./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a 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_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc --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 3a956b76a4ba98ce13df4d83ef2fb7ffa0973225ecb152c14bcfbb55b6546601 --- 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-5e519f3 [2022-11-02 21:04:15,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:04:15,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:04:15,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:04:15,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:04:15,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:04:15,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:04:15,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:04:15,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:04:15,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:04:15,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:04:15,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:04:15,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:04:15,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:04:15,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:04:15,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:04:15,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:04:15,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:04:15,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:04:15,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:04:15,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:04:15,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:04:15,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:04:15,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:04:15,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:04:15,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:04:15,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:04:15,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:04:15,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:04:15,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:04:15,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:04:15,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:04:15,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:04:15,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:04:15,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:04:15,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:04:15,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:04:15,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:04:15,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:04:15,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:04:15,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:04:15,204 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 21:04:15,250 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:04:15,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:04:15,251 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:04:15,252 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:04:15,253 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:04:15,253 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:04:15,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:04:15,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:04:15,254 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:04:15,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:04:15,256 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:04:15,256 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:04:15,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:04:15,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:04:15,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:04:15,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:04:15,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:04:15,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:04:15,257 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 21:04:15,258 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:04:15,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:04:15,258 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:04:15,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:04:15,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:04:15,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:04:15,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:04:15,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:04:15,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:04:15,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:04:15,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:04:15,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:04:15,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:04:15,262 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:04:15,262 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:04:15,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:04:15,263 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_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a956b76a4ba98ce13df4d83ef2fb7ffa0973225ecb152c14bcfbb55b6546601 [2022-11-02 21:04:15,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:04:15,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:04:15,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:04:15,646 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:04:15,647 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:04:15,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2022-11-02 21:04:15,729 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/data/f657064d4/e4feee6cfa124762b59bcef59eb055ce/FLAG9038325da [2022-11-02 21:04:16,410 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:04:16,410 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2022-11-02 21:04:16,431 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/data/f657064d4/e4feee6cfa124762b59bcef59eb055ce/FLAG9038325da [2022-11-02 21:04:16,630 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/data/f657064d4/e4feee6cfa124762b59bcef59eb055ce [2022-11-02 21:04:16,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:04:16,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:04:16,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:04:16,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:04:16,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:04:16,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:04:16" (1/1) ... [2022-11-02 21:04:16,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e13d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:16, skipping insertion in model container [2022-11-02 21:04:16,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:04:16" (1/1) ... [2022-11-02 21:04:16,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:04:16,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:04:16,982 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-02 21:04:17,266 WARN L230 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_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39095,39108] [2022-11-02 21:04:17,268 WARN L230 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_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39180,39193] [2022-11-02 21:04:17,269 WARN L230 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_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39232,39245] [2022-11-02 21:04:17,275 WARN L230 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_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39641,39654] [2022-11-02 21:04:17,280 WARN L230 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_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39726,39739] [2022-11-02 21:04:17,281 WARN L230 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_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39778,39791] [2022-11-02 21:04:17,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:04:17,298 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:04:17,320 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-02 21:04:17,357 WARN L230 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_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39095,39108] [2022-11-02 21:04:17,358 WARN L230 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_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39180,39193] [2022-11-02 21:04:17,359 WARN L230 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_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39232,39245] [2022-11-02 21:04:17,363 WARN L230 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_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39641,39654] [2022-11-02 21:04:17,364 WARN L230 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_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39726,39739] [2022-11-02 21:04:17,365 WARN L230 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_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39778,39791] [2022-11-02 21:04:17,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:04:17,428 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:04:17,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17 WrapperNode [2022-11-02 21:04:17,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:04:17,430 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:04:17,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:04:17,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:04:17,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17" (1/1) ... [2022-11-02 21:04:17,487 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17" (1/1) ... [2022-11-02 21:04:17,542 INFO L138 Inliner]: procedures = 225, calls = 43, calls flagged for inlining = 10, calls inlined = 7, statements flattened = 198 [2022-11-02 21:04:17,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:04:17,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:04:17,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:04:17,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:04:17,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17" (1/1) ... [2022-11-02 21:04:17,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17" (1/1) ... [2022-11-02 21:04:17,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17" (1/1) ... [2022-11-02 21:04:17,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17" (1/1) ... [2022-11-02 21:04:17,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17" (1/1) ... [2022-11-02 21:04:17,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17" (1/1) ... [2022-11-02 21:04:17,604 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17" (1/1) ... [2022-11-02 21:04:17,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17" (1/1) ... [2022-11-02 21:04:17,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:04:17,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:04:17,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:04:17,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:04:17,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17" (1/1) ... [2022-11-02 21:04:17,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:04:17,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:17,662 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:04:17,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:04:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:04:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:04:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:04:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:04:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:04:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:04:17,715 INFO L130 BoogieDeclarations]: Found specification of procedure reader_nowait_fn [2022-11-02 21:04:17,715 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_nowait_fn [2022-11-02 21:04:17,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:04:17,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:04:17,717 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 21:04:17,904 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:04:17,906 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:04:18,522 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:04:18,533 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:04:18,533 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 21:04:18,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:04:18 BoogieIcfgContainer [2022-11-02 21:04:18,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:04:18,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:04:18,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:04:18,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:04:18,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:04:16" (1/3) ... [2022-11-02 21:04:18,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a70178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:04:18, skipping insertion in model container [2022-11-02 21:04:18,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:17" (2/3) ... [2022-11-02 21:04:18,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a70178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:04:18, skipping insertion in model container [2022-11-02 21:04:18,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:04:18" (3/3) ... [2022-11-02 21:04:18,556 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_1w1r-1.i [2022-11-02 21:04:18,567 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:04:18,579 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:04:18,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-11-02 21:04:18,580 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:04:18,716 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-02 21:04:18,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 238 transitions, 484 flow [2022-11-02 21:04:18,954 INFO L130 PetriNetUnfolder]: 9/237 cut-off events. [2022-11-02 21:04:18,954 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 21:04:18,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 237 events. 9/237 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 520 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 180. Up to 2 conditions per place. [2022-11-02 21:04:18,967 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 238 transitions, 484 flow [2022-11-02 21:04:18,983 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 228 transitions, 459 flow [2022-11-02 21:04:19,001 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:04:19,010 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;@2d9a73db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:04:19,011 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-02 21:04:19,031 INFO L130 PetriNetUnfolder]: 0/32 cut-off events. [2022-11-02 21:04:19,032 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 21:04:19,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:19,034 INFO L208 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] [2022-11-02 21:04:19,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:04:19,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:19,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1177147086, now seen corresponding path program 1 times [2022-11-02 21:04:19,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:19,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707117951] [2022-11-02 21:04:19,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:19,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:20,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:20,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:20,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707117951] [2022-11-02 21:04:20,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707117951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:20,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:20,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:04:20,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935580500] [2022-11-02 21:04:20,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:20,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:04:20,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:20,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:04:20,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:04:20,115 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 238 [2022-11-02 21:04:20,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 228 transitions, 459 flow. Second operand has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:20,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:04:20,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 238 [2022-11-02 21:04:20,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:04:21,764 INFO L130 PetriNetUnfolder]: 1707/5516 cut-off events. [2022-11-02 21:04:21,764 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 21:04:21,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8808 conditions, 5516 events. 1707/5516 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 44991 event pairs, 1512 based on Foata normal form. 375/5154 useless extension candidates. Maximal degree in co-relation 8738. Up to 3276 conditions per place. [2022-11-02 21:04:21,808 INFO L137 encePairwiseOnDemand]: 226/238 looper letters, 91 selfloop transitions, 5 changer transitions 0/221 dead transitions. [2022-11-02 21:04:21,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 221 transitions, 637 flow [2022-11-02 21:04:21,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:04:21,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:04:21,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 907 transitions. [2022-11-02 21:04:21,835 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6351540616246498 [2022-11-02 21:04:21,836 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 907 transitions. [2022-11-02 21:04:21,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 907 transitions. [2022-11-02 21:04:21,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:04:21,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 907 transitions. [2022-11-02 21:04:21,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 151.16666666666666) internal successors, (907), 6 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:21,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:21,862 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:21,864 INFO L175 Difference]: Start difference. First operand has 223 places, 228 transitions, 459 flow. Second operand 6 states and 907 transitions. [2022-11-02 21:04:21,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 221 transitions, 637 flow [2022-11-02 21:04:21,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 221 transitions, 636 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:04:21,877 INFO L231 Difference]: Finished difference. Result has 226 places, 221 transitions, 454 flow [2022-11-02 21:04:21,880 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=454, PETRI_PLACES=226, PETRI_TRANSITIONS=221} [2022-11-02 21:04:21,884 INFO L287 CegarLoopForPetriNet]: 223 programPoint places, 3 predicate places. [2022-11-02 21:04:21,884 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 221 transitions, 454 flow [2022-11-02 21:04:21,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:21,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:21,886 INFO L208 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] [2022-11-02 21:04:21,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:04:21,887 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:04:21,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:21,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1648035877, now seen corresponding path program 1 times [2022-11-02 21:04:21,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:21,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839043215] [2022-11-02 21:04:21,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:21,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:22,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:22,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839043215] [2022-11-02 21:04:22,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839043215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:22,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:22,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:04:22,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207675083] [2022-11-02 21:04:22,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:22,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:04:22,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:22,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:04:22,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:04:22,519 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 238 [2022-11-02 21:04:22,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 221 transitions, 454 flow. Second operand has 6 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:22,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:04:22,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 238 [2022-11-02 21:04:22,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:04:23,807 INFO L130 PetriNetUnfolder]: 1707/5515 cut-off events. [2022-11-02 21:04:23,807 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 21:04:23,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8811 conditions, 5515 events. 1707/5515 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 44818 event pairs, 1512 based on Foata normal form. 0/4779 useless extension candidates. Maximal degree in co-relation 8748. Up to 3282 conditions per place. [2022-11-02 21:04:23,840 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 90 selfloop transitions, 5 changer transitions 0/220 dead transitions. [2022-11-02 21:04:23,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 220 transitions, 642 flow [2022-11-02 21:04:23,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:04:23,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:04:23,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 900 transitions. [2022-11-02 21:04:23,844 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6302521008403361 [2022-11-02 21:04:23,845 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 900 transitions. [2022-11-02 21:04:23,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 900 transitions. [2022-11-02 21:04:23,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:04:23,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 900 transitions. [2022-11-02 21:04:23,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:23,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:23,855 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:23,856 INFO L175 Difference]: Start difference. First operand has 226 places, 221 transitions, 454 flow. Second operand 6 states and 900 transitions. [2022-11-02 21:04:23,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 220 transitions, 642 flow [2022-11-02 21:04:23,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 220 transitions, 632 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 21:04:23,871 INFO L231 Difference]: Finished difference. Result has 225 places, 220 transitions, 452 flow [2022-11-02 21:04:23,872 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=452, PETRI_PLACES=225, PETRI_TRANSITIONS=220} [2022-11-02 21:04:23,872 INFO L287 CegarLoopForPetriNet]: 223 programPoint places, 2 predicate places. [2022-11-02 21:04:23,873 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 220 transitions, 452 flow [2022-11-02 21:04:23,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:23,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:23,874 INFO L208 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] [2022-11-02 21:04:23,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:04:23,875 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:04:23,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:23,876 INFO L85 PathProgramCache]: Analyzing trace with hash -765257624, now seen corresponding path program 1 times [2022-11-02 21:04:23,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:23,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718064481] [2022-11-02 21:04:23,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:23,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:24,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:24,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:24,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718064481] [2022-11-02 21:04:24,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718064481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:24,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:24,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:04:24,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651685458] [2022-11-02 21:04:24,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:24,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:04:24,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:24,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:04:24,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:04:24,445 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 238 [2022-11-02 21:04:24,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 220 transitions, 452 flow. Second operand has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:24,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:04:24,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 238 [2022-11-02 21:04:24,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:04:26,650 INFO L130 PetriNetUnfolder]: 2913/8124 cut-off events. [2022-11-02 21:04:26,650 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 21:04:26,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13789 conditions, 8124 events. 2913/8124 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 65069 event pairs, 912 based on Foata normal form. 0/7111 useless extension candidates. Maximal degree in co-relation 13730. Up to 3784 conditions per place. [2022-11-02 21:04:26,704 INFO L137 encePairwiseOnDemand]: 217/238 looper letters, 242 selfloop transitions, 43 changer transitions 0/410 dead transitions. [2022-11-02 21:04:26,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 410 transitions, 1402 flow [2022-11-02 21:04:26,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:04:26,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:04:26,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1091 transitions. [2022-11-02 21:04:26,710 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7640056022408963 [2022-11-02 21:04:26,711 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1091 transitions. [2022-11-02 21:04:26,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1091 transitions. [2022-11-02 21:04:26,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:04:26,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1091 transitions. [2022-11-02 21:04:26,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 181.83333333333334) internal successors, (1091), 6 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:26,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:26,722 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:26,723 INFO L175 Difference]: Start difference. First operand has 225 places, 220 transitions, 452 flow. Second operand 6 states and 1091 transitions. [2022-11-02 21:04:26,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 410 transitions, 1402 flow [2022-11-02 21:04:26,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 410 transitions, 1392 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 21:04:26,735 INFO L231 Difference]: Finished difference. Result has 230 places, 262 transitions, 738 flow [2022-11-02 21:04:26,736 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=738, PETRI_PLACES=230, PETRI_TRANSITIONS=262} [2022-11-02 21:04:26,738 INFO L287 CegarLoopForPetriNet]: 223 programPoint places, 7 predicate places. [2022-11-02 21:04:26,738 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 262 transitions, 738 flow [2022-11-02 21:04:26,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:26,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:26,739 INFO L208 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] [2022-11-02 21:04:26,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:04:26,740 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:04:26,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:26,740 INFO L85 PathProgramCache]: Analyzing trace with hash -942807167, now seen corresponding path program 1 times [2022-11-02 21:04:26,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:26,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366905596] [2022-11-02 21:04:26,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:26,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:26,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:26,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:26,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366905596] [2022-11-02 21:04:26,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366905596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:26,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:26,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:04:26,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587080243] [2022-11-02 21:04:26,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:26,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:26,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:26,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:26,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:26,889 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 238 [2022-11-02 21:04:26,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 262 transitions, 738 flow. Second operand has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:26,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:04:26,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 238 [2022-11-02 21:04:26,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:04:27,520 INFO L130 PetriNetUnfolder]: 295/2450 cut-off events. [2022-11-02 21:04:27,521 INFO L131 PetriNetUnfolder]: For 236/268 co-relation queries the response was YES. [2022-11-02 21:04:27,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3548 conditions, 2450 events. 295/2450 cut-off events. For 236/268 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 17680 event pairs, 16 based on Foata normal form. 0/2231 useless extension candidates. Maximal degree in co-relation 3492. Up to 340 conditions per place. [2022-11-02 21:04:27,553 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 7 selfloop transitions, 2 changer transitions 0/265 dead transitions. [2022-11-02 21:04:27,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 265 transitions, 762 flow [2022-11-02 21:04:27,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:27,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:04:27,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 685 transitions. [2022-11-02 21:04:27,561 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9593837535014006 [2022-11-02 21:04:27,561 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 685 transitions. [2022-11-02 21:04:27,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 685 transitions. [2022-11-02 21:04:27,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:04:27,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 685 transitions. [2022-11-02 21:04:27,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:27,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:27,576 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:27,576 INFO L175 Difference]: Start difference. First operand has 230 places, 262 transitions, 738 flow. Second operand 3 states and 685 transitions. [2022-11-02 21:04:27,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 265 transitions, 762 flow [2022-11-02 21:04:27,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 265 transitions, 762 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:04:27,591 INFO L231 Difference]: Finished difference. Result has 233 places, 263 transitions, 750 flow [2022-11-02 21:04:27,592 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=750, PETRI_PLACES=233, PETRI_TRANSITIONS=263} [2022-11-02 21:04:27,594 INFO L287 CegarLoopForPetriNet]: 223 programPoint places, 10 predicate places. [2022-11-02 21:04:27,594 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 263 transitions, 750 flow [2022-11-02 21:04:27,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:27,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:27,595 INFO L208 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] [2022-11-02 21:04:27,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:04:27,596 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:04:27,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:27,598 INFO L85 PathProgramCache]: Analyzing trace with hash -916765828, now seen corresponding path program 1 times [2022-11-02 21:04:27,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:27,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324823967] [2022-11-02 21:04:27,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:27,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:27,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:27,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:27,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324823967] [2022-11-02 21:04:27,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324823967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:27,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:27,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:04:27,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100810108] [2022-11-02 21:04:27,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:27,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:27,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:27,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:27,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:27,708 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 238 [2022-11-02 21:04:27,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 263 transitions, 750 flow. Second operand has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:27,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:04:27,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 238 [2022-11-02 21:04:27,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:04:28,737 INFO L130 PetriNetUnfolder]: 543/3840 cut-off events. [2022-11-02 21:04:28,738 INFO L131 PetriNetUnfolder]: For 462/523 co-relation queries the response was YES. [2022-11-02 21:04:28,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6064 conditions, 3840 events. 