./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 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_f3dd1592-ef3a-4aa9-807e-3db80135209a/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dd1592-ef3a-4aa9-807e-3db80135209a/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dd1592-ef3a-4aa9-807e-3db80135209a/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dd1592-ef3a-4aa9-807e-3db80135209a/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dd1592-ef3a-4aa9-807e-3db80135209a/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dd1592-ef3a-4aa9-807e-3db80135209a/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 21:05:01,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:05:01,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:05:01,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:05:01,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:05:01,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:05:01,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:05:01,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:05:01,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:05:01,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:05:01,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:05:01,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:05:01,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:05:01,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:05:01,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:05:01,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:05:01,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:05:01,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:05:01,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:05:01,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:05:01,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:05:01,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:05:01,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:05:01,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:05:01,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:05:01,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:05:01,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:05:01,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:05:01,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:05:01,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:05:01,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:05:01,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:05:01,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:05:01,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:05:01,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:05:01,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:05:01,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:05:01,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:05:01,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:05:01,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:05:01,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:05:01,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dd1592-ef3a-4aa9-807e-3db80135209a/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 21:05:01,211 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:05:01,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:05:01,211 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:05:01,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:05:01,212 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:05:01,212 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:05:01,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:05:01,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:05:01,213 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:05:01,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:05:01,213 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:05:01,214 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:05:01,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:05:01,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:05:01,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:05:01,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:05:01,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:05:01,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:05:01,221 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 21:05:01,221 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:05:01,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:05:01,221 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:05:01,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:05:01,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:05:01,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:05:01,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:05:01,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:05:01,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:05:01,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:05:01,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:05:01,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:05:01,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:05:01,223 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:05:01,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:05:01,223 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:05:01,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:05:01,223 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:05:01,224 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dd1592-ef3a-4aa9-807e-3db80135209a/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dd1592-ef3a-4aa9-807e-3db80135209a/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 [2022-12-13 21:05:01,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:05:01,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:05:01,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:05:01,415 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:05:01,415 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:05:01,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dd1592-ef3a-4aa9-807e-3db80135209a/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2022-12-13 21:05:03,957 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:05:04,157 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:05:04,158 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dd1592-ef3a-4aa9-807e-3db80135209a/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2022-12-13 21:05:04,169 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dd1592-ef3a-4aa9-807e-3db80135209a/bin/uautomizer-uyxdKDjOR8/data/1af7b0e0d/d5b52c7fb5804fc597ae04bd300eb139/FLAG8d32141c4 [2022-12-13 21:05:04,180 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dd1592-ef3a-4aa9-807e-3db80135209a/bin/uautomizer-uyxdKDjOR8/data/1af7b0e0d/d5b52c7fb5804fc597ae04bd300eb139 [2022-12-13 21:05:04,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:05:04,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:05:04,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:05:04,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:05:04,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:05:04,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:05:04" (1/1) ... [2022-12-13 21:05:04,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77eee7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:05:04, skipping insertion in model container [2022-12-13 21:05:04,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:05:04" (1/1) ... [2022-12-13 21:05:04,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:05:04,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:05:04,417 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dd1592-ef3a-4aa9-807e-3db80135209a/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i[30422,30435] [2022-12-13 21:05:04,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:05:04,428 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:05:04,452 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dd1592-ef3a-4aa9-807e-3db80135209a/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i[30422,30435] [2022-12-13 21:05:04,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:05:04,476 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:05:04,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:05:04 WrapperNode [2022-12-13 21:05:04,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:05:04,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:05:04,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:05:04,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:05:04,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:05:04" (1/1) ... [2022-12-13 21:05:04,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:05:04" (1/1) ... [2022-12-13 21:05:04,505 INFO L138 Inliner]: procedures = 170, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 71 [2022-12-13 21:05:04,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:05:04,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:05:04,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:05:04,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:05:04,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:05:04" (1/1) ... [2022-12-13 21:05:04,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:05:04" (1/1) ... [2022-12-13 21:05:04,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:05:04" (1/1) ... [2022-12-13 21:05:04,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:05:04" (1/1) ... [2022-12-13 21:05:04,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:05:04" (1/1) ... [2022-12-13 21:05:04,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:05:04" (1/1) ... [2022-12-13 21:05:04,531 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:05:04" (1/1) ... [2022-12-13 21:05:04,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:05:04" (1/1) ... [2022-12-13 21:05:04,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:05:04,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:05:04,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:05:04,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:05:04,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:05:04" (1/1) ... [2022-12-13 21:05:04,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:05:04,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dd1592-ef3a-4aa9-807e-3db80135209a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:05:04,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dd1592-ef3a-4aa9-807e-3db80135209a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:05:04,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dd1592-ef3a-4aa9-807e-3db80135209a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:05:04,591 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-13 21:05:04,591 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-13 21:05:04,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:05:04,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:05:04,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:05:04,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:05:04,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:05:04,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:05:04,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:05:04,593 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 21:05:04,672 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:05:04,674 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:05:04,793 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:05:04,855 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:05:04,855 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 21:05:04,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:05:04 BoogieIcfgContainer [2022-12-13 21:05:04,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:05:04,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:05:04,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:05:04,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:05:04,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:05:04" (1/3) ... [2022-12-13 21:05:04,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@373a5cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:05:04, skipping insertion in model container [2022-12-13 21:05:04,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:05:04" (2/3) ... [2022-12-13 21:05:04,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@373a5cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:05:04, skipping insertion in model container [2022-12-13 21:05:04,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:05:04" (3/3) ... [2022-12-13 21:05:04,865 INFO L112 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2022-12-13 21:05:04,874 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 21:05:04,884 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:05:04,884 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-13 21:05:04,884 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:05:04,914 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 21:05:04,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 59 transitions, 123 flow [2022-12-13 21:05:04,962 INFO L130 PetriNetUnfolder]: 6/70 cut-off events. [2022-12-13 21:05:04,962 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:05:04,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 70 events. 6/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 43. Up to 4 conditions per place. [2022-12-13 21:05:04,966 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 59 transitions, 123 flow [2022-12-13 21:05:04,968 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 59 transitions, 123 flow [2022-12-13 21:05:04,971 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:05:04,978 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 59 transitions, 123 flow [2022-12-13 21:05:04,981 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 59 transitions, 123 flow [2022-12-13 21:05:04,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 59 transitions, 123 flow [2022-12-13 21:05:04,992 INFO L130 PetriNetUnfolder]: 6/70 cut-off events. [2022-12-13 21:05:04,992 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:05:04,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 70 events. 6/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 43. Up to 4 conditions per place. [2022-12-13 21:05:04,993 INFO L119 LiptonReduction]: Number of co-enabled transitions 840 [2022-12-13 21:05:06,342 INFO L134 LiptonReduction]: Checked pairs total: 772 [2022-12-13 21:05:06,343 INFO L136 LiptonReduction]: Total number of compositions: 64 [2022-12-13 21:05:06,357 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:05:06,363 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;@535a676c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:05:06,363 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-12-13 21:05:06,365 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-12-13 21:05:06,365 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:05:06,366 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:05:06,366 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 21:05:06,367 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-12-13 21:05:06,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:05:06,371 INFO L85 PathProgramCache]: Analyzing trace with hash 10601383, now seen corresponding path program 1 times [2022-12-13 21:05:06,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:05:06,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934168218] [2022-12-13 21:05:06,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:05:06,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:05:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:05:06,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:05:06,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:05:06,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934168218] [2022-12-13 21:05:06,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934168218] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:05:06,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:05:06,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:05:06,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232587226] [2022-12-13 21:05:06,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:05:06,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:05:06,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:05:06,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:05:06,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:05:06,519 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 123 [2022-12-13 21:05:06,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 11 transitions, 27 flow. Second operand has 2 states, 2 states have (on average 50.0) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:06,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:05:06,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 123 [2022-12-13 21:05:06,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:05:06,537 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2022-12-13 21:05:06,538 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:05:06,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 11 events. 2/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 2 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 14. Up to 11 conditions per place. [2022-12-13 21:05:06,538 INFO L137 encePairwiseOnDemand]: 118/123 looper letters, 5 selfloop transitions, 0 changer transitions 0/6 dead transitions. [2022-12-13 21:05:06,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 27 flow [2022-12-13 21:05:06,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:05:06,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 21:05:06,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 106 transitions. [2022-12-13 21:05:06,548 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43089430894308944 [2022-12-13 21:05:06,548 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 106 transitions. [2022-12-13 21:05:06,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 106 transitions. [2022-12-13 21:05:06,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:05:06,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 106 transitions. [2022-12-13 21:05:06,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:06,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:06,556 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:06,557 INFO L175 Difference]: Start difference. First operand has 14 places, 11 transitions, 27 flow. Second operand 2 states and 106 transitions. [2022-12-13 21:05:06,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 27 flow [2022-12-13 21:05:06,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 27 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 21:05:06,560 INFO L231 Difference]: Finished difference. Result has 10 places, 6 transitions, 17 flow [2022-12-13 21:05:06,561 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=17, PETRI_PLACES=10, PETRI_TRANSITIONS=6} [2022-12-13 21:05:06,564 INFO L288 CegarLoopForPetriNet]: 14 programPoint places, -4 predicate places. [2022-12-13 21:05:06,564 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 6 transitions, 17 flow [2022-12-13 21:05:06,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 50.0) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:06,565 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:05:06,565 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 21:05:06,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:05:06,565 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-12-13 21:05:06,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:05:06,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1597965494, now seen corresponding path program 1 times [2022-12-13 21:05:06,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:05:06,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391848161] [2022-12-13 21:05:06,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:05:06,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:05:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:05:06,582 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:05:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:05:06,603 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:05:06,603 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 21:05:06,605 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-12-13 21:05:06,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2022-12-13 21:05:06,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2022-12-13 21:05:06,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2022-12-13 21:05:06,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2022-12-13 21:05:06,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2022-12-13 21:05:06,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2022-12-13 21:05:06,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2022-12-13 21:05:06,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2022-12-13 21:05:06,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:05:06,608 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 21:05:06,610 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 21:05:06,610 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 21:05:06,623 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 21:05:06,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 90 transitions, 192 flow [2022-12-13 21:05:06,640 INFO L130 PetriNetUnfolder]: 11/114 cut-off events. [2022-12-13 21:05:06,640 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 21:05:06,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 114 events. 11/114 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 206 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 73. Up to 6 conditions per place. [2022-12-13 21:05:06,641 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 90 transitions, 192 flow [2022-12-13 21:05:06,642 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 90 transitions, 192 flow [2022-12-13 21:05:06,642 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:05:06,642 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 90 transitions, 192 flow [2022-12-13 21:05:06,642 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 90 transitions, 192 flow [2022-12-13 21:05:06,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 90 transitions, 192 flow [2022-12-13 21:05:06,654 INFO L130 PetriNetUnfolder]: 11/114 cut-off events. [2022-12-13 21:05:06,654 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 21:05:06,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 114 events. 11/114 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 206 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 73. Up to 6 conditions per place. [2022-12-13 21:05:06,657 INFO L119 LiptonReduction]: Number of co-enabled transitions 3540 [2022-12-13 21:05:08,148 INFO L134 LiptonReduction]: Checked pairs total: 3304 [2022-12-13 21:05:08,148 INFO L136 LiptonReduction]: Total number of compositions: 95 [2022-12-13 21:05:08,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:05:08,151 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;@535a676c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:05:08,151 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-12-13 21:05:08,153 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2022-12-13 21:05:08,153 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:05:08,153 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:05:08,153 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 21:05:08,154 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-12-13 21:05:08,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:05:08,154 INFO L85 PathProgramCache]: Analyzing trace with hash 17331418, now seen corresponding path program 1 times [2022-12-13 21:05:08,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:05:08,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674073575] [2022-12-13 21:05:08,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:05:08,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:05:08,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:05:08,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:05:08,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:05:08,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674073575] [2022-12-13 21:05:08,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674073575] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:05:08,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:05:08,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:05:08,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908366113] [2022-12-13 21:05:08,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:05:08,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:05:08,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:05:08,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:05:08,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:05:08,186 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 185 [2022-12-13 21:05:08,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 52 flow. Second operand has 2 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:08,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:05:08,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 185 [2022-12-13 21:05:08,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:05:08,205 INFO L130 PetriNetUnfolder]: 20/57 cut-off events. [2022-12-13 21:05:08,205 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 21:05:08,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 57 events. 