./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/14_spin2003.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afda09a-d734-4a32-abda-00704a790c64/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afda09a-d734-4a32-abda-00704a790c64/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_8afda09a-d734-4a32-abda-00704a790c64/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afda09a-d734-4a32-abda-00704a790c64/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/14_spin2003.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afda09a-d734-4a32-abda-00704a790c64/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_8afda09a-d734-4a32-abda-00704a790c64/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 f5ed9d077a05ec08544f0d3c902eb6b5aa6ad768c4ec69a1caaef2b54748a07e --- 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 17:00:32,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:00:32,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:00:32,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:00:32,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:00:32,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:00:32,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:00:32,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:00:32,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:00:32,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:00:32,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:00:32,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:00:32,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:00:32,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:00:32,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:00:32,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:00:32,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:00:32,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:00:32,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:00:32,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:00:32,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:00:32,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:00:32,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:00:32,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:00:32,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:00:32,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:00:32,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:00:32,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:00:32,309 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:00:32,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:00:32,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:00:32,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:00:32,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:00:32,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:00:32,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:00:32,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:00:32,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:00:32,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:00:32,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:00:32,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:00:32,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:00:32,320 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afda09a-d734-4a32-abda-00704a790c64/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-25 17:00:32,363 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:00:32,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:00:32,364 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:00:32,364 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:00:32,365 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:00:32,365 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:00:32,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:00:32,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:00:32,366 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:00:32,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:00:32,368 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:00:32,368 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:00:32,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:00:32,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:00:32,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:00:32,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:00:32,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:00:32,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:00:32,369 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 17:00:32,369 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:00:32,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:00:32,370 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:00:32,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:00:32,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:00:32,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:00:32,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:00:32,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:00:32,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:00:32,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:00:32,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:00:32,372 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:00:32,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:00:32,373 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:00:32,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:00:32,373 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:00:32,373 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:00:32,373 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_8afda09a-d734-4a32-abda-00704a790c64/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afda09a-d734-4a32-abda-00704a790c64/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5ed9d077a05ec08544f0d3c902eb6b5aa6ad768c4ec69a1caaef2b54748a07e [2022-11-25 17:00:32,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:00:32,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:00:32,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:00:32,728 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:00:32,728 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:00:32,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afda09a-d734-4a32-abda-00704a790c64/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-ext/14_spin2003.i [2022-11-25 17:00:35,719 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:00:36,062 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:00:36,063 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afda09a-d734-4a32-abda-00704a790c64/sv-benchmarks/c/pthread-ext/14_spin2003.i [2022-11-25 17:00:36,092 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afda09a-d734-4a32-abda-00704a790c64/bin/uautomizer-ZsLfNo2U6R/data/798114fa3/0dbd00c41e5e4fe78b3de7c449552356/FLAGa5cb21170 [2022-11-25 17:00:36,108 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afda09a-d734-4a32-abda-00704a790c64/bin/uautomizer-ZsLfNo2U6R/data/798114fa3/0dbd00c41e5e4fe78b3de7c449552356 [2022-11-25 17:00:36,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:00:36,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:00:36,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:00:36,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:00:36,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:00:36,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:00:36" (1/1) ... [2022-11-25 17:00:36,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3836c1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:36, skipping insertion in model container [2022-11-25 17:00:36,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:00:36" (1/1) ... [2022-11-25 17:00:36,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:00:36,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:00:36,587 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_8afda09a-d734-4a32-abda-00704a790c64/sv-benchmarks/c/pthread-ext/14_spin2003.i[30203,30216] [2022-11-25 17:00:36,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:00:36,603 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:00:36,640 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_8afda09a-d734-4a32-abda-00704a790c64/sv-benchmarks/c/pthread-ext/14_spin2003.i[30203,30216] [2022-11-25 17:00:36,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:00:36,678 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:00:36,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:36 WrapperNode [2022-11-25 17:00:36,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:00:36,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:00:36,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:00:36,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:00:36,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:36" (1/1) ... [2022-11-25 17:00:36,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:36" (1/1) ... [2022-11-25 17:00:36,751 INFO L138 Inliner]: procedures = 169, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 69 [2022-11-25 17:00:36,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:00:36,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:00:36,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:00:36,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:00:36,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:36" (1/1) ... [2022-11-25 17:00:36,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:36" (1/1) ... [2022-11-25 17:00:36,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:36" (1/1) ... [2022-11-25 17:00:36,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:36" (1/1) ... [2022-11-25 17:00:36,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:36" (1/1) ... [2022-11-25 17:00:36,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:36" (1/1) ... [2022-11-25 17:00:36,796 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:36" (1/1) ... [2022-11-25 17:00:36,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:36" (1/1) ... [2022-11-25 17:00:36,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:00:36,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:00:36,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:00:36,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:00:36,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:36" (1/1) ... [2022-11-25 17:00:36,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:00:36,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afda09a-d734-4a32-abda-00704a790c64/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:00:36,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afda09a-d734-4a32-abda-00704a790c64/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:00:36,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afda09a-d734-4a32-abda-00704a790c64/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:00:36,901 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-25 17:00:36,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-25 17:00:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:00:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:00:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:00:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:00:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:00:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:00:36,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:00:36,905 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 17:00:37,068 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:00:37,070 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:00:37,300 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:00:37,373 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:00:37,374 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 17:00:37,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:00:37 BoogieIcfgContainer [2022-11-25 17:00:37,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:00:37,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:00:37,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:00:37,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:00:37,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:00:36" (1/3) ... [2022-11-25 17:00:37,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c8eeea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:00:37, skipping insertion in model container [2022-11-25 17:00:37,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:36" (2/3) ... [2022-11-25 17:00:37,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c8eeea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:00:37, skipping insertion in model container [2022-11-25 17:00:37,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:00:37" (3/3) ... [2022-11-25 17:00:37,389 INFO L112 eAbstractionObserver]: Analyzing ICFG 14_spin2003.i [2022-11-25 17:00:37,399 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:00:37,411 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:00:37,412 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-25 17:00:37,412 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:00:37,466 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:00:37,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 58 transitions, 121 flow [2022-11-25 17:00:37,607 INFO L130 PetriNetUnfolder]: 3/69 cut-off events. [2022-11-25 17:00:37,607 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:00:37,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 69 events. 3/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 41. Up to 4 conditions per place. [2022-11-25 17:00:37,613 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 58 transitions, 121 flow [2022-11-25 17:00:37,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 58 transitions, 121 flow [2022-11-25 17:00:37,621 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:00:37,637 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 58 transitions, 121 flow [2022-11-25 17:00:37,640 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 58 transitions, 121 flow [2022-11-25 17:00:37,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 58 transitions, 121 flow [2022-11-25 17:00:37,660 INFO L130 PetriNetUnfolder]: 3/69 cut-off events. [2022-11-25 17:00:37,660 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:00:37,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 69 events. 3/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 41. Up to 4 conditions per place. [2022-11-25 17:00:37,663 INFO L119 LiptonReduction]: Number of co-enabled transitions 784 [2022-11-25 17:00:39,629 INFO L134 LiptonReduction]: Checked pairs total: 748 [2022-11-25 17:00:39,629 INFO L136 LiptonReduction]: Total number of compositions: 63 [2022-11-25 17:00:39,646 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:00:39,653 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;@2aeae697, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:00:39,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-25 17:00:39,657 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-11-25 17:00:39,658 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:00:39,658 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:00:39,659 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:00:39,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-11-25 17:00:39,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:00:39,665 INFO L85 PathProgramCache]: Analyzing trace with hash 10016570, now seen corresponding path program 1 times [2022-11-25 17:00:39,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:00:39,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003622783] [2022-11-25 17:00:39,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:00:39,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:00:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:00:39,857 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 17:00:39,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:00:39,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003622783] [2022-11-25 17:00:39,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003622783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:00:39,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:00:39,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:00:39,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694835588] [2022-11-25 17:00:39,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:00:39,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:00:39,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:00:39,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:00:39,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:00:39,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 121 [2022-11-25 17:00:39,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 14 transitions, 33 flow. Second operand has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 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 17:00:39,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:00:39,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 121 [2022-11-25 17:00:39,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:00:39,927 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2022-11-25 17:00:39,927 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:00:39,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 12 events. 2/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 2 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 14. Up to 11 conditions per place. [2022-11-25 17:00:39,928 INFO L137 encePairwiseOnDemand]: 113/121 looper letters, 5 selfloop transitions, 0 changer transitions 0/6 dead transitions. [2022-11-25 17:00:39,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 27 flow [2022-11-25 17:00:39,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:00:39,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:00:39,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 107 transitions. [2022-11-25 17:00:39,942 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44214876033057854 [2022-11-25 17:00:39,943 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 107 transitions. [2022-11-25 17:00:39,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 107 transitions. [2022-11-25 17:00:39,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:00:39,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 107 transitions. [2022-11-25 17:00:39,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 53.5) internal successors, (107), 2 states have internal predecessors, (107), 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 17:00:39,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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 17:00:39,954 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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 17:00:39,956 INFO L175 Difference]: Start difference. First operand has 17 places, 14 transitions, 33 flow. Second operand 2 states and 107 transitions. [2022-11-25 17:00:39,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 27 flow [2022-11-25 17:00:39,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 27 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:00:39,961 INFO L231 Difference]: Finished difference. Result has 10 places, 6 transitions, 17 flow [2022-11-25 17:00:39,963 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=17, PETRI_PLACES=10, PETRI_TRANSITIONS=6} [2022-11-25 17:00:39,966 INFO L288 CegarLoopForPetriNet]: 17 programPoint places, -7 predicate places. [2022-11-25 17:00:39,967 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 6 transitions, 17 flow [2022-11-25 17:00:39,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 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 17:00:39,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:00:39,968 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-11-25 17:00:39,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:00:39,968 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-11-25 17:00:39,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:00:39,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1035993232, now seen corresponding path program 1 times [2022-11-25 17:00:39,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:00:39,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196962201] [2022-11-25 17:00:39,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:00:39,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:00:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:00:39,995 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:00:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:00:40,027 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:00:40,027 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:00:40,030 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-25 17:00:40,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-11-25 17:00:40,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-11-25 17:00:40,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-11-25 17:00:40,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-11-25 17:00:40,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-11-25 17:00:40,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-11-25 17:00:40,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-11-25 17:00:40,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-11-25 17:00:40,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-11-25 17:00:40,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-11-25 17:00:40,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-11-25 17:00:40,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-11-25 17:00:40,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-11-25 17:00:40,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-11-25 17:00:40,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:00:40,037 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 17:00:40,040 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:00:40,040 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 17:00:40,060 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:00:40,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 87 transitions, 186 flow [2022-11-25 17:00:40,089 INFO L130 PetriNetUnfolder]: 5/111 cut-off events. [2022-11-25 17:00:40,089 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:00:40,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 111 events. 5/111 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 208 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 70. Up to 6 conditions per place. [2022-11-25 17:00:40,091 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 87 transitions, 186 flow [2022-11-25 17:00:40,093 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 87 transitions, 186 flow [2022-11-25 17:00:40,093 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:00:40,094 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 87 transitions, 186 flow [2022-11-25 17:00:40,094 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 87 transitions, 186 flow [2022-11-25 17:00:40,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 87 transitions, 186 flow [2022-11-25 17:00:40,117 INFO L130 PetriNetUnfolder]: 5/111 cut-off events. [2022-11-25 17:00:40,118 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:00:40,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 111 events. 5/111 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 208 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 70. Up to 6 conditions per place. [2022-11-25 17:00:40,123 INFO L119 LiptonReduction]: Number of co-enabled transitions 3192 [2022-11-25 17:00:41,591 INFO L134 LiptonReduction]: Checked pairs total: 18452 [2022-11-25 17:00:41,592 INFO L136 LiptonReduction]: Total number of compositions: 64 [2022-11-25 17:00:41,594 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:00:41,595 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;@2aeae697, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:00:41,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-25 17:00:41,603 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-11-25 17:00:41,604 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:00:41,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:00:41,604 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:00:41,604 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-11-25 17:00:41,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:00:41,605 INFO L85 PathProgramCache]: Analyzing trace with hash 15472093, now seen corresponding path program 1 times [2022-11-25 17:00:41,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:00:41,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014727621] [2022-11-25 17:00:41,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:00:41,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:00:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:00:41,654 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 17:00:41,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:00:41,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014727621] [2022-11-25 17:00:41,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014727621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:00:41,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:00:41,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:00:41,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110563563] [2022-11-25 17:00:41,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:00:41,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:00:41,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:00:41,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:00:41,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:00:41,657 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 151 [2022-11-25 17:00:41,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 104 flow. Second operand has 2 states, 2 states have (on average 69.0) internal successors, (138), 2 states have internal predecessors, (138), 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 17:00:41,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:00:41,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 151 [2022-11-25 17:00:41,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:00:41,748 INFO L130 PetriNetUnfolder]: 132/397 cut-off events. [2022-11-25 17:00:41,748 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-25 17:00:41,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 676 conditions, 397 events. 132/397 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2233 event pairs, 132 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 397. Up to 247 conditions per place. [2022-11-25 17:00:41,753 INFO L137 encePairwiseOnDemand]: 140/151 looper letters, 16 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2022-11-25 17:00:41,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 114 flow [2022-11-25 17:00:41,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:00:41,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:00:41,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 161 transitions. [2022-11-25 17:00:41,755 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5331125827814569 [2022-11-25 17:00:41,755 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 161 transitions. [2022-11-25 17:00:41,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 161 transitions. [2022-11-25 17:00:41,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:00:41,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 161 transitions. [2022-11-25 17:00:41,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 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 17:00:41,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:00:41,759 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:00:41,759 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 104 flow. Second operand 2 states and 161 transitions. [2022-11-25 17:00:41,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 114 flow [2022-11-25 17:00:41,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 35 transitions, 112 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-25 17:00:41,761 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 80 flow [2022-11-25 17:00:41,762 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=80, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2022-11-25 17:00:41,762 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -8 predicate places. [2022-11-25 17:00:41,763 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 80 flow [2022-11-25 17:00:41,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.0) internal successors, (138), 2 states have internal predecessors, (138), 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 17:00:41,763 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:00:41,763 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:00:41,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:00:41,764 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-11-25 17:00:41,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:00:41,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1368044819, now seen corresponding path program 1 times [2022-11-25 17:00:41,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:00:41,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952412510] [2022-11-25 17:00:41,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:00:41,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:00:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:00:41,815 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 17:00:41,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:00:41,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952412510] [2022-11-25 17:00:41,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952412510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:00:41,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:00:41,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:00:41,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102883779] [2022-11-25 17:00:41,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:00:41,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:00:41,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:00:41,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:00:41,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:00:41,848 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 151 [2022-11-25 17:00:41,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 17:00:41,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:00:41,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 151 [2022-11-25 17:00:41,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:00:41,979 INFO L130 PetriNetUnfolder]: 227/515 cut-off events. [2022-11-25 17:00:41,979 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-25 17:00:41,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 515 events. 227/515 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2875 event pairs, 181 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 955. Up to 366 conditions per place. [2022-11-25 17:00:41,985 INFO L137 encePairwiseOnDemand]: 145/151 looper letters, 27 selfloop transitions, 5 changer transitions 0/47 dead transitions. [2022-11-25 17:00:41,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 173 flow [2022-11-25 17:00:41,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:00:41,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:00:41,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 204 transitions. [2022-11-25 17:00:41,988 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4503311258278146 [2022-11-25 17:00:41,988 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 204 transitions. [2022-11-25 17:00:41,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 204 transitions. [2022-11-25 17:00:41,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:00:41,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 204 transitions. [2022-11-25 17:00:41,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 17:00:41,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 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 17:00:41,993 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 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 17:00:41,993 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 80 flow. Second operand 3 states and 204 transitions. [2022-11-25 17:00:41,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 173 flow [2022-11-25 17:00:41,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 173 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:00:41,996 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 113 flow [2022-11-25 17:00:41,996 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2022-11-25 17:00:41,997 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -5 predicate places. [2022-11-25 17:00:41,997 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 113 flow [2022-11-25 17:00:41,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 17:00:41,998 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:00:41,998 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:00:41,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:00:41,999 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-11-25 17:00:41,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:00:42,000 INFO L85 PathProgramCache]: Analyzing trace with hash 480002904, now seen corresponding path program 1 times [2022-11-25 17:00:42,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:00:42,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450690467] [2022-11-25 17:00:42,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:00:42,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:00:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:00:42,046 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 17:00:42,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:00:42,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450690467] [2022-11-25 17:00:42,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450690467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:00:42,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:00:42,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:00:42,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34263107] [2022-11-25 17:00:42,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:00:42,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:00:42,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:00:42,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:00:42,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:00:42,090 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 151 [2022-11-25 17:00:42,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 17:00:42,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:00:42,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 151 [2022-11-25 17:00:42,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:00:42,244 INFO L130 PetriNetUnfolder]: 299/648 cut-off events. [2022-11-25 17:00:42,244 INFO L131 PetriNetUnfolder]: For 112/118 co-relation queries the response was YES. [2022-11-25 17:00:42,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1377 conditions, 648 events. 299/648 cut-off events. For 112/118 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3682 event pairs, 189 based on Foata normal form. 0/595 useless extension candidates. Maximal degree in co-relation 1370. Up to 428 conditions per place. [2022-11-25 17:00:42,249 INFO L137 encePairwiseOnDemand]: 144/151 looper letters, 32 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2022-11-25 17:00:42,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 52 transitions, 226 flow [2022-11-25 17:00:42,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:00:42,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:00:42,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 206 transitions. [2022-11-25 17:00:42,251 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45474613686534215 [2022-11-25 17:00:42,252 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 206 transitions. [2022-11-25 17:00:42,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 206 transitions. [2022-11-25 17:00:42,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:00:42,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 206 transitions. [2022-11-25 17:00:42,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 17:00:42,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 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 17:00:42,255 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 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 17:00:42,255 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 113 flow. Second operand 3 states and 206 transitions. [2022-11-25 17:00:42,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 52 transitions, 226 flow [2022-11-25 17:00:42,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:00:42,258 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 160 flow [2022-11-25 17:00:42,258 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2022-11-25 17:00:42,259 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2022-11-25 17:00:42,259 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 160 flow [2022-11-25 17:00:42,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 17:00:42,259 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:00:42,260 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-25 17:00:42,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:00:42,260 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-11-25 17:00:42,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:00:42,260 INFO L85 PathProgramCache]: Analyzing trace with hash -195641388, now seen corresponding path program 1 times [2022-11-25 17:00:42,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:00:42,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859564234] [2022-11-25 17:00:42,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:00:42,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:00:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:00:42,277 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:00:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:00:42,291 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:00:42,291 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:00:42,291 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-25 17:00:42,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-11-25 17:00:42,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-11-25 17:00:42,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-11-25 17:00:42,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-11-25 17:00:42,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-11-25 17:00:42,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-11-25 17:00:42,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-11-25 17:00:42,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-11-25 17:00:42,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-11-25 17:00:42,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-11-25 17:00:42,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-11-25 17:00:42,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-11-25 17:00:42,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-11-25 17:00:42,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-11-25 17:00:42,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-11-25 17:00:42,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-11-25 17:00:42,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-11-25 17:00:42,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-11-25 17:00:42,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-11-25 17:00:42,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-11-25 17:00:42,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-11-25 17:00:42,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:00:42,296 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-25 17:00:42,297 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:00:42,297 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 17:00:42,316 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:00:42,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 116 transitions, 253 flow [2022-11-25 17:00:42,337 INFO L130 PetriNetUnfolder]: 7/153 cut-off events. [2022-11-25 17:00:42,337 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 17:00:42,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 153 events. 7/153 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 372 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 115. Up to 8 conditions per place. [2022-11-25 17:00:42,338 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 116 transitions, 253 flow [2022-11-25 17:00:42,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 116 transitions, 253 flow [2022-11-25 17:00:42,340 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:00:42,340 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 116 transitions, 253 flow [2022-11-25 17:00:42,341 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 116 transitions, 253 flow [2022-11-25 17:00:42,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 116 transitions, 253 flow [2022-11-25 17:00:42,358 INFO L130 PetriNetUnfolder]: 7/153 cut-off events. [2022-11-25 17:00:42,358 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 17:00:42,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 153 events. 7/153 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 372 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 115. Up to 8 conditions per place. [2022-11-25 17:00:42,364 INFO L119 LiptonReduction]: Number of co-enabled transitions 7224 [2022-11-25 17:00:44,311 INFO L134 LiptonReduction]: Checked pairs total: 52139 [2022-11-25 17:00:44,311 INFO L136 LiptonReduction]: Total number of compositions: 96 [2022-11-25 17:00:44,318 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:00:44,320 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;@2aeae697, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:00:44,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-25 17:00:44,322 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-11-25 17:00:44,322 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:00:44,322 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:00:44,327 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:00:44,327 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-25 17:00:44,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:00:44,329 INFO L85 PathProgramCache]: Analyzing trace with hash 22451781, now seen corresponding path program 1 times [2022-11-25 17:00:44,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:00:44,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385024146] [2022-11-25 17:00:44,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:00:44,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:00:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:00:44,361 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 17:00:44,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:00:44,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385024146] [2022-11-25 17:00:44,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385024146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:00:44,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:00:44,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:00:44,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969481451] [2022-11-25 17:00:44,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:00:44,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:00:44,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:00:44,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:00:44,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:00:44,377 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 212 [2022-11-25 17:00:44,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 151 flow. Second operand has 2 states, 2 states have (on average 89.0) internal successors, (178), 2 states have internal predecessors, (178), 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 17:00:44,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:00:44,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 212 [2022-11-25 17:00:44,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:00:44,837 INFO L130 PetriNetUnfolder]: 1819/3796 cut-off events. [2022-11-25 17:00:44,838 INFO L131 PetriNetUnfolder]: For 364/364 co-relation queries the response was YES. [2022-11-25 17:00:44,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6800 conditions, 3796 events. 1819/3796 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 29204 event pairs, 1819 based on Foata normal form. 0/3364 useless extension candidates. Maximal degree in co-relation 747. Up to 2718 conditions per place. [2022-11-25 17:00:44,865 INFO L137 encePairwiseOnDemand]: 197/212 looper letters, 24 selfloop transitions, 0 changer transitions 0/50 dead transitions. [2022-11-25 17:00:44,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 169 flow [2022-11-25 17:00:44,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:00:44,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:00:44,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 213 transitions. [2022-11-25 17:00:44,867 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5023584905660378 [2022-11-25 17:00:44,867 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 213 transitions. [2022-11-25 17:00:44,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 213 transitions. [2022-11-25 17:00:44,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:00:44,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 213 transitions. [2022-11-25 17:00:44,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 106.5) internal successors, (213), 2 states have internal predecessors, (213), 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 17:00:44,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 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 17:00:44,871 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 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 17:00:44,871 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 151 flow. Second operand 2 states and 213 transitions. [2022-11-25 17:00:44,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 169 flow [2022-11-25 17:00:44,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 50 transitions, 163 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-11-25 17:00:44,874 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 115 flow [2022-11-25 17:00:44,874 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=115, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2022-11-25 17:00:44,875 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -12 predicate places. [2022-11-25 17:00:44,875 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 115 flow [2022-11-25 17:00:44,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 89.0) internal successors, (178), 2 states have internal predecessors, (178), 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 17:00:44,875 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:00:44,876 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:00:44,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:00:44,876 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-25 17:00:44,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:00:44,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1153198279, now seen corresponding path program 1 times [2022-11-25 17:00:44,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:00:44,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794380761] [2022-11-25 17:00:44,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:00:44,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:00:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:00:44,903 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 17:00:44,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:00:44,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794380761] [2022-11-25 17:00:44,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794380761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:00:44,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:00:44,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:00:44,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591171248] [2022-11-25 17:00:44,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:00:44,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:00:44,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:00:44,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:00:44,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:00:44,943 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 212 [2022-11-25 17:00:44,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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 17:00:44,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:00:44,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 212 [2022-11-25 17:00:44,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:00:45,783 INFO L130 PetriNetUnfolder]: 3717/6692 cut-off events. [2022-11-25 17:00:45,783 INFO L131 PetriNetUnfolder]: For 269/269 co-relation queries the response was YES. [2022-11-25 17:00:45,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12477 conditions, 6692 events. 3717/6692 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 50116 event pairs, 3163 based on Foata normal form. 0/5936 useless extension candidates. Maximal degree in co-relation 12471. Up to 5062 conditions per place. [2022-11-25 17:00:45,832 INFO L137 encePairwiseOnDemand]: 203/212 looper letters, 40 selfloop transitions, 8 changer transitions 0/69 dead transitions. [2022-11-25 17:00:45,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 69 transitions, 259 flow [2022-11-25 17:00:45,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:00:45,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:00:45,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2022-11-25 17:00:45,834 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4261006289308176 [2022-11-25 17:00:45,834 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2022-11-25 17:00:45,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2022-11-25 17:00:45,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:00:45,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2022-11-25 17:00:45,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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 17:00:45,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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 17:00:45,839 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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 17:00:45,839 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 115 flow. Second operand 3 states and 271 transitions. [2022-11-25 17:00:45,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 69 transitions, 259 flow [2022-11-25 17:00:45,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 69 transitions, 259 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:00:45,843 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 169 flow [2022-11-25 17:00:45,844 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2022-11-25 17:00:45,846 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -9 predicate places. [2022-11-25 17:00:45,847 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 169 flow [2022-11-25 17:00:45,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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 17:00:45,848 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:00:45,848 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:00:45,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:00:45,848 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-25 17:00:45,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:00:45,849 INFO L85 PathProgramCache]: Analyzing trace with hash 516741696, now seen corresponding path program 1 times [2022-11-25 17:00:45,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:00:45,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356417321] [2022-11-25 17:00:45,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:00:45,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:00:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:00:45,907 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 17:00:45,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:00:45,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356417321] [2022-11-25 17:00:45,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356417321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:00:45,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:00:45,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:00:45,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982886369] [2022-11-25 17:00:45,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:00:45,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:00:45,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:00:45,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:00:45,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:00:45,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 212 [2022-11-25 17:00:45,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:00:45,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:00:45,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 212 [2022-11-25 17:00:45,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:00:47,066 INFO L130 PetriNetUnfolder]: 4883/8576 cut-off events. [2022-11-25 17:00:47,066 INFO L131 PetriNetUnfolder]: For 1962/2101 co-relation queries the response was YES. [2022-11-25 17:00:47,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18504 conditions, 8576 events. 4883/8576 cut-off events. For 1962/2101 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 65239 event pairs, 3517 based on Foata normal form. 0/7656 useless extension candidates. Maximal degree in co-relation 18496. Up to 6178 conditions per place. [2022-11-25 17:00:47,152 INFO L137 encePairwiseOnDemand]: 202/212 looper letters, 48 selfloop transitions, 9 changer transitions 0/77 dead transitions. [2022-11-25 17:00:47,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 77 transitions, 345 flow [2022-11-25 17:00:47,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:00:47,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:00:47,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2022-11-25 17:00:47,155 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42924528301886794 [2022-11-25 17:00:47,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2022-11-25 17:00:47,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2022-11-25 17:00:47,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:00:47,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2022-11-25 17:00:47,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 17:00:47,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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 17:00:47,160 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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 17:00:47,160 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 169 flow. Second operand 3 states and 273 transitions. [2022-11-25 17:00:47,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 77 transitions, 345 flow [2022-11-25 17:00:47,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 77 transitions, 337 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:00:47,182 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 243 flow [2022-11-25 17:00:47,182 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2022-11-25 17:00:47,183 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -6 predicate places. [2022-11-25 17:00:47,183 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 243 flow [2022-11-25 17:00:47,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:00:47,184 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:00:47,184 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:00:47,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:00:47,185 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-25 17:00:47,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:00:47,186 INFO L85 PathProgramCache]: Analyzing trace with hash 730479516, now seen corresponding path program 1 times [2022-11-25 17:00:47,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:00:47,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941209567] [2022-11-25 17:00:47,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:00:47,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:00:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:00:47,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:00:47,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:00:47,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941209567] [2022-11-25 17:00:47,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941209567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:00:47,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:00:47,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:00:47,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957160518] [2022-11-25 17:00:47,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:00:47,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:00:47,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:00:47,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:00:47,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:00:47,291 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 212 [2022-11-25 17:00:47,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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 17:00:47,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:00:47,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 212 [2022-11-25 17:00:47,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:00:48,423 INFO L130 PetriNetUnfolder]: 5248/9319 cut-off events. [2022-11-25 17:00:48,423 INFO L131 PetriNetUnfolder]: For 5651/5979 co-relation queries the response was YES. [2022-11-25 17:00:48,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22934 conditions, 9319 events. 5248/9319 cut-off events. For 5651/5979 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 72617 event pairs, 3676 based on Foata normal form. 14/8173 useless extension candidates. Maximal degree in co-relation 22925. Up to 6981 conditions per place. [2022-11-25 17:00:48,501 INFO L137 encePairwiseOnDemand]: 203/212 looper letters, 52 selfloop transitions, 14 changer transitions 0/88 dead transitions. [2022-11-25 17:00:48,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 88 transitions, 470 flow [2022-11-25 17:00:48,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:00:48,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:00:48,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2022-11-25 17:00:48,504 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4261006289308176 [2022-11-25 17:00:48,504 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2022-11-25 17:00:48,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2022-11-25 17:00:48,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:00:48,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2022-11-25 17:00:48,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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 17:00:48,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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 17:00:48,507 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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 17:00:48,507 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 243 flow. Second operand 3 states and 271 transitions. [2022-11-25 17:00:48,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 88 transitions, 470 flow [2022-11-25 17:00:48,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 88 transitions, 424 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-11-25 17:00:48,543 INFO L231 Difference]: Finished difference. Result has 65 places, 76 transitions, 327 flow [2022-11-25 17:00:48,544 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=327, PETRI_PLACES=65, PETRI_TRANSITIONS=76} [2022-11-25 17:00:48,544 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -5 predicate places. [2022-11-25 17:00:48,544 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 76 transitions, 327 flow [2022-11-25 17:00:48,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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 17:00:48,545 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:00:48,545 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:00:48,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:00:48,545 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-25 17:00:48,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:00:48,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1627414471, now seen corresponding path program 1 times [2022-11-25 17:00:48,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:00:48,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772380282] [2022-11-25 17:00:48,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:00:48,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:00:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:00:48,572 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 17:00:48,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:00:48,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772380282] [2022-11-25 17:00:48,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772380282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:00:48,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:00:48,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:00:48,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43047233] [2022-11-25 17:00:48,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:00:48,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:00:48,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:00:48,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:00:48,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:00:48,610 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 212 [2022-11-25 17:00:48,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 76 transitions, 327 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 17:00:48,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:00:48,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 212 [2022-11-25 17:00:48,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:00:50,790 INFO L130 PetriNetUnfolder]: 10963/18039 cut-off events. [2022-11-25 17:00:50,790 INFO L131 PetriNetUnfolder]: For 17063/18112 co-relation queries the response was YES. [2022-11-25 17:00:50,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48149 conditions, 18039 events. 10963/18039 cut-off events. For 17063/18112 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 141530 event pairs, 3896 based on Foata normal form. 110/16594 useless extension candidates. Maximal degree in co-relation 48139. Up to 8297 conditions per place. [2022-11-25 17:00:50,942 INFO L137 encePairwiseOnDemand]: 197/212 looper letters, 77 selfloop transitions, 33 changer transitions 0/127 dead transitions. [2022-11-25 17:00:50,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 127 transitions, 794 flow [2022-11-25 17:00:50,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:00:50,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:00:50,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2022-11-25 17:00:50,944 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44339622641509435 [2022-11-25 17:00:50,944 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2022-11-25 17:00:50,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2022-11-25 17:00:50,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:00:50,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2022-11-25 17:00:50,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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 17:00:50,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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 17:00:50,947 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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 17:00:50,947 INFO L175 Difference]: Start difference. First operand has 65 places, 76 transitions, 327 flow. Second operand 3 states and 282 transitions. [2022-11-25 17:00:50,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 127 transitions, 794 flow [2022-11-25 17:00:50,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 127 transitions, 769 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:00:50,986 INFO L231 Difference]: Finished difference. Result has 68 places, 108 transitions, 695 flow [2022-11-25 17:00:50,986 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=695, PETRI_PLACES=68, PETRI_TRANSITIONS=108} [2022-11-25 17:00:50,987 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -2 predicate places. [2022-11-25 17:00:50,987 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 108 transitions, 695 flow [2022-11-25 17:00:50,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 17:00:50,987 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:00:50,987 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:00:50,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:00:50,988 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-25 17:00:50,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:00:50,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1288436067, now seen corresponding path program 1 times [2022-11-25 17:00:50,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:00:50,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480733279] [2022-11-25 17:00:50,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:00:50,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:00:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:00:51,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:00:51,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:00:51,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480733279] [2022-11-25 17:00:51,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480733279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:00:51,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:00:51,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:00:51,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884382660] [2022-11-25 17:00:51,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:00:51,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:00:51,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:00:51,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:00:51,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:00:51,073 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 212 [2022-11-25 17:00:51,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 108 transitions, 695 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 17:00:51,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:00:51,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 212 [2022-11-25 17:00:51,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:00:51,164 INFO L130 PetriNetUnfolder]: 141/557 cut-off events. [2022-11-25 17:00:51,164 INFO L131 PetriNetUnfolder]: For 873/873 co-relation queries the response was YES. [2022-11-25 17:00:51,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1488 conditions, 557 events. 141/557 cut-off events. For 873/873 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3293 event pairs, 17 based on Foata normal form. 148/680 useless extension candidates. Maximal degree in co-relation 1477. Up to 292 conditions per place. [2022-11-25 17:00:51,167 INFO L137 encePairwiseOnDemand]: 206/212 looper letters, 23 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2022-11-25 17:00:51,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 50 transitions, 291 flow [2022-11-25 17:00:51,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:00:51,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:00:51,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2022-11-25 17:00:51,169 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4528301886792453 [2022-11-25 17:00:51,169 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2022-11-25 17:00:51,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2022-11-25 17:00:51,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:00:51,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2022-11-25 17:00:51,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 17:00:51,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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 17:00:51,172 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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 17:00:51,172 INFO L175 Difference]: Start difference. First operand has 68 places, 108 transitions, 695 flow. Second operand 3 states and 288 transitions. [2022-11-25 17:00:51,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 50 transitions, 291 flow [2022-11-25 17:00:51,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 50 transitions, 201 flow, removed 31 selfloop flow, removed 8 redundant places. [2022-11-25 17:00:51,176 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 139 flow [2022-11-25 17:00:51,177 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2022-11-25 17:00:51,178 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -14 predicate places. [2022-11-25 17:00:51,179 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 139 flow [2022-11-25 17:00:51,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 17:00:51,179 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:00:51,179 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:00:51,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:00:51,180 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-25 17:00:51,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:00:51,180 INFO L85 PathProgramCache]: Analyzing trace with hash -882545481, now seen corresponding path program 1 times [2022-11-25 17:00:51,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:00:51,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571128278] [2022-11-25 17:00:51,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:00:51,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:00:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:00:51,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:00:51,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:00:51,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571128278] [2022-11-25 17:00:51,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571128278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:00:51,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:00:51,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:00:51,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987058092] [2022-11-25 17:00:51,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:00:51,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:00:51,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:00:51,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:00:51,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:00:51,252 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 212 [2022-11-25 17:00:51,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:00:51,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:00:51,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 212 [2022-11-25 17:00:51,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:00:51,475 INFO L130 PetriNetUnfolder]: 181/606 cut-off events. [2022-11-25 17:00:51,476 INFO L131 PetriNetUnfolder]: For 197/197 co-relation queries the response was YES. [2022-11-25 17:00:51,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1337 conditions, 606 events. 181/606 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3524 event pairs, 155 based on Foata normal form. 0/590 useless extension candidates. Maximal degree in co-relation 1329. Up to 410 conditions per place. [2022-11-25 17:00:51,478 INFO L137 encePairwiseOnDemand]: 209/212 looper letters, 32 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2022-11-25 17:00:51,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 48 transitions, 214 flow [2022-11-25 17:00:51,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:00:51,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:00:51,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2022-11-25 17:00:51,480 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39937106918238996 [2022-11-25 17:00:51,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2022-11-25 17:00:51,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2022-11-25 17:00:51,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:00:51,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2022-11-25 17:00:51,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 17:00:51,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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 17:00:51,483 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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 17:00:51,483 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 139 flow. Second operand 3 states and 254 transitions. [2022-11-25 17:00:51,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 48 transitions, 214 flow [2022-11-25 17:00:51,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 48 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:00:51,485 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 135 flow [2022-11-25 17:00:51,486 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2022-11-25 17:00:51,487 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -14 predicate places. [2022-11-25 17:00:51,487 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 135 flow [2022-11-25 17:00:51,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:00:51,487 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:00:51,487 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-25 17:00:51,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:00:51,488 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-25 17:00:51,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:00:51,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1675425520, now seen corresponding path program 1 times [2022-11-25 17:00:51,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:00:51,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526162101] [2022-11-25 17:00:51,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:00:51,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:00:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:00:51,515 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:00:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:00:51,534 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:00:51,534 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:00:51,535 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2022-11-25 17:00:51,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2022-11-25 17:00:51,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2022-11-25 17:00:51,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2022-11-25 17:00:51,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2022-11-25 17:00:51,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2022-11-25 17:00:51,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2022-11-25 17:00:51,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2022-11-25 17:00:51,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2022-11-25 17:00:51,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2022-11-25 17:00:51,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2022-11-25 17:00:51,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2022-11-25 17:00:51,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2022-11-25 17:00:51,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2022-11-25 17:00:51,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2022-11-25 17:00:51,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2022-11-25 17:00:51,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2022-11-25 17:00:51,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2022-11-25 17:00:51,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2022-11-25 17:00:51,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2022-11-25 17:00:51,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2022-11-25 17:00:51,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2022-11-25 17:00:51,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2022-11-25 17:00:51,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2022-11-25 17:00:51,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2022-11-25 17:00:51,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2022-11-25 17:00:51,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2022-11-25 17:00:51,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2022-11-25 17:00:51,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2022-11-25 17:00:51,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 17:00:51,544 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:00:51,545 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:00:51,545 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-25 17:00:51,593 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:00:51,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 145 transitions, 322 flow [2022-11-25 17:00:51,637 INFO L130 PetriNetUnfolder]: 9/195 cut-off events. [2022-11-25 17:00:51,638 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-25 17:00:51,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 195 events. 9/195 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 537 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 161. Up to 10 conditions per place. [2022-11-25 17:00:51,639 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 145 transitions, 322 flow [2022-11-25 17:00:51,641 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 145 transitions, 322 flow [2022-11-25 17:00:51,642 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:00:51,642 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 145 transitions, 322 flow [2022-11-25 17:00:51,642 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 145 transitions, 322 flow [2022-11-25 17:00:51,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 145 transitions, 322 flow [2022-11-25 17:00:51,669 INFO L130 PetriNetUnfolder]: 9/195 cut-off events. [2022-11-25 17:00:51,669 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-25 17:00:51,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 195 events. 9/195 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 537 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 161. Up to 10 conditions per place. [2022-11-25 17:00:51,679 INFO L119 LiptonReduction]: Number of co-enabled transitions 12880 [2022-11-25 17:00:54,746 INFO L134 LiptonReduction]: Checked pairs total: 99317 [2022-11-25 17:00:54,746 INFO L136 LiptonReduction]: Total number of compositions: 140 [2022-11-25 17:00:54,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:00:54,750 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;@2aeae697, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:00:54,750 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-11-25 17:00:54,753 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-11-25 17:00:54,753 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:00:54,753 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:00:54,753 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:00:54,753 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-25 17:00:54,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:00:54,754 INFO L85 PathProgramCache]: Analyzing trace with hash 31424584, now seen corresponding path program 1 times [2022-11-25 17:00:54,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:00:54,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723699572] [2022-11-25 17:00:54,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:00:54,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:00:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:00:54,768 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 17:00:54,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:00:54,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723699572] [2022-11-25 17:00:54,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723699572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:00:54,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:00:54,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:00:54,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41083856] [2022-11-25 17:00:54,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:00:54,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:00:54,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:00:54,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:00:54,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:00:54,771 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 285 [2022-11-25 17:00:54,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 83 transitions, 198 flow. Second operand has 2 states, 2 states have (on average 109.0) internal successors, (218), 2 states have internal predecessors, (218), 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 17:00:54,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:00:54,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 285 [2022-11-25 17:00:54,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:00:59,200 INFO L130 PetriNetUnfolder]: 23951/41095 cut-off events. [2022-11-25 17:00:59,200 INFO L131 PetriNetUnfolder]: For 5773/5773 co-relation queries the response was YES. [2022-11-25 17:00:59,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76456 conditions, 41095 events. 23951/41095 cut-off events. For 5773/5773 co-relation queries the response was YES. Maximal size of possible extension queue 1451. Compared 365864 event pairs, 23951 based on Foata normal form. 0/37969 useless extension candidates. Maximal degree in co-relation 7770. Up to 32162 conditions per place. [2022-11-25 17:00:59,501 INFO L137 encePairwiseOnDemand]: 267/285 looper letters, 33 selfloop transitions, 0 changer transitions 0/65 dead transitions. [2022-11-25 17:00:59,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 65 transitions, 228 flow [2022-11-25 17:00:59,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:00:59,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:00:59,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 265 transitions. [2022-11-25 17:00:59,504 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2022-11-25 17:00:59,504 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 265 transitions. [2022-11-25 17:00:59,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 265 transitions. [2022-11-25 17:00:59,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:00:59,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 265 transitions. [2022-11-25 17:00:59,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 132.5) internal successors, (265), 2 states have internal predecessors, (265), 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 17:00:59,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 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 17:00:59,508 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 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 17:00:59,508 INFO L175 Difference]: Start difference. First operand has 91 places, 83 transitions, 198 flow. Second operand 2 states and 265 transitions. [2022-11-25 17:00:59,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 65 transitions, 228 flow [2022-11-25 17:00:59,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 65 transitions, 216 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-11-25 17:00:59,515 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 150 flow [2022-11-25 17:00:59,515 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=150, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2022-11-25 17:00:59,516 INFO L288 CegarLoopForPetriNet]: 91 programPoint places, -16 predicate places. [2022-11-25 17:00:59,516 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 150 flow [2022-11-25 17:00:59,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 109.0) internal successors, (218), 2 states have internal predecessors, (218), 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 17:00:59,516 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:00:59,517 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:00:59,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 17:00:59,517 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-25 17:00:59,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:00:59,518 INFO L85 PathProgramCache]: Analyzing trace with hash -132218094, now seen corresponding path program 1 times [2022-11-25 17:00:59,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:00:59,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030362574] [2022-11-25 17:00:59,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:00:59,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:00:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:00:59,546 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 17:00:59,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:00:59,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030362574] [2022-11-25 17:00:59,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030362574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:00:59,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:00:59,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:00:59,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840376323] [2022-11-25 17:00:59,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:00:59,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:00:59,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:00:59,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:00:59,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:00:59,604 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 285 [2022-11-25 17:00:59,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 17:00:59,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:00:59,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 285 [2022-11-25 17:00:59,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:01:05,748 INFO L130 PetriNetUnfolder]: 48081/74367 cut-off events. [2022-11-25 17:01:05,748 INFO L131 PetriNetUnfolder]: For 2594/2594 co-relation queries the response was YES. [2022-11-25 17:01:05,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141307 conditions, 74367 events. 48081/74367 cut-off events. For 2594/2594 co-relation queries the response was YES. Maximal size of possible extension queue 2455. Compared 615056 event pairs, 41569 based on Foata normal form. 0/68529 useless extension candidates. Maximal degree in co-relation 141300. Up to 59562 conditions per place. [2022-11-25 17:01:06,223 INFO L137 encePairwiseOnDemand]: 273/285 looper letters, 55 selfloop transitions, 11 changer transitions 0/93 dead transitions. [2022-11-25 17:01:06,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 93 transitions, 353 flow [2022-11-25 17:01:06,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:01:06,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:01:06,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2022-11-25 17:01:06,226 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39766081871345027 [2022-11-25 17:01:06,226 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2022-11-25 17:01:06,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2022-11-25 17:01:06,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:01:06,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2022-11-25 17:01:06,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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 17:01:06,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:06,230 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:06,230 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 150 flow. Second operand 3 states and 340 transitions. [2022-11-25 17:01:06,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 93 transitions, 353 flow [2022-11-25 17:01:06,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 93 transitions, 353 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:01:06,236 INFO L231 Difference]: Finished difference. Result has 78 places, 75 transitions, 225 flow [2022-11-25 17:01:06,236 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=225, PETRI_PLACES=78, PETRI_TRANSITIONS=75} [2022-11-25 17:01:06,238 INFO L288 CegarLoopForPetriNet]: 91 programPoint places, -13 predicate places. [2022-11-25 17:01:06,239 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 75 transitions, 225 flow [2022-11-25 17:01:06,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 17:01:06,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:01:06,239 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:01:06,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 17:01:06,240 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-25 17:01:06,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:06,240 INFO L85 PathProgramCache]: Analyzing trace with hash -420312451, now seen corresponding path program 1 times [2022-11-25 17:01:06,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:06,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987439876] [2022-11-25 17:01:06,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:06,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:06,274 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 17:01:06,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:01:06,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987439876] [2022-11-25 17:01:06,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987439876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:01:06,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:01:06,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:01:06,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145221162] [2022-11-25 17:01:06,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:01:06,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:01:06,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:01:06,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:01:06,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:01:06,332 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 285 [2022-11-25 17:01:06,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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 17:01:06,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:01:06,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 285 [2022-11-25 17:01:06,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:01:14,205 INFO L130 PetriNetUnfolder]: 64454/97784 cut-off events. [2022-11-25 17:01:14,205 INFO L131 PetriNetUnfolder]: For 22281/23184 co-relation queries the response was YES. [2022-11-25 17:01:14,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217242 conditions, 97784 events. 64454/97784 cut-off events. For 22281/23184 co-relation queries the response was YES. Maximal size of possible extension queue 3255. Compared 821193 event pairs, 48320 based on Foata normal form. 0/90199 useless extension candidates. Maximal degree in co-relation 217233. Up to 75081 conditions per place. [2022-11-25 17:01:15,011 INFO L137 encePairwiseOnDemand]: 272/285 looper letters, 66 selfloop transitions, 12 changer transitions 0/104 dead transitions. [2022-11-25 17:01:15,012 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 104 transitions, 472 flow [2022-11-25 17:01:15,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:01:15,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:01:15,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2022-11-25 17:01:15,014 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4 [2022-11-25 17:01:15,014 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2022-11-25 17:01:15,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2022-11-25 17:01:15,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:01:15,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2022-11-25 17:01:15,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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 17:01:15,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:15,019 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:15,019 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 225 flow. Second operand 3 states and 342 transitions. [2022-11-25 17:01:15,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 104 transitions, 472 flow [2022-11-25 17:01:15,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 104 transitions, 461 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:01:15,034 INFO L231 Difference]: Finished difference. Result has 81 places, 86 transitions, 326 flow [2022-11-25 17:01:15,034 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=326, PETRI_PLACES=81, PETRI_TRANSITIONS=86} [2022-11-25 17:01:15,034 INFO L288 CegarLoopForPetriNet]: 91 programPoint places, -10 predicate places. [2022-11-25 17:01:15,035 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 86 transitions, 326 flow [2022-11-25 17:01:15,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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 17:01:15,035 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:01:15,035 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:01:15,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 17:01:15,036 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-25 17:01:15,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:15,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1451409289, now seen corresponding path program 1 times [2022-11-25 17:01:15,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:15,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869171571] [2022-11-25 17:01:15,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:15,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:15,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:01:15,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:01:15,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869171571] [2022-11-25 17:01:15,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869171571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:01:15,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:01:15,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:01:15,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238545124] [2022-11-25 17:01:15,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:01:15,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:01:15,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:01:15,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:01:15,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:01:15,123 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 285 [2022-11-25 17:01:15,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 86 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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 17:01:15,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:01:15,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 285 [2022-11-25 17:01:15,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:01:26,021 INFO L130 PetriNetUnfolder]: 84113/127452 cut-off events. [2022-11-25 17:01:26,021 INFO L131 PetriNetUnfolder]: For 82652/84941 co-relation queries the response was YES. [2022-11-25 17:01:26,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324975 conditions, 127452 events. 84113/127452 cut-off events. For 82652/84941 co-relation queries the response was YES. Maximal size of possible extension queue 4349. Compared 1098215 event pairs, 56088 based on Foata normal form. 100/115644 useless extension candidates. Maximal degree in co-relation 324965. Up to 96452 conditions per place. [2022-11-25 17:01:26,940 INFO L137 encePairwiseOnDemand]: 272/285 looper letters, 74 selfloop transitions, 27 changer transitions 0/128 dead transitions. [2022-11-25 17:01:26,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 128 transitions, 710 flow [2022-11-25 17:01:26,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:01:26,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:01:26,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 341 transitions. [2022-11-25 17:01:26,943 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39883040935672515 [2022-11-25 17:01:26,944 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 341 transitions. [2022-11-25 17:01:26,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 341 transitions. [2022-11-25 17:01:26,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:01:26,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 341 transitions. [2022-11-25 17:01:26,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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 17:01:26,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:26,949 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:26,949 INFO L175 Difference]: Start difference. First operand has 81 places, 86 transitions, 326 flow. Second operand 3 states and 341 transitions. [2022-11-25 17:01:26,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 128 transitions, 710 flow