543/3840 cut-off events. For 462/523 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 30836 event pairs, 46 based on Foata normal form. 0/3523 useless extension candidates. Maximal degree in co-relation 6006. Up to 649 conditions per place. [2022-11-02 21:04:28,780 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 10 selfloop transitions, 2 changer transitions 0/267 dead transitions. [2022-11-02 21:04:28,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 267 transitions, 782 flow [2022-11-02 21:04:28,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:28,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:04:28,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2022-11-02 21:04:28,784 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9551820728291317 [2022-11-02 21:04:28,784 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2022-11-02 21:04:28,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2022-11-02 21:04:28,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:04:28,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2022-11-02 21:04:28,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:28,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:28,791 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:28,791 INFO L175 Difference]: Start difference. First operand has 233 places, 263 transitions, 750 flow. Second operand 3 states and 682 transitions. [2022-11-02 21:04:28,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 267 transitions, 782 flow [2022-11-02 21:04:28,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 267 transitions, 780 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:04:28,806 INFO L231 Difference]: Finished difference. Result has 235 places, 264 transitions, 760 flow [2022-11-02 21:04:28,807 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=760, PETRI_PLACES=235, PETRI_TRANSITIONS=264} [2022-11-02 21:04:28,810 INFO L287 CegarLoopForPetriNet]: 223 programPoint places, 12 predicate places. [2022-11-02 21:04:28,810 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 264 transitions, 760 flow [2022-11-02 21:04:28,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:28,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:28,811 INFO L208 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] [2022-11-02 21:04:28,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:04:28,812 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:04:28,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:28,813 INFO L85 PathProgramCache]: Analyzing trace with hash 159417040, now seen corresponding path program 1 times [2022-11-02 21:04:28,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:28,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444133681] [2022-11-02 21:04:28,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:28,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:29,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:29,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:29,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444133681] [2022-11-02 21:04:29,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444133681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:29,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:29,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:04:29,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856358194] [2022-11-02 21:04:29,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:29,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:04:29,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:29,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:04:29,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:04:29,241 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 238 [2022-11-02 21:04:29,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 264 transitions, 760 flow. Second operand has 6 states, 6 states have (on average 135.16666666666666) internal successors, (811), 6 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:29,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:04:29,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 238 [2022-11-02 21:04:29,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:04:36,155 INFO L130 PetriNetUnfolder]: 11063/29239 cut-off events. [2022-11-02 21:04:36,156 INFO L131 PetriNetUnfolder]: For 8988/9177 co-relation queries the response was YES. [2022-11-02 21:04:36,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61035 conditions, 29239 events. 11063/29239 cut-off events. For 8988/9177 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 273177 event pairs, 2766 based on Foata normal form. 0/26645 useless extension candidates. Maximal degree in co-relation 60966. Up to 12020 conditions per place. [2022-11-02 21:04:36,372 INFO L137 encePairwiseOnDemand]: 214/238 looper letters, 319 selfloop transitions, 45 changer transitions 0/489 dead transitions. [2022-11-02 21:04:36,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 489 transitions, 2246 flow [2022-11-02 21:04:36,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:04:36,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:04:36,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1069 transitions. [2022-11-02 21:04:36,378 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7485994397759104 [2022-11-02 21:04:36,378 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1069 transitions. [2022-11-02 21:04:36,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1069 transitions. [2022-11-02 21:04:36,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:04:36,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1069 transitions. [2022-11-02 21:04:36,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 178.16666666666666) internal successors, (1069), 6 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:36,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:36,668 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:36,669 INFO L175 Difference]: Start difference. First operand has 235 places, 264 transitions, 760 flow. Second operand 6 states and 1069 transitions. [2022-11-02 21:04:36,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 489 transitions, 2246 flow [2022-11-02 21:04:36,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 489 transitions, 2244 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:04:36,726 INFO L231 Difference]: Finished difference. Result has 244 places, 308 transitions, 1150 flow [2022-11-02 21:04:36,727 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1150, PETRI_PLACES=244, PETRI_TRANSITIONS=308} [2022-11-02 21:04:36,730 INFO L287 CegarLoopForPetriNet]: 223 programPoint places, 21 predicate places. [2022-11-02 21:04:36,730 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 308 transitions, 1150 flow [2022-11-02 21:04:36,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.16666666666666) internal successors, (811), 6 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:36,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:36,731 INFO L208 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] [2022-11-02 21:04:36,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:04:36,734 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:04:36,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:36,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1457571279, now seen corresponding path program 1 times [2022-11-02 21:04:36,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:36,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099979930] [2022-11-02 21:04:36,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:36,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:37,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:37,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:37,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099979930] [2022-11-02 21:04:37,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099979930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:37,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:37,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:04:37,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338118891] [2022-11-02 21:04:37,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:37,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:04:37,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:37,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:04:37,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:04:37,134 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 238 [2022-11-02 21:04:37,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 308 transitions, 1150 flow. Second operand has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:37,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:04:37,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 238 [2022-11-02 21:04:37,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:04:44,693 INFO L130 PetriNetUnfolder]: 11656/31740 cut-off events. [2022-11-02 21:04:44,693 INFO L131 PetriNetUnfolder]: For 18645/18763 co-relation queries the response was YES. [2022-11-02 21:04:44,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75207 conditions, 31740 events. 11656/31740 cut-off events. For 18645/18763 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 301840 event pairs, 6320 based on Foata normal form. 8/29525 useless extension candidates. Maximal degree in co-relation 75134. Up to 19882 conditions per place. [2022-11-02 21:04:44,899 INFO L137 encePairwiseOnDemand]: 223/238 looper letters, 373 selfloop transitions, 78 changer transitions 0/577 dead transitions. [2022-11-02 21:04:44,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 577 transitions, 3270 flow [2022-11-02 21:04:44,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:04:44,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:04:44,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1068 transitions. [2022-11-02 21:04:44,905 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7478991596638656 [2022-11-02 21:04:44,905 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1068 transitions. [2022-11-02 21:04:44,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1068 transitions. [2022-11-02 21:04:44,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:04:44,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1068 transitions. [2022-11-02 21:04:44,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:44,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:44,917 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:44,917 INFO L175 Difference]: Start difference. First operand has 244 places, 308 transitions, 1150 flow. Second operand 6 states and 1068 transitions. [2022-11-02 21:04:44,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 577 transitions, 3270 flow [2022-11-02 21:04:44,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 577 transitions, 3270 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:04:45,002 INFO L231 Difference]: Finished difference. Result has 254 places, 385 transitions, 1968 flow [2022-11-02 21:04:45,003 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1968, PETRI_PLACES=254, PETRI_TRANSITIONS=385} [2022-11-02 21:04:45,003 INFO L287 CegarLoopForPetriNet]: 223 programPoint places, 31 predicate places. [2022-11-02 21:04:45,003 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 385 transitions, 1968 flow [2022-11-02 21:04:45,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:45,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:45,004 INFO L208 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] [2022-11-02 21:04:45,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:04:45,005 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:04:45,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:45,005 INFO L85 PathProgramCache]: Analyzing trace with hash 725118963, now seen corresponding path program 1 times [2022-11-02 21:04:45,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:45,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367145965] [2022-11-02 21:04:45,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:45,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:45,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:45,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:45,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367145965] [2022-11-02 21:04:45,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367145965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:45,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:45,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:04:45,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180956327] [2022-11-02 21:04:45,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:45,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:04:45,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:45,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:04:45,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:04:45,518 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 238 [2022-11-02 21:04:45,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 385 transitions, 1968 flow. Second operand has 6 states, 6 states have (on average 136.16666666666666) internal successors, (817), 6 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:45,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:04:45,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 238 [2022-11-02 21:04:45,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:04:53,613 INFO L130 PetriNetUnfolder]: 13545/35766 cut-off events. [2022-11-02 21:04:53,613 INFO L131 PetriNetUnfolder]: For 29241/29432 co-relation queries the response was YES. [2022-11-02 21:04:53,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93225 conditions, 35766 events. 13545/35766 cut-off events. For 29241/29432 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 344768 event pairs, 4776 based on Foata normal form. 0/33529 useless extension candidates. Maximal degree in co-relation 93147. Up to 18056 conditions per place. [2022-11-02 21:04:53,918 INFO L137 encePairwiseOnDemand]: 227/238 looper letters, 458 selfloop transitions, 66 changer transitions 0/650 dead transitions. [2022-11-02 21:04:53,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 650 transitions, 4264 flow [2022-11-02 21:04:53,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:04:53,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:04:53,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1057 transitions. [2022-11-02 21:04:53,922 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7401960784313726 [2022-11-02 21:04:53,922 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1057 transitions. [2022-11-02 21:04:53,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1057 transitions. [2022-11-02 21:04:53,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:04:53,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1057 transitions. [2022-11-02 21:04:53,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 176.16666666666666) internal successors, (1057), 6 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:53,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:53,931 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:53,931 INFO L175 Difference]: Start difference. First operand has 254 places, 385 transitions, 1968 flow. Second operand 6 states and 1057 transitions. [2022-11-02 21:04:53,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 650 transitions, 4264 flow [2022-11-02 21:04:54,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 650 transitions, 4264 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:04:54,095 INFO L231 Difference]: Finished difference. Result has 264 places, 447 transitions, 2730 flow [2022-11-02 21:04:54,096 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2730, PETRI_PLACES=264, PETRI_TRANSITIONS=447} [2022-11-02 21:04:54,097 INFO L287 CegarLoopForPetriNet]: 223 programPoint places, 41 predicate places. [2022-11-02 21:04:54,097 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 447 transitions, 2730 flow [2022-11-02 21:04:54,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.16666666666666) internal successors, (817), 6 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:54,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:54,098 INFO L208 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] [2022-11-02 21:04:54,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:04:54,099 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reader_nowait_fnErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:04:54,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:54,104 INFO L85 PathProgramCache]: Analyzing trace with hash -972379362, now seen corresponding path program 1 times [2022-11-02 21:04:54,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:54,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204263527] [2022-11-02 21:04:54,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:54,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:54,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:54,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:54,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204263527] [2022-11-02 21:04:54,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204263527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:54,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:54,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:04:54,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199215319] [2022-11-02 21:04:54,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:54,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:04:54,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:54,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:04:54,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:04:54,560 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 238 [2022-11-02 21:04:54,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 447 transitions, 2730 flow. Second operand has 6 states, 6 states have (on average 138.33333333333334) internal successors, (830), 6 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:54,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:04:54,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 238 [2022-11-02 21:04:54,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:05:04,691 INFO L130 PetriNetUnfolder]: 15015/40909 cut-off events. [2022-11-02 21:05:04,691 INFO L131 PetriNetUnfolder]: For 42048/42348 co-relation queries the response was YES. [2022-11-02 21:05:04,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110801 conditions, 40909 events. 15015/40909 cut-off events. For 42048/42348 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 405680 event pairs, 8126 based on Foata normal form. 66/38717 useless extension candidates. Maximal degree in co-relation 110718. Up to 27986 conditions per place. [2022-11-02 21:05:05,014 INFO L137 encePairwiseOnDemand]: 203/238 looper letters, 356 selfloop transitions, 172 changer transitions 0/654 dead transitions. [2022-11-02 21:05:05,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 654 transitions, 4778 flow [2022-11-02 21:05:05,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:05:05,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:05:05,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1063 transitions. [2022-11-02 21:05:05,019 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7443977591036415 [2022-11-02 21:05:05,019 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1063 transitions. [2022-11-02 21:05:05,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1063 transitions. [2022-11-02 21:05:05,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:05:05,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1063 transitions. [2022-11-02 21:05:05,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 177.16666666666666) internal successors, (1063), 6 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:05,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:05,027 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:05,027 INFO L175 Difference]: Start difference. First operand has 264 places, 447 transitions, 2730 flow. Second operand 6 states and 1063 transitions. [2022-11-02 21:05:05,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 654 transitions, 4778 flow [2022-11-02 21:05:05,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 654 transitions, 4778 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:05:05,274 INFO L231 Difference]: Finished difference. Result has 274 places, 594 transitions, 4302 flow [2022-11-02 21:05:05,275 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=2730, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4302, PETRI_PLACES=274, PETRI_TRANSITIONS=594} [2022-11-02 21:05:05,276 INFO L287 CegarLoopForPetriNet]: 223 programPoint places, 51 predicate places. [2022-11-02 21:05:05,276 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 594 transitions, 4302 flow [2022-11-02 21:05:05,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.33333333333334) internal successors, (830), 6 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:05,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:05:05,277 INFO L208 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] [2022-11-02 21:05:05,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:05:05,277 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:05:05,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:05,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1457297609, now seen corresponding path program 1 times [2022-11-02 21:05:05,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:05,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538685809] [2022-11-02 21:05:05,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:05,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:05,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:05,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:05,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538685809] [2022-11-02 21:05:05,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538685809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:05,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:05,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:05:05,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975045069] [2022-11-02 21:05:05,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:05,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:05:05,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:05,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:05:05,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:05:05,671 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 238 [2022-11-02 21:05:05,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 594 transitions, 4302 flow. Second operand has 6 states, 6 states have (on average 135.33333333333334) internal successors, (812), 6 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:05,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:05:05,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 238 [2022-11-02 21:05:05,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:05:17,775 INFO L130 PetriNetUnfolder]: 16462/43320 cut-off events. [2022-11-02 21:05:17,775 INFO L131 PetriNetUnfolder]: For 65348/65465 co-relation queries the response was YES. [2022-11-02 21:05:18,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134048 conditions, 43320 events. 16462/43320 cut-off events. For 65348/65465 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 427658 event pairs, 8351 based on Foata normal form. 0/41291 useless extension candidates. Maximal degree in co-relation 133960. Up to 30988 conditions per place. [2022-11-02 21:05:18,202 INFO L137 encePairwiseOnDemand]: 207/238 looper letters, 482 selfloop transitions, 167 changer transitions 0/773 dead transitions. [2022-11-02 21:05:18,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 773 transitions, 6474 flow [2022-11-02 21:05:18,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:05:18,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:05:18,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1024 transitions. [2022-11-02 21:05:18,207 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7170868347338936 [2022-11-02 21:05:18,208 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1024 transitions. [2022-11-02 21:05:18,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1024 transitions. [2022-11-02 21:05:18,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:05:18,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1024 transitions. [2022-11-02 21:05:18,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 170.66666666666666) internal successors, (1024), 6 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:18,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:18,215 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:18,215 INFO L175 Difference]: Start difference. First operand has 274 places, 594 transitions, 4302 flow. Second operand 6 states and 1024 transitions. [2022-11-02 21:05:18,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 773 transitions, 6474 flow [2022-11-02 21:05:18,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 773 transitions, 6242 flow, removed 116 selfloop flow, removed 0 redundant places. [2022-11-02 21:05:18,868 INFO L231 Difference]: Finished difference. Result has 284 places, 721 transitions, 5510 flow [2022-11-02 21:05:18,870 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=4082, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5510, PETRI_PLACES=284, PETRI_TRANSITIONS=721} [2022-11-02 21:05:18,871 INFO L287 CegarLoopForPetriNet]: 223 programPoint places, 61 predicate places. [2022-11-02 21:05:18,872 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 721 transitions, 5510 flow [2022-11-02 21:05:18,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.33333333333334) internal successors, (812), 6 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:18,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:05:18,873 INFO L208 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] [2022-11-02 21:05:18,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:05:18,873 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:05:18,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:18,874 INFO L85 PathProgramCache]: Analyzing trace with hash -310920971, now seen corresponding path program 1 times [2022-11-02 21:05:18,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:18,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469689222] [2022-11-02 21:05:18,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:18,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:21,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:05:21,143 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:383) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:154) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:848) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:773) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:284) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-02 21:05:21,149 INFO L158 Benchmark]: Toolchain (without parser) took 64509.46ms. Allocated memory was 92.3MB in the beginning and 12.7GB in the end (delta: 12.6GB). Free memory was 53.1MB in the beginning and 10.3GB in the end (delta: -10.3GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. [2022-11-02 21:05:21,149 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory is still 71.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:05:21,150 INFO L158 Benchmark]: CACSL2BoogieTranslator took 786.13ms. Allocated memory is still 92.3MB. Free memory was 52.9MB in the beginning and 51.6MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 21:05:21,151 INFO L158 Benchmark]: Boogie Procedure Inliner took 112.98ms. Allocated memory is still 92.3MB. Free memory was 51.6MB in the beginning and 47.9MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 21:05:21,152 INFO L158 Benchmark]: Boogie Preprocessor took 66.00ms. Allocated memory is still 92.3MB. Free memory was 47.9MB in the beginning and 45.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:05:21,152 INFO L158 Benchmark]: RCFGBuilder took 932.50ms. Allocated memory is still 92.3MB. Free memory was 45.1MB in the beginning and 50.7MB in the end (delta: -5.6MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2022-11-02 21:05:21,152 INFO L158 Benchmark]: TraceAbstraction took 62602.86ms. Allocated memory was 92.3MB in the beginning and 12.7GB in the end (delta: 12.6GB). Free memory was 50.2MB in the beginning and 10.3GB in the end (delta: -10.3GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. [2022-11-02 21:05:21,157 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory is still 71.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 786.13ms. Allocated memory is still 92.3MB. Free memory was 52.9MB in the beginning and 51.6MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 112.98ms. Allocated memory is still 92.3MB. Free memory was 51.6MB in the beginning and 47.9MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.00ms. Allocated memory is still 92.3MB. Free memory was 47.9MB in the beginning and 45.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 932.50ms. Allocated memory is still 92.3MB. Free memory was 45.1MB in the beginning and 50.7MB in the end (delta: -5.6MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. * TraceAbstraction took 62602.86ms. Allocated memory was 92.3MB in the beginning and 12.7GB in the end (delta: 12.6GB). Free memory was 50.2MB in the beginning and 10.3GB in the end (delta: -10.3GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-02 21:05:21,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc --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 3a956b76a4ba98ce13df4d83ef2fb7ffa0973225ecb152c14bcfbb55b6546601 --- 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-5e519f3 [2022-11-02 21:05:24,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:05:24,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:05:24,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:05:24,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:05:24,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:05:24,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:05:24,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:05:24,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:05:24,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:05:24,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:05:24,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:05:24,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:05:24,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:05:24,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:05:24,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:05:24,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:05:24,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:05:24,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:05:24,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:05:24,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:05:24,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:05:24,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:05:24,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:05:24,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:05:24,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:05:24,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:05:24,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:05:24,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:05:24,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:05:24,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:05:24,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:05:24,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:05:24,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:05:24,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:05:24,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:05:24,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:05:24,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:05:24,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:05:24,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:05:24,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:05:24,262 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Bitvector.epf [2022-11-02 21:05:24,289 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:05:24,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:05:24,290 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:05:24,290 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:05:24,291 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:05:24,291 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:05:24,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:05:24,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:05:24,292 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:05:24,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:05:24,293 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:05:24,293 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:05:24,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:05:24,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:05:24,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:05:24,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:05:24,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:05:24,295 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 21:05:24,295 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:05:24,295 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:05:24,296 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:05:24,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:05:24,296 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:05:24,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:05:24,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:05:24,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:05:24,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:05:24,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:05:24,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:05:24,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:05:24,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:05:24,298 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:05:24,299 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:05:24,299 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:05:24,299 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:05:24,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:05:24,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:05:24,300 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a956b76a4ba98ce13df4d83ef2fb7ffa0973225ecb152c14bcfbb55b6546601 [2022-11-02 21:05:24,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:05:24,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:05:24,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:05:24,826 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:05:24,827 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:05:24,828 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2022-11-02 21:05:24,926 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/data/d4e148b64/753e6b4c9b24470b8f3dd7d2663f19eb/FLAG8f3222a7d [2022-11-02 21:05:25,714 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:05:25,715 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2022-11-02 21:05:25,734 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/data/d4e148b64/753e6b4c9b24470b8f3dd7d2663f19eb/FLAG8f3222a7d [2022-11-02 21:05:25,971 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/data/d4e148b64/753e6b4c9b24470b8f3dd7d2663f19eb [2022-11-02 21:05:25,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:05:25,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:05:25,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:05:25,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:05:25,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:05:25,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:05:25" (1/1) ... [2022-11-02 21:05:25,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2844d6eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:25, skipping insertion in model container [2022-11-02 21:05:25,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:05:25" (1/1) ... [2022-11-02 21:05:25,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:05:26,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:05:26,239 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-02 21:05:26,667 WARN L230 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_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39095,39108] [2022-11-02 21:05:26,671 WARN L230 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_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39180,39193] [2022-11-02 21:05:26,672 WARN L230 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_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39232,39245] [2022-11-02 21:05:26,682 WARN L230 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_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39641,39654] [2022-11-02 21:05:26,684 WARN L230 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_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39726,39739] [2022-11-02 21:05:26,686 WARN L230 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_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39778,39791] [2022-11-02 21:05:26,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:05:26,713 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:05:26,739 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-02 21:05:26,802 WARN L230 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_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39095,39108] [2022-11-02 21:05:26,810 WARN L230 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_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39180,39193] [2022-11-02 21:05:26,811 WARN L230 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_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39232,39245] [2022-11-02 21:05:26,816 WARN L230 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_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39641,39654] [2022-11-02 21:05:26,817 WARN L230 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_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39726,39739] [2022-11-02 21:05:26,818 WARN L230 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_87d43931-caea-45e4-82aa-a3d70b6476d0/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39778,39791] [2022-11-02 21:05:26,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:05:26,899 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:05:26,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:26 WrapperNode [2022-11-02 21:05:26,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:05:26,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:05:26,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:05:26,903 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:05:26,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:26" (1/1) ... [2022-11-02 21:05:26,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:26" (1/1) ... [2022-11-02 21:05:27,020 INFO L138 Inliner]: procedures = 228, calls = 43, calls flagged for inlining = 10, calls inlined = 7, statements flattened = 198 [2022-11-02 21:05:27,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:05:27,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:05:27,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:05:27,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:05:27,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:26" (1/1) ... [2022-11-02 21:05:27,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:26" (1/1) ... [2022-11-02 21:05:27,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:26" (1/1) ... [2022-11-02 21:05:27,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:26" (1/1) ... [2022-11-02 21:05:27,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:26" (1/1) ... [2022-11-02 21:05:27,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:26" (1/1) ... [2022-11-02 21:05:27,121 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:26" (1/1) ... [2022-11-02 21:05:27,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:26" (1/1) ... [2022-11-02 21:05:27,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:05:27,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:05:27,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:05:27,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:05:27,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:26" (1/1) ... [2022-11-02 21:05:27,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:05:27,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:27,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:05:27,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:05:27,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-02 21:05:27,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:05:27,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:05:27,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-02 21:05:27,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-02 21:05:27,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:05:27,238 INFO L130 BoogieDeclarations]: Found specification of procedure reader_nowait_fn [2022-11-02 21:05:27,239 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_nowait_fn [2022-11-02 21:05:27,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:05:27,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:05:27,241 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 21:05:27,455 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:05:27,458 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:05:28,336 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:05:28,346 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:05:28,346 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 21:05:28,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:28 BoogieIcfgContainer [2022-11-02 21:05:28,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:05:28,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:05:28,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:05:28,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:05:28,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:05:25" (1/3) ... [2022-11-02 21:05:28,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51650c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:05:28, skipping insertion in model container [2022-11-02 21:05:28,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:26" (2/3) ... [2022-11-02 21:05:28,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51650c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:05:28, skipping insertion in model container [2022-11-02 21:05:28,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:28" (3/3) ... [2022-11-02 21:05:28,358 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_1w1r-1.i [2022-11-02 21:05:28,368 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:05:28,380 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:05:28,380 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-11-02 21:05:28,381 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:05:28,571 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-02 21:05:28,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 238 transitions, 484 flow [2022-11-02 21:05:28,784 INFO L130 PetriNetUnfolder]: 9/237 cut-off events. [2022-11-02 21:05:28,784 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 21:05:28,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 237 events. 9/237 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 519 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 179. Up to 2 conditions per place. [2022-11-02 21:05:28,795 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 238 transitions, 484 flow [2022-11-02 21:05:28,810 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 228 transitions, 459 flow [2022-11-02 21:05:28,834 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:05:28,844 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;@6a3a6435, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:05:28,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-02 21:05:28,866 INFO L130 PetriNetUnfolder]: 0/33 cut-off events. [2022-11-02 21:05:28,867 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 21:05:28,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:05:28,868 INFO L208 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] [2022-11-02 21:05:28,869 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:05:28,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:28,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1231723625, now seen corresponding path program 1 times [2022-11-02 21:05:28,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:28,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145220469] [2022-11-02 21:05:28,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:28,896 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:28,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:28,904 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:28,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:05:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:29,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 21:05:29,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:29,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2022-11-02 21:05:29,227 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 28 [2022-11-02 21:05:29,303 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:05:29,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 44 [2022-11-02 21:05:29,411 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:05:29,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 60 [2022-11-02 21:05:29,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:29,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:29,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:29,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145220469] [2022-11-02 21:05:29,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145220469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:29,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:29,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:05:29,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309254019] [2022-11-02 21:05:29,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:29,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:05:29,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:29,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:05:29,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:05:29,560 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 238 [2022-11-02 21:05:29,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 228 transitions, 459 flow. Second operand has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:29,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:05:29,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 238 [2022-11-02 21:05:29,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:05:31,704 INFO L130 PetriNetUnfolder]: 1707/5491 cut-off events. [2022-11-02 21:05:31,705 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 21:05:31,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8783 conditions, 5491 events. 1707/5491 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 44612 event pairs, 1512 based on Foata normal form. 376/5132 useless extension candidates. Maximal degree in co-relation 8712. Up to 3276 conditions per place. [2022-11-02 21:05:31,774 INFO L137 encePairwiseOnDemand]: 226/238 looper letters, 91 selfloop transitions, 5 changer transitions 0/221 dead transitions. [2022-11-02 21:05:31,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 221 transitions, 637 flow [2022-11-02 21:05:31,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:05:31,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:05:31,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 907 transitions. [2022-11-02 21:05:31,814 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6351540616246498 [2022-11-02 21:05:31,815 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 907 transitions. [2022-11-02 21:05:31,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 907 transitions. [2022-11-02 21:05:31,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:05:31,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 907 transitions. [2022-11-02 21:05:31,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 151.16666666666666) internal successors, (907), 6 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:31,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:31,876 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:31,878 INFO L175 Difference]: Start difference. First operand has 223 places, 228 transitions, 459 flow. Second operand 6 states and 907 transitions. [2022-11-02 21:05:31,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 221 transitions, 637 flow [2022-11-02 21:05:31,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 221 transitions, 636 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:05:31,891 INFO L231 Difference]: Finished difference. Result has 226 places, 221 transitions, 454 flow [2022-11-02 21:05:31,909 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=454, PETRI_PLACES=226, PETRI_TRANSITIONS=221} [2022-11-02 21:05:31,913 INFO L287 CegarLoopForPetriNet]: 223 programPoint places, 3 predicate places. [2022-11-02 21:05:31,914 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 221 transitions, 454 flow [2022-11-02 21:05:31,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:31,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:05:31,915 INFO L208 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] [2022-11-02 21:05:31,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:32,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:32,136 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:05:32,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:32,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1636836643, now seen corresponding path program 1 times [2022-11-02 21:05:32,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:32,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884104422] [2022-11-02 21:05:32,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:32,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:32,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:32,143 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:32,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:05:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:32,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 21:05:32,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:32,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-11-02 21:05:32,353 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 26 [2022-11-02 21:05:32,399 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:05:32,400 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 42 [2022-11-02 21:05:32,473 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:05:32,473 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 58 [2022-11-02 21:05:32,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:32,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:32,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:32,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884104422] [2022-11-02 21:05:32,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884104422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:32,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:32,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:05:32,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834107171] [2022-11-02 21:05:32,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:32,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:05:32,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:32,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:05:32,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:05:32,531 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 238 [2022-11-02 21:05:32,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 221 transitions, 454 flow. Second operand has 6 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:32,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:05:32,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 238 [2022-11-02 21:05:32,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:05:34,262 INFO L130 PetriNetUnfolder]: 1707/5490 cut-off events. [2022-11-02 21:05:34,262 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 21:05:34,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8786 conditions, 5490 events. 1707/5490 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 44539 event pairs, 1512 based on Foata normal form. 0/4756 useless extension candidates. Maximal degree in co-relation 8722. Up to 3282 conditions per place. [2022-11-02 21:05:34,294 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 90 selfloop transitions, 5 changer transitions 0/220 dead transitions. [2022-11-02 21:05:34,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 220 transitions, 642 flow [2022-11-02 21:05:34,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:05:34,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:05:34,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 900 transitions. [2022-11-02 21:05:34,300 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6302521008403361 [2022-11-02 21:05:34,300 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 900 transitions. [2022-11-02 21:05:34,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 900 transitions. [2022-11-02 21:05:34,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:05:34,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 900 transitions. [2022-11-02 21:05:34,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:34,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:34,309 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:34,309 INFO L175 Difference]: Start difference. First operand has 226 places, 221 transitions, 454 flow. Second operand 6 states and 900 transitions. [2022-11-02 21:05:34,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 220 transitions, 642 flow [2022-11-02 21:05:34,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 220 transitions, 632 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 21:05:34,323 INFO L231 Difference]: Finished difference. Result has 225 places, 220 transitions, 452 flow [2022-11-02 21:05:34,324 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=452, PETRI_PLACES=225, PETRI_TRANSITIONS=220} [2022-11-02 21:05:34,325 INFO L287 CegarLoopForPetriNet]: 223 programPoint places, 2 predicate places. [2022-11-02 21:05:34,325 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 220 transitions, 452 flow [2022-11-02 21:05:34,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:34,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:05:34,327 INFO L208 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] [2022-11-02 21:05:34,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:34,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:34,545 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:05:34,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:34,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1569833666, now seen corresponding path program 1 times [2022-11-02 21:05:34,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:34,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037002270] [2022-11-02 21:05:34,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:34,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:34,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:34,549 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:34,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:05:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:34,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 21:05:34,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:34,742 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:05:34,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 22 [2022-11-02 21:05:34,796 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:05:34,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 36 [2022-11-02 21:05:34,863 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:05:34,864 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 50 [2022-11-02 21:05:34,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:34,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:34,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:34,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037002270] [2022-11-02 21:05:34,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037002270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:34,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:34,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:05:34,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654918826] [2022-11-02 21:05:34,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:34,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:05:34,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:34,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:05:34,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:05:34,926 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 238 [2022-11-02 21:05:34,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 220 transitions, 452 flow. Second operand has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:34,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:05:34,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 238 [2022-11-02 21:05:34,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:05:38,263 INFO L130 PetriNetUnfolder]: 2913/8099 cut-off events. [2022-11-02 21:05:38,263 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 21:05:38,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13764 conditions, 8099 events. 2913/8099 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 64921 event pairs, 912 based on Foata normal form. 0/7087 useless extension candidates. Maximal degree in co-relation 13704. Up to 3784 conditions per place. [2022-11-02 21:05:38,319 INFO L137 encePairwiseOnDemand]: 217/238 looper letters, 242 selfloop transitions, 43 changer transitions 0/410 dead transitions. [2022-11-02 21:05:38,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 410 transitions, 1402 flow [2022-11-02 21:05:38,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:05:38,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:05:38,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1091 transitions. [2022-11-02 21:05:38,325 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7640056022408963 [2022-11-02 21:05:38,325 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1091 transitions. [2022-11-02 21:05:38,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1091 transitions. [2022-11-02 21:05:38,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:05:38,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1091 transitions. [2022-11-02 21:05:38,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 181.83333333333334) internal successors, (1091), 6 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:38,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:38,336 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:38,337 INFO L175 Difference]: Start difference. First operand has 225 places, 220 transitions, 452 flow. Second operand 6 states and 1091 transitions. [2022-11-02 21:05:38,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 410 transitions, 1402 flow [2022-11-02 21:05:38,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 410 transitions, 1392 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 21:05:38,348 INFO L231 Difference]: Finished difference. Result has 230 places, 262 transitions, 738 flow [2022-11-02 21:05:38,348 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=738, PETRI_PLACES=230, PETRI_TRANSITIONS=262} [2022-11-02 21:05:38,349 INFO L287 CegarLoopForPetriNet]: 223 programPoint places, 7 predicate places. [2022-11-02 21:05:38,350 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 262 transitions, 738 flow [2022-11-02 21:05:38,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:38,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:05:38,351 INFO L208 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] [2022-11-02 21:05:38,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:38,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:38,567 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:05:38,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:38,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1569421209, now seen corresponding path program 1 times [2022-11-02 21:05:38,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:38,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013931448] [2022-11-02 21:05:38,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:38,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:38,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:38,574 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:38,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:05:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:38,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:05:38,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:38,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:38,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:38,716 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:38,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013931448] [2022-11-02 21:05:38,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013931448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:38,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:38,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:05:38,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567975205] [2022-11-02 21:05:38,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:38,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:05:38,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:38,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:05:38,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:05:38,720 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 238 [2022-11-02 21:05:38,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 262 transitions, 738 flow. Second operand has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:38,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:05:38,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 238 [2022-11-02 21:05:38,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:05:39,273 INFO L130 PetriNetUnfolder]: 309/2475 cut-off events. [2022-11-02 21:05:39,274 INFO L131 PetriNetUnfolder]: For 220/232 co-relation queries the response was YES. [2022-11-02 21:05:39,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3601 conditions, 2475 events. 309/2475 cut-off events. For 220/232 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 17619 event pairs, 16 based on Foata normal form. 0/2256 useless extension candidates. Maximal degree in co-relation 3544. Up to 340 conditions per place. [2022-11-02 21:05:39,301 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 7 selfloop transitions, 2 changer transitions 0/265 dead transitions. [2022-11-02 21:05:39,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 265 transitions, 762 flow [2022-11-02 21:05:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:05:39,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:05:39,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 685 transitions. [2022-11-02 21:05:39,305 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9593837535014006 [2022-11-02 21:05:39,305 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 685 transitions. [2022-11-02 21:05:39,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 685 transitions. [2022-11-02 21:05:39,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:05:39,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 685 transitions. [2022-11-02 21:05:39,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:39,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:39,312 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:39,312 INFO L175 Difference]: Start difference. First operand has 230 places, 262 transitions, 738 flow. Second operand 3 states and 685 transitions. [2022-11-02 21:05:39,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 265 transitions, 762 flow [2022-11-02 21:05:39,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 265 transitions, 762 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:05:39,324 INFO L231 Difference]: Finished difference. Result has 233 places, 263 transitions, 750 flow [2022-11-02 21:05:39,325 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=750, PETRI_PLACES=233, PETRI_TRANSITIONS=263} [2022-11-02 21:05:39,326 INFO L287 CegarLoopForPetriNet]: 223 programPoint places, 10 predicate places. [2022-11-02 21:05:39,326 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 263 transitions, 750 flow [2022-11-02 21:05:39,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:39,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:05:39,327 INFO L208 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] [2022-11-02 21:05:39,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:39,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:39,542 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:05:39,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:39,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1272499682, now seen corresponding path program 1 times [2022-11-02 21:05:39,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:39,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212508113] [2022-11-02 21:05:39,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:39,544 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:39,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:39,545 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:39,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:05:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:39,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:05:39,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:39,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:39,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:39,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:39,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212508113] [2022-11-02 21:05:39,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212508113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:39,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:39,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:05:39,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098065751] [2022-11-02 21:05:39,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:39,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:05:39,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:39,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:05:39,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:05:39,719 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 238 [2022-11-02 21:05:39,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 263 transitions, 750 flow. Second operand has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:39,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:05:39,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 238 [2022-11-02 21:05:39,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:05:40,517 INFO L130 PetriNetUnfolder]: 555/3861 cut-off events. [2022-11-02 21:05:40,518 INFO L131 PetriNetUnfolder]: For 450/513 co-relation queries the response was YES. [2022-11-02 21:05:40,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6109 conditions, 3861 events. 555/3861 cut-off events. For 450/513 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 30724 event pairs, 46 based on Foata normal form. 0/3544 useless extension candidates. Maximal degree in co-relation 6050. Up to 649 conditions per place. [2022-11-02 21:05:40,555 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 10 selfloop transitions, 2 changer transitions 0/267 dead transitions. [2022-11-02 21:05:40,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 267 transitions, 782 flow [2022-11-02 21:05:40,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:05:40,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:05:40,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2022-11-02 21:05:40,558 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9551820728291317 [2022-11-02 21:05:40,558 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2022-11-02 21:05:40,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2022-11-02 21:05:40,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:05:40,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2022-11-02 21:05:40,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:40,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:40,563 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:40,563 INFO L175 Difference]: Start difference. First operand has 233 places, 263 transitions, 750 flow. Second operand 3 states and 682 transitions. [2022-11-02 21:05:40,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 267 transitions, 782 flow [2022-11-02 21:05:40,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 267 transitions, 780 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:05:40,576 INFO L231 Difference]: Finished difference. Result has 235 places, 264 transitions, 760 flow [2022-11-02 21:05:40,576 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=760, PETRI_PLACES=235, PETRI_TRANSITIONS=264} [2022-11-02 21:05:40,579 INFO L287 CegarLoopForPetriNet]: 223 programPoint places, 12 predicate places. [2022-11-02 21:05:40,579 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 264 transitions, 760 flow [2022-11-02 21:05:40,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:40,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:05:40,580 INFO L208 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] [2022-11-02 21:05:40,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:40,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:40,801 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:05:40,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:40,802 INFO L85 PathProgramCache]: Analyzing trace with hash 982328460, now seen corresponding path program 1 times [2022-11-02 21:05:40,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:40,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61715795] [2022-11-02 21:05:40,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:40,803 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:40,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:40,804 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:40,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:05:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:40,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 21:05:40,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:40,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-02 21:05:40,976 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 24 [2022-11-02 21:05:41,014 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:05:41,017 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 38 [2022-11-02 21:05:41,071 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:05:41,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 52 [2022-11-02 21:05:41,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:41,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:41,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:41,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61715795] [2022-11-02 21:05:41,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61715795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:41,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:41,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:05:41,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118557474] [2022-11-02 21:05:41,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:41,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:05:41,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:41,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:05:41,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:05:41,130 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 238 [2022-11-02 21:05:41,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 264 transitions, 760 flow. Second operand has 6 states, 6 states have (on average 135.16666666666666) internal successors, (811), 6 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:41,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:05:41,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 238 [2022-11-02 21:05:41,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:05:48,175 INFO L130 PetriNetUnfolder]: 11063/29110 cut-off events. [2022-11-02 21:05:48,176 INFO L131 PetriNetUnfolder]: For 9000/9175 co-relation queries the response was YES. [2022-11-02 21:05:48,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60906 conditions, 29110 events. 11063/29110 cut-off events. For 9000/9175 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 271445 event pairs, 2766 based on Foata normal form. 0/26522 useless extension candidates. Maximal degree in co-relation 60836. Up to 12020 conditions per place. [2022-11-02 21:05:48,377 INFO L137 encePairwiseOnDemand]: 214/238 looper letters, 319 selfloop transitions, 45 changer transitions 0/489 dead transitions. [2022-11-02 21:05:48,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 489 transitions, 2246 flow [2022-11-02 21:05:48,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:05:48,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:05:48,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1069 transitions. [2022-11-02 21:05:48,381 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7485994397759104 [2022-11-02 21:05:48,382 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1069 transitions. [2022-11-02 21:05:48,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1069 transitions. [2022-11-02 21:05:48,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:05:48,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1069 transitions. [2022-11-02 21:05:48,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 178.16666666666666) internal successors, (1069), 6 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:48,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:48,389 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:48,390 INFO L175 Difference]: Start difference. First operand has 235 places, 264 transitions, 760 flow. Second operand 6 states and 1069 transitions. [2022-11-02 21:05:48,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 489 transitions, 2246 flow [2022-11-02 21:05:48,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 489 transitions, 2244 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:05:48,441 INFO L231 Difference]: Finished difference. Result has 244 places, 308 transitions, 1150 flow [2022-11-02 21:05:48,442 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1150, PETRI_PLACES=244, PETRI_TRANSITIONS=308} [2022-11-02 21:05:48,445 INFO L287 CegarLoopForPetriNet]: 223 programPoint places, 21 predicate places. [2022-11-02 21:05:48,445 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 308 transitions, 1150 flow [2022-11-02 21:05:48,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.16666666666666) internal successors, (811), 6 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:48,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:05:48,446 INFO L208 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] [2022-11-02 21:05:48,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:48,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:48,665 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:05:48,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:48,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1009204055, now seen corresponding path program 1 times [2022-11-02 21:05:48,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:48,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146598215] [2022-11-02 21:05:48,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:48,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:48,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:48,668 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:48,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:05:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:48,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 21:05:48,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:48,847 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-02 21:05:48,873 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 30 [2022-11-02 21:05:48,931 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:05:48,932 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 47 [2022-11-02 21:05:49,007 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:05:49,008 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 64 [2022-11-02 21:05:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:49,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:49,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:49,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146598215] [2022-11-02 21:05:49,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146598215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:49,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:49,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:05:49,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226473422] [2022-11-02 21:05:49,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:49,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:05:49,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:49,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:05:49,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:05:49,095 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 238 [2022-11-02 21:05:49,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 308 transitions, 1150 flow. Second operand has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:49,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:05:49,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 238 [2022-11-02 21:05:49,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:05:57,378 INFO L130 PetriNetUnfolder]: 11656/31592 cut-off events. [2022-11-02 21:05:57,378 INFO L131 PetriNetUnfolder]: For 18640/18758 co-relation queries the response was YES. [2022-11-02 21:05:57,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75059 conditions, 31592 events. 11656/31592 cut-off events. For 18640/18758 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 299780 event pairs, 6320 based on Foata normal form. 8/29380 useless extension candidates. Maximal degree in co-relation 74985. Up to 19882 conditions per place. [2022-11-02 21:05:57,647 INFO L137 encePairwiseOnDemand]: 223/238 looper letters, 373 selfloop transitions, 78 changer transitions 0/577 dead transitions. [2022-11-02 21:05:57,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 577 transitions, 3270 flow [2022-11-02 21:05:57,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:05:57,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:05:57,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1068 transitions. [2022-11-02 21:05:57,654 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7478991596638656 [2022-11-02 21:05:57,654 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1068 transitions. [2022-11-02 21:05:57,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1068 transitions. [2022-11-02 21:05:57,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:05:57,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1068 transitions. [2022-11-02 21:05:57,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:57,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:57,667 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:57,668 INFO L175 Difference]: Start difference. First operand has 244 places, 308 transitions, 1150 flow. Second operand 6 states and 1068 transitions. [2022-11-02 21:05:57,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 577 transitions, 3270 flow [2022-11-02 21:05:57,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 577 transitions, 3270 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:05:57,762 INFO L231 Difference]: Finished difference. Result has 254 places, 385 transitions, 1968 flow [2022-11-02 21:05:57,763 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1968, PETRI_PLACES=254, PETRI_TRANSITIONS=385} [2022-11-02 21:05:57,764 INFO L287 CegarLoopForPetriNet]: 223 programPoint places, 31 predicate places. [2022-11-02 21:05:57,764 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 385 transitions, 1968 flow [2022-11-02 21:05:57,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:57,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:05:57,765 INFO L208 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] [2022-11-02 21:05:57,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:57,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:57,982 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:05:57,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:57,983 INFO L85 PathProgramCache]: Analyzing trace with hash 157236464, now seen corresponding path program 1 times [2022-11-02 21:05:57,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:57,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755175101] [2022-11-02 21:05:57,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:57,983 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:57,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:57,986 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:58,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:05:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:58,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 21:05:58,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:58,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:05:58,186 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 22 [2022-11-02 21:05:58,223 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:05:58,224 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 36 [2022-11-02 21:05:58,285 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:05:58,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 50 [2022-11-02 21:05:58,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:58,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:58,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:58,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755175101] [2022-11-02 21:05:58,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755175101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:58,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:58,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:05:58,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403115613] [2022-11-02 21:05:58,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:58,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:05:58,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:58,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:05:58,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:05:58,343 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 238 [2022-11-02 21:05:58,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 385 transitions, 1968 flow. Second operand has 6 states, 6 states have (on average 136.16666666666666) internal successors, (817), 6 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:58,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:05:58,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 238 [2022-11-02 21:05:58,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:07,095 INFO L130 PetriNetUnfolder]: 13545/35609 cut-off events. [2022-11-02 21:06:07,095 INFO L131 PetriNetUnfolder]: For 29227/29404 co-relation queries the response was YES. [2022-11-02 21:06:07,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93068 conditions, 35609 events. 13545/35609 cut-off events. For 29227/29404 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 342122 event pairs, 4776 based on Foata normal form. 0/33378 useless extension candidates. Maximal degree in co-relation 92989. Up to 18056 conditions per place. [2022-11-02 21:06:07,405 INFO L137 encePairwiseOnDemand]: 227/238 looper letters, 458 selfloop transitions, 66 changer transitions 0/650 dead transitions. [2022-11-02 21:06:07,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 650 transitions, 4264 flow [2022-11-02 21:06:07,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:06:07,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:06:07,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1057 transitions. [2022-11-02 21:06:07,411 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7401960784313726 [2022-11-02 21:06:07,411 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1057 transitions. [2022-11-02 21:06:07,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1057 transitions. [2022-11-02 21:06:07,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:07,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1057 transitions. [2022-11-02 21:06:07,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 176.16666666666666) internal successors, (1057), 6 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:07,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:07,425 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:07,425 INFO L175 Difference]: Start difference. First operand has 254 places, 385 transitions, 1968 flow. Second operand 6 states and 1057 transitions. [2022-11-02 21:06:07,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 650 transitions, 4264 flow [2022-11-02 21:06:07,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 650 transitions, 4264 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:06:07,582 INFO L231 Difference]: Finished difference. Result has 264 places, 447 transitions, 2730 flow [2022-11-02 21:06:07,583 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2730, PETRI_PLACES=264, PETRI_TRANSITIONS=447} [2022-11-02 21:06:07,587 INFO L287 CegarLoopForPetriNet]: 223 programPoint places, 41 predicate places. [2022-11-02 21:06:07,587 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 447 transitions, 2730 flow [2022-11-02 21:06:07,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.16666666666666) internal successors, (817), 6 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:07,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:07,588 INFO L208 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] [2022-11-02 21:06:07,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:07,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:07,810 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reader_nowait_fnErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:06:07,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:07,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1611811336, now seen corresponding path program 1 times [2022-11-02 21:06:07,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:07,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364071426] [2022-11-02 21:06:07,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:07,811 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:07,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:07,812 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:07,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:06:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:08,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 21:06:08,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:08,033 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-11-02 21:06:08,045 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 26 [2022-11-02 21:06:08,078 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:06:08,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 42 [2022-11-02 21:06:08,125 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:06:08,126 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 58 [2022-11-02 21:06:08,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:06:08,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:06:08,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:08,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364071426] [2022-11-02 21:06:08,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364071426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:08,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:08,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:06:08,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827728712] [2022-11-02 21:06:08,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:08,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:06:08,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:08,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:06:08,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:06:08,340 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 238 [2022-11-02 21:06:08,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 447 transitions, 2730 flow. Second operand has 6 states, 6 states have (on average 138.33333333333334) internal successors, (830), 6 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:08,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:08,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 238 [2022-11-02 21:06:08,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:18,757 INFO L130 PetriNetUnfolder]: 15015/40762 cut-off events. [2022-11-02 21:06:18,758 INFO L131 PetriNetUnfolder]: For 42036/42336 co-relation queries the response was YES. [2022-11-02 21:06:18,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110654 conditions, 40762 events. 15015/40762 cut-off events. For 42036/42336 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 403394 event pairs, 8126 based on Foata normal form. 66/38582 useless extension candidates. Maximal degree in co-relation 110570. Up to 27986 conditions per place. [2022-11-02 21:06:19,133 INFO L137 encePairwiseOnDemand]: 203/238 looper letters, 356 selfloop transitions, 172 changer transitions 0/654 dead transitions. [2022-11-02 21:06:19,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 654 transitions, 4778 flow [2022-11-02 21:06:19,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:06:19,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:06:19,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1063 transitions. [2022-11-02 21:06:19,372 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7443977591036415 [2022-11-02 21:06:19,372 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1063 transitions. [2022-11-02 21:06:19,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1063 transitions. [2022-11-02 21:06:19,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:19,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1063 transitions. [2022-11-02 21:06:19,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 177.16666666666666) internal successors, (1063), 6 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:19,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:19,378 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:19,387 INFO L175 Difference]: Start difference. First operand has 264 places, 447 transitions, 2730 flow. Second operand 6 states and 1063 transitions. [2022-11-02 21:06:19,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 654 transitions, 4778 flow [2022-11-02 21:06:19,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 654 transitions, 4778 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:06:19,531 INFO L231 Difference]: Finished difference. Result has 274 places, 594 transitions, 4302 flow [2022-11-02 21:06:19,532 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=2730, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4302, PETRI_PLACES=274, PETRI_TRANSITIONS=594} [2022-11-02 21:06:19,533 INFO L287 CegarLoopForPetriNet]: 223 programPoint places, 51 predicate places. [2022-11-02 21:06:19,533 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 594 transitions, 4302 flow [2022-11-02 21:06:19,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.33333333333334) internal successors, (830), 6 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:19,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:19,534 INFO L208 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] [2022-11-02 21:06:19,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-02 21:06:19,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:19,739 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:06:19,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:19,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1896658099, now seen corresponding path program 1 times [2022-11-02 21:06:19,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:19,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392916692] [2022-11-02 21:06:19,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:19,740 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:19,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:19,741 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:19,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:06:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:19,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 21:06:19,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:19,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-11-02 21:06:19,986 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 34 [2022-11-02 21:06:20,044 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:06:20,045 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 53 [2022-11-02 21:06:20,125 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:06:20,126 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 72 [2022-11-02 21:06:20,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:06:20,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:06:20,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:20,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392916692] [2022-11-02 21:06:20,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1392916692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:20,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:20,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:06:20,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857983810] [2022-11-02 21:06:20,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:20,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:06:20,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:20,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:06:20,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:06:20,213 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 238 [2022-11-02 21:06:20,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 594 transitions, 4302 flow. Second operand has 6 states, 6 states have (on average 135.33333333333334) internal successors, (812), 6 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:20,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:20,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 238 [2022-11-02 21:06:20,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:33,322 INFO L130 PetriNetUnfolder]: 16462/43085 cut-off events. [2022-11-02 21:06:33,322 INFO L131 PetriNetUnfolder]: For 65387/65512 co-relation queries the response was YES. [2022-11-02 21:06:33,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133813 conditions, 43085 events. 16462/43085 cut-off events. For 65387/65512 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 424203 event pairs, 8351 based on Foata normal form. 0/41068 useless extension candidates. Maximal degree in co-relation 133724. Up to 30988 conditions per place. [2022-11-02 21:06:33,950 INFO L137 encePairwiseOnDemand]: 207/238 looper letters, 482 selfloop transitions, 167 changer transitions 0/773 dead transitions. [2022-11-02 21:06:33,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 773 transitions, 6474 flow [2022-11-02 21:06:33,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:06:33,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:06:33,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1024 transitions. [2022-11-02 21:06:33,954 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7170868347338936 [2022-11-02 21:06:33,955 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1024 transitions. [2022-11-02 21:06:33,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1024 transitions. [2022-11-02 21:06:33,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:33,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1024 transitions. [2022-11-02 21:06:33,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 170.66666666666666) internal successors, (1024), 6 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:33,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:33,961 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:33,961 INFO L175 Difference]: Start difference. First operand has 274 places, 594 transitions, 4302 flow. Second operand 6 states and 1024 transitions. [2022-11-02 21:06:33,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 773 transitions, 6474 flow [2022-11-02 21:06:34,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 773 transitions, 6242 flow, removed 116 selfloop flow, removed 0 redundant places. [2022-11-02 21:06:34,171 INFO L231 Difference]: Finished difference. Result has 284 places, 721 transitions, 5510 flow [2022-11-02 21:06:34,172 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=4082, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5510, PETRI_PLACES=284, PETRI_TRANSITIONS=721} [2022-11-02 21:06:34,173 INFO L287 CegarLoopForPetriNet]: 223 programPoint places, 61 predicate places. [2022-11-02 21:06:34,173 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 721 transitions, 5510 flow [2022-11-02 21:06:34,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.33333333333334) internal successors, (812), 6 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:34,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:34,174 INFO L208 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] [2022-11-02 21:06:34,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:34,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:34,374 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 21:06:34,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:34,375 INFO L85 PathProgramCache]: Analyzing trace with hash 31682943, now seen corresponding path program 1 times [2022-11-02 21:06:34,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:34,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694952204] [2022-11-02 21:06:34,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:34,376 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:34,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:34,377 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:34,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d43931-caea-45e4-82aa-a3d70b6476d0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:06:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:34,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-02 21:06:34,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:34,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-02 21:06:34,612 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 21:06:34,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-02 21:06:34,796 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:06:34,934 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 21:06:35,539 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 21:06:35,714 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-02 21:06:35,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:35,832 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-02 21:06:35,860 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 24 [2022-11-02 21:06:35,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 38 [2022-11-02 21:06:36,097 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 52 [2022-11-02 21:06:36,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,246 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 71 [2022-11-02 21:06:36,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,296 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 71 [2022-11-02 21:06:36,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,341 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 68 [2022-11-02 21:06:36,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 66 [2022-11-02 21:06:36,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,670 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 68 [2022-11-02 21:06:36,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,715 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 68 [2022-11-02 21:06:36,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,753 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 68 [2022-11-02 21:06:36,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:06:36,867 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:06:36,868 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 66 [2022-11-02 21:06:36,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:06:36,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:06:36,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:36,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694952204] [2022-11-02 21:06:36,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694952204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:36,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:36,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-02 21:06:36,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490671164] [2022-11-02 21:06:36,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:36,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-02 21:06:36,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:36,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-02 21:06:36,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2022-11-02 21:06:36,968 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 238 [2022-11-02 21:06:36,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 721 transitions, 5510 flow. Second operand has 25 states, 25 states have (on average 90.84) internal successors, (2271), 25 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:36,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:36,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 238 [2022-11-02 21:06:36,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand