./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12c28f8-76d6-4c4c-aef9-181034cfe3a7/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12c28f8-76d6-4c4c-aef9-181034cfe3a7/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12c28f8-76d6-4c4c-aef9-181034cfe3a7/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12c28f8-76d6-4c4c-aef9-181034cfe3a7/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12c28f8-76d6-4c4c-aef9-181034cfe3a7/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12c28f8-76d6-4c4c-aef9-181034cfe3a7/bin/uautomizer-ug76WZFUDN --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 b2b2bb654bf56c4e17e833d277e8505998c0901a0fe529242a0e0db923034741 --- 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-6b4ec56 [2022-11-20 12:03:58,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:03:58,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:03:58,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:03:58,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:03:58,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:03:58,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:03:58,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:03:58,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:03:58,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:03:58,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:03:58,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:03:58,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:03:58,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:03:58,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:03:58,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:03:58,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:03:58,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:03:58,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:03:58,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:03:58,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:03:58,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:03:58,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:03:58,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:03:58,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:03:58,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:03:58,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:03:58,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:03:58,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:03:58,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:03:58,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:03:58,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:03:58,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:03:58,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:03:58,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:03:58,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:03:58,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:03:58,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:03:58,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:03:58,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:03:58,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:03:58,977 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12c28f8-76d6-4c4c-aef9-181034cfe3a7/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-20 12:03:59,030 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:03:59,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:03:59,036 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:03:59,036 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:03:59,037 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:03:59,037 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:03:59,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:03:59,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:03:59,039 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:03:59,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:03:59,041 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:03:59,041 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:03:59,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:03:59,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:03:59,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:03:59,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:03:59,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:03:59,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:03:59,043 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 12:03:59,043 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:03:59,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:03:59,043 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:03:59,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:03:59,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:03:59,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:03:59,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:03:59,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:03:59,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:03:59,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:03:59,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:03:59,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:03:59,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:03:59,047 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:03:59,047 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:03:59,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:03:59,048 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12c28f8-76d6-4c4c-aef9-181034cfe3a7/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12c28f8-76d6-4c4c-aef9-181034cfe3a7/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2b2bb654bf56c4e17e833d277e8505998c0901a0fe529242a0e0db923034741 [2022-11-20 12:03:59,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:03:59,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:03:59,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:03:59,455 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:03:59,456 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:03:59,457 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12c28f8-76d6-4c4c-aef9-181034cfe3a7/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2022-11-20 12:04:03,059 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:04:03,376 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:04:03,377 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12c28f8-76d6-4c4c-aef9-181034cfe3a7/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2022-11-20 12:04:03,386 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12c28f8-76d6-4c4c-aef9-181034cfe3a7/bin/uautomizer-ug76WZFUDN/data/f0812d8dd/67aa3d97f3ff4474b1f0ff77f1aa299b/FLAG77454a380 [2022-11-20 12:04:03,407 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12c28f8-76d6-4c4c-aef9-181034cfe3a7/bin/uautomizer-ug76WZFUDN/data/f0812d8dd/67aa3d97f3ff4474b1f0ff77f1aa299b [2022-11-20 12:04:03,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:04:03,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:04:03,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:04:03,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:04:03,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:04:03,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:04:03" (1/1) ... [2022-11-20 12:04:03,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1773462e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:03, skipping insertion in model container [2022-11-20 12:04:03,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:04:03" (1/1) ... [2022-11-20 12:04:03,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:04:03,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:04:03,798 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_b12c28f8-76d6-4c4c-aef9-181034cfe3a7/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c[2975,2988] [2022-11-20 12:04:03,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:04:03,829 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:04:03,921 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_b12c28f8-76d6-4c4c-aef9-181034cfe3a7/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c[2975,2988] [2022-11-20 12:04:03,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:04:03,952 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:04:03,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:03 WrapperNode [2022-11-20 12:04:03,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:04:03,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:04:03,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:04:03,955 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:04:03,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:03" (1/1) ... [2022-11-20 12:04:03,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:03" (1/1) ... [2022-11-20 12:04:04,062 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 483 [2022-11-20 12:04:04,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:04:04,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:04:04,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:04:04,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:04:04,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:03" (1/1) ... [2022-11-20 12:04:04,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:03" (1/1) ... [2022-11-20 12:04:04,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:03" (1/1) ... [2022-11-20 12:04:04,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:03" (1/1) ... [2022-11-20 12:04:04,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:03" (1/1) ... [2022-11-20 12:04:04,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:03" (1/1) ... [2022-11-20 12:04:04,170 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:03" (1/1) ... [2022-11-20 12:04:04,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:03" (1/1) ... [2022-11-20 12:04:04,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:04:04,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:04:04,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:04:04,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:04:04,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:03" (1/1) ... [2022-11-20 12:04:04,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:04:04,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12c28f8-76d6-4c4c-aef9-181034cfe3a7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:04,236 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12c28f8-76d6-4c4c-aef9-181034cfe3a7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:04:04,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12c28f8-76d6-4c4c-aef9-181034cfe3a7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:04:04,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:04:04,305 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:04:04,306 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:04:04,306 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:04:04,306 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:04:04,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:04:04,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:04:04,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:04:04,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:04:04,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:04:04,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:04:04,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:04:04,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:04:04,313 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:04:04,466 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:04:04,468 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:04:05,709 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:04:05,727 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:04:05,727 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 12:04:05,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:04:05 BoogieIcfgContainer [2022-11-20 12:04:05,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:04:05,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:04:05,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:04:05,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:04:05,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:04:03" (1/3) ... [2022-11-20 12:04:05,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3142339c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:04:05, skipping insertion in model container [2022-11-20 12:04:05,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:03" (2/3) ... [2022-11-20 12:04:05,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3142339c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:04:05, skipping insertion in model container [2022-11-20 12:04:05,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:04:05" (3/3) ... [2022-11-20 12:04:05,743 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.c [2022-11-20 12:04:05,754 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:04:05,768 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:04:05,768 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 86 error locations. [2022-11-20 12:04:05,769 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:04:05,992 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 12:04:06,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 616 places, 643 transitions, 1302 flow [2022-11-20 12:04:06,410 INFO L130 PetriNetUnfolder]: 34/641 cut-off events. [2022-11-20 12:04:06,410 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 12:04:06,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 641 events. 34/641 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1905 event pairs, 0 based on Foata normal form. 0/521 useless extension candidates. Maximal degree in co-relation 507. Up to 2 conditions per place. [2022-11-20 12:04:06,431 INFO L82 GeneralOperation]: Start removeDead. Operand has 616 places, 643 transitions, 1302 flow [2022-11-20 12:04:06,452 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 597 places, 623 transitions, 1258 flow [2022-11-20 12:04:06,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:04:06,489 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;@6ed37f94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:04:06,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 164 error locations. [2022-11-20 12:04:06,495 INFO L130 PetriNetUnfolder]: 0/22 cut-off events. [2022-11-20 12:04:06,495 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:04:06,495 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:06,497 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:06,498 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 160 more)] === [2022-11-20 12:04:06,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:06,509 INFO L85 PathProgramCache]: Analyzing trace with hash 670203470, now seen corresponding path program 1 times [2022-11-20 12:04:06,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:06,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377426367] [2022-11-20 12:04:06,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:06,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:06,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:06,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:06,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377426367] [2022-11-20 12:04:06,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377426367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:06,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:06,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:04:06,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291852816] [2022-11-20 12:04:06,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:06,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:04:06,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:06,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:04:06,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:04:06,920 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 643 [2022-11-20 12:04:06,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 623 transitions, 1258 flow. Second operand has 3 states, 3 states have (on average 598.3333333333334) internal successors, (1795), 3 states have internal predecessors, (1795), 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) [2022-11-20 12:04:06,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:06,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 643 [2022-11-20 12:04:06,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:07,796 INFO L130 PetriNetUnfolder]: 154/2488 cut-off events. [2022-11-20 12:04:07,796 INFO L131 PetriNetUnfolder]: For 56/101 co-relation queries the response was YES. [2022-11-20 12:04:07,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 2488 events. 154/2488 cut-off events. For 56/101 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 17544 event pairs, 63 based on Foata normal form. 57/2009 useless extension candidates. Maximal degree in co-relation 2497. Up to 172 conditions per place. [2022-11-20 12:04:07,825 INFO L137 encePairwiseOnDemand]: 624/643 looper letters, 25 selfloop transitions, 2 changer transitions 3/606 dead transitions. [2022-11-20 12:04:07,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 606 transitions, 1278 flow [2022-11-20 12:04:07,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:04:07,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:04:07,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1835 transitions. [2022-11-20 12:04:07,857 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9512700881285641 [2022-11-20 12:04:07,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1835 transitions. [2022-11-20 12:04:07,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1835 transitions. [2022-11-20 12:04:07,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:07,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1835 transitions. [2022-11-20 12:04:07,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 611.6666666666666) internal successors, (1835), 3 states have internal predecessors, (1835), 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) [2022-11-20 12:04:07,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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) [2022-11-20 12:04:07,893 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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) [2022-11-20 12:04:07,895 INFO L175 Difference]: Start difference. First operand has 597 places, 623 transitions, 1258 flow. Second operand 3 states and 1835 transitions. [2022-11-20 12:04:07,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 606 transitions, 1278 flow [2022-11-20 12:04:07,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 606 transitions, 1270 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:04:07,926 INFO L231 Difference]: Finished difference. Result has 594 places, 603 transitions, 1214 flow [2022-11-20 12:04:07,929 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1214, PETRI_PLACES=594, PETRI_TRANSITIONS=603} [2022-11-20 12:04:07,936 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -3 predicate places. [2022-11-20 12:04:07,938 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 603 transitions, 1214 flow [2022-11-20 12:04:07,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 598.3333333333334) internal successors, (1795), 3 states have internal predecessors, (1795), 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) [2022-11-20 12:04:07,940 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:07,940 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:07,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:04:07,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 160 more)] === [2022-11-20 12:04:07,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:07,942 INFO L85 PathProgramCache]: Analyzing trace with hash -633026369, now seen corresponding path program 1 times [2022-11-20 12:04:07,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:07,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81105029] [2022-11-20 12:04:07,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:07,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:08,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:08,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81105029] [2022-11-20 12:04:08,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81105029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:08,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:08,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:04:08,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241274726] [2022-11-20 12:04:08,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:08,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:04:08,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:08,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:04:08,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:04:08,092 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 579 out of 643 [2022-11-20 12:04:08,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 603 transitions, 1214 flow. Second operand has 3 states, 3 states have (on average 580.3333333333334) internal successors, (1741), 3 states have internal predecessors, (1741), 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) [2022-11-20 12:04:08,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:08,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 579 of 643 [2022-11-20 12:04:08,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:09,109 INFO L130 PetriNetUnfolder]: 275/3054 cut-off events. [2022-11-20 12:04:09,109 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-11-20 12:04:09,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3415 conditions, 3054 events. 275/3054 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 21901 event pairs, 111 based on Foata normal form. 0/2380 useless extension candidates. Maximal degree in co-relation 3384. Up to 350 conditions per place. [2022-11-20 12:04:09,170 INFO L137 encePairwiseOnDemand]: 640/643 looper letters, 43 selfloop transitions, 2 changer transitions 0/602 dead transitions. [2022-11-20 12:04:09,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 602 transitions, 1302 flow [2022-11-20 12:04:09,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:04:09,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:04:09,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1783 transitions. [2022-11-20 12:04:09,179 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9243131156039399 [2022-11-20 12:04:09,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1783 transitions. [2022-11-20 12:04:09,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1783 transitions. [2022-11-20 12:04:09,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:09,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1783 transitions. [2022-11-20 12:04:09,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 594.3333333333334) internal successors, (1783), 3 states have internal predecessors, (1783), 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) [2022-11-20 12:04:09,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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) [2022-11-20 12:04:09,196 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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) [2022-11-20 12:04:09,197 INFO L175 Difference]: Start difference. First operand has 594 places, 603 transitions, 1214 flow. Second operand 3 states and 1783 transitions. [2022-11-20 12:04:09,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 602 transitions, 1302 flow [2022-11-20 12:04:09,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 590 places, 602 transitions, 1298 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:04:09,214 INFO L231 Difference]: Finished difference. Result has 590 places, 602 transitions, 1212 flow [2022-11-20 12:04:09,215 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=1208, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1212, PETRI_PLACES=590, PETRI_TRANSITIONS=602} [2022-11-20 12:04:09,216 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -7 predicate places. [2022-11-20 12:04:09,217 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 602 transitions, 1212 flow [2022-11-20 12:04:09,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 580.3333333333334) internal successors, (1741), 3 states have internal predecessors, (1741), 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) [2022-11-20 12:04:09,219 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:09,220 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:09,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:04:09,221 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 160 more)] === [2022-11-20 12:04:09,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:09,222 INFO L85 PathProgramCache]: Analyzing trace with hash 660505903, now seen corresponding path program 1 times [2022-11-20 12:04:09,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:09,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124067195] [2022-11-20 12:04:09,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:09,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:09,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:09,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:09,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124067195] [2022-11-20 12:04:09,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124067195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:09,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:09,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:04:09,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154040472] [2022-11-20 12:04:09,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:09,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:04:09,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:09,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:04:09,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:04:09,351 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 582 out of 643 [2022-11-20 12:04:09,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 602 transitions, 1212 flow. Second operand has 3 states, 3 states have (on average 583.3333333333334) internal successors, (1750), 3 states have internal predecessors, (1750), 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) [2022-11-20 12:04:09,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:09,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 582 of 643 [2022-11-20 12:04:09,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:10,127 INFO L130 PetriNetUnfolder]: 180/2509 cut-off events. [2022-11-20 12:04:10,127 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2022-11-20 12:04:10,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2717 conditions, 2509 events. 180/2509 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 16912 event pairs, 56 based on Foata normal form. 0/2020 useless extension candidates. Maximal degree in co-relation 2678. Up to 197 conditions per place. [2022-11-20 12:04:10,163 INFO L137 encePairwiseOnDemand]: 630/643 looper letters, 29 selfloop transitions, 1 changer transitions 0/590 dead transitions. [2022-11-20 12:04:10,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 590 transitions, 1248 flow [2022-11-20 12:04:10,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:04:10,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:04:10,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1788 transitions. [2022-11-20 12:04:10,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.926905132192846 [2022-11-20 12:04:10,172 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1788 transitions. [2022-11-20 12:04:10,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1788 transitions. [2022-11-20 12:04:10,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:10,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1788 transitions. [2022-11-20 12:04:10,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 596.0) internal successors, (1788), 3 states have internal predecessors, (1788), 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) [2022-11-20 12:04:10,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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) [2022-11-20 12:04:10,191 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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) [2022-11-20 12:04:10,191 INFO L175 Difference]: Start difference. First operand has 590 places, 602 transitions, 1212 flow. Second operand 3 states and 1788 transitions. [2022-11-20 12:04:10,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 590 transitions, 1248 flow [2022-11-20 12:04:10,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 590 transitions, 1244 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:04:10,210 INFO L231 Difference]: Finished difference. Result has 578 places, 590 transitions, 1186 flow [2022-11-20 12:04:10,212 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=1184, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1186, PETRI_PLACES=578, PETRI_TRANSITIONS=590} [2022-11-20 12:04:10,215 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -19 predicate places. [2022-11-20 12:04:10,215 INFO L495 AbstractCegarLoop]: Abstraction has has 578 places, 590 transitions, 1186 flow [2022-11-20 12:04:10,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 583.3333333333334) internal successors, (1750), 3 states have internal predecessors, (1750), 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) [2022-11-20 12:04:10,217 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:10,217 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:10,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:04:10,218 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 160 more)] === [2022-11-20 12:04:10,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:10,219 INFO L85 PathProgramCache]: Analyzing trace with hash 746786877, now seen corresponding path program 1 times [2022-11-20 12:04:10,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:10,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412732690] [2022-11-20 12:04:10,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:10,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:10,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:10,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:10,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412732690] [2022-11-20 12:04:10,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412732690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:10,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:10,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:04:10,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332737657] [2022-11-20 12:04:10,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:10,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:04:10,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:10,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:04:10,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:04:10,384 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 585 out of 643 [2022-11-20 12:04:10,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 590 transitions, 1186 flow. Second operand has 3 states, 3 states have (on average 586.3333333333334) internal successors, (1759), 3 states have internal predecessors, (1759), 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) [2022-11-20 12:04:10,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:10,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 585 of 643 [2022-11-20 12:04:10,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:11,144 INFO L130 PetriNetUnfolder]: 259/2763 cut-off events. [2022-11-20 12:04:11,145 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-11-20 12:04:11,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3105 conditions, 2763 events. 259/2763 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 19440 event pairs, 111 based on Foata normal form. 0/2213 useless extension candidates. Maximal degree in co-relation 3067. Up to 332 conditions per place. [2022-11-20 12:04:11,186 INFO L137 encePairwiseOnDemand]: 640/643 looper letters, 37 selfloop transitions, 2 changer transitions 0/589 dead transitions. [2022-11-20 12:04:11,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 589 transitions, 1262 flow [2022-11-20 12:04:11,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:04:11,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:04:11,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1795 transitions. [2022-11-20 12:04:11,193 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9305339554173147 [2022-11-20 12:04:11,193 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1795 transitions. [2022-11-20 12:04:11,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1795 transitions. [2022-11-20 12:04:11,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:11,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1795 transitions. [2022-11-20 12:04:11,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 598.3333333333334) internal successors, (1795), 3 states have internal predecessors, (1795), 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) [2022-11-20 12:04:11,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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) [2022-11-20 12:04:11,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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) [2022-11-20 12:04:11,211 INFO L175 Difference]: Start difference. First operand has 578 places, 590 transitions, 1186 flow. Second operand 3 states and 1795 transitions. [2022-11-20 12:04:11,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 589 transitions, 1262 flow [2022-11-20 12:04:11,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 589 transitions, 1261 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:04:11,228 INFO L231 Difference]: Finished difference. Result has 578 places, 589 transitions, 1187 flow [2022-11-20 12:04:11,230 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1187, PETRI_PLACES=578, PETRI_TRANSITIONS=589} [2022-11-20 12:04:11,231 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -19 predicate places. [2022-11-20 12:04:11,231 INFO L495 AbstractCegarLoop]: Abstraction has has 578 places, 589 transitions, 1187 flow [2022-11-20 12:04:11,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 586.3333333333334) internal successors, (1759), 3 states have internal predecessors, (1759), 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) [2022-11-20 12:04:11,233 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:11,234 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:11,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:04:11,234 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 160 more)] === [2022-11-20 12:04:11,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:11,235 INFO L85 PathProgramCache]: Analyzing trace with hash 203055823, now seen corresponding path program 1 times [2022-11-20 12:04:11,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:11,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751742817] [2022-11-20 12:04:11,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:11,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:12,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:12,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:12,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751742817] [2022-11-20 12:04:12,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751742817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:12,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:12,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:04:12,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238488232] [2022-11-20 12:04:12,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:12,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:04:12,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:12,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:04:12,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:04:12,070 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 643 [2022-11-20 12:04:12,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 589 transitions, 1187 flow. Second operand has 6 states, 6 states have (on average 533.8333333333334) internal successors, (3203), 6 states have internal predecessors, (3203), 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) [2022-11-20 12:04:12,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:12,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 643 [2022-11-20 12:04:12,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:18,736 INFO L130 PetriNetUnfolder]: 6442/30929 cut-off events. [2022-11-20 12:04:18,737 INFO L131 PetriNetUnfolder]: For 105/105 co-relation queries the response was YES. [2022-11-20 12:04:18,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39714 conditions, 30929 events. 6442/30929 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 367206 event pairs, 4956 based on Foata normal form. 0/24641 useless extension candidates. Maximal degree in co-relation 39677. Up to 8767 conditions per place. [2022-11-20 12:04:19,066 INFO L137 encePairwiseOnDemand]: 637/643 looper letters, 87 selfloop transitions, 5 changer transitions 0/588 dead transitions. [2022-11-20 12:04:19,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 588 transitions, 1369 flow [2022-11-20 12:04:19,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:04:19,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:04:19,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3285 transitions. [2022-11-20 12:04:19,074 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8514774494556765 [2022-11-20 12:04:19,075 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3285 transitions. [2022-11-20 12:04:19,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3285 transitions. [2022-11-20 12:04:19,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:19,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3285 transitions. [2022-11-20 12:04:19,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 547.5) internal successors, (3285), 6 states have internal predecessors, (3285), 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) [2022-11-20 12:04:19,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 643.0) internal successors, (4501), 7 states have internal predecessors, (4501), 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) [2022-11-20 12:04:19,101 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 643.0) internal successors, (4501), 7 states have internal predecessors, (4501), 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) [2022-11-20 12:04:19,101 INFO L175 Difference]: Start difference. First operand has 578 places, 589 transitions, 1187 flow. Second operand 6 states and 3285 transitions. [2022-11-20 12:04:19,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 588 transitions, 1369 flow [2022-11-20 12:04:19,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 588 transitions, 1365 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:04:19,115 INFO L231 Difference]: Finished difference. Result has 580 places, 588 transitions, 1191 flow [2022-11-20 12:04:19,117 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1191, PETRI_PLACES=580, PETRI_TRANSITIONS=588} [2022-11-20 12:04:19,120 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -17 predicate places. [2022-11-20 12:04:19,120 INFO L495 AbstractCegarLoop]: Abstraction has has 580 places, 588 transitions, 1191 flow [2022-11-20 12:04:19,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 533.8333333333334) internal successors, (3203), 6 states have internal predecessors, (3203), 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) [2022-11-20 12:04:19,125 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:19,126 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:19,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:04:19,127 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 160 more)] === [2022-11-20 12:04:19,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:19,128 INFO L85 PathProgramCache]: Analyzing trace with hash -2125542702, now seen corresponding path program 1 times [2022-11-20 12:04:19,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:19,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911107022] [2022-11-20 12:04:19,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:19,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:19,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:19,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:19,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911107022] [2022-11-20 12:04:19,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911107022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:19,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:19,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:04:19,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722486590] [2022-11-20 12:04:19,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:19,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:04:19,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:19,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:04:19,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:04:19,225 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 600 out of 643 [2022-11-20 12:04:19,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 588 transitions, 1191 flow. Second operand has 3 states, 3 states have (on average 601.6666666666666) internal successors, (1805), 3 states have internal predecessors, (1805), 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) [2022-11-20 12:04:19,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:19,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 600 of 643 [2022-11-20 12:04:19,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:19,579 INFO L130 PetriNetUnfolder]: 103/1906 cut-off events. [2022-11-20 12:04:19,579 INFO L131 PetriNetUnfolder]: For 12/23 co-relation queries the response was YES. [2022-11-20 12:04:19,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2017 conditions, 1906 events. 103/1906 cut-off events. For 12/23 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 11905 event pairs, 20 based on Foata normal form. 1/1563 useless extension candidates. Maximal degree in co-relation 1999. Up to 94 conditions per place. [2022-11-20 12:04:19,601 INFO L137 encePairwiseOnDemand]: 635/643 looper letters, 19 selfloop transitions, 2 changer transitions 0/585 dead transitions. [2022-11-20 12:04:19,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 585 transitions, 1228 flow [2022-11-20 12:04:19,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:04:19,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:04:19,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1827 transitions. [2022-11-20 12:04:19,607 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9471228615863142 [2022-11-20 12:04:19,607 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1827 transitions. [2022-11-20 12:04:19,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1827 transitions. [2022-11-20 12:04:19,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:19,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1827 transitions. [2022-11-20 12:04:19,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 609.0) internal successors, (1827), 3 states have internal predecessors, (1827), 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) [2022-11-20 12:04:19,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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) [2022-11-20 12:04:19,620 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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) [2022-11-20 12:04:19,620 INFO L175 Difference]: Start difference. First operand has 580 places, 588 transitions, 1191 flow. Second operand 3 states and 1827 transitions. [2022-11-20 12:04:19,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 585 transitions, 1228 flow [2022-11-20 12:04:19,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 585 transitions, 1218 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:04:19,634 INFO L231 Difference]: Finished difference. Result has 572 places, 584 transitions, 1183 flow [2022-11-20 12:04:19,635 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1183, PETRI_PLACES=572, PETRI_TRANSITIONS=584} [2022-11-20 12:04:19,636 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -25 predicate places. [2022-11-20 12:04:19,636 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 584 transitions, 1183 flow [2022-11-20 12:04:19,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 601.6666666666666) internal successors, (1805), 3 states have internal predecessors, (1805), 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) [2022-11-20 12:04:19,638 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:19,639 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:19,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:04:19,639 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 160 more)] === [2022-11-20 12:04:19,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:19,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1338338554, now seen corresponding path program 1 times [2022-11-20 12:04:19,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:19,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755059386] [2022-11-20 12:04:19,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:19,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:19,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:19,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:19,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755059386] [2022-11-20 12:04:19,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755059386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:19,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:19,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:04:19,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777494322] [2022-11-20 12:04:19,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:19,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:04:19,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:19,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:04:19,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:04:19,708 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 606 out of 643 [2022-11-20 12:04:19,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 584 transitions, 1183 flow. Second operand has 3 states, 3 states have (on average 607.0) internal successors, (1821), 3 states have internal predecessors, (1821), 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) [2022-11-20 12:04:19,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:19,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 606 of 643 [2022-11-20 12:04:19,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:20,228 INFO L130 PetriNetUnfolder]: 102/2724 cut-off events. [2022-11-20 12:04:20,229 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 12:04:20,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2791 conditions, 2724 events. 102/2724 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 20088 event pairs, 5 based on Foata normal form. 0/2242 useless extension candidates. Maximal degree in co-relation 2754. Up to 22 conditions per place. [2022-11-20 12:04:20,247 INFO L137 encePairwiseOnDemand]: 636/643 looper letters, 13 selfloop transitions, 3 changer transitions 0/581 dead transitions. [2022-11-20 12:04:20,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 581 transitions, 1210 flow [2022-11-20 12:04:20,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:04:20,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:04:20,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1838 transitions. [2022-11-20 12:04:20,253 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9528252980819077 [2022-11-20 12:04:20,253 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1838 transitions. [2022-11-20 12:04:20,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1838 transitions. [2022-11-20 12:04:20,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:20,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1838 transitions. [2022-11-20 12:04:20,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 612.6666666666666) internal successors, (1838), 3 states have internal predecessors, (1838), 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) [2022-11-20 12:04:20,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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) [2022-11-20 12:04:20,265 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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) [2022-11-20 12:04:20,266 INFO L175 Difference]: Start difference. First operand has 572 places, 584 transitions, 1183 flow. Second operand 3 states and 1838 transitions. [2022-11-20 12:04:20,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 581 transitions, 1210 flow [2022-11-20 12:04:20,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 581 transitions, 1210 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:04:20,278 INFO L231 Difference]: Finished difference. Result has 570 places, 580 transitions, 1181 flow [2022-11-20 12:04:20,279 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=1175, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1181, PETRI_PLACES=570, PETRI_TRANSITIONS=580} [2022-11-20 12:04:20,280 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -27 predicate places. [2022-11-20 12:04:20,281 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 580 transitions, 1181 flow [2022-11-20 12:04:20,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 607.0) internal successors, (1821), 3 states have internal predecessors, (1821), 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) [2022-11-20 12:04:20,282 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:20,282 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:20,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:04:20,283 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 160 more)] === [2022-11-20 12:04:20,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:20,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1701451502, now seen corresponding path program 1 times [2022-11-20 12:04:20,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:20,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092819442] [2022-11-20 12:04:20,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:20,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:20,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:20,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:20,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092819442] [2022-11-20 12:04:20,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092819442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:20,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:20,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:04:20,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181678285] [2022-11-20 12:04:20,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:20,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:04:20,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:20,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:04:20,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:04:20,361 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 510 out of 643 [2022-11-20 12:04:20,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 580 transitions, 1181 flow. Second operand has 3 states, 3 states have (on average 511.3333333333333) internal successors, (1534), 3 states have internal predecessors, (1534), 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) [2022-11-20 12:04:20,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:20,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 510 of 643 [2022-11-20 12:04:20,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:20,785 INFO L130 PetriNetUnfolder]: 133/1430 cut-off events. [2022-11-20 12:04:20,786 INFO L131 PetriNetUnfolder]: For 84/89 co-relation queries the response was YES. [2022-11-20 12:04:20,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1786 conditions, 1430 events. 133/1430 cut-off events. For 84/89 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8930 event pairs, 27 based on Foata normal form. 2/1266 useless extension candidates. Maximal degree in co-relation 1748. Up to 222 conditions per place. [2022-11-20 12:04:20,802 INFO L137 encePairwiseOnDemand]: 596/643 looper letters, 67 selfloop transitions, 18 changer transitions 5/553 dead transitions. [2022-11-20 12:04:20,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 553 transitions, 1302 flow [2022-11-20 12:04:20,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:04:20,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:04:20,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1645 transitions. [2022-11-20 12:04:20,808 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8527734577501296 [2022-11-20 12:04:20,808 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1645 transitions. [2022-11-20 12:04:20,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1645 transitions. [2022-11-20 12:04:20,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:20,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1645 transitions. [2022-11-20 12:04:20,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 548.3333333333334) internal successors, (1645), 3 states have internal predecessors, (1645), 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) [2022-11-20 12:04:20,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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) [2022-11-20 12:04:20,824 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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) [2022-11-20 12:04:20,825 INFO L175 Difference]: Start difference. First operand has 570 places, 580 transitions, 1181 flow. Second operand 3 states and 1645 transitions. [2022-11-20 12:04:20,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 553 transitions, 1302 flow [2022-11-20 12:04:20,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 553 transitions, 1296 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:04:20,839 INFO L231 Difference]: Finished difference. Result has 542 places, 547 transitions, 1144 flow [2022-11-20 12:04:20,841 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1144, PETRI_PLACES=542, PETRI_TRANSITIONS=547} [2022-11-20 12:04:20,844 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -55 predicate places. [2022-11-20 12:04:20,845 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 547 transitions, 1144 flow [2022-11-20 12:04:20,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 511.3333333333333) internal successors, (1534), 3 states have internal predecessors, (1534), 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) [2022-11-20 12:04:20,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:20,846 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:20,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:04:20,847 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 160 more)] === [2022-11-20 12:04:20,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:20,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1612672808, now seen corresponding path program 1 times [2022-11-20 12:04:20,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:20,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757716673] [2022-11-20 12:04:20,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:20,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:20,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:21,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:21,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:21,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757716673] [2022-11-20 12:04:21,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757716673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:21,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:21,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:04:21,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748267027] [2022-11-20 12:04:21,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:21,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:04:21,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:21,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:04:21,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:04:21,440 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 537 out of 643 [2022-11-20 12:04:21,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 547 transitions, 1144 flow. Second operand has 6 states, 6 states have (on average 538.8333333333334) internal successors, (3233), 6 states have internal predecessors, (3233), 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) [2022-11-20 12:04:21,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:21,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 537 of 643 [2022-11-20 12:04:21,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:25,852 INFO L130 PetriNetUnfolder]: 5925/17496 cut-off events. [2022-11-20 12:04:25,853 INFO L131 PetriNetUnfolder]: For 1/5 co-relation queries the response was YES. [2022-11-20 12:04:25,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27051 conditions, 17496 events. 5925/17496 cut-off events. For 1/5 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 164308 event pairs, 1418 based on Foata normal form. 3/15163 useless extension candidates. Maximal degree in co-relation 27011. Up to 3269 conditions per place. [2022-11-20 12:04:26,026 INFO L137 encePairwiseOnDemand]: 638/643 looper letters, 319 selfloop transitions, 4 changer transitions 0/786 dead transitions. [2022-11-20 12:04:26,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 786 transitions, 2268 flow [2022-11-20 12:04:26,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:04:26,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:04:26,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3546 transitions. [2022-11-20 12:04:26,039 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9191290824261276 [2022-11-20 12:04:26,040 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3546 transitions. [2022-11-20 12:04:26,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3546 transitions. [2022-11-20 12:04:26,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:26,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3546 transitions. [2022-11-20 12:04:26,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 591.0) internal successors, (3546), 6 states have internal predecessors, (3546), 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) [2022-11-20 12:04:26,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 643.0) internal successors, (4501), 7 states have internal predecessors, (4501), 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) [2022-11-20 12:04:26,066 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 643.0) internal successors, (4501), 7 states have internal predecessors, (4501), 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) [2022-11-20 12:04:26,067 INFO L175 Difference]: Start difference. First operand has 542 places, 547 transitions, 1144 flow. Second operand 6 states and 3546 transitions. [2022-11-20 12:04:26,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 786 transitions, 2268 flow [2022-11-20 12:04:26,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 786 transitions, 2232 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:04:26,096 INFO L231 Difference]: Finished difference. Result has 539 places, 546 transitions, 1114 flow [2022-11-20 12:04:26,097 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1114, PETRI_PLACES=539, PETRI_TRANSITIONS=546} [2022-11-20 12:04:26,098 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -58 predicate places. [2022-11-20 12:04:26,099 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 546 transitions, 1114 flow [2022-11-20 12:04:26,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 538.8333333333334) internal successors, (3233), 6 states have internal predecessors, (3233), 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) [2022-11-20 12:04:26,100 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:26,101 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:26,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:04:26,101 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 160 more)] === [2022-11-20 12:04:26,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:26,102 INFO L85 PathProgramCache]: Analyzing trace with hash -2098529122, now seen corresponding path program 1 times [2022-11-20 12:04:26,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:26,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803437398] [2022-11-20 12:04:26,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:26,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:26,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:26,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803437398] [2022-11-20 12:04:26,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803437398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:26,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:26,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:04:26,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730925975] [2022-11-20 12:04:26,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:26,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:04:26,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:26,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:04:26,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:04:26,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 588 out of 643 [2022-11-20 12:04:26,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 546 transitions, 1114 flow. Second operand has 3 states, 3 states have (on average 589.6666666666666) internal successors, (1769), 3 states have internal predecessors, (1769), 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) [2022-11-20 12:04:26,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:26,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 588 of 643 [2022-11-20 12:04:26,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:26,781 INFO L130 PetriNetUnfolder]: 174/2518 cut-off events. [2022-11-20 12:04:26,781 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-20 12:04:26,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2738 conditions, 2518 events. 174/2518 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 17196 event pairs, 19 based on Foata normal form. 0/2243 useless extension candidates. Maximal degree in co-relation 2700. Up to 180 conditions per place. [2022-11-20 12:04:26,810 INFO L137 encePairwiseOnDemand]: 627/643 looper letters, 27 selfloop transitions, 6 changer transitions 0/544 dead transitions. [2022-11-20 12:04:26,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 544 transitions, 1178 flow [2022-11-20 12:04:26,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:04:26,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:04:26,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1807 transitions. [2022-11-20 12:04:26,817 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9367547952306895 [2022-11-20 12:04:26,817 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1807 transitions. [2022-11-20 12:04:26,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1807 transitions. [2022-11-20 12:04:26,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:26,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1807 transitions. [2022-11-20 12:04:26,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 602.3333333333334) internal successors, (1807), 3 states have internal predecessors, (1807), 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) [2022-11-20 12:04:26,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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) [2022-11-20 12:04:26,832 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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) [2022-11-20 12:04:26,832 INFO L175 Difference]: Start difference. First operand has 539 places, 546 transitions, 1114 flow. Second operand 3 states and 1807 transitions. [2022-11-20 12:04:26,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 544 transitions, 1178 flow [2022-11-20 12:04:26,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 544 transitions, 1171 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:04:26,847 INFO L231 Difference]: Finished difference. Result has 528 places, 542 transitions, 1129 flow [2022-11-20 12:04:26,849 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1129, PETRI_PLACES=528, PETRI_TRANSITIONS=542} [2022-11-20 12:04:26,850 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -69 predicate places. [2022-11-20 12:04:26,850 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 542 transitions, 1129 flow [2022-11-20 12:04:26,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 589.6666666666666) internal successors, (1769), 3 states have internal predecessors, (1769), 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) [2022-11-20 12:04:26,852 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:26,852 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:26,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:04:26,852 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 160 more)] === [2022-11-20 12:04:26,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:26,853 INFO L85 PathProgramCache]: Analyzing trace with hash -831708604, now seen corresponding path program 1 times [2022-11-20 12:04:26,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:26,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027201440] [2022-11-20 12:04:26,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:26,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:27,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:27,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:27,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027201440] [2022-11-20 12:04:27,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027201440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:27,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:27,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:04:27,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369109640] [2022-11-20 12:04:27,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:27,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:04:27,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:27,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:04:27,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:04:27,040 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 605 out of 643 [2022-11-20 12:04:27,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 542 transitions, 1129 flow. Second operand has 4 states, 4 states have (on average 608.0) internal successors, (2432), 4 states have internal predecessors, (2432), 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) [2022-11-20 12:04:27,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:27,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 605 of 643 [2022-11-20 12:04:27,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:28,079 INFO L130 PetriNetUnfolder]: 209/4026 cut-off events. [2022-11-20 12:04:28,079 INFO L131 PetriNetUnfolder]: For 2/4 co-relation queries the response was YES. [2022-11-20 12:04:28,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4328 conditions, 4026 events. 209/4026 cut-off events. For 2/4 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 31759 event pairs, 16 based on Foata normal form. 1/3591 useless extension candidates. Maximal degree in co-relation 4289. Up to 88 conditions per place. [2022-11-20 12:04:28,114 INFO L137 encePairwiseOnDemand]: 637/643 looper letters, 29 selfloop transitions, 6 changer transitions 0/559 dead transitions. [2022-11-20 12:04:28,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 559 transitions, 1237 flow [2022-11-20 12:04:28,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:04:28,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:04:28,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3061 transitions. [2022-11-20 12:04:28,125 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.952099533437014 [2022-11-20 12:04:28,125 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3061 transitions. [2022-11-20 12:04:28,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3061 transitions. [2022-11-20 12:04:28,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:28,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3061 transitions. [2022-11-20 12:04:28,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 612.2) internal successors, (3061), 5 states have internal predecessors, (3061), 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) [2022-11-20 12:04:28,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 643.0) internal successors, (3858), 6 states have internal predecessors, (3858), 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) [2022-11-20 12:04:28,148 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 643.0) internal successors, (3858), 6 states have internal predecessors, (3858), 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) [2022-11-20 12:04:28,148 INFO L175 Difference]: Start difference. First operand has 528 places, 542 transitions, 1129 flow. Second operand 5 states and 3061 transitions. [2022-11-20 12:04:28,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 559 transitions, 1237 flow [2022-11-20 12:04:28,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 559 transitions, 1237 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:04:28,165 INFO L231 Difference]: Finished difference. Result has 535 places, 546 transitions, 1167 flow [2022-11-20 12:04:28,166 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1167, PETRI_PLACES=535, PETRI_TRANSITIONS=546} [2022-11-20 12:04:28,167 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -62 predicate places. [2022-11-20 12:04:28,167 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 546 transitions, 1167 flow [2022-11-20 12:04:28,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 608.0) internal successors, (2432), 4 states have internal predecessors, (2432), 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) [2022-11-20 12:04:28,169 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:28,170 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:28,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:04:28,170 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 160 more)] === [2022-11-20 12:04:28,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:28,171 INFO L85 PathProgramCache]: Analyzing trace with hash -111871074, now seen corresponding path program 1 times [2022-11-20 12:04:28,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:28,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341802483] [2022-11-20 12:04:28,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:28,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:28,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:28,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:28,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341802483] [2022-11-20 12:04:28,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341802483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:28,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:28,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:04:28,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71012316] [2022-11-20 12:04:28,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:28,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:04:28,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:28,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:04:28,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:04:28,829 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 537 out of 643 [2022-11-20 12:04:28,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 546 transitions, 1167 flow. Second operand has 6 states, 6 states have (on average 539.8333333333334) internal successors, (3239), 6 states have internal predecessors, (3239), 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) [2022-11-20 12:04:28,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:28,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 537 of 643 [2022-11-20 12:04:28,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:38,297 INFO L130 PetriNetUnfolder]: 11169/48604 cut-off events. [2022-11-20 12:04:38,297 INFO L131 PetriNetUnfolder]: For 172/172 co-relation queries the response was YES. [2022-11-20 12:04:38,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66283 conditions, 48604 events. 11169/48604 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 581822 event pairs, 8680 based on Foata normal form. 0/43083 useless extension candidates. Maximal degree in co-relation 66238. Up to 14521 conditions per place. [2022-11-20 12:04:38,606 INFO L137 encePairwiseOnDemand]: 638/643 looper letters, 294 selfloop transitions, 4 changer transitions 0/761 dead transitions. [2022-11-20 12:04:38,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 761 transitions, 2193 flow [2022-11-20 12:04:38,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:04:38,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:04:38,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3521 transitions. [2022-11-20 12:04:38,617 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9126490409538621 [2022-11-20 12:04:38,617 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3521 transitions. [2022-11-20 12:04:38,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3521 transitions. [2022-11-20 12:04:38,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:38,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3521 transitions. [2022-11-20 12:04:38,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 586.8333333333334) internal successors, (3521), 6 states have internal predecessors, (3521), 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) [2022-11-20 12:04:38,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 643.0) internal successors, (4501), 7 states have internal predecessors, (4501), 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) [2022-11-20 12:04:38,641 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 643.0) internal successors, (4501), 7 states have internal predecessors, (4501), 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) [2022-11-20 12:04:38,641 INFO L175 Difference]: Start difference. First operand has 535 places, 546 transitions, 1167 flow. Second operand 6 states and 3521 transitions. [2022-11-20 12:04:38,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 761 transitions, 2193 flow [2022-11-20 12:04:38,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 761 transitions, 2193 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:04:38,658 INFO L231 Difference]: Finished difference. Result has 539 places, 545 transitions, 1173 flow [2022-11-20 12:04:38,659 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1173, PETRI_PLACES=539, PETRI_TRANSITIONS=545} [2022-11-20 12:04:38,660 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -58 predicate places. [2022-11-20 12:04:38,660 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 545 transitions, 1173 flow [2022-11-20 12:04:38,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 539.8333333333334) internal successors, (3239), 6 states have internal predecessors, (3239), 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) [2022-11-20 12:04:38,662 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:38,662 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:38,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:04:38,662 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 160 more)] === [2022-11-20 12:04:38,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:38,663 INFO L85 PathProgramCache]: Analyzing trace with hash 722145874, now seen corresponding path program 1 times [2022-11-20 12:04:38,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:38,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562683809] [2022-11-20 12:04:38,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:38,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:39,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:39,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:39,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562683809] [2022-11-20 12:04:39,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562683809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:39,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:39,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:04:39,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655272930] [2022-11-20 12:04:39,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:39,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:04:39,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:39,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:04:39,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:04:39,092 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 526 out of 643 [2022-11-20 12:04:39,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 545 transitions, 1173 flow. Second operand has 6 states, 6 states have (on average 528.0) internal successors, (3168), 6 states have internal predecessors, (3168), 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) [2022-11-20 12:04:39,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:39,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 526 of 643 [2022-11-20 12:04:39,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:49,385 INFO L130 PetriNetUnfolder]: 16126/51538 cut-off events. [2022-11-20 12:04:49,385 INFO L131 PetriNetUnfolder]: For 4834/4834 co-relation queries the response was YES. [2022-11-20 12:04:49,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82136 conditions, 51538 events. 16126/51538 cut-off events. For 4834/4834 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 574962 event pairs, 6566 based on Foata normal form. 0/46858 useless extension candidates. Maximal degree in co-relation 82090. Up to 12402 conditions per place. [2022-11-20 12:04:49,796 INFO L137 encePairwiseOnDemand]: 637/643 looper letters, 366 selfloop transitions, 6 changer transitions 0/820 dead transitions. [2022-11-20 12:04:49,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 820 transitions, 2475 flow [2022-11-20 12:04:49,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:04:49,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:04:49,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3526 transitions. [2022-11-20 12:04:49,806 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9139450492483152 [2022-11-20 12:04:49,807 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3526 transitions. [2022-11-20 12:04:49,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3526 transitions. [2022-11-20 12:04:49,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:49,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3526 transitions. [2022-11-20 12:04:49,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 587.6666666666666) internal successors, (3526), 6 states have internal predecessors, (3526), 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) [2022-11-20 12:04:49,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 643.0) internal successors, (4501), 7 states have internal predecessors, (4501), 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) [2022-11-20 12:04:49,830 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 643.0) internal successors, (4501), 7 states have internal predecessors, (4501), 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) [2022-11-20 12:04:49,830 INFO L175 Difference]: Start difference. First operand has 539 places, 545 transitions, 1173 flow. Second operand 6 states and 3526 transitions. [2022-11-20 12:04:49,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 820 transitions, 2475 flow [2022-11-20 12:04:49,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 820 transitions, 2468 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:04:49,854 INFO L231 Difference]: Finished difference. Result has 539 places, 544 transitions, 1176 flow [2022-11-20 12:04:49,855 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1176, PETRI_PLACES=539, PETRI_TRANSITIONS=544} [2022-11-20 12:04:49,856 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -58 predicate places. [2022-11-20 12:04:49,856 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 544 transitions, 1176 flow [2022-11-20 12:04:49,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 528.0) internal successors, (3168), 6 states have internal predecessors, (3168), 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) [2022-11-20 12:04:49,858 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:49,858 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:49,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:04:49,859 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 160 more)] === [2022-11-20 12:04:49,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:49,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1934675625, now seen corresponding path program 1 times [2022-11-20 12:04:49,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:49,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477569548] [2022-11-20 12:04:49,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:49,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:49,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:49,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:49,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477569548] [2022-11-20 12:04:49,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477569548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:49,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:49,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:04:49,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030379739] [2022-11-20 12:04:49,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:49,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:04:49,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:49,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:04:49,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:04:49,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 525 out of 643 [2022-11-20 12:04:49,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 544 transitions, 1176 flow. Second operand has 4 states, 4 states have (on average 528.25) internal successors, (2113), 4 states have internal predecessors, (2113), 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) [2022-11-20 12:04:49,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:49,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 525 of 643 [2022-11-20 12:04:49,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:51,190 INFO L130 PetriNetUnfolder]: 424/3873 cut-off events. [2022-11-20 12:04:51,190 INFO L131 PetriNetUnfolder]: For 278/281 co-relation queries the response was YES. [2022-11-20 12:04:51,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5267 conditions, 3873 events. 424/3873 cut-off events. For 278/281 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 31508 event pairs, 96 based on Foata normal form. 1/3516 useless extension candidates. Maximal degree in co-relation 5222. Up to 757 conditions per place. [2022-11-20 12:04:51,217 INFO L137 encePairwiseOnDemand]: 633/643 looper letters, 144 selfloop transitions, 10 changer transitions 0/600 dead transitions. [2022-11-20 12:04:51,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 600 transitions, 1599 flow [2022-11-20 12:04:51,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:04:51,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:04:51,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2780 transitions. [2022-11-20 12:04:51,230 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.864696734059098 [2022-11-20 12:04:51,231 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2780 transitions. [2022-11-20 12:04:51,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2780 transitions. [2022-11-20 12:04:51,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:51,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2780 transitions. [2022-11-20 12:04:51,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 556.0) internal successors, (2780), 5 states have internal predecessors, (2780), 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) [2022-11-20 12:04:51,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 643.0) internal successors, (3858), 6 states have internal predecessors, (3858), 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) [2022-11-20 12:04:51,250 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 643.0) internal successors, (3858), 6 states have internal predecessors, (3858), 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) [2022-11-20 12:04:51,250 INFO L175 Difference]: Start difference. First operand has 539 places, 544 transitions, 1176 flow. Second operand 5 states and 2780 transitions. [2022-11-20 12:04:51,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 600 transitions, 1599 flow [2022-11-20 12:04:51,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 600 transitions, 1587 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:04:51,264 INFO L231 Difference]: Finished difference. Result has 541 places, 552 transitions, 1234 flow [2022-11-20 12:04:51,266 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1234, PETRI_PLACES=541, PETRI_TRANSITIONS=552} [2022-11-20 12:04:51,267 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -56 predicate places. [2022-11-20 12:04:51,267 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 552 transitions, 1234 flow [2022-11-20 12:04:51,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 528.25) internal successors, (2113), 4 states have internal predecessors, (2113), 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) [2022-11-20 12:04:51,268 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:51,268 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:51,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:04:51,269 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 160 more)] === [2022-11-20 12:04:51,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:51,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1300937771, now seen corresponding path program 1 times [2022-11-20 12:04:51,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:51,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925172429] [2022-11-20 12:04:51,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:51,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:51,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:51,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:51,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925172429] [2022-11-20 12:04:51,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925172429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:51,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:51,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:04:51,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339101619] [2022-11-20 12:04:51,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:51,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:04:51,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:51,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:04:51,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:04:51,329 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 604 out of 643 [2022-11-20 12:04:51,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 552 transitions, 1234 flow. Second operand has 3 states, 3 states have (on average 607.3333333333334) internal successors, (1822), 3 states have internal predecessors, (1822), 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) [2022-11-20 12:04:51,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:51,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 604 of 643 [2022-11-20 12:04:51,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:51,960 INFO L130 PetriNetUnfolder]: 140/2577 cut-off events. [2022-11-20 12:04:51,961 INFO L131 PetriNetUnfolder]: For 42/44 co-relation queries the response was YES. [2022-11-20 12:04:51,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2969 conditions, 2577 events. 140/2577 cut-off events. For 42/44 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 15992 event pairs, 26 based on Foata normal form. 0/2335 useless extension candidates. Maximal degree in co-relation 2921. Up to 87 conditions per place. [2022-11-20 12:04:51,989 INFO L137 encePairwiseOnDemand]: 640/643 looper letters, 12 selfloop transitions, 2 changer transitions 0/552 dead transitions. [2022-11-20 12:04:51,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 552 transitions, 1263 flow [2022-11-20 12:04:51,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:04:51,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:04:51,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1827 transitions. [2022-11-20 12:04:51,995 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9471228615863142 [2022-11-20 12:04:51,996 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1827 transitions. [2022-11-20 12:04:51,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1827 transitions. [2022-11-20 12:04:51,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:51,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1827 transitions. [2022-11-20 12:04:52,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 609.0) internal successors, (1827), 3 states have internal predecessors, (1827), 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) [2022-11-20 12:04:52,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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) [2022-11-20 12:04:52,008 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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) [2022-11-20 12:04:52,009 INFO L175 Difference]: Start difference. First operand has 541 places, 552 transitions, 1234 flow. Second operand 3 states and 1827 transitions. [2022-11-20 12:04:52,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 552 transitions, 1263 flow [2022-11-20 12:04:52,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 552 transitions, 1263 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:04:52,024 INFO L231 Difference]: Finished difference. Result has 542 places, 551 transitions, 1236 flow [2022-11-20 12:04:52,025 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=1232, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1236, PETRI_PLACES=542, PETRI_TRANSITIONS=551} [2022-11-20 12:04:52,027 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -55 predicate places. [2022-11-20 12:04:52,027 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 551 transitions, 1236 flow [2022-11-20 12:04:52,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 607.3333333333334) internal successors, (1822), 3 states have internal predecessors, (1822), 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) [2022-11-20 12:04:52,028 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:52,029 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:52,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:04:52,029 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err42ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 160 more)] === [2022-11-20 12:04:52,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:52,030 INFO L85 PathProgramCache]: Analyzing trace with hash 56641217, now seen corresponding path program 1 times [2022-11-20 12:04:52,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:52,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537345687] [2022-11-20 12:04:52,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:52,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:52,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:52,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:52,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537345687] [2022-11-20 12:04:52,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537345687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:52,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:52,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:04:52,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575297833] [2022-11-20 12:04:52,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:52,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:04:52,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:52,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:04:52,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:04:52,208 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 525 out of 643 [2022-11-20 12:04:52,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 551 transitions, 1236 flow. Second operand has 4 states, 4 states have (on average 528.25) internal successors, (2113), 4 states have internal predecessors, (2113), 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) [2022-11-20 12:04:52,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:52,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 525 of 643 [2022-11-20 12:04:52,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:53,364 INFO L130 PetriNetUnfolder]: 421/3863 cut-off events. [2022-11-20 12:04:53,364 INFO L131 PetriNetUnfolder]: For 354/356 co-relation queries the response was YES. [2022-11-20 12:04:53,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5368 conditions, 3863 events. 421/3863 cut-off events. For 354/356 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 31449 event pairs, 98 based on Foata normal form. 0/3527 useless extension candidates. Maximal degree in co-relation 5318. Up to 757 conditions per place. [2022-11-20 12:04:53,395 INFO L137 encePairwiseOnDemand]: 633/643 looper letters, 144 selfloop transitions, 10 changer transitions 0/600 dead transitions. [2022-11-20 12:04:53,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 600 transitions, 1645 flow [2022-11-20 12:04:53,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:04:53,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:04:53,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2780 transitions. [2022-11-20 12:04:53,402 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.864696734059098 [2022-11-20 12:04:53,403 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2780 transitions. [2022-11-20 12:04:53,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2780 transitions. [2022-11-20 12:04:53,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:53,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2780 transitions. [2022-11-20 12:04:53,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 556.0) internal successors, (2780), 5 states have internal predecessors, (2780), 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) [2022-11-20 12:04:53,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 643.0) internal successors, (3858), 6 states have internal predecessors, (3858), 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) [2022-11-20 12:04:53,416 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 643.0) internal successors, (3858), 6 states have internal predecessors, (3858), 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) [2022-11-20 12:04:53,416 INFO L175 Difference]: Start difference. First operand has 542 places, 551 transitions, 1236 flow. Second operand 5 states and 2780 transitions. [2022-11-20 12:04:53,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 600 transitions, 1645 flow [2022-11-20 12:04:53,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 600 transitions, 1641 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:04:53,429 INFO L231 Difference]: Finished difference. Result has 547 places, 554 transitions, 1282 flow [2022-11-20 12:04:53,430 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=1232, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1282, PETRI_PLACES=547, PETRI_TRANSITIONS=554} [2022-11-20 12:04:53,431 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -50 predicate places. [2022-11-20 12:04:53,431 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 554 transitions, 1282 flow [2022-11-20 12:04:53,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 528.25) internal successors, (2113), 4 states have internal predecessors, (2113), 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) [2022-11-20 12:04:53,432 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:53,432 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:53,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 12:04:53,433 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 160 more)] === [2022-11-20 12:04:53,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:53,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1020938330, now seen corresponding path program 1 times [2022-11-20 12:04:53,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:53,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113562997] [2022-11-20 12:04:53,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:53,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:53,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:53,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113562997] [2022-11-20 12:04:53,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113562997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:53,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:53,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:04:53,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181479725] [2022-11-20 12:04:53,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:53,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:04:53,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:53,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:04:53,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:04:53,827 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 502 out of 643 [2022-11-20 12:04:53,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 554 transitions, 1282 flow. Second operand has 6 states, 6 states have (on average 504.1666666666667) internal successors, (3025), 6 states have internal predecessors, (3025), 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) [2022-11-20 12:04:53,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:53,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 502 of 643 [2022-11-20 12:04:53,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:05:06,368 INFO L130 PetriNetUnfolder]: 21416/68547 cut-off events. [2022-11-20 12:05:06,368 INFO L131 PetriNetUnfolder]: For 5664/5664 co-relation queries the response was YES. [2022-11-20 12:05:06,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109771 conditions, 68547 events. 21416/68547 cut-off events. For 5664/5664 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 769885 event pairs, 7202 based on Foata normal form. 0/63772 useless extension candidates. Maximal degree in co-relation 109716. Up to 13614 conditions per place. [2022-11-20 12:05:06,889 INFO L137 encePairwiseOnDemand]: 589/643 looper letters, 135 selfloop transitions, 50 changer transitions 0/613 dead transitions. [2022-11-20 12:05:06,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 613 transitions, 1782 flow [2022-11-20 12:05:06,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:05:06,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:05:06,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3197 transitions. [2022-11-20 12:05:06,899 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8286677034733022 [2022-11-20 12:05:06,899 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3197 transitions. [2022-11-20 12:05:06,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3197 transitions. [2022-11-20 12:05:06,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:05:06,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3197 transitions. [2022-11-20 12:05:06,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 532.8333333333334) internal successors, (3197), 6 states have internal predecessors, (3197), 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) [2022-11-20 12:05:06,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 643.0) internal successors, (4501), 7 states have internal predecessors, (4501), 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) [2022-11-20 12:05:06,918 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 643.0) internal successors, (4501), 7 states have internal predecessors, (4501), 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) [2022-11-20 12:05:06,919 INFO L175 Difference]: Start difference. First operand has 547 places, 554 transitions, 1282 flow. Second operand 6 states and 3197 transitions. [2022-11-20 12:05:06,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 613 transitions, 1782 flow [2022-11-20 12:05:06,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 613 transitions, 1782 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:05:06,945 INFO L231 Difference]: Finished difference. Result has 543 places, 545 transitions, 1364 flow [2022-11-20 12:05:06,946 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1364, PETRI_PLACES=543, PETRI_TRANSITIONS=545} [2022-11-20 12:05:06,946 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -54 predicate places. [2022-11-20 12:05:06,947 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 545 transitions, 1364 flow [2022-11-20 12:05:06,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 504.1666666666667) internal successors, (3025), 6 states have internal predecessors, (3025), 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) [2022-11-20 12:05:06,948 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:05:06,948 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:06,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 12:05:06,948 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 160 more)] === [2022-11-20 12:05:06,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:06,949 INFO L85 PathProgramCache]: Analyzing trace with hash -944837932, now seen corresponding path program 1 times [2022-11-20 12:05:06,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:06,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466932388] [2022-11-20 12:05:06,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:06,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:06,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:07,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:05:07,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:07,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466932388] [2022-11-20 12:05:07,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466932388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:07,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:07,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:05:07,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853739498] [2022-11-20 12:05:07,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:07,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:05:07,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:07,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:05:07,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:05:07,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 508 out of 643 [2022-11-20 12:05:07,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 545 transitions, 1364 flow. Second operand has 3 states, 3 states have (on average 511.6666666666667) internal successors, (1535), 3 states have internal predecessors, (1535), 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) [2022-11-20 12:05:07,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:05:07,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 508 of 643 [2022-11-20 12:05:07,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:05:08,007 INFO L130 PetriNetUnfolder]: 385/3724 cut-off events. [2022-11-20 12:05:08,007 INFO L131 PetriNetUnfolder]: For 598/602 co-relation queries the response was YES. [2022-11-20 12:05:08,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5475 conditions, 3724 events. 385/3724 cut-off events. For 598/602 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 29911 event pairs, 232 based on Foata normal form. 0/3473 useless extension candidates. Maximal degree in co-relation 5421. Up to 865 conditions per place. [2022-11-20 12:05:08,042 INFO L137 encePairwiseOnDemand]: 640/643 looper letters, 84 selfloop transitions, 2 changer transitions 0/545 dead transitions. [2022-11-20 12:05:08,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 545 transitions, 1537 flow [2022-11-20 12:05:08,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:05:08,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:05:08,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1611 transitions. [2022-11-20 12:05:08,046 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8351477449455676 [2022-11-20 12:05:08,046 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1611 transitions. [2022-11-20 12:05:08,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1611 transitions. [2022-11-20 12:05:08,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:05:08,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1611 transitions. [2022-11-20 12:05:08,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 537.0) internal successors, (1611), 3 states have internal predecessors, (1611), 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) [2022-11-20 12:05:08,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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) [2022-11-20 12:05:08,056 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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) [2022-11-20 12:05:08,056 INFO L175 Difference]: Start difference. First operand has 543 places, 545 transitions, 1364 flow. Second operand 3 states and 1611 transitions. [2022-11-20 12:05:08,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 545 transitions, 1537 flow [2022-11-20 12:05:08,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 545 transitions, 1437 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:05:08,076 INFO L231 Difference]: Finished difference. Result has 539 places, 544 transitions, 1266 flow [2022-11-20 12:05:08,077 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=1262, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1266, PETRI_PLACES=539, PETRI_TRANSITIONS=544} [2022-11-20 12:05:08,077 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -58 predicate places. [2022-11-20 12:05:08,077 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 544 transitions, 1266 flow [2022-11-20 12:05:08,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 511.6666666666667) internal successors, (1535), 3 states have internal predecessors, (1535), 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) [2022-11-20 12:05:08,078 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:05:08,078 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:08,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 12:05:08,079 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err51ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 160 more)] === [2022-11-20 12:05:08,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:08,080 INFO L85 PathProgramCache]: Analyzing trace with hash 2082254252, now seen corresponding path program 1 times [2022-11-20 12:05:08,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:08,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084881749] [2022-11-20 12:05:08,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:08,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:08,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:05:08,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:08,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084881749] [2022-11-20 12:05:08,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084881749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:08,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:08,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:05:08,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861392496] [2022-11-20 12:05:08,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:08,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:05:08,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:08,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:05:08,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:05:08,153 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 508 out of 643 [2022-11-20 12:05:08,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 544 transitions, 1266 flow. Second operand has 3 states, 3 states have (on average 511.0) internal successors, (1533), 3 states have internal predecessors, (1533), 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) [2022-11-20 12:05:08,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:05:08,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 508 of 643 [2022-11-20 12:05:08,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:05:09,265 INFO L130 PetriNetUnfolder]: 383/3716 cut-off events. [2022-11-20 12:05:09,266 INFO L131 PetriNetUnfolder]: For 452/456 co-relation queries the response was YES. [2022-11-20 12:05:09,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5051 conditions, 3716 events. 383/3716 cut-off events. For 452/456 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 29740 event pairs, 230 based on Foata normal form. 0/3471 useless extension candidates. Maximal degree in co-relation 4997. Up to 857 conditions per place. [2022-11-20 12:05:09,311 INFO L137 encePairwiseOnDemand]: 640/643 looper letters, 83 selfloop transitions, 2 changer transitions 0/544 dead transitions. [2022-11-20 12:05:09,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 544 transitions, 1437 flow [2022-11-20 12:05:09,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:05:09,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:05:09,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1610 transitions. [2022-11-20 12:05:09,316 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8346293416277865 [2022-11-20 12:05:09,316 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1610 transitions. [2022-11-20 12:05:09,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1610 transitions. [2022-11-20 12:05:09,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:05:09,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1610 transitions. [2022-11-20 12:05:09,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 536.6666666666666) internal successors, (1610), 3 states have internal predecessors, (1610), 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) [2022-11-20 12:05:09,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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) [2022-11-20 12:05:09,325 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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) [2022-11-20 12:05:09,326 INFO L175 Difference]: Start difference. First operand has 539 places, 544 transitions, 1266 flow. Second operand 3 states and 1610 transitions. [2022-11-20 12:05:09,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 544 transitions, 1437 flow [2022-11-20 12:05:09,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 544 transitions, 1433 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:05:09,335 INFO L231 Difference]: Finished difference. Result has 538 places, 543 transitions, 1264 flow [2022-11-20 12:05:09,335 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1264, PETRI_PLACES=538, PETRI_TRANSITIONS=543} [2022-11-20 12:05:09,336 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -59 predicate places. [2022-11-20 12:05:09,336 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 543 transitions, 1264 flow [2022-11-20 12:05:09,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 511.0) internal successors, (1533), 3 states have internal predecessors, (1533), 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) [2022-11-20 12:05:09,337 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:05:09,337 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:09,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 12:05:09,338 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err43ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 160 more)] === [2022-11-20 12:05:09,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:09,338 INFO L85 PathProgramCache]: Analyzing trace with hash 966629488, now seen corresponding path program 1 times [2022-11-20 12:05:09,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:09,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726929961] [2022-11-20 12:05:09,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:09,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:09,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:05:09,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:09,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726929961] [2022-11-20 12:05:09,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726929961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:09,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:09,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:05:09,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661947534] [2022-11-20 12:05:09,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:09,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:05:09,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:09,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:05:09,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:05:09,404 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 508 out of 643 [2022-11-20 12:05:09,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 543 transitions, 1264 flow. Second operand has 3 states, 3 states have (on average 511.6666666666667) internal successors, (1535), 3 states have internal predecessors, (1535), 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) [2022-11-20 12:05:09,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:05:09,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 508 of 643 [2022-11-20 12:05:09,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:05:10,150 INFO L130 PetriNetUnfolder]: 381/3708 cut-off events. [2022-11-20 12:05:10,150 INFO L131 PetriNetUnfolder]: For 450/454 co-relation queries the response was YES. [2022-11-20 12:05:10,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5035 conditions, 3708 events. 381/3708 cut-off events. For 450/454 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 29701 event pairs, 228 based on Foata normal form. 0/3469 useless extension candidates. Maximal degree in co-relation 4981. Up to 849 conditions per place. [2022-11-20 12:05:10,181 INFO L137 encePairwiseOnDemand]: 640/643 looper letters, 82 selfloop transitions, 2 changer transitions 0/543 dead transitions. [2022-11-20 12:05:10,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 543 transitions, 1433 flow [2022-11-20 12:05:10,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:05:10,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:05:10,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1609 transitions. [2022-11-20 12:05:10,187 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8341109383100052 [2022-11-20 12:05:10,188 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1609 transitions. [2022-11-20 12:05:10,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1609 transitions. [2022-11-20 12:05:10,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:05:10,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1609 transitions. [2022-11-20 12:05:10,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 536.3333333333334) internal successors, (1609), 3 states have internal predecessors, (1609), 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) [2022-11-20 12:05:10,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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) [2022-11-20 12:05:10,193 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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) [2022-11-20 12:05:10,194 INFO L175 Difference]: Start difference. First operand has 538 places, 543 transitions, 1264 flow. Second operand 3 states and 1609 transitions. [2022-11-20 12:05:10,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 543 transitions, 1433 flow [2022-11-20 12:05:10,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 543 transitions, 1429 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:05:10,206 INFO L231 Difference]: Finished difference. Result has 537 places, 542 transitions, 1262 flow [2022-11-20 12:05:10,207 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1262, PETRI_PLACES=537, PETRI_TRANSITIONS=542} [2022-11-20 12:05:10,207 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -60 predicate places. [2022-11-20 12:05:10,208 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 542 transitions, 1262 flow [2022-11-20 12:05:10,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 511.6666666666667) internal successors, (1535), 3 states have internal predecessors, (1535), 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) [2022-11-20 12:05:10,209 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:05:10,209 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:10,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 12:05:10,209 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err59ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 160 more)] === [2022-11-20 12:05:10,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:10,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1327612161, now seen corresponding path program 1 times [2022-11-20 12:05:10,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:10,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937911599] [2022-11-20 12:05:10,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:10,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:05:10,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:10,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937911599] [2022-11-20 12:05:10,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937911599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:10,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:10,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:05:10,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679756001] [2022-11-20 12:05:10,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:10,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:05:10,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:10,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:05:10,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:05:10,283 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 508 out of 643 [2022-11-20 12:05:10,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 542 transitions, 1262 flow. Second operand has 3 states, 3 states have (on average 511.0) internal successors, (1533), 3 states have internal predecessors, (1533), 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) [2022-11-20 12:05:10,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:05:10,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 508 of 643 [2022-11-20 12:05:10,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand