./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a 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_ddfe1e1f-6906-4168-ad5d-58c4859869b9/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfe1e1f-6906-4168-ad5d-58c4859869b9/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfe1e1f-6906-4168-ad5d-58c4859869b9/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfe1e1f-6906-4168-ad5d-58c4859869b9/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfe1e1f-6906-4168-ad5d-58c4859869b9/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfe1e1f-6906-4168-ad5d-58c4859869b9/bin/uautomizer-ZsLfNo2U6R --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 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 --- 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-38b53e6 [2022-11-25 18:28:17,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:28:17,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:28:17,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:28:17,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:28:17,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:28:17,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:28:17,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:28:17,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:28:17,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:28:17,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:28:17,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:28:17,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:28:17,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:28:17,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:28:17,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:28:17,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:28:17,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:28:17,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:28:17,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:28:17,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:28:17,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:28:17,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:28:17,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:28:17,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:28:17,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:28:17,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:28:17,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:28:17,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:28:17,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:28:17,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:28:17,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:28:17,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:28:17,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:28:17,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:28:17,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:28:17,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:28:17,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:28:17,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:28:17,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:28:17,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:28:17,216 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfe1e1f-6906-4168-ad5d-58c4859869b9/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-25 18:28:17,268 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:28:17,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:28:17,269 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:28:17,270 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:28:17,271 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:28:17,271 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:28:17,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:28:17,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:28:17,273 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:28:17,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:28:17,274 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:28:17,274 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:28:17,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:28:17,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:28:17,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:28:17,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:28:17,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:28:17,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:28:17,276 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 18:28:17,276 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:28:17,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:28:17,277 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:28:17,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:28:17,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:28:17,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:28:17,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:28:17,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:28:17,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:28:17,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:28:17,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:28:17,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:28:17,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:28:17,280 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:28:17,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:28:17,280 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:28:17,281 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:28:17,281 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_ddfe1e1f-6906-4168-ad5d-58c4859869b9/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfe1e1f-6906-4168-ad5d-58c4859869b9/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 [2022-11-25 18:28:17,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:28:17,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:28:17,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:28:17,627 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:28:17,627 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:28:17,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfe1e1f-6906-4168-ad5d-58c4859869b9/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2022-11-25 18:28:21,109 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:28:21,442 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:28:21,443 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfe1e1f-6906-4168-ad5d-58c4859869b9/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2022-11-25 18:28:21,462 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfe1e1f-6906-4168-ad5d-58c4859869b9/bin/uautomizer-ZsLfNo2U6R/data/9cb07c27f/e5ef7f0f394242ce8962111378682d74/FLAGbe4dc9070 [2022-11-25 18:28:21,478 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfe1e1f-6906-4168-ad5d-58c4859869b9/bin/uautomizer-ZsLfNo2U6R/data/9cb07c27f/e5ef7f0f394242ce8962111378682d74 [2022-11-25 18:28:21,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:28:21,483 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:28:21,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:28:21,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:28:21,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:28:21,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:28:21" (1/1) ... [2022-11-25 18:28:21,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c09debe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:21, skipping insertion in model container [2022-11-25 18:28:21,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:28:21" (1/1) ... [2022-11-25 18:28:21,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:28:21,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:28:21,926 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_ddfe1e1f-6906-4168-ad5d-58c4859869b9/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2022-11-25 18:28:21,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:28:21,996 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:28:22,061 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_ddfe1e1f-6906-4168-ad5d-58c4859869b9/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2022-11-25 18:28:22,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:28:22,150 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:28:22,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:22 WrapperNode [2022-11-25 18:28:22,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:28:22,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:28:22,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:28:22,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:28:22,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:22" (1/1) ... [2022-11-25 18:28:22,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:22" (1/1) ... [2022-11-25 18:28:22,232 INFO L138 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 115 [2022-11-25 18:28:22,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:28:22,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:28:22,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:28:22,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:28:22,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:22" (1/1) ... [2022-11-25 18:28:22,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:22" (1/1) ... [2022-11-25 18:28:22,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:22" (1/1) ... [2022-11-25 18:28:22,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:22" (1/1) ... [2022-11-25 18:28:22,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:22" (1/1) ... [2022-11-25 18:28:22,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:22" (1/1) ... [2022-11-25 18:28:22,294 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:22" (1/1) ... [2022-11-25 18:28:22,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:22" (1/1) ... [2022-11-25 18:28:22,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:28:22,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:28:22,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:28:22,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:28:22,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:22" (1/1) ... [2022-11-25 18:28:22,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:28:22,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfe1e1f-6906-4168-ad5d-58c4859869b9/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:28:22,346 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfe1e1f-6906-4168-ad5d-58c4859869b9/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:28:22,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddfe1e1f-6906-4168-ad5d-58c4859869b9/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:28:22,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:28:22,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:28:22,396 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 18:28:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:28:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:28:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 18:28:22,397 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 18:28:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:28:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:28:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:28:22,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:28:22,401 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:28:22,543 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:28:22,546 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:28:22,989 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:28:22,999 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:28:23,000 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-25 18:28:23,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:28:23 BoogieIcfgContainer [2022-11-25 18:28:23,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:28:23,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:28:23,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:28:23,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:28:23,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:28:21" (1/3) ... [2022-11-25 18:28:23,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59974210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:28:23, skipping insertion in model container [2022-11-25 18:28:23,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:28:22" (2/3) ... [2022-11-25 18:28:23,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59974210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:28:23, skipping insertion in model container [2022-11-25 18:28:23,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:28:23" (3/3) ... [2022-11-25 18:28:23,014 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2022-11-25 18:28:23,025 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 18:28:23,039 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:28:23,039 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-25 18:28:23,040 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:28:23,135 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-25 18:28:23,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 173 transitions, 354 flow [2022-11-25 18:28:23,313 INFO L130 PetriNetUnfolder]: 30/255 cut-off events. [2022-11-25 18:28:23,314 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:28:23,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 255 events. 30/255 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1024 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 137. Up to 6 conditions per place. [2022-11-25 18:28:23,327 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 173 transitions, 354 flow [2022-11-25 18:28:23,335 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 173 transitions, 354 flow [2022-11-25 18:28:23,340 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:28:23,359 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 173 transitions, 354 flow [2022-11-25 18:28:23,362 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 173 transitions, 354 flow [2022-11-25 18:28:23,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 173 transitions, 354 flow [2022-11-25 18:28:23,433 INFO L130 PetriNetUnfolder]: 30/255 cut-off events. [2022-11-25 18:28:23,434 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:28:23,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 255 events. 30/255 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1024 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 137. Up to 6 conditions per place. [2022-11-25 18:28:23,442 INFO L119 LiptonReduction]: Number of co-enabled transitions 8800 [2022-11-25 18:28:28,125 INFO L134 LiptonReduction]: Checked pairs total: 48009 [2022-11-25 18:28:28,126 INFO L136 LiptonReduction]: Total number of compositions: 143 [2022-11-25 18:28:28,151 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:28:28,165 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;@115c049, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:28:28,166 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-25 18:28:28,172 INFO L130 PetriNetUnfolder]: 5/23 cut-off events. [2022-11-25 18:28:28,172 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:28:28,173 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:28:28,173 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:28:28,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-25 18:28:28,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:28,180 INFO L85 PathProgramCache]: Analyzing trace with hash 600977559, now seen corresponding path program 1 times [2022-11-25 18:28:28,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:28,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467170310] [2022-11-25 18:28:28,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:28,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:28,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:28:28,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:28,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467170310] [2022-11-25 18:28:28,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467170310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:28:28,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:28:28,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:28:28,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290921267] [2022-11-25 18:28:28,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:28:28,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:28:28,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:28,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:28:28,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:28:28,541 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 316 [2022-11-25 18:28:28,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 84 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:28,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:28:28,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 316 [2022-11-25 18:28:28,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:28:28,810 INFO L130 PetriNetUnfolder]: 217/673 cut-off events. [2022-11-25 18:28:28,810 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:28:28,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 673 events. 217/673 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3750 event pairs, 0 based on Foata normal form. 65/665 useless extension candidates. Maximal degree in co-relation 1098. Up to 437 conditions per place. [2022-11-25 18:28:28,823 INFO L137 encePairwiseOnDemand]: 298/316 looper letters, 43 selfloop transitions, 2 changer transitions 2/82 dead transitions. [2022-11-25 18:28:28,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 82 transitions, 266 flow [2022-11-25 18:28:28,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:28:28,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:28:28,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2022-11-25 18:28:28,851 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5443037974683544 [2022-11-25 18:28:28,852 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2022-11-25 18:28:28,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2022-11-25 18:28:28,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:28:28,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2022-11-25 18:28:28,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:28,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:28,889 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:28,891 INFO L175 Difference]: Start difference. First operand has 71 places, 84 transitions, 176 flow. Second operand 3 states and 516 transitions. [2022-11-25 18:28:28,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 82 transitions, 266 flow [2022-11-25 18:28:28,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 82 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:28:28,902 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 147 flow [2022-11-25 18:28:28,905 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2022-11-25 18:28:28,910 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 2 predicate places. [2022-11-25 18:28:28,911 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 147 flow [2022-11-25 18:28:28,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:28,912 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:28:28,912 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 18:28:28,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:28:28,913 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-25 18:28:28,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:28,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1470443218, now seen corresponding path program 1 times [2022-11-25 18:28:28,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:28,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224382706] [2022-11-25 18:28:28,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:28,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:29,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:28:29,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:29,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224382706] [2022-11-25 18:28:29,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224382706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:28:29,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:28:29,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:28:29,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112817360] [2022-11-25 18:28:29,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:28:29,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:28:29,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:29,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:28:29,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:28:29,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 316 [2022-11-25 18:28:29,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:29,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:28:29,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 316 [2022-11-25 18:28:29,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:28:29,452 INFO L130 PetriNetUnfolder]: 578/1483 cut-off events. [2022-11-25 18:28:29,453 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-11-25 18:28:29,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2794 conditions, 1483 events. 578/1483 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 8577 event pairs, 214 based on Foata normal form. 0/1385 useless extension candidates. Maximal degree in co-relation 2776. Up to 706 conditions per place. [2022-11-25 18:28:29,462 INFO L137 encePairwiseOnDemand]: 294/316 looper letters, 72 selfloop transitions, 16 changer transitions 0/107 dead transitions. [2022-11-25 18:28:29,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 107 transitions, 408 flow [2022-11-25 18:28:29,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:28:29,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:28:29,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2022-11-25 18:28:29,465 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5137130801687764 [2022-11-25 18:28:29,466 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2022-11-25 18:28:29,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2022-11-25 18:28:29,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:28:29,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2022-11-25 18:28:29,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:29,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:29,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:29,473 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 147 flow. Second operand 3 states and 487 transitions. [2022-11-25 18:28:29,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 107 transitions, 408 flow [2022-11-25 18:28:29,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 107 transitions, 402 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:28:29,477 INFO L231 Difference]: Finished difference. Result has 74 places, 83 transitions, 283 flow [2022-11-25 18:28:29,477 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=283, PETRI_PLACES=74, PETRI_TRANSITIONS=83} [2022-11-25 18:28:29,478 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 3 predicate places. [2022-11-25 18:28:29,478 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 83 transitions, 283 flow [2022-11-25 18:28:29,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:29,479 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:28:29,479 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-11-25 18:28:29,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:28:29,480 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-25 18:28:29,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:29,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1470490787, now seen corresponding path program 1 times [2022-11-25 18:28:29,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:29,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425602595] [2022-11-25 18:28:29,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:29,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:28:29,510 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:28:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:28:29,548 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:28:29,549 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:28:29,550 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-25 18:28:29,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-11-25 18:28:29,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-11-25 18:28:29,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-11-25 18:28:29,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-11-25 18:28:29,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-11-25 18:28:29,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-11-25 18:28:29,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-11-25 18:28:29,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-11-25 18:28:29,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-11-25 18:28:29,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-11-25 18:28:29,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-11-25 18:28:29,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-11-25 18:28:29,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-11-25 18:28:29,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-11-25 18:28:29,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-11-25 18:28:29,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-11-25 18:28:29,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:28:29,559 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-25 18:28:29,562 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 18:28:29,562 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 18:28:29,590 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 18:28:29,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 225 transitions, 468 flow [2022-11-25 18:28:29,669 INFO L130 PetriNetUnfolder]: 51/420 cut-off events. [2022-11-25 18:28:29,670 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 18:28:29,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 420 events. 51/420 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1889 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 257. Up to 9 conditions per place. [2022-11-25 18:28:29,674 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 225 transitions, 468 flow [2022-11-25 18:28:29,679 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 225 transitions, 468 flow [2022-11-25 18:28:29,680 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:28:29,680 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 225 transitions, 468 flow [2022-11-25 18:28:29,680 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 225 transitions, 468 flow [2022-11-25 18:28:29,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 225 transitions, 468 flow [2022-11-25 18:28:29,769 INFO L130 PetriNetUnfolder]: 51/420 cut-off events. [2022-11-25 18:28:29,770 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 18:28:29,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 420 events. 51/420 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1889 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 257. Up to 9 conditions per place. [2022-11-25 18:28:29,791 INFO L119 LiptonReduction]: Number of co-enabled transitions 23700 [2022-11-25 18:28:35,673 INFO L134 LiptonReduction]: Checked pairs total: 141803 [2022-11-25 18:28:35,673 INFO L136 LiptonReduction]: Total number of compositions: 175 [2022-11-25 18:28:35,679 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:28:35,685 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;@115c049, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:28:35,686 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-25 18:28:35,690 INFO L130 PetriNetUnfolder]: 5/21 cut-off events. [2022-11-25 18:28:35,690 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:28:35,690 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:28:35,690 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:28:35,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-25 18:28:35,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:35,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1032702437, now seen corresponding path program 1 times [2022-11-25 18:28:35,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:35,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577488438] [2022-11-25 18:28:35,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:35,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:28:35,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:35,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577488438] [2022-11-25 18:28:35,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577488438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:28:35,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:28:35,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:28:35,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587600516] [2022-11-25 18:28:35,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:28:35,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:28:35,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:35,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:28:35,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:28:35,802 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 400 [2022-11-25 18:28:35,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 124 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:35,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:28:35,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 400 [2022-11-25 18:28:35,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:28:37,451 INFO L130 PetriNetUnfolder]: 4890/10411 cut-off events. [2022-11-25 18:28:37,451 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2022-11-25 18:28:37,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18026 conditions, 10411 events. 4890/10411 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 90229 event pairs, 2101 based on Foata normal form. 1234/10581 useless extension candidates. Maximal degree in co-relation 1961. Up to 7516 conditions per place. [2022-11-25 18:28:37,532 INFO L137 encePairwiseOnDemand]: 376/400 looper letters, 57 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2022-11-25 18:28:37,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 116 transitions, 368 flow [2022-11-25 18:28:37,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:28:37,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:28:37,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 666 transitions. [2022-11-25 18:28:37,543 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.555 [2022-11-25 18:28:37,543 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 666 transitions. [2022-11-25 18:28:37,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 666 transitions. [2022-11-25 18:28:37,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:28:37,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 666 transitions. [2022-11-25 18:28:37,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:37,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:37,552 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:37,552 INFO L175 Difference]: Start difference. First operand has 105 places, 124 transitions, 266 flow. Second operand 3 states and 666 transitions. [2022-11-25 18:28:37,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 116 transitions, 368 flow [2022-11-25 18:28:37,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 116 transitions, 368 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:28:37,559 INFO L231 Difference]: Finished difference. Result has 107 places, 104 transitions, 236 flow [2022-11-25 18:28:37,560 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=107, PETRI_TRANSITIONS=104} [2022-11-25 18:28:37,563 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 2 predicate places. [2022-11-25 18:28:37,564 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 104 transitions, 236 flow [2022-11-25 18:28:37,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:37,565 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:28:37,565 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 18:28:37,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:28:37,565 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-25 18:28:37,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:37,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1972880073, now seen corresponding path program 1 times [2022-11-25 18:28:37,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:37,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375635997] [2022-11-25 18:28:37,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:37,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:28:37,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:37,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375635997] [2022-11-25 18:28:37,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375635997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:28:37,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:28:37,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:28:37,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807219846] [2022-11-25 18:28:37,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:28:37,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:28:37,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:37,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:28:37,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:28:37,747 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 400 [2022-11-25 18:28:37,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 104 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:37,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:28:37,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 400 [2022-11-25 18:28:37,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:28:44,531 INFO L130 PetriNetUnfolder]: 28073/50988 cut-off events. [2022-11-25 18:28:44,532 INFO L131 PetriNetUnfolder]: For 1105/1105 co-relation queries the response was YES. [2022-11-25 18:28:44,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96329 conditions, 50988 events. 28073/50988 cut-off events. For 1105/1105 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 451336 event pairs, 10670 based on Foata normal form. 0/46933 useless extension candidates. Maximal degree in co-relation 96197. Up to 24539 conditions per place. [2022-11-25 18:28:44,915 INFO L137 encePairwiseOnDemand]: 367/400 looper letters, 109 selfloop transitions, 24 changer transitions 0/165 dead transitions. [2022-11-25 18:28:44,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 165 transitions, 642 flow [2022-11-25 18:28:44,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:28:44,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:28:44,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 632 transitions. [2022-11-25 18:28:44,920 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2022-11-25 18:28:44,920 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 632 transitions. [2022-11-25 18:28:44,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 632 transitions. [2022-11-25 18:28:44,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:28:44,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 632 transitions. [2022-11-25 18:28:44,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:44,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:44,929 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:44,930 INFO L175 Difference]: Start difference. First operand has 107 places, 104 transitions, 236 flow. Second operand 3 states and 632 transitions. [2022-11-25 18:28:44,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 165 transitions, 642 flow [2022-11-25 18:28:44,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 165 transitions, 639 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:28:44,947 INFO L231 Difference]: Finished difference. Result has 110 places, 128 transitions, 444 flow [2022-11-25 18:28:44,948 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=444, PETRI_PLACES=110, PETRI_TRANSITIONS=128} [2022-11-25 18:28:44,950 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 5 predicate places. [2022-11-25 18:28:44,951 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 128 transitions, 444 flow [2022-11-25 18:28:44,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:44,951 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:28:44,952 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-25 18:28:44,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:28:44,958 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-25 18:28:44,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:44,959 INFO L85 PathProgramCache]: Analyzing trace with hash -740926215, now seen corresponding path program 1 times [2022-11-25 18:28:44,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:44,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928872204] [2022-11-25 18:28:44,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:44,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:28:45,003 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:28:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:28:45,043 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:28:45,044 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:28:45,044 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-25 18:28:45,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-11-25 18:28:45,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-11-25 18:28:45,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-11-25 18:28:45,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-11-25 18:28:45,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-11-25 18:28:45,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-11-25 18:28:45,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-11-25 18:28:45,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-11-25 18:28:45,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-11-25 18:28:45,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-11-25 18:28:45,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-11-25 18:28:45,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-11-25 18:28:45,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-11-25 18:28:45,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-11-25 18:28:45,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-11-25 18:28:45,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-11-25 18:28:45,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-11-25 18:28:45,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-11-25 18:28:45,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-11-25 18:28:45,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-11-25 18:28:45,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-11-25 18:28:45,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:28:45,056 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-25 18:28:45,057 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 18:28:45,057 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 18:28:45,116 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 18:28:45,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 277 transitions, 584 flow [2022-11-25 18:28:45,280 INFO L130 PetriNetUnfolder]: 77/630 cut-off events. [2022-11-25 18:28:45,280 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-25 18:28:45,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 630 events. 77/630 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3001 event pairs, 1 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 428. Up to 16 conditions per place. [2022-11-25 18:28:45,287 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 277 transitions, 584 flow [2022-11-25 18:28:45,297 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 277 transitions, 584 flow [2022-11-25 18:28:45,297 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:28:45,298 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 249 places, 277 transitions, 584 flow [2022-11-25 18:28:45,299 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 249 places, 277 transitions, 584 flow [2022-11-25 18:28:45,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 277 transitions, 584 flow [2022-11-25 18:28:45,437 INFO L130 PetriNetUnfolder]: 77/630 cut-off events. [2022-11-25 18:28:45,437 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-25 18:28:45,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 630 events. 77/630 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3001 event pairs, 1 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 428. Up to 16 conditions per place. [2022-11-25 18:28:45,482 INFO L119 LiptonReduction]: Number of co-enabled transitions 43500 [2022-11-25 18:28:53,200 INFO L134 LiptonReduction]: Checked pairs total: 280241 [2022-11-25 18:28:53,201 INFO L136 LiptonReduction]: Total number of compositions: 212 [2022-11-25 18:28:53,203 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:28:53,207 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;@115c049, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:28:53,208 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-25 18:28:53,212 INFO L130 PetriNetUnfolder]: 5/21 cut-off events. [2022-11-25 18:28:53,213 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:28:53,213 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:28:53,213 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:28:53,213 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-25 18:28:53,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:53,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1536302272, now seen corresponding path program 1 times [2022-11-25 18:28:53,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:53,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356760467] [2022-11-25 18:28:53,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:53,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:53,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:28:53,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:53,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356760467] [2022-11-25 18:28:53,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356760467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:28:53,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:28:53,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:28:53,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794663799] [2022-11-25 18:28:53,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:28:53,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:28:53,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:53,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:28:53,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:28:53,290 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 489 [2022-11-25 18:28:53,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 162 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:53,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:28:53,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 489 [2022-11-25 18:28:53,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:29:12,526 INFO L130 PetriNetUnfolder]: 99879/169001 cut-off events. [2022-11-25 18:29:12,526 INFO L131 PetriNetUnfolder]: For 1647/1647 co-relation queries the response was YES. [2022-11-25 18:29:12,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305580 conditions, 169001 events. 99879/169001 cut-off events. For 1647/1647 co-relation queries the response was YES. Maximal size of possible extension queue 3729. Compared 1701364 event pairs, 59500 based on Foata normal form. 25085/179998 useless extension candidates. Maximal degree in co-relation 19600. Up to 135187 conditions per place. [2022-11-25 18:29:13,757 INFO L137 encePairwiseOnDemand]: 459/489 looper letters, 73 selfloop transitions, 2 changer transitions 0/149 dead transitions. [2022-11-25 18:29:13,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 149 transitions, 478 flow [2022-11-25 18:29:13,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:29:13,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:29:13,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 820 transitions. [2022-11-25 18:29:13,764 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5589638718473074 [2022-11-25 18:29:13,764 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 820 transitions. [2022-11-25 18:29:13,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 820 transitions. [2022-11-25 18:29:13,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:29:13,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 820 transitions. [2022-11-25 18:29:13,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:13,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:13,773 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:13,773 INFO L175 Difference]: Start difference. First operand has 137 places, 162 transitions, 354 flow. Second operand 3 states and 820 transitions. [2022-11-25 18:29:13,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 149 transitions, 478 flow [2022-11-25 18:29:13,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 149 transitions, 478 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:29:13,785 INFO L231 Difference]: Finished difference. Result has 139 places, 136 transitions, 312 flow [2022-11-25 18:29:13,785 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=139, PETRI_TRANSITIONS=136} [2022-11-25 18:29:13,787 INFO L288 CegarLoopForPetriNet]: 137 programPoint places, 2 predicate places. [2022-11-25 18:29:13,788 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 136 transitions, 312 flow [2022-11-25 18:29:13,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:13,788 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:29:13,789 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 18:29:13,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:29:13,789 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-25 18:29:13,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:13,790 INFO L85 PathProgramCache]: Analyzing trace with hash 419589587, now seen corresponding path program 1 times [2022-11-25 18:29:13,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:13,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349886227] [2022-11-25 18:29:13,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:13,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:13,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:29:13,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:29:13,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349886227] [2022-11-25 18:29:13,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349886227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:29:13,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:29:13,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:29:13,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553192780] [2022-11-25 18:29:13,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:29:13,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:29:13,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:13,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:29:13,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:29:13,931 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 489 [2022-11-25 18:29:13,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 136 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:13,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:29:13,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 489 [2022-11-25 18:29:13,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand