./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/27_Boop_simple_vf.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accd96e1-6bf8-404e-ac36-351177a45635/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accd96e1-6bf8-404e-ac36-351177a45635/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accd96e1-6bf8-404e-ac36-351177a45635/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accd96e1-6bf8-404e-ac36-351177a45635/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/27_Boop_simple_vf.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accd96e1-6bf8-404e-ac36-351177a45635/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accd96e1-6bf8-404e-ac36-351177a45635/bin/uautomizer-tPACEb0tL8 --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 ce64fcfa63b9df647c320ea90e20b624e2dad5b9ca256083b6d2f56c3177560a --- 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-e04fb08 [2022-11-16 11:30:41,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:30:41,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:30:41,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:30:41,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:30:41,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:30:41,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:30:41,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:30:41,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:30:41,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:30:41,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:30:41,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:30:41,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:30:41,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:30:41,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:30:41,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:30:41,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:30:41,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:30:41,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:30:41,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:30:41,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:30:41,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:30:41,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:30:41,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:30:41,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:30:41,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:30:41,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:30:41,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:30:41,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:30:41,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:30:41,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:30:41,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:30:41,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:30:41,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:30:41,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:30:41,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:30:41,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:30:41,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:30:41,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:30:41,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:30:41,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:30:41,836 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accd96e1-6bf8-404e-ac36-351177a45635/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-16 11:30:41,894 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:30:41,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:30:41,895 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:30:41,895 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:30:41,896 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:30:41,896 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:30:41,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:30:41,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:30:41,897 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:30:41,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:30:41,899 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:30:41,899 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:30:41,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:30:41,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:30:41,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:30:41,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:30:41,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:30:41,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:30:41,900 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 11:30:41,901 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:30:41,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:30:41,901 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:30:41,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:30:41,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:30:41,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:30:41,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:30:41,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:30:41,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:30:41,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:30:41,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:30:41,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:30:41,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:30:41,904 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:30:41,904 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:30:41,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:30:41,904 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_accd96e1-6bf8-404e-ac36-351177a45635/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accd96e1-6bf8-404e-ac36-351177a45635/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce64fcfa63b9df647c320ea90e20b624e2dad5b9ca256083b6d2f56c3177560a [2022-11-16 11:30:42,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:30:42,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:30:42,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:30:42,276 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:30:42,278 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:30:42,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accd96e1-6bf8-404e-ac36-351177a45635/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-ext/27_Boop_simple_vf.i [2022-11-16 11:30:42,359 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accd96e1-6bf8-404e-ac36-351177a45635/bin/uautomizer-tPACEb0tL8/data/95f683cc5/795cfb7f45f041e59f266781826a12dc/FLAGdc5101278 [2022-11-16 11:30:42,977 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:30:42,978 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accd96e1-6bf8-404e-ac36-351177a45635/sv-benchmarks/c/pthread-ext/27_Boop_simple_vf.i [2022-11-16 11:30:43,003 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accd96e1-6bf8-404e-ac36-351177a45635/bin/uautomizer-tPACEb0tL8/data/95f683cc5/795cfb7f45f041e59f266781826a12dc/FLAGdc5101278 [2022-11-16 11:30:43,231 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accd96e1-6bf8-404e-ac36-351177a45635/bin/uautomizer-tPACEb0tL8/data/95f683cc5/795cfb7f45f041e59f266781826a12dc [2022-11-16 11:30:43,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:30:43,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:30:43,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:30:43,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:30:43,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:30:43,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:30:43" (1/1) ... [2022-11-16 11:30:43,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@196c9ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:43, skipping insertion in model container [2022-11-16 11:30:43,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:30:43" (1/1) ... [2022-11-16 11:30:43,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:30:43,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:30:43,643 WARN L229 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_accd96e1-6bf8-404e-ac36-351177a45635/sv-benchmarks/c/pthread-ext/27_Boop_simple_vf.i[30297,30310] [2022-11-16 11:30:43,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:30:43,672 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:30:43,723 WARN L229 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_accd96e1-6bf8-404e-ac36-351177a45635/sv-benchmarks/c/pthread-ext/27_Boop_simple_vf.i[30297,30310] [2022-11-16 11:30:43,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:30:43,759 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:30:43,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:43 WrapperNode [2022-11-16 11:30:43,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:30:43,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:30:43,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:30:43,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:30:43,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:43" (1/1) ... [2022-11-16 11:30:43,782 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:43" (1/1) ... [2022-11-16 11:30:43,803 INFO L138 Inliner]: procedures = 170, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 108 [2022-11-16 11:30:43,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:30:43,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:30:43,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:30:43,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:30:43,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:43" (1/1) ... [2022-11-16 11:30:43,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:43" (1/1) ... [2022-11-16 11:30:43,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:43" (1/1) ... [2022-11-16 11:30:43,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:43" (1/1) ... [2022-11-16 11:30:43,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:43" (1/1) ... [2022-11-16 11:30:43,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:43" (1/1) ... [2022-11-16 11:30:43,828 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:43" (1/1) ... [2022-11-16 11:30:43,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:43" (1/1) ... [2022-11-16 11:30:43,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:30:43,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:30:43,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:30:43,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:30:43,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:43" (1/1) ... [2022-11-16 11:30:43,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:30:43,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accd96e1-6bf8-404e-ac36-351177a45635/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:30:43,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accd96e1-6bf8-404e-ac36-351177a45635/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:30:43,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accd96e1-6bf8-404e-ac36-351177a45635/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:30:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-11-16 11:30:43,923 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-11-16 11:30:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-16 11:30:43,923 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-16 11:30:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:30:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:30:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:30:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:30:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:30:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:30:43,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:30:43,927 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:30:44,064 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:30:44,066 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:30:44,336 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:30:44,345 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:30:44,346 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-16 11:30:44,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:30:44 BoogieIcfgContainer [2022-11-16 11:30:44,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:30:44,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:30:44,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:30:44,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:30:44,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:30:43" (1/3) ... [2022-11-16 11:30:44,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70fcc5be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:30:44, skipping insertion in model container [2022-11-16 11:30:44,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:43" (2/3) ... [2022-11-16 11:30:44,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70fcc5be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:30:44, skipping insertion in model container [2022-11-16 11:30:44,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:30:44" (3/3) ... [2022-11-16 11:30:44,359 INFO L112 eAbstractionObserver]: Analyzing ICFG 27_Boop_simple_vf.i [2022-11-16 11:30:44,368 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:30:44,380 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:30:44,380 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2022-11-16 11:30:44,380 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:30:44,512 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:30:44,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 163 transitions, 336 flow [2022-11-16 11:30:44,665 INFO L130 PetriNetUnfolder]: 13/173 cut-off events. [2022-11-16 11:30:44,665 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:30:44,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 173 events. 13/173 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 362 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 154. Up to 4 conditions per place. [2022-11-16 11:30:44,677 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 163 transitions, 336 flow [2022-11-16 11:30:44,684 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 162 transitions, 332 flow [2022-11-16 11:30:44,698 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:30:44,705 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;@1737c3e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:30:44,705 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-11-16 11:30:44,719 INFO L130 PetriNetUnfolder]: 1/39 cut-off events. [2022-11-16 11:30:44,719 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:30:44,720 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:30:44,720 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:44,721 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-16 11:30:44,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:44,727 INFO L85 PathProgramCache]: Analyzing trace with hash -2004319028, now seen corresponding path program 1 times [2022-11-16 11:30:44,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:44,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481398955] [2022-11-16 11:30:44,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:44,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:45,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:30:45,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:30:45,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481398955] [2022-11-16 11:30:45,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481398955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:30:45,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:30:45,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:30:45,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397143089] [2022-11-16 11:30:45,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:30:45,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:30:45,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:30:45,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:30:45,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:30:45,120 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 163 [2022-11-16 11:30:45,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 162 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 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) [2022-11-16 11:30:45,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:30:45,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 163 [2022-11-16 11:30:45,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:30:45,538 INFO L130 PetriNetUnfolder]: 180/907 cut-off events. [2022-11-16 11:30:45,538 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-16 11:30:45,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1290 conditions, 907 events. 180/907 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5446 event pairs, 123 based on Foata normal form. 217/933 useless extension candidates. Maximal degree in co-relation 1261. Up to 305 conditions per place. [2022-11-16 11:30:45,554 INFO L137 encePairwiseOnDemand]: 149/163 looper letters, 32 selfloop transitions, 5 changer transitions 0/157 dead transitions. [2022-11-16 11:30:45,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 157 transitions, 399 flow [2022-11-16 11:30:45,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:30:45,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:30:45,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2022-11-16 11:30:45,579 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8732106339468303 [2022-11-16 11:30:45,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2022-11-16 11:30:45,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2022-11-16 11:30:45,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:30:45,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2022-11-16 11:30:45,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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) [2022-11-16 11:30:45,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 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) [2022-11-16 11:30:45,604 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 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) [2022-11-16 11:30:45,606 INFO L175 Difference]: Start difference. First operand has 156 places, 162 transitions, 332 flow. Second operand 3 states and 427 transitions. [2022-11-16 11:30:45,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 157 transitions, 399 flow [2022-11-16 11:30:45,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 157 transitions, 398 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:30:45,618 INFO L231 Difference]: Finished difference. Result has 152 places, 152 transitions, 341 flow [2022-11-16 11:30:45,621 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=152, PETRI_TRANSITIONS=152} [2022-11-16 11:30:45,625 INFO L288 CegarLoopForPetriNet]: 156 programPoint places, -4 predicate places. [2022-11-16 11:30:45,625 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 152 transitions, 341 flow [2022-11-16 11:30:45,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 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) [2022-11-16 11:30:45,626 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:30:45,626 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:45,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:30:45,626 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-16 11:30:45,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:45,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1255372414, now seen corresponding path program 1 times [2022-11-16 11:30:45,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:45,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917323895] [2022-11-16 11:30:45,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:45,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:45,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:30:45,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:30:45,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917323895] [2022-11-16 11:30:45,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917323895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:30:45,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:30:45,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:30:45,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234353787] [2022-11-16 11:30:45,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:30:45,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:30:45,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:30:45,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:30:45,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:30:45,741 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 163 [2022-11-16 11:30:45,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 152 transitions, 341 flow. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 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) [2022-11-16 11:30:45,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:30:45,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 163 [2022-11-16 11:30:45,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:30:45,860 INFO L130 PetriNetUnfolder]: 52/690 cut-off events. [2022-11-16 11:30:45,861 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-16 11:30:45,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 690 events. 52/690 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4065 event pairs, 7 based on Foata normal form. 0/558 useless extension candidates. Maximal degree in co-relation 771. Up to 29 conditions per place. [2022-11-16 11:30:45,867 INFO L137 encePairwiseOnDemand]: 159/163 looper letters, 10 selfloop transitions, 3 changer transitions 0/157 dead transitions. [2022-11-16 11:30:45,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 157 transitions, 377 flow [2022-11-16 11:30:45,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:30:45,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:30:45,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2022-11-16 11:30:45,869 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9243353783231084 [2022-11-16 11:30:45,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2022-11-16 11:30:45,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2022-11-16 11:30:45,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:30:45,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2022-11-16 11:30:45,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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) [2022-11-16 11:30:45,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 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) [2022-11-16 11:30:45,873 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 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) [2022-11-16 11:30:45,873 INFO L175 Difference]: Start difference. First operand has 152 places, 152 transitions, 341 flow. Second operand 3 states and 452 transitions. [2022-11-16 11:30:45,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 157 transitions, 377 flow [2022-11-16 11:30:45,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 157 transitions, 367 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:30:45,878 INFO L231 Difference]: Finished difference. Result has 154 places, 155 transitions, 357 flow [2022-11-16 11:30:45,878 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=357, PETRI_PLACES=154, PETRI_TRANSITIONS=155} [2022-11-16 11:30:45,879 INFO L288 CegarLoopForPetriNet]: 156 programPoint places, -2 predicate places. [2022-11-16 11:30:45,879 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 155 transitions, 357 flow [2022-11-16 11:30:45,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 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) [2022-11-16 11:30:45,880 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:30:45,880 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:45,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:30:45,880 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-16 11:30:45,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:45,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1107093435, now seen corresponding path program 1 times [2022-11-16 11:30:45,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:45,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528890677] [2022-11-16 11:30:45,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:45,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:45,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:30:45,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:30:45,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528890677] [2022-11-16 11:30:45,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528890677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:30:45,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:30:45,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:30:45,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573309309] [2022-11-16 11:30:45,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:30:45,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:30:45,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:30:45,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:30:45,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:30:45,952 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 163 [2022-11-16 11:30:45,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 155 transitions, 357 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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) [2022-11-16 11:30:45,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:30:45,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 163 [2022-11-16 11:30:45,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:30:46,220 INFO L130 PetriNetUnfolder]: 202/1563 cut-off events. [2022-11-16 11:30:46,220 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-16 11:30:46,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1988 conditions, 1563 events. 202/1563 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11865 event pairs, 99 based on Foata normal form. 0/1233 useless extension candidates. Maximal degree in co-relation 1957. Up to 302 conditions per place. [2022-11-16 11:30:46,234 INFO L137 encePairwiseOnDemand]: 157/163 looper letters, 23 selfloop transitions, 5 changer transitions 0/164 dead transitions. [2022-11-16 11:30:46,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 164 transitions, 434 flow [2022-11-16 11:30:46,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:30:46,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:30:46,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2022-11-16 11:30:46,236 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8875255623721882 [2022-11-16 11:30:46,236 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2022-11-16 11:30:46,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2022-11-16 11:30:46,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:30:46,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2022-11-16 11:30:46,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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) [2022-11-16 11:30:46,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 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) [2022-11-16 11:30:46,240 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 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) [2022-11-16 11:30:46,240 INFO L175 Difference]: Start difference. First operand has 154 places, 155 transitions, 357 flow. Second operand 3 states and 434 transitions. [2022-11-16 11:30:46,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 164 transitions, 434 flow [2022-11-16 11:30:46,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 164 transitions, 428 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:30:46,251 INFO L231 Difference]: Finished difference. Result has 156 places, 159 transitions, 389 flow [2022-11-16 11:30:46,251 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=156, PETRI_TRANSITIONS=159} [2022-11-16 11:30:46,254 INFO L288 CegarLoopForPetriNet]: 156 programPoint places, 0 predicate places. [2022-11-16 11:30:46,254 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 159 transitions, 389 flow [2022-11-16 11:30:46,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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) [2022-11-16 11:30:46,255 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:30:46,255 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:46,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:30:46,256 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-16 11:30:46,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:46,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1775215162, now seen corresponding path program 1 times [2022-11-16 11:30:46,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:46,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474561495] [2022-11-16 11:30:46,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:46,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:46,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:30:46,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:30:46,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474561495] [2022-11-16 11:30:46,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474561495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:30:46,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:30:46,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:30:46,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23965639] [2022-11-16 11:30:46,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:30:46,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:30:46,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:30:46,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:30:46,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:30:46,366 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 163 [2022-11-16 11:30:46,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 159 transitions, 389 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 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) [2022-11-16 11:30:46,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:30:46,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 163 [2022-11-16 11:30:46,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:30:46,459 INFO L130 PetriNetUnfolder]: 31/585 cut-off events. [2022-11-16 11:30:46,459 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:30:46,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 585 events. 31/585 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3338 event pairs, 0 based on Foata normal form. 0/475 useless extension candidates. Maximal degree in co-relation 618. Up to 14 conditions per place. [2022-11-16 11:30:46,465 INFO L137 encePairwiseOnDemand]: 159/163 looper letters, 5 selfloop transitions, 3 changer transitions 0/151 dead transitions. [2022-11-16 11:30:46,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 151 transitions, 366 flow [2022-11-16 11:30:46,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:30:46,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:30:46,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2022-11-16 11:30:46,467 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9263803680981595 [2022-11-16 11:30:46,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2022-11-16 11:30:46,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2022-11-16 11:30:46,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:30:46,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2022-11-16 11:30:46,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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) [2022-11-16 11:30:46,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 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) [2022-11-16 11:30:46,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 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) [2022-11-16 11:30:46,472 INFO L175 Difference]: Start difference. First operand has 156 places, 159 transitions, 389 flow. Second operand 3 states and 453 transitions. [2022-11-16 11:30:46,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 151 transitions, 366 flow [2022-11-16 11:30:46,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 151 transitions, 342 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-16 11:30:46,477 INFO L231 Difference]: Finished difference. Result has 152 places, 150 transitions, 337 flow [2022-11-16 11:30:46,477 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=337, PETRI_PLACES=152, PETRI_TRANSITIONS=150} [2022-11-16 11:30:46,478 INFO L288 CegarLoopForPetriNet]: 156 programPoint places, -4 predicate places. [2022-11-16 11:30:46,478 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 150 transitions, 337 flow [2022-11-16 11:30:46,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 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) [2022-11-16 11:30:46,479 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:30:46,480 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:46,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:30:46,480 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-16 11:30:46,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:46,481 INFO L85 PathProgramCache]: Analyzing trace with hash -371488796, now seen corresponding path program 1 times [2022-11-16 11:30:46,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:46,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768106486] [2022-11-16 11:30:46,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:46,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:30:46,502 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:30:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:30:46,537 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:30:46,537 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:30:46,538 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2022-11-16 11:30:46,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2022-11-16 11:30:46,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2022-11-16 11:30:46,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2022-11-16 11:30:46,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2022-11-16 11:30:46,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2022-11-16 11:30:46,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2022-11-16 11:30:46,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2022-11-16 11:30:46,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2022-11-16 11:30:46,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2022-11-16 11:30:46,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2022-11-16 11:30:46,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2022-11-16 11:30:46,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2022-11-16 11:30:46,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2022-11-16 11:30:46,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2022-11-16 11:30:46,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2022-11-16 11:30:46,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2022-11-16 11:30:46,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2022-11-16 11:30:46,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 36 remaining) [2022-11-16 11:30:46,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2022-11-16 11:30:46,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2022-11-16 11:30:46,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2022-11-16 11:30:46,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2022-11-16 11:30:46,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2022-11-16 11:30:46,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2022-11-16 11:30:46,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2022-11-16 11:30:46,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2022-11-16 11:30:46,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2022-11-16 11:30:46,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2022-11-16 11:30:46,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2022-11-16 11:30:46,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2022-11-16 11:30:46,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2022-11-16 11:30:46,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2022-11-16 11:30:46,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2022-11-16 11:30:46,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2022-11-16 11:30:46,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2022-11-16 11:30:46,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:30:46,553 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-16 11:30:46,555 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:30:46,555 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 11:30:46,627 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:30:46,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 288 transitions, 600 flow [2022-11-16 11:30:46,690 INFO L130 PetriNetUnfolder]: 17/223 cut-off events. [2022-11-16 11:30:46,690 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:30:46,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 223 events. 17/223 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 649 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 232. Up to 6 conditions per place. [2022-11-16 11:30:46,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 275 places, 288 transitions, 600 flow [2022-11-16 11:30:46,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 199 transitions, 413 flow [2022-11-16 11:30:46,700 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:30:46,702 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;@1737c3e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:30:46,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-11-16 11:30:46,708 INFO L130 PetriNetUnfolder]: 1/40 cut-off events. [2022-11-16 11:30:46,708 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:30:46,708 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:30:46,709 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:46,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-11-16 11:30:46,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:46,710 INFO L85 PathProgramCache]: Analyzing trace with hash -162181996, now seen corresponding path program 1 times [2022-11-16 11:30:46,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:46,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843479253] [2022-11-16 11:30:46,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:46,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:46,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:30:46,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:30:46,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843479253] [2022-11-16 11:30:46,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843479253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:30:46,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:30:46,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:30:46,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757415361] [2022-11-16 11:30:46,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:30:46,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:30:46,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:30:46,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:30:46,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:30:46,763 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 288 [2022-11-16 11:30:46,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 199 transitions, 413 flow. Second operand has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 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) [2022-11-16 11:30:46,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:30:46,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 288 [2022-11-16 11:30:46,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:30:48,145 INFO L130 PetriNetUnfolder]: 2433/7729 cut-off events. [2022-11-16 11:30:48,145 INFO L131 PetriNetUnfolder]: For 496/496 co-relation queries the response was YES. [2022-11-16 11:30:48,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11841 conditions, 7729 events. 2433/7729 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 74492 event pairs, 1870 based on Foata normal form. 1778/7685 useless extension candidates. Maximal degree in co-relation 11811. Up to 3286 conditions per place. [2022-11-16 11:30:48,267 INFO L137 encePairwiseOnDemand]: 271/288 looper letters, 44 selfloop transitions, 7 changer transitions 0/200 dead transitions. [2022-11-16 11:30:48,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 200 transitions, 525 flow [2022-11-16 11:30:48,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:30:48,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:30:48,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 719 transitions. [2022-11-16 11:30:48,271 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8321759259259259 [2022-11-16 11:30:48,271 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 719 transitions. [2022-11-16 11:30:48,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 719 transitions. [2022-11-16 11:30:48,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:30:48,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 719 transitions. [2022-11-16 11:30:48,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 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) [2022-11-16 11:30:48,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2022-11-16 11:30:48,277 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2022-11-16 11:30:48,277 INFO L175 Difference]: Start difference. First operand has 192 places, 199 transitions, 413 flow. Second operand 3 states and 719 transitions. [2022-11-16 11:30:48,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 200 transitions, 525 flow [2022-11-16 11:30:48,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 200 transitions, 522 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-16 11:30:48,282 INFO L231 Difference]: Finished difference. Result has 188 places, 190 transitions, 434 flow [2022-11-16 11:30:48,283 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=434, PETRI_PLACES=188, PETRI_TRANSITIONS=190} [2022-11-16 11:30:48,284 INFO L288 CegarLoopForPetriNet]: 192 programPoint places, -4 predicate places. [2022-11-16 11:30:48,284 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 190 transitions, 434 flow [2022-11-16 11:30:48,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 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) [2022-11-16 11:30:48,285 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:30:48,285 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:48,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:30:48,285 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-11-16 11:30:48,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:48,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1427947843, now seen corresponding path program 1 times [2022-11-16 11:30:48,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:48,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571780125] [2022-11-16 11:30:48,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:48,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:48,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:30:48,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:30:48,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571780125] [2022-11-16 11:30:48,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571780125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:30:48,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:30:48,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:30:48,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942813696] [2022-11-16 11:30:48,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:30:48,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:30:48,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:30:48,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:30:48,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:30:48,351 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 288 [2022-11-16 11:30:48,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 190 transitions, 434 flow. Second operand has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 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) [2022-11-16 11:30:48,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:30:48,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 288 [2022-11-16 11:30:48,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:30:49,029 INFO L130 PetriNetUnfolder]: 491/4018 cut-off events. [2022-11-16 11:30:49,029 INFO L131 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2022-11-16 11:30:49,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4919 conditions, 4018 events. 491/4018 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 42015 event pairs, 96 based on Foata normal form. 0/3199 useless extension candidates. Maximal degree in co-relation 4888. Up to 250 conditions per place. [2022-11-16 11:30:49,065 INFO L137 encePairwiseOnDemand]: 281/288 looper letters, 15 selfloop transitions, 5 changer transitions 0/198 dead transitions. [2022-11-16 11:30:49,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 198 transitions, 495 flow [2022-11-16 11:30:49,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:30:49,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:30:49,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 790 transitions. [2022-11-16 11:30:49,067 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9143518518518519 [2022-11-16 11:30:49,068 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 790 transitions. [2022-11-16 11:30:49,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 790 transitions. [2022-11-16 11:30:49,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:30:49,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 790 transitions. [2022-11-16 11:30:49,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 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) [2022-11-16 11:30:49,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2022-11-16 11:30:49,073 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2022-11-16 11:30:49,073 INFO L175 Difference]: Start difference. First operand has 188 places, 190 transitions, 434 flow. Second operand 3 states and 790 transitions. [2022-11-16 11:30:49,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 198 transitions, 495 flow [2022-11-16 11:30:49,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 198 transitions, 481 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:30:49,078 INFO L231 Difference]: Finished difference. Result has 190 places, 195 transitions, 464 flow [2022-11-16 11:30:49,079 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=190, PETRI_TRANSITIONS=195} [2022-11-16 11:30:49,079 INFO L288 CegarLoopForPetriNet]: 192 programPoint places, -2 predicate places. [2022-11-16 11:30:49,080 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 195 transitions, 464 flow [2022-11-16 11:30:49,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 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) [2022-11-16 11:30:49,080 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:30:49,080 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:49,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:30:49,081 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-11-16 11:30:49,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:49,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1882477257, now seen corresponding path program 1 times [2022-11-16 11:30:49,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:49,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458755042] [2022-11-16 11:30:49,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:49,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:49,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:30:49,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:30:49,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458755042] [2022-11-16 11:30:49,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458755042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:30:49,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:30:49,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:30:49,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916138317] [2022-11-16 11:30:49,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:30:49,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:30:49,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:30:49,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:30:49,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:30:49,114 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 288 [2022-11-16 11:30:49,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 195 transitions, 464 flow. Second operand has 3 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) [2022-11-16 11:30:49,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:30:49,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 288 [2022-11-16 11:30:49,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:30:52,395 INFO L130 PetriNetUnfolder]: 3855/19917 cut-off events. [2022-11-16 11:30:52,395 INFO L131 PetriNetUnfolder]: For 597/604 co-relation queries the response was YES. [2022-11-16 11:30:52,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26535 conditions, 19917 events. 3855/19917 cut-off events. For 597/604 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 261151 event pairs, 2384 based on Foata normal form. 0/15452 useless extension candidates. Maximal degree in co-relation 26503. Up to 5096 conditions per place. [2022-11-16 11:30:52,657 INFO L137 encePairwiseOnDemand]: 280/288 looper letters, 35 selfloop transitions, 7 changer transitions 0/211 dead transitions. [2022-11-16 11:30:52,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 211 transitions, 588 flow [2022-11-16 11:30:52,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:30:52,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:30:52,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 751 transitions. [2022-11-16 11:30:52,661 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8692129629629629 [2022-11-16 11:30:52,661 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 751 transitions. [2022-11-16 11:30:52,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 751 transitions. [2022-11-16 11:30:52,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:30:52,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 751 transitions. [2022-11-16 11:30:52,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 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) [2022-11-16 11:30:52,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2022-11-16 11:30:52,669 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2022-11-16 11:30:52,669 INFO L175 Difference]: Start difference. First operand has 190 places, 195 transitions, 464 flow. Second operand 3 states and 751 transitions. [2022-11-16 11:30:52,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 211 transitions, 588 flow [2022-11-16 11:30:52,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 211 transitions, 578 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:30:52,676 INFO L231 Difference]: Finished difference. Result has 192 places, 201 transitions, 508 flow [2022-11-16 11:30:52,677 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=192, PETRI_TRANSITIONS=201} [2022-11-16 11:30:52,678 INFO L288 CegarLoopForPetriNet]: 192 programPoint places, 0 predicate places. [2022-11-16 11:30:52,679 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 201 transitions, 508 flow [2022-11-16 11:30:52,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-11-16 11:30:52,680 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:30:52,680 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:52,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:30:52,681 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-11-16 11:30:52,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:52,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1656141403, now seen corresponding path program 1 times [2022-11-16 11:30:52,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:52,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976567711] [2022-11-16 11:30:52,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:52,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:52,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:30:52,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:30:52,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976567711] [2022-11-16 11:30:52,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976567711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:30:52,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:30:52,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:30:52,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132032131] [2022-11-16 11:30:52,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:30:52,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:30:52,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:30:52,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:30:52,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:30:52,767 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 288 [2022-11-16 11:30:52,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 201 transitions, 508 flow. Second operand has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 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) [2022-11-16 11:30:52,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:30:52,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 288 [2022-11-16 11:30:52,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:30:53,418 INFO L130 PetriNetUnfolder]: 276/3223 cut-off events. [2022-11-16 11:30:53,418 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2022-11-16 11:30:53,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3689 conditions, 3223 events. 276/3223 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 33814 event pairs, 37 based on Foata normal form. 0/2562 useless extension candidates. Maximal degree in co-relation 3655. Up to 149 conditions per place. [2022-11-16 11:30:53,458 INFO L137 encePairwiseOnDemand]: 282/288 looper letters, 9 selfloop transitions, 4 changer transitions 0/191 dead transitions. [2022-11-16 11:30:53,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 191 transitions, 484 flow [2022-11-16 11:30:53,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:30:53,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:30:53,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 798 transitions. [2022-11-16 11:30:53,461 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9236111111111112 [2022-11-16 11:30:53,461 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 798 transitions. [2022-11-16 11:30:53,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 798 transitions. [2022-11-16 11:30:53,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:30:53,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 798 transitions. [2022-11-16 11:30:53,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.0) internal successors, (798), 3 states have internal predecessors, (798), 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) [2022-11-16 11:30:53,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2022-11-16 11:30:53,467 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2022-11-16 11:30:53,467 INFO L175 Difference]: Start difference. First operand has 192 places, 201 transitions, 508 flow. Second operand 3 states and 798 transitions. [2022-11-16 11:30:53,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 191 transitions, 484 flow [2022-11-16 11:30:53,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 191 transitions, 472 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-16 11:30:53,472 INFO L231 Difference]: Finished difference. Result has 190 places, 189 transitions, 458 flow [2022-11-16 11:30:53,472 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=458, PETRI_PLACES=190, PETRI_TRANSITIONS=189} [2022-11-16 11:30:53,473 INFO L288 CegarLoopForPetriNet]: 192 programPoint places, -2 predicate places. [2022-11-16 11:30:53,473 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 189 transitions, 458 flow [2022-11-16 11:30:53,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 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) [2022-11-16 11:30:53,474 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:30:53,474 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:53,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:30:53,475 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-11-16 11:30:53,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:53,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1473157370, now seen corresponding path program 1 times [2022-11-16 11:30:53,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:53,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979425876] [2022-11-16 11:30:53,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:53,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:53,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:30:53,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:30:53,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979425876] [2022-11-16 11:30:53,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979425876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:30:53,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:30:53,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:30:53,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418182141] [2022-11-16 11:30:53,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:30:53,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:30:53,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:30:53,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:30:53,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:30:53,510 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 288 [2022-11-16 11:30:53,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 189 transitions, 458 flow. Second operand has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 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) [2022-11-16 11:30:53,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:30:53,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 288 [2022-11-16 11:30:53,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:30:54,498 INFO L130 PetriNetUnfolder]: 1012/7457 cut-off events. [2022-11-16 11:30:54,498 INFO L131 PetriNetUnfolder]: For 549/561 co-relation queries the response was YES. [2022-11-16 11:30:54,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10079 conditions, 7457 events. 1012/7457 cut-off events. For 549/561 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 90895 event pairs, 231 based on Foata normal form. 6/6057 useless extension candidates. Maximal degree in co-relation 10043. Up to 754 conditions per place. [2022-11-16 11:30:54,584 INFO L137 encePairwiseOnDemand]: 282/288 looper letters, 25 selfloop transitions, 8 changer transitions 0/203 dead transitions. [2022-11-16 11:30:54,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 203 transitions, 580 flow [2022-11-16 11:30:54,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:30:54,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:30:54,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 787 transitions. [2022-11-16 11:30:54,587 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9108796296296297 [2022-11-16 11:30:54,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 787 transitions. [2022-11-16 11:30:54,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 787 transitions. [2022-11-16 11:30:54,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:30:54,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 787 transitions. [2022-11-16 11:30:54,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 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) [2022-11-16 11:30:54,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2022-11-16 11:30:54,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2022-11-16 11:30:54,593 INFO L175 Difference]: Start difference. First operand has 190 places, 189 transitions, 458 flow. Second operand 3 states and 787 transitions. [2022-11-16 11:30:54,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 203 transitions, 580 flow [2022-11-16 11:30:54,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 203 transitions, 572 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:30:54,599 INFO L231 Difference]: Finished difference. Result has 192 places, 195 transitions, 516 flow [2022-11-16 11:30:54,600 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=516, PETRI_PLACES=192, PETRI_TRANSITIONS=195} [2022-11-16 11:30:54,600 INFO L288 CegarLoopForPetriNet]: 192 programPoint places, 0 predicate places. [2022-11-16 11:30:54,601 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 195 transitions, 516 flow [2022-11-16 11:30:54,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 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) [2022-11-16 11:30:54,601 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:30:54,602 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:54,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:30:54,602 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-11-16 11:30:54,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:54,603 INFO L85 PathProgramCache]: Analyzing trace with hash 771210497, now seen corresponding path program 1 times [2022-11-16 11:30:54,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:54,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51148200] [2022-11-16 11:30:54,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:54,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:30:54,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:30:54,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51148200] [2022-11-16 11:30:54,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51148200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:30:54,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:30:54,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:30:54,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900020625] [2022-11-16 11:30:54,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:30:54,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:30:54,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:30:54,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:30:54,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:30:54,639 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 288 [2022-11-16 11:30:54,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 195 transitions, 516 flow. Second operand has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 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) [2022-11-16 11:30:54,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:30:54,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 288 [2022-11-16 11:30:54,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:30:54,728 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([704] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][92], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 164#L746-6true, 302#true, Black: 298#(= 0 ~release_thr1~0), thr2Thread1of2ForFork0InUse, 197#L692-1true, thr2Thread2of2ForFork0InUse, thr1Thread1of2ForFork1InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), 31#L721-4true, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|), 55#L692-2true]) [2022-11-16 11:30:54,728 INFO L383 tUnfolder$Statistics]: this new event has 61 ancestors and is cut-off event [2022-11-16 11:30:54,728 INFO L386 tUnfolder$Statistics]: existing Event has 58 ancestors and is cut-off event [2022-11-16 11:30:54,729 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-16 11:30:54,729 INFO L386 tUnfolder$Statistics]: existing Event has 58 ancestors and is cut-off event [2022-11-16 11:30:54,732 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([704] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][92], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 164#L746-6true, 302#true, Black: 296#true, thr2Thread1of2ForFork0InUse, 197#L692-1true, thr2Thread2of2ForFork0InUse, thr1Thread1of2ForFork1InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), 31#L721-4true, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|), 55#L692-2true]) [2022-11-16 11:30:54,732 INFO L383 tUnfolder$Statistics]: this new event has 61 ancestors and is cut-off event [2022-11-16 11:30:54,732 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-16 11:30:54,732 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-16 11:30:54,733 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-16 11:30:54,735 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([668] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][87], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 122#L692-2true, 164#L746-6true, 302#true, 153#L692-1true, Black: 296#true, thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, thr1Thread1of2ForFork1InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), 31#L721-4true, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|)]) [2022-11-16 11:30:54,736 INFO L383 tUnfolder$Statistics]: this new event has 61 ancestors and is cut-off event [2022-11-16 11:30:54,736 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-16 11:30:54,736 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-16 11:30:54,736 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-16 11:30:54,743 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([668] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][87], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 164#L746-6true, 302#true, 122#L692-2true, 153#L692-1true, Black: 298#(= 0 ~release_thr1~0), thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, thr1Thread1of2ForFork1InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), 31#L721-4true, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|)]) [2022-11-16 11:30:54,743 INFO L383 tUnfolder$Statistics]: this new event has 61 ancestors and is cut-off event [2022-11-16 11:30:54,744 INFO L386 tUnfolder$Statistics]: existing Event has 58 ancestors and is cut-off event [2022-11-16 11:30:54,744 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-16 11:30:54,744 INFO L386 tUnfolder$Statistics]: existing Event has 58 ancestors and is cut-off event [2022-11-16 11:30:54,765 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([704] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][47], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 302#true, 164#L746-6true, Black: 296#true, 197#L692-1true, thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, thr1Thread1of2ForFork1InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), 124#L722-2true, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|), 55#L692-2true]) [2022-11-16 11:30:54,766 INFO L383 tUnfolder$Statistics]: this new event has 62 ancestors and is cut-off event [2022-11-16 11:30:54,766 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-16 11:30:54,766 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-16 11:30:54,766 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-16 11:30:54,773 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([704] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][47], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 164#L746-6true, 302#true, Black: 298#(= 0 ~release_thr1~0), thr2Thread1of2ForFork0InUse, 197#L692-1true, thr2Thread2of2ForFork0InUse, thr1Thread1of2ForFork1InUse, 124#L722-2true, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|), 55#L692-2true]) [2022-11-16 11:30:54,774 INFO L383 tUnfolder$Statistics]: this new event has 62 ancestors and is cut-off event [2022-11-16 11:30:54,774 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-16 11:30:54,774 INFO L386 tUnfolder$Statistics]: existing Event has 59 ancestors and is cut-off event [2022-11-16 11:30:54,774 INFO L386 tUnfolder$Statistics]: existing Event has 59 ancestors and is cut-off event [2022-11-16 11:30:54,780 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([668] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][57], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 302#true, 122#L692-2true, 164#L746-6true, 153#L692-1true, Black: 296#true, thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, thr1Thread1of2ForFork1InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), 124#L722-2true, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|)]) [2022-11-16 11:30:54,781 INFO L383 tUnfolder$Statistics]: this new event has 62 ancestors and is cut-off event [2022-11-16 11:30:54,781 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-16 11:30:54,781 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-16 11:30:54,781 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-16 11:30:54,783 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([668] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][57], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 302#true, 164#L746-6true, 122#L692-2true, Black: 298#(= 0 ~release_thr1~0), 153#L692-1true, thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, thr1Thread1of2ForFork1InUse, 124#L722-2true, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|)]) [2022-11-16 11:30:54,783 INFO L383 tUnfolder$Statistics]: this new event has 62 ancestors and is cut-off event [2022-11-16 11:30:54,783 INFO L386 tUnfolder$Statistics]: existing Event has 59 ancestors and is cut-off event [2022-11-16 11:30:54,783 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-16 11:30:54,783 INFO L386 tUnfolder$Statistics]: existing Event has 59 ancestors and is cut-off event [2022-11-16 11:30:54,796 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([668] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][57], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 164#L746-6true, 302#true, 153#L692-1true, Black: 296#true, thr2Thread1of2ForFork0InUse, 197#L692-1true, thr2Thread2of2ForFork0InUse, thr1Thread1of2ForFork1InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), 181#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|)]) [2022-11-16 11:30:54,796 INFO L383 tUnfolder$Statistics]: this new event has 63 ancestors and is cut-off event [2022-11-16 11:30:54,797 INFO L386 tUnfolder$Statistics]: existing Event has 60 ancestors and is cut-off event [2022-11-16 11:30:54,797 INFO L386 tUnfolder$Statistics]: existing Event has 60 ancestors and is cut-off event [2022-11-16 11:30:54,797 INFO L386 tUnfolder$Statistics]: existing Event has 60 ancestors and is cut-off event [2022-11-16 11:30:54,815 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([704] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][47], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 302#true, 164#L746-6true, 153#L692-1true, Black: 296#true, 197#L692-1true, thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, thr1Thread1of2ForFork1InUse, 124#L722-2true, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|)]) [2022-11-16 11:30:54,815 INFO L383 tUnfolder$Statistics]: this new event has 64 ancestors and is cut-off event [2022-11-16 11:30:54,816 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-16 11:30:54,816 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-16 11:30:54,816 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-16 11:30:54,816 INFO L381 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([704] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][47], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 302#true, 164#L746-6true, Black: 296#true, 197#L692-1true, thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, thr1Thread1of2ForFork1InUse, 124#L722-2true, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|), 55#L692-2true]) [2022-11-16 11:30:54,816 INFO L383 tUnfolder$Statistics]: this new event has 65 ancestors and is cut-off event [2022-11-16 11:30:54,817 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-16 11:30:54,817 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-16 11:30:54,817 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-16 11:30:54,817 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-16 11:30:54,818 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([668] L692-4-->L692-1: Formula: (= |v_#race~release_thr1~0_1| 0) InVars {} OutVars{#race~release_thr1~0=|v_#race~release_thr1~0_1|} AuxVars[] AssignedVars[#race~release_thr1~0][57], [Black: 284#true, 308#true, Black: 292#(= |thr1Thread1of2ForFork1_#t~nondet9#1| |#race~locked~0|), 122#L692-2true, 164#L746-6true, 302#true, 153#L692-1true, Black: 296#true, thr2Thread1of2ForFork0InUse, thr2Thread2of2ForFork0InUse, thr1Thread1of2ForFork1InUse, Black: 304#(= |#race~release_thr1~0| |thr1Thread1of2ForFork1_#t~nondet10#1|), 181#thr1Err2ASSERT_VIOLATIONDATA_RACEtrue, Black: 280#(= |thr1Thread1of2ForFork1_#t~nondet8#1| |#race~usecount~0|)]) [2022-11-16 11:30:54,818 INFO L383 tUnfolder$Statistics]: this new event has 64 ancestors and is cut-off event [2022-11-16 11:30:54,818 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-16 11:30:54,818 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-16 11:30:54,818 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-16 11:30:56,662 INFO L130 PetriNetUnfolder]: 1669/13245 cut-off events. [2022-11-16 11:30:56,662 INFO L131 PetriNetUnfolder]: For 710/726 co-relation queries the response was YES. [2022-11-16 11:30:56,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16881 conditions, 13245 events. 1669/13245 cut-off events. For 710/726 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 166896 event pairs, 312 based on Foata normal form. 3/10567 useless extension candidates. Maximal degree in co-relation 16845. Up to 873 conditions per place. [2022-11-16 11:30:56,857 INFO L137 encePairwiseOnDemand]: 283/288 looper letters, 18 selfloop transitions, 4 changer transitions 0/205 dead transitions. [2022-11-16 11:30:56,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 205 transitions, 588 flow [2022-11-16 11:30:56,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:30:56,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:30:56,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 791 transitions. [2022-11-16 11:30:56,860 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9155092592592593 [2022-11-16 11:30:56,861 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 791 transitions. [2022-11-16 11:30:56,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 791 transitions. [2022-11-16 11:30:56,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:30:56,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 791 transitions. [2022-11-16 11:30:56,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.6666666666667) internal successors, (791), 3 states have internal predecessors, (791), 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) [2022-11-16 11:30:56,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2022-11-16 11:30:56,867 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2022-11-16 11:30:56,867 INFO L175 Difference]: Start difference. First operand has 192 places, 195 transitions, 516 flow. Second operand 3 states and 791 transitions. [2022-11-16 11:30:56,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 205 transitions, 588 flow [2022-11-16 11:30:56,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 205 transitions, 572 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:30:56,874 INFO L231 Difference]: Finished difference. Result has 194 places, 199 transitions, 534 flow [2022-11-16 11:30:56,875 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=534, PETRI_PLACES=194, PETRI_TRANSITIONS=199} [2022-11-16 11:30:56,876 INFO L288 CegarLoopForPetriNet]: 192 programPoint places, 2 predicate places. [2022-11-16 11:30:56,876 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 199 transitions, 534 flow [2022-11-16 11:30:56,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 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) [2022-11-16 11:30:56,877 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:30:56,877 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:56,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:30:56,878 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-11-16 11:30:56,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:56,879 INFO L85 PathProgramCache]: Analyzing trace with hash 137172283, now seen corresponding path program 1 times [2022-11-16 11:30:56,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:56,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838912609] [2022-11-16 11:30:56,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:56,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:30:56,913 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:30:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:30:56,940 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:30:56,940 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:30:56,941 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (52 of 53 remaining) [2022-11-16 11:30:56,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (51 of 53 remaining) [2022-11-16 11:30:56,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (50 of 53 remaining) [2022-11-16 11:30:56,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (49 of 53 remaining) [2022-11-16 11:30:56,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (48 of 53 remaining) [2022-11-16 11:30:56,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (47 of 53 remaining) [2022-11-16 11:30:56,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (46 of 53 remaining) [2022-11-16 11:30:56,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (45 of 53 remaining) [2022-11-16 11:30:56,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (44 of 53 remaining) [2022-11-16 11:30:56,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (43 of 53 remaining) [2022-11-16 11:30:56,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (42 of 53 remaining) [2022-11-16 11:30:56,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (41 of 53 remaining) [2022-11-16 11:30:56,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (40 of 53 remaining) [2022-11-16 11:30:56,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (39 of 53 remaining) [2022-11-16 11:30:56,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (38 of 53 remaining) [2022-11-16 11:30:56,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (37 of 53 remaining) [2022-11-16 11:30:56,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (36 of 53 remaining) [2022-11-16 11:30:56,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (35 of 53 remaining) [2022-11-16 11:30:56,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (34 of 53 remaining) [2022-11-16 11:30:56,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (33 of 53 remaining) [2022-11-16 11:30:56,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (32 of 53 remaining) [2022-11-16 11:30:56,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (31 of 53 remaining) [2022-11-16 11:30:56,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (30 of 53 remaining) [2022-11-16 11:30:56,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (29 of 53 remaining) [2022-11-16 11:30:56,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (28 of 53 remaining) [2022-11-16 11:30:56,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (27 of 53 remaining) [2022-11-16 11:30:56,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (26 of 53 remaining) [2022-11-16 11:30:56,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (25 of 53 remaining) [2022-11-16 11:30:56,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (24 of 53 remaining) [2022-11-16 11:30:56,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (23 of 53 remaining) [2022-11-16 11:30:56,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (22 of 53 remaining) [2022-11-16 11:30:56,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (21 of 53 remaining) [2022-11-16 11:30:56,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (20 of 53 remaining) [2022-11-16 11:30:56,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (19 of 53 remaining) [2022-11-16 11:30:56,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (18 of 53 remaining) [2022-11-16 11:30:56,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 53 remaining) [2022-11-16 11:30:56,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 53 remaining) [2022-11-16 11:30:56,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (15 of 53 remaining) [2022-11-16 11:30:56,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (14 of 53 remaining) [2022-11-16 11:30:56,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (13 of 53 remaining) [2022-11-16 11:30:56,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 53 remaining) [2022-11-16 11:30:56,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (11 of 53 remaining) [2022-11-16 11:30:56,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 53 remaining) [2022-11-16 11:30:56,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 53 remaining) [2022-11-16 11:30:56,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (8 of 53 remaining) [2022-11-16 11:30:56,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 53 remaining) [2022-11-16 11:30:56,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 53 remaining) [2022-11-16 11:30:56,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 53 remaining) [2022-11-16 11:30:56,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (4 of 53 remaining) [2022-11-16 11:30:56,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (3 of 53 remaining) [2022-11-16 11:30:56,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (2 of 53 remaining) [2022-11-16 11:30:56,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (1 of 53 remaining) [2022-11-16 11:30:56,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (0 of 53 remaining) [2022-11-16 11:30:56,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:30:56,957 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:56,957 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:30:56,958 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 11:30:57,036 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:30:57,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 393 places, 413 transitions, 868 flow [2022-11-16 11:30:57,111 INFO L130 PetriNetUnfolder]: 21/273 cut-off events. [2022-11-16 11:30:57,111 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-16 11:30:57,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 273 events. 21/273 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 971 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 287. Up to 8 conditions per place. [2022-11-16 11:30:57,116 INFO L82 GeneralOperation]: Start removeDead. Operand has 393 places, 413 transitions, 868 flow [2022-11-16 11:30:57,121 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 236 transitions, 496 flow [2022-11-16 11:30:57,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:30:57,123 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;@1737c3e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:30:57,123 INFO L358 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2022-11-16 11:30:57,154 INFO L130 PetriNetUnfolder]: 1/41 cut-off events. [2022-11-16 11:30:57,154 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:30:57,164 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:30:57,164 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:57,164 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 66 more)] === [2022-11-16 11:30:57,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:57,165 INFO L85 PathProgramCache]: Analyzing trace with hash 2056791504, now seen corresponding path program 1 times [2022-11-16 11:30:57,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:57,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399025051] [2022-11-16 11:30:57,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:57,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:57,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:30:57,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:30:57,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399025051] [2022-11-16 11:30:57,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399025051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:30:57,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:30:57,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:30:57,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440007244] [2022-11-16 11:30:57,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:30:57,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:30:57,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:30:57,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:30:57,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:30:57,246 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 413 [2022-11-16 11:30:57,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 236 transitions, 496 flow. Second operand has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 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) [2022-11-16 11:30:57,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:30:57,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 413 [2022-11-16 11:30:57,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:31:05,218 INFO L130 PetriNetUnfolder]: 25188/65631 cut-off events. [2022-11-16 11:31:05,218 INFO L131 PetriNetUnfolder]: For 7242/7242 co-relation queries the response was YES. [2022-11-16 11:31:05,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103867 conditions, 65631 events. 25188/65631 cut-off events. For 7242/7242 co-relation queries the response was YES. Maximal size of possible extension queue 1720. Compared 826683 event pairs, 20277 based on Foata normal form. 14241/63634 useless extension candidates. Maximal degree in co-relation 103836. Up to 30610 conditions per place. [2022-11-16 11:31:05,952 INFO L137 encePairwiseOnDemand]: 393/413 looper letters, 56 selfloop transitions, 9 changer transitions 0/243 dead transitions. [2022-11-16 11:31:05,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 243 transitions, 655 flow [2022-11-16 11:31:05,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:31:05,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:31:05,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1011 transitions. [2022-11-16 11:31:05,960 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8159806295399515 [2022-11-16 11:31:05,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1011 transitions. [2022-11-16 11:31:05,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1011 transitions. [2022-11-16 11:31:05,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:31:05,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1011 transitions. [2022-11-16 11:31:05,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 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) [2022-11-16 11:31:05,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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) [2022-11-16 11:31:05,967 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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) [2022-11-16 11:31:05,967 INFO L175 Difference]: Start difference. First operand has 228 places, 236 transitions, 496 flow. Second operand 3 states and 1011 transitions. [2022-11-16 11:31:05,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 243 transitions, 655 flow [2022-11-16 11:31:05,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 243 transitions, 646 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-16 11:31:05,974 INFO L231 Difference]: Finished difference. Result has 224 places, 228 transitions, 527 flow [2022-11-16 11:31:05,975 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=527, PETRI_PLACES=224, PETRI_TRANSITIONS=228} [2022-11-16 11:31:05,976 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, -4 predicate places. [2022-11-16 11:31:05,976 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 228 transitions, 527 flow [2022-11-16 11:31:05,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 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) [2022-11-16 11:31:05,976 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:31:05,977 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:31:05,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:31:05,977 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 66 more)] === [2022-11-16 11:31:05,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:05,977 INFO L85 PathProgramCache]: Analyzing trace with hash -339923264, now seen corresponding path program 1 times [2022-11-16 11:31:05,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:31:05,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617276557] [2022-11-16 11:31:05,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:05,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:31:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:31:06,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:06,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:31:06,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617276557] [2022-11-16 11:31:06,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617276557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:31:06,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:31:06,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:31:06,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008946585] [2022-11-16 11:31:06,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:31:06,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:31:06,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:31:06,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:31:06,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:31:06,037 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 413 [2022-11-16 11:31:06,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 228 transitions, 527 flow. Second operand has 3 states, 3 states have (on average 367.3333333333333) internal successors, (1102), 3 states have internal predecessors, (1102), 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) [2022-11-16 11:31:06,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:31:06,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 413 [2022-11-16 11:31:06,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:31:08,680 INFO L130 PetriNetUnfolder]: 3770/21676 cut-off events. [2022-11-16 11:31:08,680 INFO L131 PetriNetUnfolder]: For 835/835 co-relation queries the response was YES. [2022-11-16 11:31:08,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27892 conditions, 21676 events. 3770/21676 cut-off events. For 835/835 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 303204 event pairs, 1034 based on Foata normal form. 0/17206 useless extension candidates. Maximal degree in co-relation 27860. Up to 2065 conditions per place. [2022-11-16 11:31:08,934 INFO L137 encePairwiseOnDemand]: 403/413 looper letters, 20 selfloop transitions, 7 changer transitions 0/239 dead transitions. [2022-11-16 11:31:08,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 239 transitions, 613 flow [2022-11-16 11:31:08,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:31:08,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:31:08,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1128 transitions. [2022-11-16 11:31:08,944 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.910411622276029 [2022-11-16 11:31:08,944 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1128 transitions. [2022-11-16 11:31:08,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1128 transitions. [2022-11-16 11:31:08,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:31:08,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1128 transitions. [2022-11-16 11:31:08,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 376.0) internal successors, (1128), 3 states have internal predecessors, (1128), 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) [2022-11-16 11:31:08,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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) [2022-11-16 11:31:08,960 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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) [2022-11-16 11:31:08,960 INFO L175 Difference]: Start difference. First operand has 224 places, 228 transitions, 527 flow. Second operand 3 states and 1128 transitions. [2022-11-16 11:31:08,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 239 transitions, 613 flow [2022-11-16 11:31:08,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 239 transitions, 595 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:31:08,976 INFO L231 Difference]: Finished difference. Result has 226 places, 235 transitions, 571 flow [2022-11-16 11:31:08,977 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=571, PETRI_PLACES=226, PETRI_TRANSITIONS=235} [2022-11-16 11:31:08,979 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, -2 predicate places. [2022-11-16 11:31:08,979 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 235 transitions, 571 flow [2022-11-16 11:31:08,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 367.3333333333333) internal successors, (1102), 3 states have internal predecessors, (1102), 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) [2022-11-16 11:31:08,980 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:31:08,980 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:31:08,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:31:08,981 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 66 more)] === [2022-11-16 11:31:08,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:08,981 INFO L85 PathProgramCache]: Analyzing trace with hash 893924755, now seen corresponding path program 1 times [2022-11-16 11:31:08,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:31:08,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679812102] [2022-11-16 11:31:08,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:08,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:31:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:31:09,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:09,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:31:09,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679812102] [2022-11-16 11:31:09,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679812102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:31:09,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:31:09,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:31:09,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641416179] [2022-11-16 11:31:09,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:31:09,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:31:09,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:31:09,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:31:09,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:31:09,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 413 [2022-11-16 11:31:09,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 235 transitions, 571 flow. Second operand has 3 states, 3 states have (on average 338.3333333333333) internal successors, (1015), 3 states have internal predecessors, (1015), 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) [2022-11-16 11:31:09,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:31:09,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 413 [2022-11-16 11:31:09,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand