142856) internal successors, (2615), 7 states have internal predecessors, (2615), 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 08:01:10,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:10,061 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-19 08:01:10,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:10,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:10,284 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)] === [2023-11-19 08:01:10,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:10,285 INFO L85 PathProgramCache]: Analyzing trace with hash 886194279, now seen corresponding path program 2 times [2023-11-19 08:01:10,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:10,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943928573] [2023-11-19 08:01:10,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:10,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:10,716 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 08:01:10,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:10,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943928573] [2023-11-19 08:01:10,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943928573] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:10,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763782223] [2023-11-19 08:01:10,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:01:10,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:10,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:10,719 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:10,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:01:10,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 08:01:10,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:01:10,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:01:10,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:11,019 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 08:01:11,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:11,095 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 08:01:11,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763782223] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:11,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:01:11,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 08:01:11,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253484440] [2023-11-19 08:01:11,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:11,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 08:01:11,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:11,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 08:01:11,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:01:11,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 699 [2023-11-19 08:01:11,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 157 transitions, 370 flow. Second operand has 13 states, 13 states have (on average 373.3076923076923) internal successors, (4853), 13 states have internal predecessors, (4853), 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 08:01:11,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:11,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 699 [2023-11-19 08:01:11,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:14,335 INFO L124 PetriNetUnfolderBase]: 7421/19279 cut-off events. [2023-11-19 08:01:14,335 INFO L125 PetriNetUnfolderBase]: For 165/165 co-relation queries the response was YES. [2023-11-19 08:01:14,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30880 conditions, 19279 events. 7421/19279 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 184831 event pairs, 7006 based on Foata normal form. 6/17092 useless extension candidates. Maximal degree in co-relation 30870. Up to 11428 conditions per place. [2023-11-19 08:01:14,456 INFO L140 encePairwiseOnDemand]: 696/699 looper letters, 61 selfloop transitions, 11 changer transitions 0/163 dead transitions. [2023-11-19 08:01:14,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 163 transitions, 550 flow [2023-11-19 08:01:14,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 08:01:14,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 08:01:14,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4542 transitions. [2023-11-19 08:01:14,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5414878397711016 [2023-11-19 08:01:14,482 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4542 transitions. [2023-11-19 08:01:14,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4542 transitions. [2023-11-19 08:01:14,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:14,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4542 transitions. [2023-11-19 08:01:14,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 378.5) internal successors, (4542), 12 states have internal predecessors, (4542), 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 08:01:14,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 699.0) internal successors, (9087), 13 states have internal predecessors, (9087), 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 08:01:14,531 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 699.0) internal successors, (9087), 13 states have internal predecessors, (9087), 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 08:01:14,533 INFO L175 Difference]: Start difference. First operand has 162 places, 157 transitions, 370 flow. Second operand 12 states and 4542 transitions. [2023-11-19 08:01:14,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 163 transitions, 550 flow [2023-11-19 08:01:14,539 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 08:01:14,542 INFO L231 Difference]: Finished difference. Result has 178 places, 163 transitions, 440 flow [2023-11-19 08:01:14,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=699, 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 08:01:14,545 INFO L281 CegarLoopForPetriNet]: 155 programPoint places, 23 predicate places. [2023-11-19 08:01:14,545 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 163 transitions, 440 flow [2023-11-19 08:01:14,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 373.3076923076923) internal successors, (4853), 13 states have internal predecessors, (4853), 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 08:01:14,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:14,549 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-19 08:01:14,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:14,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:14,764 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)] === [2023-11-19 08:01:14,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:14,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1619874649, now seen corresponding path program 3 times [2023-11-19 08:01:14,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:14,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664868646] [2023-11-19 08:01:14,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:14,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:15,783 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 08:01:15,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:15,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664868646] [2023-11-19 08:01:15,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664868646] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:15,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403277949] [2023-11-19 08:01:15,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 08:01:15,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:15,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:15,788 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:15,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16443022-05e4-40a8-b6f6-26f360765950/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process