20/57 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 163 event pairs, 20 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 28. Up to 47 conditions per place. [2022-12-13 21:05:08,205 INFO L137 encePairwiseOnDemand]: 176/185 looper letters, 8 selfloop transitions, 0 changer transitions 0/11 dead transitions. [2022-12-13 21:05:08,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 11 transitions, 50 flow [2022-12-13 21:05:08,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:05:08,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 21:05:08,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 157 transitions. [2022-12-13 21:05:08,207 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2022-12-13 21:05:08,207 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 157 transitions. [2022-12-13 21:05:08,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 157 transitions. [2022-12-13 21:05:08,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:05:08,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 157 transitions. [2022-12-13 21:05:08,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:08,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:08,209 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:08,209 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 52 flow. Second operand 2 states and 157 transitions. [2022-12-13 21:05:08,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 11 transitions, 50 flow [2022-12-13 21:05:08,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 11 transitions, 48 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-13 21:05:08,210 INFO L231 Difference]: Finished difference. Result has 17 places, 11 transitions, 32 flow [2022-12-13 21:05:08,210 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=32, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2022-12-13 21:05:08,211 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, -8 predicate places. [2022-12-13 21:05:08,211 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 11 transitions, 32 flow [2022-12-13 21:05:08,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:08,211 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:05:08,211 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 21:05:08,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 21:05:08,212 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-12-13 21:05:08,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:05:08,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1141787543, now seen corresponding path program 1 times [2022-12-13 21:05:08,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:05:08,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22139198] [2022-12-13 21:05:08,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:05:08,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:05:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:05:08,224 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:05:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:05:08,234 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:05:08,234 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 21:05:08,234 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-12-13 21:05:08,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2022-12-13 21:05:08,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2022-12-13 21:05:08,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2022-12-13 21:05:08,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2022-12-13 21:05:08,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2022-12-13 21:05:08,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2022-12-13 21:05:08,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2022-12-13 21:05:08,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2022-12-13 21:05:08,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2022-12-13 21:05:08,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2022-12-13 21:05:08,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2022-12-13 21:05:08,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2022-12-13 21:05:08,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 21:05:08,236 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 21:05:08,237 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 21:05:08,237 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 21:05:08,255 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 21:05:08,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 121 transitions, 263 flow [2022-12-13 21:05:08,270 INFO L130 PetriNetUnfolder]: 16/158 cut-off events. [2022-12-13 21:05:08,270 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 21:05:08,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 158 events. 16/158 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 379 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 118. Up to 8 conditions per place. [2022-12-13 21:05:08,271 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 121 transitions, 263 flow [2022-12-13 21:05:08,272 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 121 transitions, 263 flow [2022-12-13 21:05:08,273 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:05:08,273 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 121 transitions, 263 flow [2022-12-13 21:05:08,273 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 121 transitions, 263 flow [2022-12-13 21:05:08,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 121 transitions, 263 flow [2022-12-13 21:05:08,285 INFO L130 PetriNetUnfolder]: 16/158 cut-off events. [2022-12-13 21:05:08,285 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 21:05:08,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 158 events. 16/158 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 379 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 118. Up to 8 conditions per place. [2022-12-13 21:05:08,288 INFO L119 LiptonReduction]: Number of co-enabled transitions 8100 [2022-12-13 21:05:10,885 INFO L134 LiptonReduction]: Checked pairs total: 8500 [2022-12-13 21:05:10,885 INFO L136 LiptonReduction]: Total number of compositions: 129 [2022-12-13 21:05:10,886 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:05:10,887 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;@535a676c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:05:10,887 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 21:05:10,888 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-12-13 21:05:10,888 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:05:10,889 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:05:10,889 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 21:05:10,889 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2022-12-13 21:05:10,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:05:10,889 INFO L85 PathProgramCache]: Analyzing trace with hash 25783620, now seen corresponding path program 1 times [2022-12-13 21:05:10,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:05:10,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008823649] [2022-12-13 21:05:10,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:05:10,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:05:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:05:10,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:05:10,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:05:10,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008823649] [2022-12-13 21:05:10,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008823649] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:05:10,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:05:10,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:05:10,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183638877] [2022-12-13 21:05:10,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:05:10,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:05:10,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:05:10,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:05:10,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:05:10,913 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 250 [2022-12-13 21:05:10,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 75 flow. Second operand has 2 states, 2 states have (on average 94.0) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:10,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:05:10,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 250 [2022-12-13 21:05:10,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:05:10,958 INFO L130 PetriNetUnfolder]: 110/225 cut-off events. [2022-12-13 21:05:10,958 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2022-12-13 21:05:10,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 225 events. 110/225 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 901 event pairs, 110 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 127. Up to 191 conditions per place. [2022-12-13 21:05:10,959 INFO L137 encePairwiseOnDemand]: 237/250 looper letters, 11 selfloop transitions, 0 changer transitions 0/14 dead transitions. [2022-12-13 21:05:10,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 14 transitions, 71 flow [2022-12-13 21:05:10,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:05:10,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 21:05:10,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 208 transitions. [2022-12-13 21:05:10,961 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.416 [2022-12-13 21:05:10,961 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 208 transitions. [2022-12-13 21:05:10,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 208 transitions. [2022-12-13 21:05:10,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:05:10,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 208 transitions. [2022-12-13 21:05:10,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 104.0) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:10,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:10,963 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:10,964 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 75 flow. Second operand 2 states and 208 transitions. [2022-12-13 21:05:10,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 14 transitions, 71 flow [2022-12-13 21:05:10,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 14 transitions, 65 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-12-13 21:05:10,964 INFO L231 Difference]: Finished difference. Result has 22 places, 14 transitions, 43 flow [2022-12-13 21:05:10,964 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=43, PETRI_PLACES=22, PETRI_TRANSITIONS=14} [2022-12-13 21:05:10,965 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -12 predicate places. [2022-12-13 21:05:10,965 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 14 transitions, 43 flow [2022-12-13 21:05:10,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 94.0) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:10,965 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:05:10,965 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 21:05:10,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 21:05:10,966 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2022-12-13 21:05:10,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:05:10,966 INFO L85 PathProgramCache]: Analyzing trace with hash -584053368, now seen corresponding path program 1 times [2022-12-13 21:05:10,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:05:10,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169614165] [2022-12-13 21:05:10,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:05:10,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:05:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:05:10,977 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:05:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:05:10,988 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:05:10,988 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 21:05:10,988 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-12-13 21:05:10,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-12-13 21:05:10,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-12-13 21:05:10,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-12-13 21:05:10,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-12-13 21:05:10,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-12-13 21:05:10,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-12-13 21:05:10,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-12-13 21:05:10,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-12-13 21:05:10,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-12-13 21:05:10,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-12-13 21:05:10,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-12-13 21:05:10,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-12-13 21:05:10,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-12-13 21:05:10,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-12-13 21:05:10,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-12-13 21:05:10,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-12-13 21:05:10,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 21:05:10,991 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 21:05:10,991 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 21:05:10,991 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 21:05:11,009 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 21:05:11,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 152 transitions, 336 flow [2022-12-13 21:05:11,028 INFO L130 PetriNetUnfolder]: 21/202 cut-off events. [2022-12-13 21:05:11,028 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 21:05:11,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 202 events. 21/202 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 533 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 166. Up to 10 conditions per place. [2022-12-13 21:05:11,029 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 152 transitions, 336 flow [2022-12-13 21:05:11,030 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 152 transitions, 336 flow [2022-12-13 21:05:11,031 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:05:11,031 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 152 transitions, 336 flow [2022-12-13 21:05:11,031 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 152 transitions, 336 flow [2022-12-13 21:05:11,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 152 transitions, 336 flow [2022-12-13 21:05:11,048 INFO L130 PetriNetUnfolder]: 21/202 cut-off events. [2022-12-13 21:05:11,048 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 21:05:11,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 202 events. 21/202 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 533 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 166. Up to 10 conditions per place. [2022-12-13 21:05:11,054 INFO L119 LiptonReduction]: Number of co-enabled transitions 14520 [2022-12-13 21:05:13,821 INFO L134 LiptonReduction]: Checked pairs total: 15789 [2022-12-13 21:05:13,821 INFO L136 LiptonReduction]: Total number of compositions: 176 [2022-12-13 21:05:13,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:05:13,824 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;@535a676c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:05:13,824 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-12-13 21:05:13,825 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-12-13 21:05:13,825 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:05:13,825 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:05:13,825 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 21:05:13,825 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-12-13 21:05:13,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:05:13,826 INFO L85 PathProgramCache]: Analyzing trace with hash 36832636, now seen corresponding path program 1 times [2022-12-13 21:05:13,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:05:13,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212556104] [2022-12-13 21:05:13,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:05:13,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:05:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:05:13,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:05:13,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:05:13,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212556104] [2022-12-13 21:05:13,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212556104] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:05:13,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:05:13,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:05:13,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721962645] [2022-12-13 21:05:13,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:05:13,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:05:13,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:05:13,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:05:13,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:05:13,840 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 328 [2022-12-13 21:05:13,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 100 flow. Second operand has 2 states, 2 states have (on average 116.0) internal successors, (232), 2 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:13,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:05:13,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 328 [2022-12-13 21:05:13,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:05:13,926 INFO L130 PetriNetUnfolder]: 488/837 cut-off events. [2022-12-13 21:05:13,926 INFO L131 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2022-12-13 21:05:13,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1863 conditions, 837 events. 488/837 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3914 event pairs, 488 based on Foata normal form. 0/796 useless extension candidates. Maximal degree in co-relation 511. Up to 731 conditions per place. [2022-12-13 21:05:13,929 INFO L137 encePairwiseOnDemand]: 311/328 looper letters, 14 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2022-12-13 21:05:13,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 17 transitions, 94 flow [2022-12-13 21:05:13,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:05:13,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 21:05:13,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 259 transitions. [2022-12-13 21:05:13,931 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3948170731707317 [2022-12-13 21:05:13,931 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 259 transitions. [2022-12-13 21:05:13,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 259 transitions. [2022-12-13 21:05:13,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:05:13,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 259 transitions. [2022-12-13 21:05:13,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 129.5) internal successors, (259), 2 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:13,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:13,933 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:13,934 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 100 flow. Second operand 2 states and 259 transitions. [2022-12-13 21:05:13,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 17 transitions, 94 flow [2022-12-13 21:05:13,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 17 transitions, 82 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-12-13 21:05:13,936 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 54 flow [2022-12-13 21:05:13,936 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2022-12-13 21:05:13,936 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -16 predicate places. [2022-12-13 21:05:13,936 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 54 flow [2022-12-13 21:05:13,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 116.0) internal successors, (232), 2 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:13,937 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:05:13,937 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-12-13 21:05:13,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 21:05:13,937 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-12-13 21:05:13,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:05:13,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1336448323, now seen corresponding path program 1 times [2022-12-13 21:05:13,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:05:13,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12865584] [2022-12-13 21:05:13,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:05:13,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:05:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:05:13,949 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:05:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:05:13,959 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:05:13,960 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 21:05:13,960 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-12-13 21:05:13,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2022-12-13 21:05:13,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2022-12-13 21:05:13,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2022-12-13 21:05:13,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2022-12-13 21:05:13,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2022-12-13 21:05:13,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2022-12-13 21:05:13,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2022-12-13 21:05:13,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2022-12-13 21:05:13,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2022-12-13 21:05:13,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2022-12-13 21:05:13,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2022-12-13 21:05:13,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2022-12-13 21:05:13,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2022-12-13 21:05:13,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2022-12-13 21:05:13,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2022-12-13 21:05:13,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2022-12-13 21:05:13,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2022-12-13 21:05:13,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2022-12-13 21:05:13,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2022-12-13 21:05:13,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2022-12-13 21:05:13,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 21:05:13,963 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 21:05:13,964 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 21:05:13,964 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-12-13 21:05:13,982 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 21:05:13,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 183 transitions, 411 flow [2022-12-13 21:05:14,005 INFO L130 PetriNetUnfolder]: 26/246 cut-off events. [2022-12-13 21:05:14,005 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-12-13 21:05:14,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 246 events. 26/246 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 699 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 215. Up to 12 conditions per place. [2022-12-13 21:05:14,006 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 183 transitions, 411 flow [2022-12-13 21:05:14,008 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 183 transitions, 411 flow [2022-12-13 21:05:14,008 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:05:14,008 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 183 transitions, 411 flow [2022-12-13 21:05:14,009 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 183 transitions, 411 flow [2022-12-13 21:05:14,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 183 transitions, 411 flow [2022-12-13 21:05:14,034 INFO L130 PetriNetUnfolder]: 26/246 cut-off events. [2022-12-13 21:05:14,034 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-12-13 21:05:14,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 246 events. 26/246 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 699 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 215. Up to 12 conditions per place. [2022-12-13 21:05:14,042 INFO L119 LiptonReduction]: Number of co-enabled transitions 22800 [2022-12-13 21:05:17,033 INFO L134 LiptonReduction]: Checked pairs total: 23180 [2022-12-13 21:05:17,033 INFO L136 LiptonReduction]: Total number of compositions: 197 [2022-12-13 21:05:17,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:05:17,035 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;@535a676c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:05:17,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-12-13 21:05:17,036 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-12-13 21:05:17,036 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:05:17,036 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:05:17,036 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 21:05:17,037 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-12-13 21:05:17,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:05:17,037 INFO L85 PathProgramCache]: Analyzing trace with hash 49359238, now seen corresponding path program 1 times [2022-12-13 21:05:17,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:05:17,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424401544] [2022-12-13 21:05:17,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:05:17,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:05:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:05:17,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:05:17,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:05:17,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424401544] [2022-12-13 21:05:17,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424401544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:05:17,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:05:17,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:05:17,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921150479] [2022-12-13 21:05:17,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:05:17,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:05:17,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:05:17,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:05:17,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:05:17,050 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 380 [2022-12-13 21:05:17,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 127 flow. Second operand has 2 states, 2 states have (on average 138.0) internal successors, (276), 2 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:17,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:05:17,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 380 [2022-12-13 21:05:17,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:05:17,368 INFO L130 PetriNetUnfolder]: 1946/2997 cut-off events. [2022-12-13 21:05:17,368 INFO L131 PetriNetUnfolder]: For 2176/2176 co-relation queries the response was YES. [2022-12-13 21:05:17,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6751 conditions, 2997 events. 1946/2997 cut-off events. For 2176/2176 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 15466 event pairs, 1946 based on Foata normal form. 0/2876 useless extension candidates. Maximal degree in co-relation 1924. Up to 2675 conditions per place. [2022-12-13 21:05:17,379 INFO L137 encePairwiseOnDemand]: 359/380 looper letters, 17 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2022-12-13 21:05:17,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 20 transitions, 119 flow [2022-12-13 21:05:17,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:05:17,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 21:05:17,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 310 transitions. [2022-12-13 21:05:17,381 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40789473684210525 [2022-12-13 21:05:17,381 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 310 transitions. [2022-12-13 21:05:17,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 310 transitions. [2022-12-13 21:05:17,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:05:17,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 310 transitions. [2022-12-13 21:05:17,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 155.0) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:17,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 380.0) internal successors, (1140), 3 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:17,385 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 380.0) internal successors, (1140), 3 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:17,385 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 127 flow. Second operand 2 states and 310 transitions. [2022-12-13 21:05:17,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 20 transitions, 119 flow [2022-12-13 21:05:17,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 20 transitions, 99 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-12-13 21:05:17,389 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 65 flow [2022-12-13 21:05:17,389 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=65, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2022-12-13 21:05:17,390 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -20 predicate places. [2022-12-13 21:05:17,390 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 65 flow [2022-12-13 21:05:17,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 138.0) internal successors, (276), 2 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:17,390 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:05:17,391 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:05:17,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 21:05:17,391 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-12-13 21:05:17,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:05:17,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1534789378, now seen corresponding path program 1 times [2022-12-13 21:05:17,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:05:17,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643070806] [2022-12-13 21:05:17,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:05:17,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:05:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:05:17,407 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:05:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:05:17,422 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:05:17,422 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 21:05:17,423 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-12-13 21:05:17,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2022-12-13 21:05:17,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2022-12-13 21:05:17,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2022-12-13 21:05:17,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2022-12-13 21:05:17,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2022-12-13 21:05:17,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2022-12-13 21:05:17,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2022-12-13 21:05:17,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2022-12-13 21:05:17,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2022-12-13 21:05:17,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2022-12-13 21:05:17,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2022-12-13 21:05:17,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2022-12-13 21:05:17,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2022-12-13 21:05:17,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2022-12-13 21:05:17,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2022-12-13 21:05:17,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2022-12-13 21:05:17,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2022-12-13 21:05:17,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2022-12-13 21:05:17,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2022-12-13 21:05:17,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2022-12-13 21:05:17,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2022-12-13 21:05:17,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2022-12-13 21:05:17,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2022-12-13 21:05:17,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2022-12-13 21:05:17,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 21:05:17,427 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 21:05:17,428 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 21:05:17,428 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-12-13 21:05:17,452 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 21:05:17,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 214 transitions, 488 flow [2022-12-13 21:05:17,483 INFO L130 PetriNetUnfolder]: 31/290 cut-off events. [2022-12-13 21:05:17,483 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-12-13 21:05:17,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 290 events. 31/290 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 836 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 265. Up to 14 conditions per place. [2022-12-13 21:05:17,485 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 214 transitions, 488 flow [2022-12-13 21:05:17,487 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 214 transitions, 488 flow [2022-12-13 21:05:17,487 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:05:17,487 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 214 transitions, 488 flow [2022-12-13 21:05:17,488 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 214 transitions, 488 flow [2022-12-13 21:05:17,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 214 transitions, 488 flow [2022-12-13 21:05:17,515 INFO L130 PetriNetUnfolder]: 31/290 cut-off events. [2022-12-13 21:05:17,515 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-12-13 21:05:17,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 290 events. 31/290 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 836 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 265. Up to 14 conditions per place. [2022-12-13 21:05:17,524 INFO L119 LiptonReduction]: Number of co-enabled transitions 32940 [2022-12-13 21:05:20,800 INFO L134 LiptonReduction]: Checked pairs total: 34860 [2022-12-13 21:05:20,800 INFO L136 LiptonReduction]: Total number of compositions: 243 [2022-12-13 21:05:20,801 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:05:20,801 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;@535a676c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:05:20,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-12-13 21:05:20,802 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-12-13 21:05:20,802 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:05:20,802 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:05:20,802 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 21:05:20,802 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-12-13 21:05:20,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:05:20,803 INFO L85 PathProgramCache]: Analyzing trace with hash 64406298, now seen corresponding path program 1 times [2022-12-13 21:05:20,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:05:20,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583858869] [2022-12-13 21:05:20,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:05:20,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:05:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:05:20,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:05:20,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:05:20,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583858869] [2022-12-13 21:05:20,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583858869] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:05:20,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:05:20,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:05:20,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997191788] [2022-12-13 21:05:20,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:05:20,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:05:20,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:05:20,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:05:20,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:05:20,813 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 457 [2022-12-13 21:05:20,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 156 flow. Second operand has 2 states, 2 states have (on average 160.0) internal successors, (320), 2 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:20,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:05:20,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 457 [2022-12-13 21:05:20,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:05:21,840 INFO L130 PetriNetUnfolder]: 7292/10449 cut-off events. [2022-12-13 21:05:21,840 INFO L131 PetriNetUnfolder]: For 9628/9628 co-relation queries the response was YES. [2022-12-13 21:05:21,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23762 conditions, 10449 events. 7292/10449 cut-off events. For 9628/9628 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 57375 event pairs, 7292 based on Foata normal form. 0/10085 useless extension candidates. Maximal degree in co-relation 6946. Up to 9479 conditions per place. [2022-12-13 21:05:21,882 INFO L137 encePairwiseOnDemand]: 432/457 looper letters, 20 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2022-12-13 21:05:21,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 23 transitions, 146 flow [2022-12-13 21:05:21,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:05:21,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 21:05:21,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 361 transitions. [2022-12-13 21:05:21,883 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3949671772428884 [2022-12-13 21:05:21,884 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 361 transitions. [2022-12-13 21:05:21,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 361 transitions. [2022-12-13 21:05:21,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:05:21,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 361 transitions. [2022-12-13 21:05:21,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 180.5) internal successors, (361), 2 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:21,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 457.0) internal successors, (1371), 3 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:21,886 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 457.0) internal successors, (1371), 3 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:21,886 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 156 flow. Second operand 2 states and 361 transitions. [2022-12-13 21:05:21,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 23 transitions, 146 flow [2022-12-13 21:05:21,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 23 transitions, 116 flow, removed 15 selfloop flow, removed 0 redundant places. [2022-12-13 21:05:21,891 INFO L231 Difference]: Finished difference. Result has 37 places, 23 transitions, 76 flow [2022-12-13 21:05:21,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=76, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2022-12-13 21:05:21,892 INFO L288 CegarLoopForPetriNet]: 61 programPoint places, -24 predicate places. [2022-12-13 21:05:21,892 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 76 flow [2022-12-13 21:05:21,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 160.0) internal successors, (320), 2 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:21,892 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:05:21,892 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:05:21,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 21:05:21,893 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-12-13 21:05:21,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:05:21,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1541289891, now seen corresponding path program 1 times [2022-12-13 21:05:21,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:05:21,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430338643] [2022-12-13 21:05:21,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:05:21,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:05:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:05:21,906 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:05:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:05:21,921 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:05:21,921 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 21:05:21,922 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2022-12-13 21:05:21,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2022-12-13 21:05:21,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2022-12-13 21:05:21,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2022-12-13 21:05:21,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2022-12-13 21:05:21,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2022-12-13 21:05:21,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2022-12-13 21:05:21,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2022-12-13 21:05:21,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2022-12-13 21:05:21,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2022-12-13 21:05:21,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2022-12-13 21:05:21,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2022-12-13 21:05:21,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2022-12-13 21:05:21,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2022-12-13 21:05:21,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2022-12-13 21:05:21,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2022-12-13 21:05:21,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2022-12-13 21:05:21,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2022-12-13 21:05:21,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2022-12-13 21:05:21,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2022-12-13 21:05:21,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2022-12-13 21:05:21,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2022-12-13 21:05:21,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2022-12-13 21:05:21,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2022-12-13 21:05:21,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2022-12-13 21:05:21,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2022-12-13 21:05:21,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2022-12-13 21:05:21,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2022-12-13 21:05:21,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2022-12-13 21:05:21,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 21:05:21,925 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 21:05:21,925 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 21:05:21,925 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2022-12-13 21:05:21,948 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 21:05:21,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 245 transitions, 567 flow [2022-12-13 21:05:21,998 INFO L130 PetriNetUnfolder]: 36/334 cut-off events. [2022-12-13 21:05:21,998 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-12-13 21:05:22,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 334 events. 36/334 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 999 event pairs, 0 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 318. Up to 16 conditions per place. [2022-12-13 21:05:22,001 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 245 transitions, 567 flow [2022-12-13 21:05:22,004 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 245 transitions, 567 flow [2022-12-13 21:05:22,004 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:05:22,004 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 231 places, 245 transitions, 567 flow [2022-12-13 21:05:22,004 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 231 places, 245 transitions, 567 flow [2022-12-13 21:05:22,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 245 transitions, 567 flow [2022-12-13 21:05:22,037 INFO L130 PetriNetUnfolder]: 36/334 cut-off events. [2022-12-13 21:05:22,037 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-12-13 21:05:22,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 334 events. 36/334 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 999 event pairs, 0 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 318. Up to 16 conditions per place. [2022-12-13 21:05:22,050 INFO L119 LiptonReduction]: Number of co-enabled transitions 44940 [2022-12-13 21:05:27,248 INFO L134 LiptonReduction]: Checked pairs total: 46114 [2022-12-13 21:05:27,248 INFO L136 LiptonReduction]: Total number of compositions: 285 [2022-12-13 21:05:27,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:05:27,250 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;@535a676c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:05:27,250 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-12-13 21:05:27,251 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-12-13 21:05:27,251 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:05:27,251 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:05:27,251 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 21:05:27,251 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-12-13 21:05:27,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:05:27,252 INFO L85 PathProgramCache]: Analyzing trace with hash 81068404, now seen corresponding path program 1 times [2022-12-13 21:05:27,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:05:27,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788345729] [2022-12-13 21:05:27,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:05:27,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:05:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:05:27,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:05:27,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:05:27,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788345729] [2022-12-13 21:05:27,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788345729] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:05:27,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:05:27,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:05:27,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065571004] [2022-12-13 21:05:27,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:05:27,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:05:27,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:05:27,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:05:27,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:05:27,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 530 [2022-12-13 21:05:27,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 187 flow. Second operand has 2 states, 2 states have (on average 182.0) internal successors, (364), 2 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:27,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:05:27,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 530 [2022-12-13 21:05:27,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:05:30,469 INFO L130 PetriNetUnfolder]: 26246/35721 cut-off events. [2022-12-13 21:05:30,470 INFO L131 PetriNetUnfolder]: For 40003/40003 co-relation queries the response was YES. [2022-12-13 21:05:30,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81840 conditions, 35721 events. 26246/35721 cut-off events. For 40003/40003 co-relation queries the response was YES. Maximal size of possible extension queue 1425. Compared 205643 event pairs, 26246 based on Foata normal form. 0/34628 useless extension candidates. Maximal degree in co-relation 24361. Up to 32807 conditions per place. [2022-12-13 21:05:30,616 INFO L137 encePairwiseOnDemand]: 501/530 looper letters, 23 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2022-12-13 21:05:30,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 26 transitions, 175 flow [2022-12-13 21:05:30,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:05:30,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 21:05:30,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 412 transitions. [2022-12-13 21:05:30,618 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3886792452830189 [2022-12-13 21:05:30,618 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 412 transitions. [2022-12-13 21:05:30,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 412 transitions. [2022-12-13 21:05:30,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:05:30,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 412 transitions. [2022-12-13 21:05:30,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 206.0) internal successors, (412), 2 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:30,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 530.0) internal successors, (1590), 3 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:30,620 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 530.0) internal successors, (1590), 3 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:30,620 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 187 flow. Second operand 2 states and 412 transitions. [2022-12-13 21:05:30,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 26 transitions, 175 flow [2022-12-13 21:05:30,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 26 transitions, 133 flow, removed 21 selfloop flow, removed 0 redundant places. [2022-12-13 21:05:30,681 INFO L231 Difference]: Finished difference. Result has 42 places, 26 transitions, 87 flow [2022-12-13 21:05:30,681 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=530, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=87, PETRI_PLACES=42, PETRI_TRANSITIONS=26} [2022-12-13 21:05:30,682 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -28 predicate places. [2022-12-13 21:05:30,682 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 26 transitions, 87 flow [2022-12-13 21:05:30,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 182.0) internal successors, (364), 2 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:30,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:05:30,682 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:05:30,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 21:05:30,682 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-12-13 21:05:30,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:05:30,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1055463978, now seen corresponding path program 1 times [2022-12-13 21:05:30,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:05:30,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458709919] [2022-12-13 21:05:30,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:05:30,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:05:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:05:30,695 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:05:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:05:30,706 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:05:30,706 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 21:05:30,706 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2022-12-13 21:05:30,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2022-12-13 21:05:30,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2022-12-13 21:05:30,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2022-12-13 21:05:30,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2022-12-13 21:05:30,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2022-12-13 21:05:30,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2022-12-13 21:05:30,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2022-12-13 21:05:30,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2022-12-13 21:05:30,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2022-12-13 21:05:30,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2022-12-13 21:05:30,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2022-12-13 21:05:30,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2022-12-13 21:05:30,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2022-12-13 21:05:30,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2022-12-13 21:05:30,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2022-12-13 21:05:30,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2022-12-13 21:05:30,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2022-12-13 21:05:30,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2022-12-13 21:05:30,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2022-12-13 21:05:30,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2022-12-13 21:05:30,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2022-12-13 21:05:30,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2022-12-13 21:05:30,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2022-12-13 21:05:30,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2022-12-13 21:05:30,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2022-12-13 21:05:30,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2022-12-13 21:05:30,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2022-12-13 21:05:30,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2022-12-13 21:05:30,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2022-12-13 21:05:30,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2022-12-13 21:05:30,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2022-12-13 21:05:30,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2022-12-13 21:05:30,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 21:05:30,709 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 21:05:30,710 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 21:05:30,710 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2022-12-13 21:05:30,759 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 21:05:30,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 276 transitions, 648 flow [2022-12-13 21:05:30,804 INFO L130 PetriNetUnfolder]: 41/378 cut-off events. [2022-12-13 21:05:30,804 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2022-12-13 21:05:30,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 378 events. 41/378 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1166 event pairs, 0 based on Foata normal form. 0/296 useless extension candidates. Maximal degree in co-relation 372. Up to 18 conditions per place. [2022-12-13 21:05:30,807 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 276 transitions, 648 flow [2022-12-13 21:05:30,810 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 276 transitions, 648 flow [2022-12-13 21:05:30,810 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:05:30,810 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 260 places, 276 transitions, 648 flow [2022-12-13 21:05:30,810 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 260 places, 276 transitions, 648 flow [2022-12-13 21:05:30,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 276 transitions, 648 flow [2022-12-13 21:05:30,853 INFO L130 PetriNetUnfolder]: 41/378 cut-off events. [2022-12-13 21:05:30,853 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2022-12-13 21:05:30,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 378 events. 41/378 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1166 event pairs, 0 based on Foata normal form. 0/296 useless extension candidates. Maximal degree in co-relation 372. Up to 18 conditions per place. [2022-12-13 21:05:30,868 INFO L119 LiptonReduction]: Number of co-enabled transitions 58800 [2022-12-13 21:05:35,852 INFO L134 LiptonReduction]: Checked pairs total: 63970 [2022-12-13 21:05:35,852 INFO L136 LiptonReduction]: Total number of compositions: 315 [2022-12-13 21:05:35,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:05:35,854 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;@535a676c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:05:35,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-12-13 21:05:35,855 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2022-12-13 21:05:35,855 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:05:35,855 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:05:35,855 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 21:05:35,856 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-12-13 21:05:35,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:05:35,856 INFO L85 PathProgramCache]: Analyzing trace with hash 99519352, now seen corresponding path program 1 times [2022-12-13 21:05:35,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:05:35,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259903296] [2022-12-13 21:05:35,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:05:35,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:05:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:05:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:05:35,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:05:35,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259903296] [2022-12-13 21:05:35,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259903296] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:05:35,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:05:35,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:05:35,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505578904] [2022-12-13 21:05:35,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:05:35,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:05:35,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:05:35,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:05:35,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:05:35,867 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 591 [2022-12-13 21:05:35,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 62 transitions, 220 flow. Second operand has 2 states, 2 states have (on average 204.0) internal successors, (408), 2 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:35,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:05:35,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 591 [2022-12-13 21:05:35,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:05:47,389 INFO L130 PetriNetUnfolder]: 91856/120285 cut-off events. [2022-12-13 21:05:47,389 INFO L131 PetriNetUnfolder]: For 158830/158830 co-relation queries the response was YES. [2022-12-13 21:05:47,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277213 conditions, 120285 events. 91856/120285 cut-off events. For 158830/158830 co-relation queries the response was YES. Maximal size of possible extension queue 4108. Compared 716802 event pairs, 91856 based on Foata normal form. 0/117004 useless extension candidates. Maximal degree in co-relation 83653. Up to 111539 conditions per place. [2022-12-13 21:05:47,916 INFO L137 encePairwiseOnDemand]: 558/591 looper letters, 26 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2022-12-13 21:05:47,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 29 transitions, 206 flow [2022-12-13 21:05:47,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:05:47,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 21:05:47,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 463 transitions. [2022-12-13 21:05:47,919 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3917089678510998 [2022-12-13 21:05:47,920 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 463 transitions. [2022-12-13 21:05:47,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 463 transitions. [2022-12-13 21:05:47,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:05:47,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 463 transitions. [2022-12-13 21:05:47,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 231.5) internal successors, (463), 2 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:47,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 591.0) internal successors, (1773), 3 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:47,924 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 591.0) internal successors, (1773), 3 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:47,924 INFO L175 Difference]: Start difference. First operand has 79 places, 62 transitions, 220 flow. Second operand 2 states and 463 transitions. [2022-12-13 21:05:47,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 29 transitions, 206 flow [2022-12-13 21:05:48,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 29 transitions, 150 flow, removed 28 selfloop flow, removed 0 redundant places. [2022-12-13 21:05:48,082 INFO L231 Difference]: Finished difference. Result has 47 places, 29 transitions, 98 flow [2022-12-13 21:05:48,082 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=591, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=98, PETRI_PLACES=47, PETRI_TRANSITIONS=29} [2022-12-13 21:05:48,083 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -32 predicate places. [2022-12-13 21:05:48,083 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 29 transitions, 98 flow [2022-12-13 21:05:48,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 204.0) internal successors, (408), 2 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:48,083 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:05:48,083 INFO L209 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:05:48,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 21:05:48,083 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-12-13 21:05:48,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:05:48,084 INFO L85 PathProgramCache]: Analyzing trace with hash -8239408, now seen corresponding path program 1 times [2022-12-13 21:05:48,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:05:48,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610233655] [2022-12-13 21:05:48,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:05:48,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:05:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:05:48,095 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:05:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:05:48,105 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:05:48,106 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 21:05:48,106 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2022-12-13 21:05:48,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (35 of 37 remaining) [2022-12-13 21:05:48,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (34 of 37 remaining) [2022-12-13 21:05:48,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (33 of 37 remaining) [2022-12-13 21:05:48,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 37 remaining) [2022-12-13 21:05:48,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 37 remaining) [2022-12-13 21:05:48,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 37 remaining) [2022-12-13 21:05:48,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 37 remaining) [2022-12-13 21:05:48,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (28 of 37 remaining) [2022-12-13 21:05:48,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 37 remaining) [2022-12-13 21:05:48,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 37 remaining) [2022-12-13 21:05:48,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 37 remaining) [2022-12-13 21:05:48,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 37 remaining) [2022-12-13 21:05:48,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 37 remaining) [2022-12-13 21:05:48,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 37 remaining) [2022-12-13 21:05:48,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 37 remaining) [2022-12-13 21:05:48,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 37 remaining) [2022-12-13 21:05:48,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 37 remaining) [2022-12-13 21:05:48,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 37 remaining) [2022-12-13 21:05:48,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 37 remaining) [2022-12-13 21:05:48,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 37 remaining) [2022-12-13 21:05:48,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 37 remaining) [2022-12-13 21:05:48,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 37 remaining) [2022-12-13 21:05:48,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 37 remaining) [2022-12-13 21:05:48,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 37 remaining) [2022-12-13 21:05:48,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 37 remaining) [2022-12-13 21:05:48,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 37 remaining) [2022-12-13 21:05:48,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 37 remaining) [2022-12-13 21:05:48,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 37 remaining) [2022-12-13 21:05:48,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 37 remaining) [2022-12-13 21:05:48,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 37 remaining) [2022-12-13 21:05:48,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 37 remaining) [2022-12-13 21:05:48,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 37 remaining) [2022-12-13 21:05:48,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 37 remaining) [2022-12-13 21:05:48,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 37 remaining) [2022-12-13 21:05:48,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 37 remaining) [2022-12-13 21:05:48,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 37 remaining) [2022-12-13 21:05:48,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 21:05:48,111 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 21:05:48,111 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 21:05:48,111 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2022-12-13 21:05:48,140 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 21:05:48,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 307 transitions, 731 flow [2022-12-13 21:05:48,205 INFO L130 PetriNetUnfolder]: 46/422 cut-off events. [2022-12-13 21:05:48,205 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2022-12-13 21:05:48,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 422 events. 46/422 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1313 event pairs, 0 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 427. Up to 20 conditions per place. [2022-12-13 21:05:48,209 INFO L82 GeneralOperation]: Start removeDead. Operand has 289 places, 307 transitions, 731 flow [2022-12-13 21:05:48,212 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 289 places, 307 transitions, 731 flow [2022-12-13 21:05:48,212 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:05:48,212 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 289 places, 307 transitions, 731 flow [2022-12-13 21:05:48,212 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 289 places, 307 transitions, 731 flow [2022-12-13 21:05:48,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 307 transitions, 731 flow [2022-12-13 21:05:48,262 INFO L130 PetriNetUnfolder]: 46/422 cut-off events. [2022-12-13 21:05:48,263 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2022-12-13 21:05:48,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 422 events. 46/422 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1313 event pairs, 0 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 427. Up to 20 conditions per place. [2022-12-13 21:05:48,281 INFO L119 LiptonReduction]: Number of co-enabled transitions 74520 [2022-12-13 21:05:54,687 INFO L134 LiptonReduction]: Checked pairs total: 79401 [2022-12-13 21:05:54,687 INFO L136 LiptonReduction]: Total number of compositions: 354 [2022-12-13 21:05:54,689 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:05:54,689 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;@535a676c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:05:54,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-12-13 21:05:54,691 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-12-13 21:05:54,691 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:05:54,691 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:05:54,691 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 21:05:54,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-12-13 21:05:54,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:05:54,692 INFO L85 PathProgramCache]: Analyzing trace with hash 120749481, now seen corresponding path program 1 times [2022-12-13 21:05:54,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:05:54,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034614568] [2022-12-13 21:05:54,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:05:54,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:05:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:05:54,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:05:54,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:05:54,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034614568] [2022-12-13 21:05:54,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034614568] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:05:54,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:05:54,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:05:54,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102373924] [2022-12-13 21:05:54,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:05:54,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:05:54,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:05:54,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:05:54,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:05:54,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 661 [2022-12-13 21:05:54,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 69 transitions, 255 flow. Second operand has 2 states, 2 states have (on average 226.0) internal successors, (452), 2 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) [2022-12-13 21:05:54,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:05:54,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 661 [2022-12-13 21:05:54,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:06:32,417 INFO L130 PetriNetUnfolder]: 314930/400221 cut-off events. [2022-12-13 21:06:32,417 INFO L131 PetriNetUnfolder]: For 609352/609352 co-relation queries the response was YES. [2022-12-13 21:06:33,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926753 conditions, 400221 events. 314930/400221 cut-off events. For 609352/609352 co-relation queries the response was YES. Maximal size of possible extension queue 11911. Compared 2455688 event pairs, 314930 based on Foata normal form. 0/390380 useless extension candidates. Maximal degree in co-relation 282670. Up to 373979 conditions per place. [2022-12-13 21:06:34,441 INFO L137 encePairwiseOnDemand]: 624/661 looper letters, 29 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2022-12-13 21:06:34,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 32 transitions, 239 flow [2022-12-13 21:06:34,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:06:34,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 21:06:34,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 514 transitions. [2022-12-13 21:06:34,444 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3888048411497731 [2022-12-13 21:06:34,444 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 514 transitions. [2022-12-13 21:06:34,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 514 transitions. [2022-12-13 21:06:34,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:06:34,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 514 transitions. [2022-12-13 21:06:34,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 257.0) internal successors, (514), 2 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:06:34,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 661.0) internal successors, (1983), 3 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:06:34,448 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 661.0) internal successors, (1983), 3 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:06:34,448 INFO L175 Difference]: Start difference. First operand has 88 places, 69 transitions, 255 flow. Second operand 2 states and 514 transitions. [2022-12-13 21:06:34,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 32 transitions, 239 flow [2022-12-13 21:06:35,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 32 transitions, 167 flow, removed 36 selfloop flow, removed 0 redundant places. [2022-12-13 21:06:35,078 INFO L231 Difference]: Finished difference. Result has 52 places, 32 transitions, 109 flow [2022-12-13 21:06:35,078 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=109, PETRI_PLACES=52, PETRI_TRANSITIONS=32} [2022-12-13 21:06:35,079 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, -36 predicate places. [2022-12-13 21:06:35,079 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 32 transitions, 109 flow [2022-12-13 21:06:35,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 226.0) internal successors, (452), 2 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) [2022-12-13 21:06:35,079 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:06:35,080 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:06:35,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 21:06:35,080 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-12-13 21:06:35,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:06:35,080 INFO L85 PathProgramCache]: Analyzing trace with hash -156211122, now seen corresponding path program 1 times [2022-12-13 21:06:35,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:06:35,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237556177] [2022-12-13 21:06:35,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:06:35,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:06:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:06:35,096 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:06:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:06:35,107 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:06:35,107 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 21:06:35,107 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2022-12-13 21:06:35,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (39 of 41 remaining) [2022-12-13 21:06:35,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (38 of 41 remaining) [2022-12-13 21:06:35,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (37 of 41 remaining) [2022-12-13 21:06:35,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (36 of 41 remaining) [2022-12-13 21:06:35,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (35 of 41 remaining) [2022-12-13 21:06:35,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (34 of 41 remaining) [2022-12-13 21:06:35,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (33 of 41 remaining) [2022-12-13 21:06:35,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 41 remaining) [2022-12-13 21:06:35,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 41 remaining) [2022-12-13 21:06:35,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 41 remaining) [2022-12-13 21:06:35,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 41 remaining) [2022-12-13 21:06:35,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (28 of 41 remaining) [2022-12-13 21:06:35,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 41 remaining) [2022-12-13 21:06:35,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 41 remaining) [2022-12-13 21:06:35,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 41 remaining) [2022-12-13 21:06:35,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 41 remaining) [2022-12-13 21:06:35,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 41 remaining) [2022-12-13 21:06:35,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 41 remaining) [2022-12-13 21:06:35,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 41 remaining) [2022-12-13 21:06:35,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 41 remaining) [2022-12-13 21:06:35,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 41 remaining) [2022-12-13 21:06:35,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 41 remaining) [2022-12-13 21:06:35,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 41 remaining) [2022-12-13 21:06:35,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 41 remaining) [2022-12-13 21:06:35,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 41 remaining) [2022-12-13 21:06:35,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 41 remaining) [2022-12-13 21:06:35,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 41 remaining) [2022-12-13 21:06:35,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 41 remaining) [2022-12-13 21:06:35,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 41 remaining) [2022-12-13 21:06:35,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 41 remaining) [2022-12-13 21:06:35,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 41 remaining) [2022-12-13 21:06:35,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 41 remaining) [2022-12-13 21:06:35,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 41 remaining) [2022-12-13 21:06:35,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 41 remaining) [2022-12-13 21:06:35,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 41 remaining) [2022-12-13 21:06:35,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 41 remaining) [2022-12-13 21:06:35,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 41 remaining) [2022-12-13 21:06:35,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 41 remaining) [2022-12-13 21:06:35,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 41 remaining) [2022-12-13 21:06:35,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 41 remaining) [2022-12-13 21:06:35,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 21:06:35,112 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 21:06:35,113 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 21:06:35,113 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2022-12-13 21:06:35,143 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 21:06:35,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 338 transitions, 816 flow [2022-12-13 21:06:35,308 INFO L130 PetriNetUnfolder]: 51/466 cut-off events. [2022-12-13 21:06:35,308 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2022-12-13 21:06:35,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 466 events. 51/466 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1476 event pairs, 0 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 483. Up to 22 conditions per place. [2022-12-13 21:06:35,313 INFO L82 GeneralOperation]: Start removeDead. Operand has 318 places, 338 transitions, 816 flow [2022-12-13 21:06:35,316 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 338 transitions, 816 flow [2022-12-13 21:06:35,317 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:06:35,317 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 318 places, 338 transitions, 816 flow [2022-12-13 21:06:35,317 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 318 places, 338 transitions, 816 flow [2022-12-13 21:06:35,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 338 transitions, 816 flow [2022-12-13 21:06:35,379 INFO L130 PetriNetUnfolder]: 51/466 cut-off events. [2022-12-13 21:06:35,379 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2022-12-13 21:06:35,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 466 events. 51/466 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1476 event pairs, 0 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 483. Up to 22 conditions per place. [2022-12-13 21:06:35,403 INFO L119 LiptonReduction]: Number of co-enabled transitions 92100 [2022-12-13 21:06:41,670 INFO L134 LiptonReduction]: Checked pairs total: 97372 [2022-12-13 21:06:41,670 INFO L136 LiptonReduction]: Total number of compositions: 387 [2022-12-13 21:06:41,671 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:06:41,671 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;@535a676c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:06:41,671 INFO L358 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2022-12-13 21:06:41,672 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-12-13 21:06:41,672 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:06:41,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:06:41,672 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 21:06:41,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2022-12-13 21:06:41,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:06:41,672 INFO L85 PathProgramCache]: Analyzing trace with hash 143987487, now seen corresponding path program 1 times [2022-12-13 21:06:41,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:06:41,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528753487] [2022-12-13 21:06:41,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:06:41,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:06:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:06:41,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:06:41,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:06:41,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528753487] [2022-12-13 21:06:41,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528753487] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:06:41,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:06:41,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:06:41,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200497294] [2022-12-13 21:06:41,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:06:41,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:06:41,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:06:41,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:06:41,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:06:41,682 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 725 [2022-12-13 21:06:41,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 76 transitions, 292 flow. Second operand has 2 states, 2 states have (on average 248.0) internal successors, (496), 2 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:06:41,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:06:41,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 725 [2022-12-13 21:06:41,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand