./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/queue_ok_longer.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_51bbccb8-5a9e-4b87-8645-75b614731e1c/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bbccb8-5a9e-4b87-8645-75b614731e1c/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_51bbccb8-5a9e-4b87-8645-75b614731e1c/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bbccb8-5a9e-4b87-8645-75b614731e1c/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_ok_longer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bbccb8-5a9e-4b87-8645-75b614731e1c/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_51bbccb8-5a9e-4b87-8645-75b614731e1c/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 f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a --- 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 17:17:18,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:17:18,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:17:18,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:17:18,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:17:18,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:17:18,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:17:18,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:17:18,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:17:18,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:17:18,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:17:18,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:17:18,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:17:18,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:17:18,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:17:18,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:17:18,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:17:18,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:17:18,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:17:18,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:17:18,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:17:18,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:17:18,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:17:18,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:17:18,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:17:18,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:17:18,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:17:18,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:17:18,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:17:18,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:17:18,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:17:18,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:17:18,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:17:18,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:17:18,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:17:18,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:17:18,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:17:18,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:17:18,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:17:18,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:17:18,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:17:18,242 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bbccb8-5a9e-4b87-8645-75b614731e1c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-25 17:17:18,294 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:17:18,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:17:18,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:17:18,296 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:17:18,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:17:18,297 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:17:18,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:17:18,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:17:18,299 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:17:18,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:17:18,301 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:17:18,301 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:17:18,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:17:18,302 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:17:18,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:17:18,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:17:18,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:17:18,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:17:18,304 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 17:17:18,304 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:17:18,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:17:18,305 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:17:18,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:17:18,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:17:18,306 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:17:18,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:17:18,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:17:18,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:17:18,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:17:18,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:17:18,308 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:17:18,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:17:18,309 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:17:18,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:17:18,310 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:17:18,310 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:17:18,311 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_51bbccb8-5a9e-4b87-8645-75b614731e1c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bbccb8-5a9e-4b87-8645-75b614731e1c/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a [2022-11-25 17:17:18,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:17:18,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:17:18,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:17:18,717 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:17:18,718 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:17:18,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bbccb8-5a9e-4b87-8645-75b614731e1c/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread/queue_ok_longer.i [2022-11-25 17:17:22,014 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:17:22,350 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:17:22,351 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bbccb8-5a9e-4b87-8645-75b614731e1c/sv-benchmarks/c/pthread/queue_ok_longer.i [2022-11-25 17:17:22,371 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bbccb8-5a9e-4b87-8645-75b614731e1c/bin/uautomizer-ZsLfNo2U6R/data/92692195d/ce859c0ba15a460b8e3af748fa9c65ef/FLAGe1698cd99 [2022-11-25 17:17:22,389 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bbccb8-5a9e-4b87-8645-75b614731e1c/bin/uautomizer-ZsLfNo2U6R/data/92692195d/ce859c0ba15a460b8e3af748fa9c65ef [2022-11-25 17:17:22,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:17:22,394 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:17:22,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:17:22,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:17:22,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:17:22,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:17:22" (1/1) ... [2022-11-25 17:17:22,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b59d85e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:22, skipping insertion in model container [2022-11-25 17:17:22,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:17:22" (1/1) ... [2022-11-25 17:17:22,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:17:22,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:17:23,073 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_51bbccb8-5a9e-4b87-8645-75b614731e1c/sv-benchmarks/c/pthread/queue_ok_longer.i[43272,43285] [2022-11-25 17:17:23,078 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_51bbccb8-5a9e-4b87-8645-75b614731e1c/sv-benchmarks/c/pthread/queue_ok_longer.i[43545,43558] [2022-11-25 17:17:23,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:17:23,099 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:17:23,174 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_51bbccb8-5a9e-4b87-8645-75b614731e1c/sv-benchmarks/c/pthread/queue_ok_longer.i[43272,43285] [2022-11-25 17:17:23,179 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_51bbccb8-5a9e-4b87-8645-75b614731e1c/sv-benchmarks/c/pthread/queue_ok_longer.i[43545,43558] [2022-11-25 17:17:23,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:17:23,252 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:17:23,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:23 WrapperNode [2022-11-25 17:17:23,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:17:23,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:17:23,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:17:23,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:17:23,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:23" (1/1) ... [2022-11-25 17:17:23,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:23" (1/1) ... [2022-11-25 17:17:23,446 INFO L138 Inliner]: procedures = 274, calls = 57, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 387 [2022-11-25 17:17:23,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:17:23,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:17:23,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:17:23,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:17:23,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:23" (1/1) ... [2022-11-25 17:17:23,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:23" (1/1) ... [2022-11-25 17:17:23,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:23" (1/1) ... [2022-11-25 17:17:23,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:23" (1/1) ... [2022-11-25 17:17:23,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:23" (1/1) ... [2022-11-25 17:17:23,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:23" (1/1) ... [2022-11-25 17:17:23,600 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:23" (1/1) ... [2022-11-25 17:17:23,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:23" (1/1) ... [2022-11-25 17:17:23,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:17:23,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:17:23,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:17:23,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:17:23,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:23" (1/1) ... [2022-11-25 17:17:23,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:17:23,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bbccb8-5a9e-4b87-8645-75b614731e1c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:17:23,683 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bbccb8-5a9e-4b87-8645-75b614731e1c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:17:23,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51bbccb8-5a9e-4b87-8645-75b614731e1c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:17:23,753 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-25 17:17:23,753 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-25 17:17:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-25 17:17:23,754 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-25 17:17:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:17:23,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:17:23,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:17:23,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:17:23,756 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 17:17:23,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:17:23,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:17:23,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:17:23,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:17:23,761 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 17:17:24,043 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:17:24,045 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:17:25,049 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:17:25,062 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:17:25,062 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 17:17:25,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:17:25 BoogieIcfgContainer [2022-11-25 17:17:25,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:17:25,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:17:25,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:17:25,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:17:25,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:17:22" (1/3) ... [2022-11-25 17:17:25,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e86480b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:17:25, skipping insertion in model container [2022-11-25 17:17:25,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:23" (2/3) ... [2022-11-25 17:17:25,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e86480b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:17:25, skipping insertion in model container [2022-11-25 17:17:25,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:17:25" (3/3) ... [2022-11-25 17:17:25,076 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longer.i [2022-11-25 17:17:25,087 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:17:25,100 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:17:25,101 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2022-11-25 17:17:25,101 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:17:25,338 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 17:17:25,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 441 places, 447 transitions, 910 flow [2022-11-25 17:17:25,827 INFO L130 PetriNetUnfolder]: 13/445 cut-off events. [2022-11-25 17:17:25,827 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:17:25,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 445 events. 13/445 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 784 event pairs, 0 based on Foata normal form. 0/397 useless extension candidates. Maximal degree in co-relation 315. Up to 3 conditions per place. [2022-11-25 17:17:25,849 INFO L82 GeneralOperation]: Start removeDead. Operand has 441 places, 447 transitions, 910 flow [2022-11-25 17:17:25,865 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 429 places, 435 transitions, 879 flow [2022-11-25 17:17:25,870 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:17:25,903 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 429 places, 435 transitions, 879 flow [2022-11-25 17:17:25,915 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 429 places, 435 transitions, 879 flow [2022-11-25 17:17:25,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 429 places, 435 transitions, 879 flow [2022-11-25 17:17:26,076 INFO L130 PetriNetUnfolder]: 13/435 cut-off events. [2022-11-25 17:17:26,076 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:17:26,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 435 events. 13/435 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 710 event pairs, 0 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 315. Up to 3 conditions per place. [2022-11-25 17:17:26,113 INFO L119 LiptonReduction]: Number of co-enabled transitions 53036 [2022-11-25 17:18:22,728 WARN L233 SmtUtils]: Spent 24.39s on a formula simplification. DAG size of input: 202 DAG size of output: 196 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:18:34,686 WARN L233 SmtUtils]: Spent 11.95s on a formula simplification that was a NOOP. DAG size: 192 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:18:49,353 WARN L233 SmtUtils]: Spent 14.66s on a formula simplification. DAG size of input: 202 DAG size of output: 196 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:19:01,839 WARN L233 SmtUtils]: Spent 12.48s on a formula simplification that was a NOOP. DAG size: 192 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:19:35,486 WARN L233 SmtUtils]: Spent 33.27s on a formula simplification. DAG size of input: 214 DAG size of output: 209 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:19:47,750 WARN L233 SmtUtils]: Spent 12.26s on a formula simplification that was a NOOP. DAG size: 207 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:20:23,897 WARN L233 SmtUtils]: Spent 36.14s on a formula simplification. DAG size of input: 217 DAG size of output: 212 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:20:43,579 WARN L233 SmtUtils]: Spent 19.68s on a formula simplification that was a NOOP. DAG size: 210 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:20:43,595 INFO L134 LiptonReduction]: Checked pairs total: 419781 [2022-11-25 17:20:43,595 INFO L136 LiptonReduction]: Total number of compositions: 300 [2022-11-25 17:20:43,612 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:20:43,618 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;@78b54e7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:20:43,618 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2022-11-25 17:20:43,620 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-25 17:20:43,621 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:20:43,621 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:43,622 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 17:20:43,622 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2022-11-25 17:20:43,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:43,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1570, now seen corresponding path program 1 times [2022-11-25 17:20:43,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:43,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351246090] [2022-11-25 17:20:43,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:43,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:43,799 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 17:20:43,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:43,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351246090] [2022-11-25 17:20:43,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351246090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:20:43,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:20:43,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 17:20:43,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728667485] [2022-11-25 17:20:43,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:20:43,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:20:43,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:43,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:20:43,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:20:43,864 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 747 [2022-11-25 17:20:43,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 203 transitions, 415 flow. Second operand has 2 states, 2 states have (on average 436.5) internal successors, (873), 2 states have internal predecessors, (873), 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 17:20:43,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:43,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 747 [2022-11-25 17:20:43,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:45,499 INFO L130 PetriNetUnfolder]: 2479/7772 cut-off events. [2022-11-25 17:20:45,500 INFO L131 PetriNetUnfolder]: For 116/166 co-relation queries the response was YES. [2022-11-25 17:20:45,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11842 conditions, 7772 events. 2479/7772 cut-off events. For 116/166 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 65301 event pairs, 2097 based on Foata normal form. 0/7215 useless extension candidates. Maximal degree in co-relation 11402. Up to 3987 conditions per place. [2022-11-25 17:20:45,562 INFO L137 encePairwiseOnDemand]: 740/747 looper letters, 65 selfloop transitions, 0 changer transitions 0/196 dead transitions. [2022-11-25 17:20:45,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 196 transitions, 531 flow [2022-11-25 17:20:45,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:20:45,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:20:45,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 944 transitions. [2022-11-25 17:20:45,593 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6318607764390897 [2022-11-25 17:20:45,594 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 944 transitions. [2022-11-25 17:20:45,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 944 transitions. [2022-11-25 17:20:45,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:45,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 944 transitions. [2022-11-25 17:20:45,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 472.0) internal successors, (944), 2 states have internal predecessors, (944), 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 17:20:45,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 747.0) internal successors, (2241), 3 states have internal predecessors, (2241), 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 17:20:45,627 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 747.0) internal successors, (2241), 3 states have internal predecessors, (2241), 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 17:20:45,629 INFO L175 Difference]: Start difference. First operand has 203 places, 203 transitions, 415 flow. Second operand 2 states and 944 transitions. [2022-11-25 17:20:45,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 196 transitions, 531 flow [2022-11-25 17:20:45,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 196 transitions, 526 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 17:20:45,646 INFO L231 Difference]: Finished difference. Result has 194 places, 196 transitions, 396 flow [2022-11-25 17:20:45,652 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=747, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=396, PETRI_PLACES=194, PETRI_TRANSITIONS=196} [2022-11-25 17:20:45,657 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, -9 predicate places. [2022-11-25 17:20:45,658 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 196 transitions, 396 flow [2022-11-25 17:20:45,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 436.5) internal successors, (873), 2 states have internal predecessors, (873), 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 17:20:45,659 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:45,659 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:20:45,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:20:45,661 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2022-11-25 17:20:45,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:45,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1499681632, now seen corresponding path program 1 times [2022-11-25 17:20:45,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:45,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437836184] [2022-11-25 17:20:45,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:45,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:45,954 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 17:20:45,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:45,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437836184] [2022-11-25 17:20:45,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437836184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:20:45,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:20:45,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:20:45,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721832426] [2022-11-25 17:20:45,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:20:45,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:20:45,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:45,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:20:45,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:20:45,988 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 430 out of 747 [2022-11-25 17:20:45,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 196 transitions, 396 flow. Second operand has 3 states, 3 states have (on average 431.6666666666667) internal successors, (1295), 3 states have internal predecessors, (1295), 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 17:20:45,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:45,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 430 of 747 [2022-11-25 17:20:45,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:47,595 INFO L130 PetriNetUnfolder]: 2859/8607 cut-off events. [2022-11-25 17:20:47,595 INFO L131 PetriNetUnfolder]: For 20/113 co-relation queries the response was YES. [2022-11-25 17:20:47,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13351 conditions, 8607 events. 2859/8607 cut-off events. For 20/113 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 73929 event pairs, 543 based on Foata normal form. 1/7824 useless extension candidates. Maximal degree in co-relation 13348. Up to 3496 conditions per place. [2022-11-25 17:20:47,673 INFO L137 encePairwiseOnDemand]: 741/747 looper letters, 123 selfloop transitions, 5 changer transitions 0/256 dead transitions. [2022-11-25 17:20:47,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 256 transitions, 775 flow [2022-11-25 17:20:47,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:20:47,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:20:47,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1419 transitions. [2022-11-25 17:20:47,678 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6331994645247657 [2022-11-25 17:20:47,679 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1419 transitions. [2022-11-25 17:20:47,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1419 transitions. [2022-11-25 17:20:47,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:47,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1419 transitions. [2022-11-25 17:20:47,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 473.0) internal successors, (1419), 3 states have internal predecessors, (1419), 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 17:20:47,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 747.0) internal successors, (2988), 4 states have internal predecessors, (2988), 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 17:20:47,731 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 747.0) internal successors, (2988), 4 states have internal predecessors, (2988), 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 17:20:47,731 INFO L175 Difference]: Start difference. First operand has 194 places, 196 transitions, 396 flow. Second operand 3 states and 1419 transitions. [2022-11-25 17:20:47,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 256 transitions, 775 flow [2022-11-25 17:20:47,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 256 transitions, 775 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:20:47,737 INFO L231 Difference]: Finished difference. Result has 198 places, 200 transitions, 434 flow [2022-11-25 17:20:47,738 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=747, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=434, PETRI_PLACES=198, PETRI_TRANSITIONS=200} [2022-11-25 17:20:47,739 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, -5 predicate places. [2022-11-25 17:20:47,739 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 200 transitions, 434 flow [2022-11-25 17:20:47,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 431.6666666666667) internal successors, (1295), 3 states have internal predecessors, (1295), 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 17:20:47,741 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:47,741 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:20:47,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:20:47,742 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2022-11-25 17:20:47,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:47,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1918665186, now seen corresponding path program 1 times [2022-11-25 17:20:47,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:47,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646760116] [2022-11-25 17:20:47,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:47,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:47,845 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 17:20:47,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:47,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646760116] [2022-11-25 17:20:47,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646760116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:20:47,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:20:47,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:20:47,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532211843] [2022-11-25 17:20:47,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:20:47,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:20:47,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:47,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:20:47,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:20:47,880 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 430 out of 747 [2022-11-25 17:20:47,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 200 transitions, 434 flow. Second operand has 3 states, 3 states have (on average 432.3333333333333) internal successors, (1297), 3 states have internal predecessors, (1297), 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 17:20:47,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:47,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 430 of 747 [2022-11-25 17:20:47,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:49,827 INFO L130 PetriNetUnfolder]: 3049/9738 cut-off events. [2022-11-25 17:20:49,827 INFO L131 PetriNetUnfolder]: For 413/552 co-relation queries the response was YES. [2022-11-25 17:20:49,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15192 conditions, 9738 events. 3049/9738 cut-off events. For 413/552 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 88358 event pairs, 696 based on Foata normal form. 57/8954 useless extension candidates. Maximal degree in co-relation 15187. Up to 3618 conditions per place. [2022-11-25 17:20:49,904 INFO L137 encePairwiseOnDemand]: 741/747 looper letters, 124 selfloop transitions, 5 changer transitions 0/258 dead transitions. [2022-11-25 17:20:49,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 258 transitions, 815 flow [2022-11-25 17:20:49,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:20:49,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:20:49,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1417 transitions. [2022-11-25 17:20:49,914 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6323070058009818 [2022-11-25 17:20:49,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1417 transitions. [2022-11-25 17:20:49,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1417 transitions. [2022-11-25 17:20:49,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:49,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1417 transitions. [2022-11-25 17:20:49,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 472.3333333333333) internal successors, (1417), 3 states have internal predecessors, (1417), 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 17:20:49,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 747.0) internal successors, (2988), 4 states have internal predecessors, (2988), 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 17:20:49,930 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 747.0) internal successors, (2988), 4 states have internal predecessors, (2988), 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 17:20:49,930 INFO L175 Difference]: Start difference. First operand has 198 places, 200 transitions, 434 flow. Second operand 3 states and 1417 transitions. [2022-11-25 17:20:49,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 258 transitions, 815 flow [2022-11-25 17:20:49,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 258 transitions, 803 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:20:49,940 INFO L231 Difference]: Finished difference. Result has 200 places, 204 transitions, 462 flow [2022-11-25 17:20:49,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=747, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=462, PETRI_PLACES=200, PETRI_TRANSITIONS=204} [2022-11-25 17:20:49,942 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, -3 predicate places. [2022-11-25 17:20:49,943 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 204 transitions, 462 flow [2022-11-25 17:20:49,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 432.3333333333333) internal successors, (1297), 3 states have internal predecessors, (1297), 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 17:20:49,944 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:49,944 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:20:49,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:20:49,945 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2022-11-25 17:20:49,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:49,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1992270440, now seen corresponding path program 1 times [2022-11-25 17:20:49,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:49,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606162043] [2022-11-25 17:20:49,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:49,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:50,119 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 17:20:50,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:50,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606162043] [2022-11-25 17:20:50,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606162043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:20:50,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:20:50,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:20:50,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478728238] [2022-11-25 17:20:50,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:20:50,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:20:50,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:50,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:20:50,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:20:50,193 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 747 [2022-11-25 17:20:50,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 204 transitions, 462 flow. Second operand has 3 states, 3 states have (on average 434.0) internal successors, (1302), 3 states have internal predecessors, (1302), 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 17:20:50,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:50,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 747 [2022-11-25 17:20:50,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:52,920 INFO L130 PetriNetUnfolder]: 4580/15205 cut-off events. [2022-11-25 17:20:52,921 INFO L131 PetriNetUnfolder]: For 861/1103 co-relation queries the response was YES. [2022-11-25 17:20:52,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23687 conditions, 15205 events. 4580/15205 cut-off events. For 861/1103 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 144574 event pairs, 2515 based on Foata normal form. 55/14266 useless extension candidates. Maximal degree in co-relation 23681. Up to 4761 conditions per place. [2022-11-25 17:20:53,088 INFO L137 encePairwiseOnDemand]: 744/747 looper letters, 120 selfloop transitions, 2 changer transitions 0/256 dead transitions. [2022-11-25 17:20:53,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 256 transitions, 824 flow [2022-11-25 17:20:53,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:20:53,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:20:53,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1414 transitions. [2022-11-25 17:20:53,095 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6309683177153057 [2022-11-25 17:20:53,095 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1414 transitions. [2022-11-25 17:20:53,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1414 transitions. [2022-11-25 17:20:53,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:53,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1414 transitions. [2022-11-25 17:20:53,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 471.3333333333333) internal successors, (1414), 3 states have internal predecessors, (1414), 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 17:20:53,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 747.0) internal successors, (2988), 4 states have internal predecessors, (2988), 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 17:20:53,111 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 747.0) internal successors, (2988), 4 states have internal predecessors, (2988), 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 17:20:53,111 INFO L175 Difference]: Start difference. First operand has 200 places, 204 transitions, 462 flow. Second operand 3 states and 1414 transitions. [2022-11-25 17:20:53,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 256 transitions, 824 flow [2022-11-25 17:20:53,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 256 transitions, 810 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:20:53,125 INFO L231 Difference]: Finished difference. Result has 201 places, 205 transitions, 464 flow [2022-11-25 17:20:53,126 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=747, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=201, PETRI_TRANSITIONS=205} [2022-11-25 17:20:53,128 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, -2 predicate places. [2022-11-25 17:20:53,129 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 205 transitions, 464 flow [2022-11-25 17:20:53,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 434.0) internal successors, (1302), 3 states have internal predecessors, (1302), 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 17:20:53,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:53,130 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:20:53,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:20:53,131 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2022-11-25 17:20:53,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:53,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1024182960, now seen corresponding path program 1 times [2022-11-25 17:20:53,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:53,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243321045] [2022-11-25 17:20:53,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:53,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:53,758 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 17:20:53,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:53,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243321045] [2022-11-25 17:20:53,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243321045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:20:53,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:20:53,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:20:53,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002264234] [2022-11-25 17:20:53,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:20:53,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:20:53,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:53,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:20:53,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:20:55,139 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 747 [2022-11-25 17:20:55,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 205 transitions, 464 flow. Second operand has 6 states, 6 states have (on average 384.6666666666667) internal successors, (2308), 6 states have internal predecessors, (2308), 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 17:20:55,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:55,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 747 [2022-11-25 17:20:55,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:15,322 INFO L130 PetriNetUnfolder]: 81273/148789 cut-off events. [2022-11-25 17:21:15,322 INFO L131 PetriNetUnfolder]: For 7386/9331 co-relation queries the response was YES. [2022-11-25 17:21:15,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281625 conditions, 148789 events. 81273/148789 cut-off events. For 7386/9331 co-relation queries the response was YES. Maximal size of possible extension queue 1781. Compared 1428053 event pairs, 30046 based on Foata normal form. 468/139702 useless extension candidates. Maximal degree in co-relation 281618. Up to 83696 conditions per place. [2022-11-25 17:21:16,222 INFO L137 encePairwiseOnDemand]: 709/747 looper letters, 346 selfloop transitions, 133 changer transitions 0/579 dead transitions. [2022-11-25 17:21:16,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 579 transitions, 2299 flow [2022-11-25 17:21:16,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:21:16,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:21:16,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2748 transitions. [2022-11-25 17:21:16,231 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6131191432396251 [2022-11-25 17:21:16,233 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2748 transitions. [2022-11-25 17:21:16,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2748 transitions. [2022-11-25 17:21:16,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:16,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2748 transitions. [2022-11-25 17:21:16,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 458.0) internal successors, (2748), 6 states have internal predecessors, (2748), 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 17:21:16,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 747.0) internal successors, (5229), 7 states have internal predecessors, (5229), 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 17:21:16,259 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 747.0) internal successors, (5229), 7 states have internal predecessors, (5229), 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 17:21:16,259 INFO L175 Difference]: Start difference. First operand has 201 places, 205 transitions, 464 flow. Second operand 6 states and 2748 transitions. [2022-11-25 17:21:16,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 579 transitions, 2299 flow [2022-11-25 17:21:16,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 579 transitions, 2289 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:21:16,293 INFO L231 Difference]: Finished difference. Result has 210 places, 337 transitions, 1332 flow [2022-11-25 17:21:16,294 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=747, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1332, PETRI_PLACES=210, PETRI_TRANSITIONS=337} [2022-11-25 17:21:16,297 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, 7 predicate places. [2022-11-25 17:21:16,297 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 337 transitions, 1332 flow [2022-11-25 17:21:16,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 384.6666666666667) internal successors, (2308), 6 states have internal predecessors, (2308), 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 17:21:16,299 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:16,300 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:21:16,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:21:16,300 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err12ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2022-11-25 17:21:16,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:16,302 INFO L85 PathProgramCache]: Analyzing trace with hash -135006055, now seen corresponding path program 1 times [2022-11-25 17:21:16,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:16,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391952712] [2022-11-25 17:21:16,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:16,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:16,397 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 17:21:16,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:16,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391952712] [2022-11-25 17:21:16,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391952712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:16,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:16,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:21:16,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271118403] [2022-11-25 17:21:16,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:16,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:21:16,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:16,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:21:16,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:21:16,429 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 747 [2022-11-25 17:21:16,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 337 transitions, 1332 flow. Second operand has 3 states, 3 states have (on average 435.0) internal successors, (1305), 3 states have internal predecessors, (1305), 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 17:21:16,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:16,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 747 [2022-11-25 17:21:16,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand