./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 e7bb482b 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_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/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_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:04:45,638 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:04:45,728 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:04:45,743 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:04:45,744 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:04:45,797 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:04:45,797 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:04:45,798 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:04:45,799 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:04:45,805 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:04:45,806 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:04:45,806 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:04:45,807 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:04:45,809 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:04:45,809 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:04:45,810 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:04:45,810 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:04:45,811 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:04:45,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:04:45,812 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:04:45,812 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:04:45,813 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:04:45,813 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:04:45,813 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:04:45,814 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:04:45,814 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:04:45,815 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:04:45,816 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:04:45,816 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:04:45,816 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:04:45,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:04:45,818 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:04:45,819 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:04:45,819 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:04:45,819 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:04:45,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:04:45,820 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:04:45,820 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:04:45,820 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:04:45,820 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:04:45,821 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:04:45,821 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_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa [2023-11-06 22:04:46,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:04:46,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:04:46,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:04:46,133 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:04:46,134 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:04:46,136 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2023-11-06 22:04:49,438 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:04:49,826 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:04:49,829 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2023-11-06 22:04:49,853 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/data/8bb8906b8/8e5cd6c834e84ec7ab35c67209acf159/FLAGcaad12f23 [2023-11-06 22:04:49,870 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/data/8bb8906b8/8e5cd6c834e84ec7ab35c67209acf159 [2023-11-06 22:04:49,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:04:49,875 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:04:49,877 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:04:49,878 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:04:49,884 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:04:49,885 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:49" (1/1) ... [2023-11-06 22:04:49,887 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bfd9a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:49, skipping insertion in model container [2023-11-06 22:04:49,887 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:49" (1/1) ... [2023-11-06 22:04:49,968 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:04:50,693 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:04:50,785 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:04:50,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:04:50,939 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:04:50,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:50 WrapperNode [2023-11-06 22:04:50,940 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:04:50,941 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:04:50,941 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:04:50,941 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:04:50,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:50" (1/1) ... [2023-11-06 22:04:50,978 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:50" (1/1) ... [2023-11-06 22:04:51,032 INFO L138 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 348 [2023-11-06 22:04:51,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:04:51,034 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:04:51,034 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:04:51,035 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:04:51,047 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:50" (1/1) ... [2023-11-06 22:04:51,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:50" (1/1) ... [2023-11-06 22:04:51,057 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:50" (1/1) ... [2023-11-06 22:04:51,057 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:50" (1/1) ... [2023-11-06 22:04:51,087 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:50" (1/1) ... [2023-11-06 22:04:51,137 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:50" (1/1) ... [2023-11-06 22:04:51,141 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:50" (1/1) ... [2023-11-06 22:04:51,149 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:50" (1/1) ... [2023-11-06 22:04:51,155 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:04:51,156 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:04:51,156 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:04:51,157 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:04:51,158 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:50" (1/1) ... [2023-11-06 22:04:51,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:04:51,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:51,199 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:04:51,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:04:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:04:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:04:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-06 22:04:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-06 22:04:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:04:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:04:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-06 22:04:51,262 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-06 22:04:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:04:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:04:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:04:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:04:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:04:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:04:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:04:51,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:04:51,269 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:04:51,546 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:04:51,549 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:04:52,367 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:04:52,379 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:04:52,379 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-06 22:04:52,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:52 BoogieIcfgContainer [2023-11-06 22:04:52,383 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:04:52,385 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:04:52,385 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:04:52,389 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:04:52,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:04:49" (1/3) ... [2023-11-06 22:04:52,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65edd36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:52, skipping insertion in model container [2023-11-06 22:04:52,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:50" (2/3) ... [2023-11-06 22:04:52,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65edd36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:52, skipping insertion in model container [2023-11-06 22:04:52,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:52" (3/3) ... [2023-11-06 22:04:52,393 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2023-11-06 22:04:52,404 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:04:52,414 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:04:52,415 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-11-06 22:04:52,415 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:04:52,668 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 22:04:52,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 358 places, 379 transitions, 778 flow [2023-11-06 22:04:53,087 INFO L124 PetriNetUnfolderBase]: 56/686 cut-off events. [2023-11-06 22:04:53,087 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 22:04:53,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 703 conditions, 686 events. 56/686 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3262 event pairs, 0 based on Foata normal form. 0/589 useless extension candidates. Maximal degree in co-relation 344. Up to 8 conditions per place. [2023-11-06 22:04:53,105 INFO L82 GeneralOperation]: Start removeDead. Operand has 358 places, 379 transitions, 778 flow [2023-11-06 22:04:53,127 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 358 places, 379 transitions, 778 flow [2023-11-06 22:04:53,132 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:04:53,151 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 358 places, 379 transitions, 778 flow [2023-11-06 22:04:53,156 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 358 places, 379 transitions, 778 flow [2023-11-06 22:04:53,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 358 places, 379 transitions, 778 flow [2023-11-06 22:04:53,360 INFO L124 PetriNetUnfolderBase]: 56/686 cut-off events. [2023-11-06 22:04:53,360 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 22:04:53,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 703 conditions, 686 events. 56/686 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3262 event pairs, 0 based on Foata normal form. 0/589 useless extension candidates. Maximal degree in co-relation 344. Up to 8 conditions per place. [2023-11-06 22:04:53,422 INFO L119 LiptonReduction]: Number of co-enabled transitions 51590 [2023-11-06 22:05:19,386 WARN L293 SmtUtils]: Spent 11.37s on a formula simplification. DAG size of input: 145 DAG size of output: 139 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:05:33,565 WARN L293 SmtUtils]: Spent 12.46s on a formula simplification. DAG size of input: 145 DAG size of output: 139 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:05:49,503 INFO L134 LiptonReduction]: Checked pairs total: 236701 [2023-11-06 22:05:49,503 INFO L136 LiptonReduction]: Total number of compositions: 247 [2023-11-06 22:05:49,517 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:05:49,522 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6be3bf21, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:05:49,522 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-11-06 22:05:49,525 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:05:49,525 INFO L124 PetriNetUnfolderBase]: 1/3 cut-off events. [2023-11-06 22:05:49,525 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:05:49,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:49,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:05:49,527 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-11-06 22:05:49,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:49,531 INFO L85 PathProgramCache]: Analyzing trace with hash 44027, now seen corresponding path program 1 times [2023-11-06 22:05:49,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:49,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413898138] [2023-11-06 22:05:49,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:49,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:49,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:49,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413898138] [2023-11-06 22:05:49,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413898138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:49,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:49,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:05:49,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352885413] [2023-11-06 22:05:49,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:49,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:05:49,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:49,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:05:49,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:05:49,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 354 out of 626 [2023-11-06 22:05:49,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 168 transitions, 356 flow. Second operand has 2 states, 2 states have (on average 355.0) internal successors, (710), 2 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:49,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:49,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 354 of 626 [2023-11-06 22:05:49,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:53,080 INFO L124 PetriNetUnfolderBase]: 6989/18386 cut-off events. [2023-11-06 22:05:53,080 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2023-11-06 22:05:53,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29285 conditions, 18386 events. 6989/18386 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 177391 event pairs, 6594 based on Foata normal form. 766/17188 useless extension candidates. Maximal degree in co-relation 27593. Up to 10776 conditions per place. [2023-11-06 22:05:53,236 INFO L140 encePairwiseOnDemand]: 611/626 looper letters, 61 selfloop transitions, 0 changer transitions 0/153 dead transitions. [2023-11-06 22:05:53,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 153 transitions, 448 flow [2023-11-06 22:05:53,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:05:53,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:05:53,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 784 transitions. [2023-11-06 22:05:53,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6261980830670927 [2023-11-06 22:05:53,259 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 784 transitions. [2023-11-06 22:05:53,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 784 transitions. [2023-11-06 22:05:53,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:53,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 784 transitions. [2023-11-06 22:05:53,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 392.0) internal successors, (784), 2 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:53,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 626.0) internal successors, (1878), 3 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:53,287 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 626.0) internal successors, (1878), 3 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:53,289 INFO L175 Difference]: Start difference. First operand has 154 places, 168 transitions, 356 flow. Second operand 2 states and 784 transitions. [2023-11-06 22:05:53,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 153 transitions, 448 flow [2023-11-06 22:05:53,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 153 transitions, 448 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:05:53,310 INFO L231 Difference]: Finished difference. Result has 152 places, 153 transitions, 326 flow [2023-11-06 22:05:53,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=326, PETRI_PLACES=152, PETRI_TRANSITIONS=153} [2023-11-06 22:05:53,319 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, -2 predicate places. [2023-11-06 22:05:53,319 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 153 transitions, 326 flow [2023-11-06 22:05:53,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 355.0) internal successors, (710), 2 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:53,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:53,320 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-06 22:05:53,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:05:53,322 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-11-06 22:05:53,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:53,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1875694694, now seen corresponding path program 1 times [2023-11-06 22:05:53,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:53,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71948392] [2023-11-06 22:05:53,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:53,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:53,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:05:53,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:53,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71948392] [2023-11-06 22:05:53,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71948392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:53,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:53,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:05:53,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318901508] [2023-11-06 22:05:53,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:53,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:05:53,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:53,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:05:53,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:05:53,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 348 out of 626 [2023-11-06 22:05:53,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 153 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 349.6666666666667) internal successors, (1049), 3 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:53,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:53,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 348 of 626 [2023-11-06 22:05:53,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:56,558 INFO L124 PetriNetUnfolderBase]: 6989/18387 cut-off events. [2023-11-06 22:05:56,558 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2023-11-06 22:05:56,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29288 conditions, 18387 events. 6989/18387 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 177370 event pairs, 6594 based on Foata normal form. 0/16423 useless extension candidates. Maximal degree in co-relation 29283. Up to 10776 conditions per place. [2023-11-06 22:05:56,664 INFO L140 encePairwiseOnDemand]: 623/626 looper letters, 60 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2023-11-06 22:05:56,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 154 transitions, 452 flow [2023-11-06 22:05:56,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:05:56,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:05:56,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1107 transitions. [2023-11-06 22:05:56,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5894568690095847 [2023-11-06 22:05:56,669 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1107 transitions. [2023-11-06 22:05:56,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1107 transitions. [2023-11-06 22:05:56,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:56,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1107 transitions. [2023-11-06 22:05:56,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 369.0) internal successors, (1107), 3 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:56,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 626.0) internal successors, (2504), 4 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:56,687 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 626.0) internal successors, (2504), 4 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:56,688 INFO L175 Difference]: Start difference. First operand has 152 places, 153 transitions, 326 flow. Second operand 3 states and 1107 transitions. [2023-11-06 22:05:56,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 154 transitions, 452 flow [2023-11-06 22:05:56,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 154 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:05:56,701 INFO L231 Difference]: Finished difference. Result has 155 places, 154 transitions, 338 flow [2023-11-06 22:05:56,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=155, PETRI_TRANSITIONS=154} [2023-11-06 22:05:56,709 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, 1 predicate places. [2023-11-06 22:05:56,710 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 154 transitions, 338 flow [2023-11-06 22:05:56,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 349.6666666666667) internal successors, (1049), 3 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:56,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:56,711 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:56,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:05:56,713 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-11-06 22:05:56,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:56,718 INFO L85 PathProgramCache]: Analyzing trace with hash -16499129, now seen corresponding path program 1 times [2023-11-06 22:05:56,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:56,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174479604] [2023-11-06 22:05:56,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:56,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:56,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:05:56,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:56,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174479604] [2023-11-06 22:05:56,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174479604] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:05:56,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576220614] [2023-11-06 22:05:56,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:56,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:56,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:56,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:56,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:05:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:57,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:05:57,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:57,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:05:57,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:05:57,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:05:57,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576220614] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:05:57,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:05:57,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 22:05:57,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570011313] [2023-11-06 22:05:57,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:05:57,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:05:57,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:57,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:05:57,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:05:57,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 626 [2023-11-06 22:05:57,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 154 transitions, 338 flow. Second operand has 7 states, 7 states have (on average 348.57142857142856) internal successors, (2440), 7 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:57,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:57,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 626 [2023-11-06 22:05:57,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:06:00,119 INFO L124 PetriNetUnfolderBase]: 6989/18390 cut-off events. [2023-11-06 22:06:00,119 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2023-11-06 22:06:00,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29304 conditions, 18390 events. 6989/18390 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 177344 event pairs, 6594 based on Foata normal form. 0/16426 useless extension candidates. Maximal degree in co-relation 29297. Up to 10776 conditions per place. [2023-11-06 22:06:00,236 INFO L140 encePairwiseOnDemand]: 623/626 looper letters, 60 selfloop transitions, 5 changer transitions 0/157 dead transitions. [2023-11-06 22:06:00,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 157 transitions, 480 flow [2023-11-06 22:06:00,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:06:00,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:06:00,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2150 transitions. [2023-11-06 22:06:00,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5724174653887114 [2023-11-06 22:06:00,245 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2150 transitions. [2023-11-06 22:06:00,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2150 transitions. [2023-11-06 22:06:00,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:06:00,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2150 transitions. [2023-11-06 22:06:00,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 358.3333333333333) internal successors, (2150), 6 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:00,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 626.0) internal successors, (4382), 7 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:00,267 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 626.0) internal successors, (4382), 7 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:00,268 INFO L175 Difference]: Start difference. First operand has 155 places, 154 transitions, 338 flow. Second operand 6 states and 2150 transitions. [2023-11-06 22:06:00,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 157 transitions, 480 flow [2023-11-06 22:06:00,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 157 transitions, 476 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:06:00,280 INFO L231 Difference]: Finished difference. Result has 162 places, 157 transitions, 370 flow [2023-11-06 22:06:00,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=370, PETRI_PLACES=162, PETRI_TRANSITIONS=157} [2023-11-06 22:06:00,283 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, 8 predicate places. [2023-11-06 22:06:00,283 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 157 transitions, 370 flow [2023-11-06 22:06:00,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 348.57142857142856) internal successors, (2440), 7 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:00,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:06:00,285 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-06 22:06:00,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:06:00,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:00,491 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-11-06 22:06:00,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:00,491 INFO L85 PathProgramCache]: Analyzing trace with hash 927515814, now seen corresponding path program 2 times [2023-11-06 22:06:00,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:00,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701780124] [2023-11-06 22:06:00,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:00,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:00,850 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:06:00,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:00,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701780124] [2023-11-06 22:06:00,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701780124] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:00,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570828405] [2023-11-06 22:06:00,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:06:00,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:00,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:00,853 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:00,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:06:01,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:06:01,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:06:01,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:06:01,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:01,135 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:06:01,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:01,201 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:06:01,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570828405] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:06:01,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:06:01,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:06:01,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345615310] [2023-11-06 22:06:01,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:01,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:06:01,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:01,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:06:01,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:06:01,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 626 [2023-11-06 22:06:01,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 157 transitions, 370 flow. Second operand has 13 states, 13 states have (on average 348.3076923076923) internal successors, (4528), 13 states have internal predecessors, (4528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:01,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:06:01,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 626 [2023-11-06 22:06:01,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:06:04,467 INFO L124 PetriNetUnfolderBase]: 6989/18396 cut-off events. [2023-11-06 22:06:04,467 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2023-11-06 22:06:04,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29341 conditions, 18396 events. 6989/18396 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 177246 event pairs, 6594 based on Foata normal form. 6/16439 useless extension candidates. Maximal degree in co-relation 29331. Up to 10776 conditions per place. [2023-11-06 22:06:04,585 INFO L140 encePairwiseOnDemand]: 623/626 looper letters, 60 selfloop transitions, 11 changer transitions 0/163 dead transitions. [2023-11-06 22:06:04,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 163 transitions, 548 flow [2023-11-06 22:06:04,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:06:04,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:06:04,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4241 transitions. [2023-11-06 22:06:04,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5645633652822151 [2023-11-06 22:06:04,609 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4241 transitions. [2023-11-06 22:06:04,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4241 transitions. [2023-11-06 22:06:04,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:06:04,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4241 transitions. [2023-11-06 22:06:04,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 353.4166666666667) internal successors, (4241), 12 states have internal predecessors, (4241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:04,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 626.0) internal successors, (8138), 13 states have internal predecessors, (8138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:04,657 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 626.0) internal successors, (8138), 13 states have internal predecessors, (8138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:04,659 INFO L175 Difference]: Start difference. First operand has 162 places, 157 transitions, 370 flow. Second operand 12 states and 4241 transitions. [2023-11-06 22:06:04,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 163 transitions, 548 flow [2023-11-06 22:06:04,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 163 transitions, 534 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-06 22:06:04,667 INFO L231 Difference]: Finished difference. Result has 178 places, 163 transitions, 440 flow [2023-11-06 22:06:04,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=440, PETRI_PLACES=178, PETRI_TRANSITIONS=163} [2023-11-06 22:06:04,670 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, 24 predicate places. [2023-11-06 22:06:04,670 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 163 transitions, 440 flow [2023-11-06 22:06:04,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 348.3076923076923) internal successors, (4528), 13 states have internal predecessors, (4528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:04,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:06:04,673 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-06 22:06:04,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:04,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:04,879 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-11-06 22:06:04,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:04,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1062318342, now seen corresponding path program 3 times [2023-11-06 22:06:04,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:04,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535010106] [2023-11-06 22:06:04,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:04,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:05,919 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:06:05,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:05,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535010106] [2023-11-06 22:06:05,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535010106] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:05,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112485223] [2023-11-06 22:06:05,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:06:05,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:05,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:05,921 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:05,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355c05da-626a-409c-b865-0a37ea2465c4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process