./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 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_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8 --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 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 11:15:12,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:15:12,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:15:12,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:15:12,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:15:12,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:15:12,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:15:12,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:15:12,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:15:12,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:15:12,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:15:12,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:15:12,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:15:12,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:15:12,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:15:12,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:15:12,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:15:12,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:15:12,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:15:12,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:15:12,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:15:12,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:15:12,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:15:12,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:15:12,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:15:12,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:15:12,639 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:15:12,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:15:12,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:15:12,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:15:12,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:15:12,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:15:12,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:15:12,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:15:12,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:15:12,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:15:12,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:15:12,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:15:12,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:15:12,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:15:12,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:15:12,648 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 11:15:12,672 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:15:12,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:15:12,673 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:15:12,673 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:15:12,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:15:12,674 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:15:12,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:15:12,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:15:12,675 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:15:12,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:15:12,675 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:15:12,675 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:15:12,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:15:12,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:15:12,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:15:12,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:15:12,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:15:12,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:15:12,676 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 11:15:12,677 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:15:12,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:15:12,677 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:15:12,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:15:12,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:15:12,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:15:12,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:15:12,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:15:12,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:15:12,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:15:12,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:15:12,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:15:12,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:15:12,679 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:15:12,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:15:12,679 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:15:12,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:15:12,680 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:15:12,680 INFO L138 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_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f [2022-12-13 11:15:12,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:15:12,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:15:12,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:15:12,881 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:15:12,882 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:15:12,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i [2022-12-13 11:15:15,491 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:15:15,679 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:15:15,679 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i [2022-12-13 11:15:15,688 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/data/27686c297/42e1019ffd0c42fe906c00de870a9ade/FLAG1e44a88ee [2022-12-13 11:15:15,700 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/data/27686c297/42e1019ffd0c42fe906c00de870a9ade [2022-12-13 11:15:15,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:15:15,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:15:15,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:15:15,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:15:15,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:15:15,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:15:15" (1/1) ... [2022-12-13 11:15:15,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab89e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:15:15, skipping insertion in model container [2022-12-13 11:15:15,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:15:15" (1/1) ... [2022-12-13 11:15:15,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:15:15,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:15:15,973 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i[30212,30225] [2022-12-13 11:15:15,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:15:16,008 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:15:16,038 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i[30212,30225] [2022-12-13 11:15:16,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:15:16,074 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:15:16,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:15:16 WrapperNode [2022-12-13 11:15:16,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:15:16,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:15:16,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:15:16,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:15:16,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:15:16" (1/1) ... [2022-12-13 11:15:16,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:15:16" (1/1) ... [2022-12-13 11:15:16,118 INFO L138 Inliner]: procedures = 173, calls = 33, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 153 [2022-12-13 11:15:16,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:15:16,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:15:16,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:15:16,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:15:16,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:15:16" (1/1) ... [2022-12-13 11:15:16,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:15:16" (1/1) ... [2022-12-13 11:15:16,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:15:16" (1/1) ... [2022-12-13 11:15:16,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:15:16" (1/1) ... [2022-12-13 11:15:16,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:15:16" (1/1) ... [2022-12-13 11:15:16,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:15:16" (1/1) ... [2022-12-13 11:15:16,144 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:15:16" (1/1) ... [2022-12-13 11:15:16,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:15:16" (1/1) ... [2022-12-13 11:15:16,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:15:16,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:15:16,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:15:16,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:15:16,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:15:16" (1/1) ... [2022-12-13 11:15:16,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:15:16,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:15:16,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:15:16,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:15:16,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 11:15:16,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:15:16,207 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 11:15:16,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:15:16,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:15:16,208 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 11:15:16,208 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 11:15:16,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:15:16,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:15:16,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:15:16,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:15:16,210 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 11:15:16,318 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:15:16,320 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:15:16,542 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:15:16,551 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:15:16,551 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-12-13 11:15:16,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:15:16 BoogieIcfgContainer [2022-12-13 11:15:16,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:15:16,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:15:16,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:15:16,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:15:16,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:15:15" (1/3) ... [2022-12-13 11:15:16,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@752ce35a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:15:16, skipping insertion in model container [2022-12-13 11:15:16,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:15:16" (2/3) ... [2022-12-13 11:15:16,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@752ce35a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:15:16, skipping insertion in model container [2022-12-13 11:15:16,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:15:16" (3/3) ... [2022-12-13 11:15:16,562 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_20-callback_racefree.i [2022-12-13 11:15:16,571 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 11:15:16,582 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:15:16,582 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-13 11:15:16,582 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:15:16,637 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 11:15:16,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 172 transitions, 352 flow [2022-12-13 11:15:16,760 INFO L130 PetriNetUnfolder]: 26/270 cut-off events. [2022-12-13 11:15:16,760 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 11:15:16,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 270 events. 26/270 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 830 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 136. Up to 6 conditions per place. [2022-12-13 11:15:16,768 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 172 transitions, 352 flow [2022-12-13 11:15:16,773 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 172 transitions, 352 flow [2022-12-13 11:15:16,777 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:15:16,787 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 172 transitions, 352 flow [2022-12-13 11:15:16,789 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 172 transitions, 352 flow [2022-12-13 11:15:16,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 172 transitions, 352 flow [2022-12-13 11:15:16,832 INFO L130 PetriNetUnfolder]: 26/270 cut-off events. [2022-12-13 11:15:16,832 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 11:15:16,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 270 events. 26/270 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 830 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 136. Up to 6 conditions per place. [2022-12-13 11:15:16,835 INFO L119 LiptonReduction]: Number of co-enabled transitions 4992 [2022-12-13 11:15:19,777 INFO L134 LiptonReduction]: Checked pairs total: 10236 [2022-12-13 11:15:19,777 INFO L136 LiptonReduction]: Total number of compositions: 145 [2022-12-13 11:15:19,787 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:15:19,791 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;@3c55ec37, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:15:19,791 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-13 11:15:19,794 INFO L130 PetriNetUnfolder]: 2/10 cut-off events. [2022-12-13 11:15:19,794 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:15:19,794 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:15:19,794 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 11:15:19,795 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-12-13 11:15:19,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:15:19,798 INFO L85 PathProgramCache]: Analyzing trace with hash 18771493, now seen corresponding path program 1 times [2022-12-13 11:15:19,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:15:19,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488902202] [2022-12-13 11:15:19,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:15:19,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:15:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:15:19,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:15:19,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:15:19,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488902202] [2022-12-13 11:15:19,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488902202] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:15:19,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:15:19,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:15:19,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573014977] [2022-12-13 11:15:19,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:15:19,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:15:19,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:15:19,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:15:19,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:15:19,981 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 317 [2022-12-13 11:15:19,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 51 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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) [2022-12-13 11:15:19,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:15:19,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 317 [2022-12-13 11:15:19,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:15:20,070 INFO L130 PetriNetUnfolder]: 97/274 cut-off events. [2022-12-13 11:15:20,070 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 11:15:20,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 274 events. 97/274 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1169 event pairs, 0 based on Foata normal form. 48/291 useless extension candidates. Maximal degree in co-relation 465. Up to 204 conditions per place. [2022-12-13 11:15:20,073 INFO L137 encePairwiseOnDemand]: 304/317 looper letters, 30 selfloop transitions, 2 changer transitions 2/47 dead transitions. [2022-12-13 11:15:20,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 170 flow [2022-12-13 11:15:20,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:15:20,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:15:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2022-12-13 11:15:20,085 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5331230283911672 [2022-12-13 11:15:20,085 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions. [2022-12-13 11:15:20,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions. [2022-12-13 11:15:20,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:15:20,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions. [2022-12-13 11:15:20,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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) [2022-12-13 11:15:20,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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) [2022-12-13 11:15:20,096 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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) [2022-12-13 11:15:20,097 INFO L175 Difference]: Start difference. First operand has 42 places, 51 transitions, 110 flow. Second operand 3 states and 507 transitions. [2022-12-13 11:15:20,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 170 flow [2022-12-13 11:15:20,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:15:20,101 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 91 flow [2022-12-13 11:15:20,103 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2022-12-13 11:15:20,107 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2022-12-13 11:15:20,107 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 91 flow [2022-12-13 11:15:20,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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) [2022-12-13 11:15:20,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:15:20,108 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 11:15:20,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:15:20,109 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-12-13 11:15:20,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:15:20,109 INFO L85 PathProgramCache]: Analyzing trace with hash 847839909, now seen corresponding path program 1 times [2022-12-13 11:15:20,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:15:20,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057095704] [2022-12-13 11:15:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:15:20,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:15:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:15:20,139 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:15:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:15:20,169 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:15:20,170 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 11:15:20,171 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2022-12-13 11:15:20,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2022-12-13 11:15:20,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2022-12-13 11:15:20,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2022-12-13 11:15:20,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2022-12-13 11:15:20,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2022-12-13 11:15:20,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2022-12-13 11:15:20,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2022-12-13 11:15:20,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:15:20,174 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 11:15:20,176 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 11:15:20,176 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 11:15:20,190 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 11:15:20,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 198 transitions, 414 flow [2022-12-13 11:15:20,246 INFO L130 PetriNetUnfolder]: 43/425 cut-off events. [2022-12-13 11:15:20,246 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 11:15:20,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 425 events. 43/425 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1688 event pairs, 0 based on Foata normal form. 0/360 useless extension candidates. Maximal degree in co-relation 272. Up to 9 conditions per place. [2022-12-13 11:15:20,248 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 198 transitions, 414 flow [2022-12-13 11:15:20,250 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 198 transitions, 414 flow [2022-12-13 11:15:20,251 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:15:20,251 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 198 transitions, 414 flow [2022-12-13 11:15:20,251 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 198 transitions, 414 flow [2022-12-13 11:15:20,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 198 transitions, 414 flow [2022-12-13 11:15:20,280 INFO L130 PetriNetUnfolder]: 43/425 cut-off events. [2022-12-13 11:15:20,280 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 11:15:20,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 425 events. 43/425 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1688 event pairs, 0 based on Foata normal form. 0/360 useless extension candidates. Maximal degree in co-relation 272. Up to 9 conditions per place. [2022-12-13 11:15:20,286 INFO L119 LiptonReduction]: Number of co-enabled transitions 11664 [2022-12-13 11:15:22,815 INFO L134 LiptonReduction]: Checked pairs total: 26109 [2022-12-13 11:15:22,815 INFO L136 LiptonReduction]: Total number of compositions: 163 [2022-12-13 11:15:22,816 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:15:22,818 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;@3c55ec37, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:15:22,818 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-12-13 11:15:22,819 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2022-12-13 11:15:22,820 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:15:22,820 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:15:22,820 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 11:15:22,820 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 11:15:22,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:15:22,820 INFO L85 PathProgramCache]: Analyzing trace with hash 30712584, now seen corresponding path program 1 times [2022-12-13 11:15:22,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:15:22,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757025229] [2022-12-13 11:15:22,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:15:22,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:15:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:15:22,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:15:22,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:15:22,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757025229] [2022-12-13 11:15:22,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757025229] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:15:22,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:15:22,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:15:22,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243159435] [2022-12-13 11:15:22,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:15:22,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:15:22,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:15:22,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:15:22,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:15:22,866 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 361 [2022-12-13 11:15:22,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 65 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 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) [2022-12-13 11:15:22,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:15:22,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 361 [2022-12-13 11:15:22,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:15:23,160 INFO L130 PetriNetUnfolder]: 1722/3293 cut-off events. [2022-12-13 11:15:23,160 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-12-13 11:15:23,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6121 conditions, 3293 events. 1722/3293 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 20215 event pairs, 738 based on Foata normal form. 242/3225 useless extension candidates. Maximal degree in co-relation 806. Up to 2763 conditions per place. [2022-12-13 11:15:23,176 INFO L137 encePairwiseOnDemand]: 346/361 looper letters, 43 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2022-12-13 11:15:23,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 61 transitions, 230 flow [2022-12-13 11:15:23,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:15:23,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:15:23,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 579 transitions. [2022-12-13 11:15:23,180 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5346260387811634 [2022-12-13 11:15:23,180 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 579 transitions. [2022-12-13 11:15:23,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 579 transitions. [2022-12-13 11:15:23,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:15:23,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 579 transitions. [2022-12-13 11:15:23,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 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) [2022-12-13 11:15:23,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 361.0) internal successors, (1444), 4 states have internal predecessors, (1444), 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) [2022-12-13 11:15:23,186 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 361.0) internal successors, (1444), 4 states have internal predecessors, (1444), 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) [2022-12-13 11:15:23,187 INFO L175 Difference]: Start difference. First operand has 55 places, 65 transitions, 148 flow. Second operand 3 states and 579 transitions. [2022-12-13 11:15:23,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 61 transitions, 230 flow [2022-12-13 11:15:23,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 61 transitions, 230 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:15:23,189 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 136 flow [2022-12-13 11:15:23,189 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=361, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2022-12-13 11:15:23,190 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2022-12-13 11:15:23,190 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 136 flow [2022-12-13 11:15:23,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 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) [2022-12-13 11:15:23,190 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:15:23,190 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:15:23,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:15:23,191 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 11:15:23,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:15:23,191 INFO L85 PathProgramCache]: Analyzing trace with hash -417920110, now seen corresponding path program 1 times [2022-12-13 11:15:23,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:15:23,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634571068] [2022-12-13 11:15:23,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:15:23,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:15:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:15:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:15:23,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:15:23,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634571068] [2022-12-13 11:15:23,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634571068] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:15:23,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:15:23,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:15:23,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820396353] [2022-12-13 11:15:23,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:15:23,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:15:23,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:15:23,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:15:23,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:15:23,248 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 361 [2022-12-13 11:15:23,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 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) [2022-12-13 11:15:23,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:15:23,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 361 [2022-12-13 11:15:23,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:15:23,922 INFO L130 PetriNetUnfolder]: 4520/7643 cut-off events. [2022-12-13 11:15:23,923 INFO L131 PetriNetUnfolder]: For 215/215 co-relation queries the response was YES. [2022-12-13 11:15:23,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15182 conditions, 7643 events. 4520/7643 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 45232 event pairs, 1542 based on Foata normal form. 0/6901 useless extension candidates. Maximal degree in co-relation 15120. Up to 4597 conditions per place. [2022-12-13 11:15:23,946 INFO L137 encePairwiseOnDemand]: 349/361 looper letters, 72 selfloop transitions, 8 changer transitions 0/87 dead transitions. [2022-12-13 11:15:23,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 87 transitions, 380 flow [2022-12-13 11:15:23,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:15:23,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:15:23,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 571 transitions. [2022-12-13 11:15:23,949 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5272391505078485 [2022-12-13 11:15:23,949 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 571 transitions. [2022-12-13 11:15:23,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 571 transitions. [2022-12-13 11:15:23,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:15:23,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 571 transitions. [2022-12-13 11:15:23,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 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) [2022-12-13 11:15:23,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 361.0) internal successors, (1444), 4 states have internal predecessors, (1444), 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) [2022-12-13 11:15:23,953 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 361.0) internal successors, (1444), 4 states have internal predecessors, (1444), 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) [2022-12-13 11:15:23,953 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 136 flow. Second operand 3 states and 571 transitions. [2022-12-13 11:15:23,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 87 transitions, 380 flow [2022-12-13 11:15:23,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 87 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:15:23,956 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 190 flow [2022-12-13 11:15:23,956 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=361, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2022-12-13 11:15:23,957 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2022-12-13 11:15:23,957 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 190 flow [2022-12-13 11:15:23,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 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) [2022-12-13 11:15:23,958 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:15:23,958 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 11:15:23,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:15:23,958 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 11:15:23,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:15:23,959 INFO L85 PathProgramCache]: Analyzing trace with hash 349560657, now seen corresponding path program 1 times [2022-12-13 11:15:23,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:15:23,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573396138] [2022-12-13 11:15:23,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:15:23,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:15:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:15:23,979 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:15:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:15:23,997 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:15:23,997 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 11:15:23,998 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-12-13 11:15:23,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2022-12-13 11:15:23,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2022-12-13 11:15:23,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2022-12-13 11:15:23,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2022-12-13 11:15:23,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2022-12-13 11:15:23,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2022-12-13 11:15:23,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2022-12-13 11:15:23,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2022-12-13 11:15:23,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 11:15:23,999 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 11:15:24,000 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 11:15:24,000 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 11:15:24,017 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 11:15:24,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 224 transitions, 478 flow [2022-12-13 11:15:24,078 INFO L130 PetriNetUnfolder]: 65/625 cut-off events. [2022-12-13 11:15:24,078 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 11:15:24,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 653 conditions, 625 events. 65/625 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2787 event pairs, 1 based on Foata normal form. 0/529 useless extension candidates. Maximal degree in co-relation 433. Up to 16 conditions per place. [2022-12-13 11:15:24,079 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 224 transitions, 478 flow [2022-12-13 11:15:24,082 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 224 transitions, 478 flow [2022-12-13 11:15:24,082 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:15:24,082 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 208 places, 224 transitions, 478 flow [2022-12-13 11:15:24,082 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 208 places, 224 transitions, 478 flow [2022-12-13 11:15:24,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 224 transitions, 478 flow [2022-12-13 11:15:24,126 INFO L130 PetriNetUnfolder]: 65/625 cut-off events. [2022-12-13 11:15:24,126 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 11:15:24,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 653 conditions, 625 events. 65/625 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2787 event pairs, 1 based on Foata normal form. 0/529 useless extension candidates. Maximal degree in co-relation 433. Up to 16 conditions per place. [2022-12-13 11:15:24,139 INFO L119 LiptonReduction]: Number of co-enabled transitions 19440 [2022-12-13 11:15:26,972 INFO L134 LiptonReduction]: Checked pairs total: 47102 [2022-12-13 11:15:26,972 INFO L136 LiptonReduction]: Total number of compositions: 185 [2022-12-13 11:15:26,974 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:15:26,975 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;@3c55ec37, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:15:26,975 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-12-13 11:15:26,976 INFO L130 PetriNetUnfolder]: 2/10 cut-off events. [2022-12-13 11:15:26,976 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:15:26,976 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:15:26,976 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 11:15:26,976 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-12-13 11:15:26,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:15:26,977 INFO L85 PathProgramCache]: Analyzing trace with hash 44050613, now seen corresponding path program 1 times [2022-12-13 11:15:26,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:15:26,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995130778] [2022-12-13 11:15:26,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:15:26,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:15:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:15:26,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:15:26,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:15:26,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995130778] [2022-12-13 11:15:26,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995130778] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:15:26,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:15:26,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:15:26,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662457461] [2022-12-13 11:15:26,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:15:26,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:15:26,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:15:26,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:15:26,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:15:27,010 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 409 [2022-12-13 11:15:27,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 77 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 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) [2022-12-13 11:15:27,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:15:27,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 409 [2022-12-13 11:15:27,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:15:28,095 INFO L130 PetriNetUnfolder]: 9981/16803 cut-off events. [2022-12-13 11:15:28,095 INFO L131 PetriNetUnfolder]: For 495/495 co-relation queries the response was YES. [2022-12-13 11:15:28,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31486 conditions, 16803 events. 9981/16803 cut-off events. For 495/495 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 125762 event pairs, 6021 based on Foata normal form. 3908/18978 useless extension candidates. Maximal degree in co-relation 4569. Up to 14302 conditions per place. [2022-12-13 11:15:28,154 INFO L137 encePairwiseOnDemand]: 392/409 looper letters, 46 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2022-12-13 11:15:28,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 70 transitions, 266 flow [2022-12-13 11:15:28,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:15:28,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:15:28,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 644 transitions. [2022-12-13 11:15:28,156 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5248573757131214 [2022-12-13 11:15:28,156 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 644 transitions. [2022-12-13 11:15:28,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 644 transitions. [2022-12-13 11:15:28,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:15:28,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 644 transitions. [2022-12-13 11:15:28,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 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) [2022-12-13 11:15:28,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 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) [2022-12-13 11:15:28,160 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 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) [2022-12-13 11:15:28,160 INFO L175 Difference]: Start difference. First operand has 66 places, 77 transitions, 184 flow. Second operand 3 states and 644 transitions. [2022-12-13 11:15:28,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 70 transitions, 266 flow [2022-12-13 11:15:28,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 70 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:15:28,162 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 168 flow [2022-12-13 11:15:28,162 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2022-12-13 11:15:28,162 INFO L288 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2022-12-13 11:15:28,162 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 168 flow [2022-12-13 11:15:28,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 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) [2022-12-13 11:15:28,163 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:15:28,163 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:15:28,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:15:28,163 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-12-13 11:15:28,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:15:28,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1740305895, now seen corresponding path program 1 times [2022-12-13 11:15:28,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:15:28,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101621805] [2022-12-13 11:15:28,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:15:28,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:15:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:15:28,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:15:28,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:15:28,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101621805] [2022-12-13 11:15:28,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101621805] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:15:28,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:15:28,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:15:28,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400548787] [2022-12-13 11:15:28,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:15:28,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:15:28,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:15:28,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:15:28,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:15:28,205 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 409 [2022-12-13 11:15:28,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 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) [2022-12-13 11:15:28,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:15:28,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 409 [2022-12-13 11:15:28,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:15:31,530 INFO L130 PetriNetUnfolder]: 34416/52357 cut-off events. [2022-12-13 11:15:31,531 INFO L131 PetriNetUnfolder]: For 1475/1475 co-relation queries the response was YES. [2022-12-13 11:15:31,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103217 conditions, 52357 events. 34416/52357 cut-off events. For 1475/1475 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 375164 event pairs, 13494 based on Foata normal form. 0/47212 useless extension candidates. Maximal degree in co-relation 103164. Up to 33212 conditions per place. [2022-12-13 11:15:31,739 INFO L137 encePairwiseOnDemand]: 394/409 looper letters, 79 selfloop transitions, 10 changer transitions 0/101 dead transitions. [2022-12-13 11:15:31,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 101 transitions, 448 flow [2022-12-13 11:15:31,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:15:31,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:15:31,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 632 transitions. [2022-12-13 11:15:31,741 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.515077424612877 [2022-12-13 11:15:31,741 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 632 transitions. [2022-12-13 11:15:31,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 632 transitions. [2022-12-13 11:15:31,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:15:31,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 632 transitions. [2022-12-13 11:15:31,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 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) [2022-12-13 11:15:31,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 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) [2022-12-13 11:15:31,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 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) [2022-12-13 11:15:31,744 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 168 flow. Second operand 3 states and 632 transitions. [2022-12-13 11:15:31,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 101 transitions, 448 flow [2022-12-13 11:15:31,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 101 transitions, 445 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:15:31,753 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 240 flow [2022-12-13 11:15:31,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2022-12-13 11:15:31,754 INFO L288 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2022-12-13 11:15:31,754 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 240 flow [2022-12-13 11:15:31,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 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) [2022-12-13 11:15:31,755 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:15:31,755 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:15:31,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 11:15:31,755 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-12-13 11:15:31,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:15:31,756 INFO L85 PathProgramCache]: Analyzing trace with hash -452329208, now seen corresponding path program 1 times [2022-12-13 11:15:31,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:15:31,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957050544] [2022-12-13 11:15:31,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:15:31,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:15:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:15:31,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:15:31,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:15:31,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957050544] [2022-12-13 11:15:31,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957050544] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:15:31,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922750316] [2022-12-13 11:15:31,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:15:31,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:15:31,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:15:31,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:15:31,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:15:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:15:31,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 11:15:31,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:15:31,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:15:31,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:15:31,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922750316] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:15:31,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:15:31,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-12-13 11:15:31,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694290480] [2022-12-13 11:15:31,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:15:31,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:15:31,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:15:31,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:15:31,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:15:31,900 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 409 [2022-12-13 11:15:31,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 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) [2022-12-13 11:15:31,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:15:31,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 409 [2022-12-13 11:15:31,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:15:35,010 INFO L130 PetriNetUnfolder]: 27620/43880 cut-off events. [2022-12-13 11:15:35,011 INFO L131 PetriNetUnfolder]: For 17521/18167 co-relation queries the response was YES. [2022-12-13 11:15:35,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101957 conditions, 43880 events. 27620/43880 cut-off events. For 17521/18167 co-relation queries the response was YES. Maximal size of possible extension queue 1043. Compared 338846 event pairs, 19632 based on Foata normal form. 28/39326 useless extension candidates. Maximal degree in co-relation 21325. Up to 37688 conditions per place. [2022-12-13 11:15:35,156 INFO L137 encePairwiseOnDemand]: 403/409 looper letters, 61 selfloop transitions, 8 changer transitions 0/89 dead transitions. [2022-12-13 11:15:35,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 89 transitions, 440 flow [2022-12-13 11:15:35,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:15:35,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:15:35,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 614 transitions. [2022-12-13 11:15:35,159 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5004074979625102 [2022-12-13 11:15:35,159 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 614 transitions. [2022-12-13 11:15:35,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 614 transitions. [2022-12-13 11:15:35,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:15:35,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 614 transitions. [2022-12-13 11:15:35,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 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) [2022-12-13 11:15:35,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 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) [2022-12-13 11:15:35,162 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 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) [2022-12-13 11:15:35,162 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 240 flow. Second operand 3 states and 614 transitions. [2022-12-13 11:15:35,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 89 transitions, 440 flow [2022-12-13 11:15:35,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 89 transitions, 412 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:15:35,173 INFO L231 Difference]: Finished difference. Result has 70 places, 77 transitions, 286 flow [2022-12-13 11:15:35,173 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=70, PETRI_TRANSITIONS=77} [2022-12-13 11:15:35,174 INFO L288 CegarLoopForPetriNet]: 66 programPoint places, 4 predicate places. [2022-12-13 11:15:35,174 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 77 transitions, 286 flow [2022-12-13 11:15:35,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 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) [2022-12-13 11:15:35,174 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:15:35,174 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 11:15:35,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:15:35,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:15:35,375 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-12-13 11:15:35,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:15:35,376 INFO L85 PathProgramCache]: Analyzing trace with hash 763311070, now seen corresponding path program 1 times [2022-12-13 11:15:35,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:15:35,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26853334] [2022-12-13 11:15:35,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:15:35,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:15:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:15:35,406 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:15:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:15:35,426 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:15:35,426 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 11:15:35,426 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-12-13 11:15:35,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2022-12-13 11:15:35,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2022-12-13 11:15:35,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2022-12-13 11:15:35,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2022-12-13 11:15:35,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2022-12-13 11:15:35,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2022-12-13 11:15:35,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2022-12-13 11:15:35,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2022-12-13 11:15:35,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2022-12-13 11:15:35,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 11:15:35,427 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 11:15:35,428 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 11:15:35,428 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 11:15:35,445 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 11:15:35,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 250 transitions, 544 flow [2022-12-13 11:15:35,522 INFO L130 PetriNetUnfolder]: 99/917 cut-off events. [2022-12-13 11:15:35,522 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 11:15:35,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 917 events. 99/917 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4492 event pairs, 6 based on Foata normal form. 0/778 useless extension candidates. Maximal degree in co-relation 645. Up to 32 conditions per place. [2022-12-13 11:15:35,526 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 250 transitions, 544 flow [2022-12-13 11:15:35,528 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 250 transitions, 544 flow [2022-12-13 11:15:35,529 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:15:35,529 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 232 places, 250 transitions, 544 flow [2022-12-13 11:15:35,529 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 232 places, 250 transitions, 544 flow [2022-12-13 11:15:35,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 250 transitions, 544 flow [2022-12-13 11:15:35,601 INFO L130 PetriNetUnfolder]: 99/917 cut-off events. [2022-12-13 11:15:35,601 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 11:15:35,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 917 events. 99/917 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4492 event pairs, 6 based on Foata normal form. 0/778 useless extension candidates. Maximal degree in co-relation 645. Up to 32 conditions per place. [2022-12-13 11:15:35,618 INFO L119 LiptonReduction]: Number of co-enabled transitions 28512 [2022-12-13 11:15:38,367 INFO L134 LiptonReduction]: Checked pairs total: 69724 [2022-12-13 11:15:38,368 INFO L136 LiptonReduction]: Total number of compositions: 202 [2022-12-13 11:15:38,369 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:15:38,369 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;@3c55ec37, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:15:38,369 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-13 11:15:38,371 INFO L130 PetriNetUnfolder]: 2/8 cut-off events. [2022-12-13 11:15:38,371 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:15:38,371 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:15:38,371 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 11:15:38,371 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-12-13 11:15:38,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:15:38,372 INFO L85 PathProgramCache]: Analyzing trace with hash 58795149, now seen corresponding path program 1 times [2022-12-13 11:15:38,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:15:38,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384693739] [2022-12-13 11:15:38,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:15:38,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:15:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:15:38,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:15:38,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:15:38,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384693739] [2022-12-13 11:15:38,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384693739] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:15:38,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:15:38,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:15:38,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863437454] [2022-12-13 11:15:38,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:15:38,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:15:38,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:15:38,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:15:38,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:15:38,400 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 452 [2022-12-13 11:15:38,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 89 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 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) [2022-12-13 11:15:38,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:15:38,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 452 [2022-12-13 11:15:38,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:15:45,696 INFO L130 PetriNetUnfolder]: 81602/120089 cut-off events. [2022-12-13 11:15:45,697 INFO L131 PetriNetUnfolder]: For 5078/5078 co-relation queries the response was YES. [2022-12-13 11:15:45,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230897 conditions, 120089 events. 81602/120089 cut-off events. For 5078/5078 co-relation queries the response was YES. Maximal size of possible extension queue 3050. Compared 948979 event pairs, 58556 based on Foata normal form. 33158/142881 useless extension candidates. Maximal degree in co-relation 36205. Up to 108037 conditions per place. [2022-12-13 11:15:46,199 INFO L137 encePairwiseOnDemand]: 433/452 looper letters, 52 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2022-12-13 11:15:46,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 79 transitions, 310 flow [2022-12-13 11:15:46,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:15:46,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:15:46,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 712 transitions. [2022-12-13 11:15:46,201 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5250737463126843 [2022-12-13 11:15:46,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 712 transitions. [2022-12-13 11:15:46,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 712 transitions. [2022-12-13 11:15:46,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:15:46,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 712 transitions. [2022-12-13 11:15:46,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 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) [2022-12-13 11:15:46,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 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) [2022-12-13 11:15:46,205 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 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) [2022-12-13 11:15:46,205 INFO L175 Difference]: Start difference. First operand has 77 places, 89 transitions, 222 flow. Second operand 3 states and 712 transitions. [2022-12-13 11:15:46,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 79 transitions, 310 flow [2022-12-13 11:15:46,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 79 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:15:46,207 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 202 flow [2022-12-13 11:15:46,207 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2022-12-13 11:15:46,207 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2022-12-13 11:15:46,208 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 202 flow [2022-12-13 11:15:46,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 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) [2022-12-13 11:15:46,208 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:15:46,208 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:15:46,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 11:15:46,208 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-12-13 11:15:46,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:15:46,209 INFO L85 PathProgramCache]: Analyzing trace with hash -532091446, now seen corresponding path program 1 times [2022-12-13 11:15:46,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:15:46,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025260723] [2022-12-13 11:15:46,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:15:46,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:15:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:15:46,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:15:46,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:15:46,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025260723] [2022-12-13 11:15:46,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025260723] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:15:46,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:15:46,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:15:46,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52383636] [2022-12-13 11:15:46,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:15:46,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:15:46,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:15:46,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:15:46,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:15:46,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 452 [2022-12-13 11:15:46,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 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) [2022-12-13 11:15:46,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:15:46,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 452 [2022-12-13 11:15:46,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:16:13,413 INFO L130 PetriNetUnfolder]: 335619/470206 cut-off events. [2022-12-13 11:16:13,413 INFO L131 PetriNetUnfolder]: For 13587/13587 co-relation queries the response was YES. [2022-12-13 11:16:14,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927469 conditions, 470206 events. 335619/470206 cut-off events. For 13587/13587 co-relation queries the response was YES. Maximal size of possible extension queue 7829. Compared 3708290 event pairs, 145541 based on Foata normal form. 0/425504 useless extension candidates. Maximal degree in co-relation 927415. Up to 302997 conditions per place. [2022-12-13 11:16:15,721 INFO L137 encePairwiseOnDemand]: 434/452 looper letters, 92 selfloop transitions, 12 changer transitions 0/118 dead transitions. [2022-12-13 11:16:15,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 118 transitions, 538 flow [2022-12-13 11:16:15,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:16:15,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:16:15,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 699 transitions. [2022-12-13 11:16:15,724 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5154867256637168 [2022-12-13 11:16:15,724 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 699 transitions. [2022-12-13 11:16:15,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 699 transitions. [2022-12-13 11:16:15,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:16:15,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 699 transitions. [2022-12-13 11:16:15,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 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) [2022-12-13 11:16:15,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 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) [2022-12-13 11:16:15,728 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 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) [2022-12-13 11:16:15,728 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 202 flow. Second operand 3 states and 699 transitions. [2022-12-13 11:16:15,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 118 transitions, 538 flow [2022-12-13 11:16:15,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 118 transitions, 535 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:16:15,756 INFO L231 Difference]: Finished difference. Result has 80 places, 82 transitions, 292 flow [2022-12-13 11:16:15,756 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=80, PETRI_TRANSITIONS=82} [2022-12-13 11:16:15,757 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2022-12-13 11:16:15,757 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 292 flow [2022-12-13 11:16:15,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 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) [2022-12-13 11:16:15,757 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:16:15,757 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:16:15,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 11:16:15,757 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-12-13 11:16:15,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:16:15,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1234899997, now seen corresponding path program 1 times [2022-12-13 11:16:15,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:16:15,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161838294] [2022-12-13 11:16:15,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:16:15,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:16:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:16:15,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:16:15,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:16:15,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161838294] [2022-12-13 11:16:15,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161838294] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:16:15,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661800266] [2022-12-13 11:16:15,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:16:15,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:16:15,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:16:15,789 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:16:15,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:16:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:16:15,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 11:16:15,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:16:15,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:16:15,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:16:15,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661800266] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:16:15,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:16:15,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-12-13 11:16:15,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375467854] [2022-12-13 11:16:15,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:16:15,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:16:15,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:16:15,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:16:15,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:16:15,883 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 452 [2022-12-13 11:16:15,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 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) [2022-12-13 11:16:15,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:16:15,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 452 [2022-12-13 11:16:15,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:16:40,955 INFO L130 PetriNetUnfolder]: 268603/384870 cut-off events. [2022-12-13 11:16:40,956 INFO L131 PetriNetUnfolder]: For 187663/196464 co-relation queries the response was YES. [2022-12-13 11:16:41,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917210 conditions, 384870 events. 268603/384870 cut-off events. For 187663/196464 co-relation queries the response was YES. Maximal size of possible extension queue 7534. Compared 3217504 event pairs, 194263 based on Foata normal form. 304/345281 useless extension candidates. Maximal degree in co-relation 174569. Up to 341447 conditions per place. [2022-12-13 11:16:43,003 INFO L137 encePairwiseOnDemand]: 445/452 looper letters, 75 selfloop transitions, 10 changer transitions 0/108 dead transitions. [2022-12-13 11:16:43,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 108 transitions, 550 flow [2022-12-13 11:16:43,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:16:43,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:16:43,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2022-12-13 11:16:43,006 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5036873156342183 [2022-12-13 11:16:43,006 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2022-12-13 11:16:43,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2022-12-13 11:16:43,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:16:43,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2022-12-13 11:16:43,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 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) [2022-12-13 11:16:43,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 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) [2022-12-13 11:16:43,009 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 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) [2022-12-13 11:16:43,010 INFO L175 Difference]: Start difference. First operand has 80 places, 82 transitions, 292 flow. Second operand 3 states and 683 transitions. [2022-12-13 11:16:43,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 108 transitions, 550 flow [2022-12-13 11:16:43,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 108 transitions, 514 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:16:43,821 INFO L231 Difference]: Finished difference. Result has 81 places, 91 transitions, 352 flow [2022-12-13 11:16:43,821 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=352, PETRI_PLACES=81, PETRI_TRANSITIONS=91} [2022-12-13 11:16:43,821 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2022-12-13 11:16:43,822 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 91 transitions, 352 flow [2022-12-13 11:16:43,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 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) [2022-12-13 11:16:43,822 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:16:43,822 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:16:43,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 11:16:44,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 11:16:44,024 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-12-13 11:16:44,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:16:44,025 INFO L85 PathProgramCache]: Analyzing trace with hash 160299806, now seen corresponding path program 1 times [2022-12-13 11:16:44,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:16:44,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108116886] [2022-12-13 11:16:44,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:16:44,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:16:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:16:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:16:44,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:16:44,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108116886] [2022-12-13 11:16:44,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108116886] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:16:44,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030235322] [2022-12-13 11:16:44,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:16:44,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:16:44,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:16:44,067 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:16:44,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 11:16:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:16:44,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 11:16:44,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:16:44,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:16:44,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:16:44,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:16:44,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030235322] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:16:44,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:16:44,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 11:16:44,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097474730] [2022-12-13 11:16:44,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:16:44,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:16:44,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:16:44,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:16:44,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:16:44,192 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 452 [2022-12-13 11:16:44,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 91 transitions, 352 flow. Second operand has 7 states, 7 states have (on average 215.14285714285714) internal successors, (1506), 7 states have internal predecessors, (1506), 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) [2022-12-13 11:16:44,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:16:44,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 452 [2022-12-13 11:16:44,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:17:07,153 INFO L130 PetriNetUnfolder]: 244674/350121 cut-off events. [2022-12-13 11:17:07,153 INFO L131 PetriNetUnfolder]: For 207371/218655 co-relation queries the response was YES. [2022-12-13 11:17:07,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859046 conditions, 350121 events. 244674/350121 cut-off events. For 207371/218655 co-relation queries the response was YES. Maximal size of possible extension queue 7181. Compared 2854752 event pairs, 31525 based on Foata normal form. 521/313205 useless extension candidates. Maximal degree in co-relation 221402. Up to 301488 conditions per place. [2022-12-13 11:17:09,412 INFO L137 encePairwiseOnDemand]: 448/452 looper letters, 121 selfloop transitions, 6 changer transitions 0/153 dead transitions. [2022-12-13 11:17:09,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 153 transitions, 820 flow [2022-12-13 11:17:09,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:17:09,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:17:09,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1377 transitions. [2022-12-13 11:17:09,416 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5077433628318584 [2022-12-13 11:17:09,416 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1377 transitions. [2022-12-13 11:17:09,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1377 transitions. [2022-12-13 11:17:09,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:17:09,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1377 transitions. [2022-12-13 11:17:09,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 229.5) internal successors, (1377), 6 states have internal predecessors, (1377), 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) [2022-12-13 11:17:09,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 452.0) internal successors, (3164), 7 states have internal predecessors, (3164), 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) [2022-12-13 11:17:09,421 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 452.0) internal successors, (3164), 7 states have internal predecessors, (3164), 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) [2022-12-13 11:17:09,421 INFO L175 Difference]: Start difference. First operand has 81 places, 91 transitions, 352 flow. Second operand 6 states and 1377 transitions. [2022-12-13 11:17:09,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 153 transitions, 820 flow [2022-12-13 11:17:09,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 153 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:17:09,758 INFO L231 Difference]: Finished difference. Result has 89 places, 94 transitions, 382 flow [2022-12-13 11:17:09,758 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=382, PETRI_PLACES=89, PETRI_TRANSITIONS=94} [2022-12-13 11:17:09,759 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 12 predicate places. [2022-12-13 11:17:09,759 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 94 transitions, 382 flow [2022-12-13 11:17:09,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 215.14285714285714) internal successors, (1506), 7 states have internal predecessors, (1506), 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) [2022-12-13 11:17:09,759 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:17:09,759 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-12-13 11:17:09,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 11:17:09,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd3d3ac-2363-40d5-b257-502af7286187/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:17:09,961 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-12-13 11:17:09,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:17:09,962 INFO L85 PathProgramCache]: Analyzing trace with hash -787594753, now seen corresponding path program 1 times [2022-12-13 11:17:09,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:17:09,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870313984] [2022-12-13 11:17:09,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:17:09,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:17:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:17:09,977 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:17:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:17:09,988 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:17:09,988 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 11:17:09,988 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-12-13 11:17:09,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-12-13 11:17:09,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-12-13 11:17:09,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-12-13 11:17:09,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-12-13 11:17:09,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-12-13 11:17:09,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-12-13 11:17:09,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-12-13 11:17:09,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-12-13 11:17:09,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-12-13 11:17:09,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-12-13 11:17:09,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 11:17:09,989 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-12-13 11:17:09,990 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 11:17:09,990 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-12-13 11:17:10,004 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-12-13 11:17:10,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 276 transitions, 612 flow [2022-12-13 11:17:10,144 INFO L130 PetriNetUnfolder]: 161/1397 cut-off events. [2022-12-13 11:17:10,145 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-12-13 11:17:10,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1508 conditions, 1397 events. 161/1397 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 7666 event pairs, 23 based on Foata normal form. 0/1191 useless extension candidates. Maximal degree in co-relation 962. Up to 80 conditions per place. [2022-12-13 11:17:10,152 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 276 transitions, 612 flow [2022-12-13 11:17:10,156 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 276 transitions, 612 flow [2022-12-13 11:17:10,157 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:17:10,157 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 276 transitions, 612 flow [2022-12-13 11:17:10,157 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 276 transitions, 612 flow [2022-12-13 11:17:10,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 276 transitions, 612 flow [2022-12-13 11:17:10,293 INFO L130 PetriNetUnfolder]: 161/1397 cut-off events. [2022-12-13 11:17:10,293 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-12-13 11:17:10,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1508 conditions, 1397 events. 161/1397 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 7666 event pairs, 23 based on Foata normal form. 0/1191 useless extension candidates. Maximal degree in co-relation 962. Up to 80 conditions per place. [2022-12-13 11:17:10,330 INFO L119 LiptonReduction]: Number of co-enabled transitions 38880 [2022-12-13 11:17:13,155 INFO L134 LiptonReduction]: Checked pairs total: 93076 [2022-12-13 11:17:13,155 INFO L136 LiptonReduction]: Total number of compositions: 224 [2022-12-13 11:17:13,157 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:17:13,157 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;@3c55ec37, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:17:13,157 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-13 11:17:13,159 INFO L130 PetriNetUnfolder]: 2/10 cut-off events. [2022-12-13 11:17:13,159 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:17:13,159 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:17:13,159 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 11:17:13,159 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-12-13 11:17:13,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:17:13,159 INFO L85 PathProgramCache]: Analyzing trace with hash 74955732, now seen corresponding path program 1 times [2022-12-13 11:17:13,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:17:13,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845140953] [2022-12-13 11:17:13,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:17:13,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:17:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:17:13,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:17:13,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:17:13,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845140953] [2022-12-13 11:17:13,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845140953] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:17:13,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:17:13,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:17:13,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132242422] [2022-12-13 11:17:13,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:17:13,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:17:13,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:17:13,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:17:13,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:17:13,185 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 500 [2022-12-13 11:17:13,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 101 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 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) [2022-12-13 11:17:13,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:17:13,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 500 [2022-12-13 11:17:13,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:18:47,668 INFO L130 PetriNetUnfolder]: 1066594/1441253 cut-off events. [2022-12-13 11:18:47,668 INFO L131 PetriNetUnfolder]: For 69274/69274 co-relation queries the response was YES. [2022-12-13 11:18:50,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2808448 conditions, 1441253 events. 1066594/1441253 cut-off events. For 69274/69274 co-relation queries the response was YES. Maximal size of possible extension queue 27517. Compared 11838666 event pairs, 825047 based on Foata normal form. 220659/1590767 useless extension candidates. Maximal degree in co-relation 378717. Up to 1334163 conditions per place. [2022-12-13 11:18:55,303 INFO L137 encePairwiseOnDemand]: 479/500 looper letters, 63 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2022-12-13 11:18:55,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 90 transitions, 370 flow [2022-12-13 11:18:55,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:18:55,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:18:55,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 785 transitions. [2022-12-13 11:18:55,305 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5233333333333333 [2022-12-13 11:18:55,305 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 785 transitions. [2022-12-13 11:18:55,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 785 transitions. [2022-12-13 11:18:55,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:18:55,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 785 transitions. [2022-12-13 11:18:55,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 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) [2022-12-13 11:18:55,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 500.0) internal successors, (2000), 4 states have internal predecessors, (2000), 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) [2022-12-13 11:18:55,309 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 500.0) internal successors, (2000), 4 states have internal predecessors, (2000), 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) [2022-12-13 11:18:55,309 INFO L175 Difference]: Start difference. First operand has 88 places, 101 transitions, 262 flow. Second operand 3 states and 785 transitions. [2022-12-13 11:18:55,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 90 transitions, 370 flow [2022-12-13 11:18:55,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 90 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:18:55,312 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 238 flow [2022-12-13 11:18:55,313 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=500, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2022-12-13 11:18:55,313 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 2 predicate places. [2022-12-13 11:18:55,313 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 238 flow [2022-12-13 11:18:55,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 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) [2022-12-13 11:18:55,314 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:18:55,314 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:18:55,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 11:18:55,314 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-12-13 11:18:55,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:18:55,314 INFO L85 PathProgramCache]: Analyzing trace with hash -405887495, now seen corresponding path program 1 times [2022-12-13 11:18:55,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:18:55,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233699317] [2022-12-13 11:18:55,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:18:55,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:18:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:18:55,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:18:55,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:18:55,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233699317] [2022-12-13 11:18:55,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233699317] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:18:55,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:18:55,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:18:55,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782446404] [2022-12-13 11:18:55,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:18:55,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:18:55,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:18:55,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:18:55,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:18:55,365 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 500 [2022-12-13 11:18:55,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 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) [2022-12-13 11:18:55,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:18:55,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 500 [2022-12-13 11:18:55,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand