./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 e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8 --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-e04fb08 [2022-11-16 12:14:53,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:14:53,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:14:53,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:14:53,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:14:53,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:14:53,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:14:53,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:14:53,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:14:53,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:14:53,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:14:53,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:14:53,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:14:53,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:14:53,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:14:53,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:14:53,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:14:53,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:14:53,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:14:53,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:14:53,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:14:53,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:14:53,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:14:53,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:14:53,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:14:53,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:14:53,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:14:53,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:14:53,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:14:53,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:14:53,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:14:53,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:14:53,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:14:53,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:14:53,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:14:53,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:14:53,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:14:53,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:14:53,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:14:53,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:14:53,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:14:53,267 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-16 12:14:53,318 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:14:53,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:14:53,319 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:14:53,319 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:14:53,320 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:14:53,321 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:14:53,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:14:53,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:14:53,322 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:14:53,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:14:53,323 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:14:53,323 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:14:53,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:14:53,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:14:53,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:14:53,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:14:53,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:14:53,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:14:53,325 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 12:14:53,325 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:14:53,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:14:53,326 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:14:53,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:14:53,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:14:53,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:14:53,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:14:53,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:14:53,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:14:53,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:14:53,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:14:53,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:14:53,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:14:53,330 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:14:53,330 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:14:53,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:14:53,331 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a956b76a4ba98ce13df4d83ef2fb7ffa0973225ecb152c14bcfbb55b6546601 [2022-11-16 12:14:53,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:14:53,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:14:53,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:14:53,655 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:14:53,656 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:14:53,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2022-11-16 12:14:53,734 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/data/952ba0720/980902a9bfb443a3a67b50f983f31e6b/FLAGc6a1e52f1 [2022-11-16 12:14:54,267 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:14:54,268 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2022-11-16 12:14:54,282 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/data/952ba0720/980902a9bfb443a3a67b50f983f31e6b/FLAGc6a1e52f1 [2022-11-16 12:14:54,699 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/data/952ba0720/980902a9bfb443a3a67b50f983f31e6b [2022-11-16 12:14:54,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:14:54,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:14:54,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:14:54,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:14:54,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:14:54,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:14:54" (1/1) ... [2022-11-16 12:14:54,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283afa31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:54, skipping insertion in model container [2022-11-16 12:14:54,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:14:54" (1/1) ... [2022-11-16 12:14:54,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:14:54,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:14:54,969 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 12:14:55,365 WARN L229 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39095,39108] [2022-11-16 12:14:55,370 WARN L229 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39180,39193] [2022-11-16 12:14:55,371 WARN L229 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39232,39245] [2022-11-16 12:14:55,382 WARN L229 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39641,39654] [2022-11-16 12:14:55,384 WARN L229 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39726,39739] [2022-11-16 12:14:55,386 WARN L229 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39778,39791] [2022-11-16 12:14:55,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:14:55,407 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:14:55,425 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 12:14:55,483 WARN L229 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39095,39108] [2022-11-16 12:14:55,484 WARN L229 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39180,39193] [2022-11-16 12:14:55,485 WARN L229 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39232,39245] [2022-11-16 12:14:55,491 WARN L229 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39641,39654] [2022-11-16 12:14:55,492 WARN L229 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39726,39739] [2022-11-16 12:14:55,494 WARN L229 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39778,39791] [2022-11-16 12:14:55,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:14:55,551 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:14:55,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:55 WrapperNode [2022-11-16 12:14:55,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:14:55,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:14:55,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:14:55,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:14:55,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:55" (1/1) ... [2022-11-16 12:14:55,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:55" (1/1) ... [2022-11-16 12:14:55,639 INFO L138 Inliner]: procedures = 225, calls = 43, calls flagged for inlining = 10, calls inlined = 7, statements flattened = 198 [2022-11-16 12:14:55,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:14:55,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:14:55,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:14:55,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:14:55,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:55" (1/1) ... [2022-11-16 12:14:55,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:55" (1/1) ... [2022-11-16 12:14:55,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:55" (1/1) ... [2022-11-16 12:14:55,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:55" (1/1) ... [2022-11-16 12:14:55,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:55" (1/1) ... [2022-11-16 12:14:55,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:55" (1/1) ... [2022-11-16 12:14:55,679 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:55" (1/1) ... [2022-11-16 12:14:55,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:55" (1/1) ... [2022-11-16 12:14:55,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:14:55,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:14:55,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:14:55,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:14:55,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:55" (1/1) ... [2022-11-16 12:14:55,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:14:55,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:55,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:14:55,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:14:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:14:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:14:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:14:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:14:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:14:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:14:55,771 INFO L130 BoogieDeclarations]: Found specification of procedure reader_nowait_fn [2022-11-16 12:14:55,771 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_nowait_fn [2022-11-16 12:14:55,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:14:55,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:14:55,773 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:14:55,915 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:14:55,917 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:14:56,636 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:14:56,646 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:14:56,646 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 12:14:56,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:14:56 BoogieIcfgContainer [2022-11-16 12:14:56,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:14:56,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:14:56,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:14:56,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:14:56,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:14:54" (1/3) ... [2022-11-16 12:14:56,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35befdb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:14:56, skipping insertion in model container [2022-11-16 12:14:56,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:55" (2/3) ... [2022-11-16 12:14:56,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35befdb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:14:56, skipping insertion in model container [2022-11-16 12:14:56,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:14:56" (3/3) ... [2022-11-16 12:14:56,659 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_1w1r-1.i [2022-11-16 12:14:56,668 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:14:56,679 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:14:56,680 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-11-16 12:14:56,680 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:14:56,794 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 12:14:56,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 238 transitions, 484 flow [2022-11-16 12:14:56,946 INFO L130 PetriNetUnfolder]: 9/237 cut-off events. [2022-11-16 12:14:56,946 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:14:56,954 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 515 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. [2022-11-16 12:14:56,955 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 238 transitions, 484 flow [2022-11-16 12:14:56,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 228 transitions, 459 flow [2022-11-16 12:14:56,973 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:14:56,980 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;@319fc603, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:14:56,981 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-16 12:14:56,988 INFO L130 PetriNetUnfolder]: 0/31 cut-off events. [2022-11-16 12:14:56,988 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:14:56,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:14:56,989 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:56,990 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)] === [2022-11-16 12:14:56,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:56,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1177147086, now seen corresponding path program 1 times [2022-11-16 12:14:57,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:57,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653596401] [2022-11-16 12:14:57,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:57,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:57,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:57,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:57,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653596401] [2022-11-16 12:14:57,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653596401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:57,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:57,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:14:57,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349782] [2022-11-16 12:14:57,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:57,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:14:57,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:57,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:14:57,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:14:57,877 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 238 [2022-11-16 12:14:57,885 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) [2022-11-16 12:14:57,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:14:57,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 238 [2022-11-16 12:14:57,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:14:59,304 INFO L130 PetriNetUnfolder]: 1707/5516 cut-off events. [2022-11-16 12:14:59,305 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:14:59,318 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 111. Compared 44896 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. [2022-11-16 12:14:59,365 INFO L137 encePairwiseOnDemand]: 226/238 looper letters, 91 selfloop transitions, 5 changer transitions 0/221 dead transitions. [2022-11-16 12:14:59,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 221 transitions, 637 flow [2022-11-16 12:14:59,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:14:59,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:14:59,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 907 transitions. [2022-11-16 12:14:59,382 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6351540616246498 [2022-11-16 12:14:59,383 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 907 transitions. [2022-11-16 12:14:59,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 907 transitions. [2022-11-16 12:14:59,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:14:59,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 907 transitions. [2022-11-16 12:14:59,394 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) [2022-11-16 12:14:59,402 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) [2022-11-16 12:14:59,404 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) [2022-11-16 12:14:59,406 INFO L175 Difference]: Start difference. First operand has 223 places, 228 transitions, 459 flow. Second operand 6 states and 907 transitions. [2022-11-16 12:14:59,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 221 transitions, 637 flow [2022-11-16 12:14:59,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 221 transitions, 636 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:14:59,416 INFO L231 Difference]: Finished difference. Result has 226 places, 221 transitions, 454 flow [2022-11-16 12:14:59,418 INFO L271 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} [2022-11-16 12:14:59,422 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 3 predicate places. [2022-11-16 12:14:59,422 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 221 transitions, 454 flow [2022-11-16 12:14:59,423 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) [2022-11-16 12:14:59,423 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:14:59,423 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:59,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:14:59,424 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)] === [2022-11-16 12:14:59,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:59,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1648035877, now seen corresponding path program 1 times [2022-11-16 12:14:59,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:59,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162445768] [2022-11-16 12:14:59,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:59,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:59,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:59,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:59,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162445768] [2022-11-16 12:14:59,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162445768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:59,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:59,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:14:59,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467648354] [2022-11-16 12:14:59,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:59,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:14:59,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:59,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:14:59,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:14:59,829 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 238 [2022-11-16 12:14:59,831 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) [2022-11-16 12:14:59,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:14:59,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 238 [2022-11-16 12:14:59,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:15:00,993 INFO L130 PetriNetUnfolder]: 1707/5515 cut-off events. [2022-11-16 12:15:00,994 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:15:01,002 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 45068 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. [2022-11-16 12:15:01,022 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 90 selfloop transitions, 5 changer transitions 0/220 dead transitions. [2022-11-16 12:15:01,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 220 transitions, 642 flow [2022-11-16 12:15:01,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:15:01,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:15:01,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 900 transitions. [2022-11-16 12:15:01,025 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6302521008403361 [2022-11-16 12:15:01,026 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 900 transitions. [2022-11-16 12:15:01,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 900 transitions. [2022-11-16 12:15:01,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:15:01,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 900 transitions. [2022-11-16 12:15:01,029 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) [2022-11-16 12:15:01,032 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) [2022-11-16 12:15:01,033 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) [2022-11-16 12:15:01,034 INFO L175 Difference]: Start difference. First operand has 226 places, 221 transitions, 454 flow. Second operand 6 states and 900 transitions. [2022-11-16 12:15:01,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 220 transitions, 642 flow [2022-11-16 12:15:01,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 220 transitions, 632 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:15:01,042 INFO L231 Difference]: Finished difference. Result has 225 places, 220 transitions, 452 flow [2022-11-16 12:15:01,042 INFO L271 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} [2022-11-16 12:15:01,043 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 2 predicate places. [2022-11-16 12:15:01,043 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 220 transitions, 452 flow [2022-11-16 12:15:01,044 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) [2022-11-16 12:15:01,044 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:15:01,045 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:01,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:15:01,045 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)] === [2022-11-16 12:15:01,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:01,046 INFO L85 PathProgramCache]: Analyzing trace with hash -765257624, now seen corresponding path program 1 times [2022-11-16 12:15:01,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:01,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231422201] [2022-11-16 12:15:01,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:01,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:01,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:01,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:01,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231422201] [2022-11-16 12:15:01,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231422201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:01,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:01,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:15:01,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614226935] [2022-11-16 12:15:01,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:01,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:15:01,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:01,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:15:01,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:15:01,534 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 238 [2022-11-16 12:15:01,535 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) [2022-11-16 12:15:01,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:15:01,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 238 [2022-11-16 12:15:01,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:15:03,543 INFO L130 PetriNetUnfolder]: 2913/8124 cut-off events. [2022-11-16 12:15:03,543 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:15:03,556 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 118. Compared 65087 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. [2022-11-16 12:15:03,585 INFO L137 encePairwiseOnDemand]: 217/238 looper letters, 242 selfloop transitions, 43 changer transitions 0/410 dead transitions. [2022-11-16 12:15:03,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 410 transitions, 1402 flow [2022-11-16 12:15:03,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:15:03,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:15:03,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1091 transitions. [2022-11-16 12:15:03,588 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7640056022408963 [2022-11-16 12:15:03,589 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1091 transitions. [2022-11-16 12:15:03,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1091 transitions. [2022-11-16 12:15:03,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:15:03,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1091 transitions. [2022-11-16 12:15:03,593 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) [2022-11-16 12:15:03,596 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) [2022-11-16 12:15:03,597 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) [2022-11-16 12:15:03,597 INFO L175 Difference]: Start difference. First operand has 225 places, 220 transitions, 452 flow. Second operand 6 states and 1091 transitions. [2022-11-16 12:15:03,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 410 transitions, 1402 flow [2022-11-16 12:15:03,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 410 transitions, 1392 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:15:03,606 INFO L231 Difference]: Finished difference. Result has 230 places, 262 transitions, 738 flow [2022-11-16 12:15:03,606 INFO L271 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} [2022-11-16 12:15:03,607 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 7 predicate places. [2022-11-16 12:15:03,607 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 262 transitions, 738 flow [2022-11-16 12:15:03,608 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) [2022-11-16 12:15:03,608 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:15:03,609 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:03,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:15:03,609 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)] === [2022-11-16 12:15:03,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:03,610 INFO L85 PathProgramCache]: Analyzing trace with hash -942807167, now seen corresponding path program 1 times [2022-11-16 12:15:03,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:03,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798970520] [2022-11-16 12:15:03,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:03,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:03,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:03,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:03,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798970520] [2022-11-16 12:15:03,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798970520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:03,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:03,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:15:03,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209256571] [2022-11-16 12:15:03,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:03,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:15:03,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:03,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:15:03,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:15:03,677 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 238 [2022-11-16 12:15:03,678 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) [2022-11-16 12:15:03,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:15:03,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 238 [2022-11-16 12:15:03,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:15:04,146 INFO L130 PetriNetUnfolder]: 295/2450 cut-off events. [2022-11-16 12:15:04,147 INFO L131 PetriNetUnfolder]: For 236/268 co-relation queries the response was YES. [2022-11-16 12:15:04,156 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 41. Compared 17645 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. [2022-11-16 12:15:04,165 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 7 selfloop transitions, 2 changer transitions 0/265 dead transitions. [2022-11-16 12:15:04,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 265 transitions, 762 flow [2022-11-16 12:15:04,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:15:04,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:15:04,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 685 transitions. [2022-11-16 12:15:04,168 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9593837535014006 [2022-11-16 12:15:04,168 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 685 transitions. [2022-11-16 12:15:04,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 685 transitions. [2022-11-16 12:15:04,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:15:04,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 685 transitions. [2022-11-16 12:15:04,172 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) [2022-11-16 12:15:04,174 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) [2022-11-16 12:15:04,175 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) [2022-11-16 12:15:04,175 INFO L175 Difference]: Start difference. First operand has 230 places, 262 transitions, 738 flow. Second operand 3 states and 685 transitions. [2022-11-16 12:15:04,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 265 transitions, 762 flow [2022-11-16 12:15:04,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 265 transitions, 762 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:15:04,186 INFO L231 Difference]: Finished difference. Result has 233 places, 263 transitions, 750 flow [2022-11-16 12:15:04,187 INFO L271 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} [2022-11-16 12:15:04,188 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 10 predicate places. [2022-11-16 12:15:04,188 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 263 transitions, 750 flow [2022-11-16 12:15:04,189 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) [2022-11-16 12:15:04,189 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:15:04,189 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:04,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:15:04,190 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)] === [2022-11-16 12:15:04,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:04,191 INFO L85 PathProgramCache]: Analyzing trace with hash -916765828, now seen corresponding path program 1 times [2022-11-16 12:15:04,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:04,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867731808] [2022-11-16 12:15:04,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:04,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:04,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:04,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:04,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867731808] [2022-11-16 12:15:04,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867731808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:04,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:04,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:15:04,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385709111] [2022-11-16 12:15:04,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:04,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:15:04,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:04,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:15:04,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:15:04,267 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 238 [2022-11-16 12:15:04,268 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) [2022-11-16 12:15:04,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:15:04,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 238 [2022-11-16 12:15:04,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:15:05,169 INFO L130 PetriNetUnfolder]: 543/3840 cut-off events. [2022-11-16 12:15:05,172 INFO L131 PetriNetUnfolder]: For 462/523 co-relation queries the response was YES. [2022-11-16 12:15:05,193 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 30710 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. [2022-11-16 12:15:05,208 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 10 selfloop transitions, 2 changer transitions 0/267 dead transitions. [2022-11-16 12:15:05,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 267 transitions, 782 flow [2022-11-16 12:15:05,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:15:05,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:15:05,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2022-11-16 12:15:05,212 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9551820728291317 [2022-11-16 12:15:05,212 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2022-11-16 12:15:05,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2022-11-16 12:15:05,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:15:05,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2022-11-16 12:15:05,215 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) [2022-11-16 12:15:05,217 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) [2022-11-16 12:15:05,218 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) [2022-11-16 12:15:05,218 INFO L175 Difference]: Start difference. First operand has 233 places, 263 transitions, 750 flow. Second operand 3 states and 682 transitions. [2022-11-16 12:15:05,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 267 transitions, 782 flow [2022-11-16 12:15:05,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 267 transitions, 780 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:15:05,234 INFO L231 Difference]: Finished difference. Result has 235 places, 264 transitions, 760 flow [2022-11-16 12:15:05,235 INFO L271 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} [2022-11-16 12:15:05,238 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 12 predicate places. [2022-11-16 12:15:05,238 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 264 transitions, 760 flow [2022-11-16 12:15:05,239 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) [2022-11-16 12:15:05,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:15:05,239 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:05,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:15:05,240 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)] === [2022-11-16 12:15:05,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:05,241 INFO L85 PathProgramCache]: Analyzing trace with hash 159417040, now seen corresponding path program 1 times [2022-11-16 12:15:05,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:05,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932552530] [2022-11-16 12:15:05,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:05,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:05,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:05,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932552530] [2022-11-16 12:15:05,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932552530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:05,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:05,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:15:05,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355849887] [2022-11-16 12:15:05,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:05,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:15:05,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:05,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:15:05,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:15:05,682 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 238 [2022-11-16 12:15:05,683 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) [2022-11-16 12:15:05,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:15:05,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 238 [2022-11-16 12:15:05,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:15:11,227 INFO L130 PetriNetUnfolder]: 11063/29239 cut-off events. [2022-11-16 12:15:11,228 INFO L131 PetriNetUnfolder]: For 8988/9177 co-relation queries the response was YES. [2022-11-16 12:15:11,308 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 273042 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. [2022-11-16 12:15:11,663 INFO L137 encePairwiseOnDemand]: 214/238 looper letters, 319 selfloop transitions, 45 changer transitions 0/489 dead transitions. [2022-11-16 12:15:11,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 489 transitions, 2246 flow [2022-11-16 12:15:11,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:15:11,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:15:11,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1069 transitions. [2022-11-16 12:15:11,667 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7485994397759104 [2022-11-16 12:15:11,667 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1069 transitions. [2022-11-16 12:15:11,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1069 transitions. [2022-11-16 12:15:11,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:15:11,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1069 transitions. [2022-11-16 12:15:11,670 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) [2022-11-16 12:15:11,673 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) [2022-11-16 12:15:11,674 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) [2022-11-16 12:15:11,674 INFO L175 Difference]: Start difference. First operand has 235 places, 264 transitions, 760 flow. Second operand 6 states and 1069 transitions. [2022-11-16 12:15:11,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 489 transitions, 2246 flow [2022-11-16 12:15:11,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 489 transitions, 2244 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:15:11,718 INFO L231 Difference]: Finished difference. Result has 244 places, 308 transitions, 1150 flow [2022-11-16 12:15:11,719 INFO L271 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} [2022-11-16 12:15:11,723 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 21 predicate places. [2022-11-16 12:15:11,723 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 308 transitions, 1150 flow [2022-11-16 12:15:11,724 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) [2022-11-16 12:15:11,724 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:15:11,724 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:11,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:15:11,725 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)] === [2022-11-16 12:15:11,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:11,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1457571279, now seen corresponding path program 1 times [2022-11-16 12:15:11,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:11,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912519085] [2022-11-16 12:15:11,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:11,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:12,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:12,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:12,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912519085] [2022-11-16 12:15:12,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912519085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:12,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:12,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:15:12,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807211004] [2022-11-16 12:15:12,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:12,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:15:12,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:12,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:15:12,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:15:12,132 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 238 [2022-11-16 12:15:12,134 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) [2022-11-16 12:15:12,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:15:12,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 238 [2022-11-16 12:15:12,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:15:18,504 INFO L130 PetriNetUnfolder]: 11656/31740 cut-off events. [2022-11-16 12:15:18,504 INFO L131 PetriNetUnfolder]: For 18645/18763 co-relation queries the response was YES. [2022-11-16 12:15:18,707 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 301886 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. [2022-11-16 12:15:18,831 INFO L137 encePairwiseOnDemand]: 223/238 looper letters, 373 selfloop transitions, 78 changer transitions 0/577 dead transitions. [2022-11-16 12:15:18,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 577 transitions, 3270 flow [2022-11-16 12:15:18,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:15:18,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:15:18,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1068 transitions. [2022-11-16 12:15:18,835 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7478991596638656 [2022-11-16 12:15:18,835 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1068 transitions. [2022-11-16 12:15:18,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1068 transitions. [2022-11-16 12:15:18,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:15:18,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1068 transitions. [2022-11-16 12:15:18,841 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) [2022-11-16 12:15:18,845 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) [2022-11-16 12:15:18,846 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) [2022-11-16 12:15:18,846 INFO L175 Difference]: Start difference. First operand has 244 places, 308 transitions, 1150 flow. Second operand 6 states and 1068 transitions. [2022-11-16 12:15:18,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 577 transitions, 3270 flow [2022-11-16 12:15:18,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 577 transitions, 3270 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:15:18,921 INFO L231 Difference]: Finished difference. Result has 254 places, 385 transitions, 1968 flow [2022-11-16 12:15:18,922 INFO L271 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} [2022-11-16 12:15:18,923 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 31 predicate places. [2022-11-16 12:15:18,923 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 385 transitions, 1968 flow [2022-11-16 12:15:18,924 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) [2022-11-16 12:15:18,924 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:15:18,924 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:18,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:15:18,925 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)] === [2022-11-16 12:15:18,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:18,925 INFO L85 PathProgramCache]: Analyzing trace with hash 725118963, now seen corresponding path program 1 times [2022-11-16 12:15:18,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:18,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644597155] [2022-11-16 12:15:18,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:18,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:19,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:19,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:19,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644597155] [2022-11-16 12:15:19,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644597155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:19,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:19,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:15:19,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216253955] [2022-11-16 12:15:19,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:19,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:15:19,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:19,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:15:19,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:15:19,366 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 238 [2022-11-16 12:15:19,368 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) [2022-11-16 12:15:19,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:15:19,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 238 [2022-11-16 12:15:19,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:15:26,495 INFO L130 PetriNetUnfolder]: 13545/35766 cut-off events. [2022-11-16 12:15:26,495 INFO L131 PetriNetUnfolder]: For 29241/29432 co-relation queries the response was YES. [2022-11-16 12:15:26,630 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 325. Compared 344764 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. [2022-11-16 12:15:26,762 INFO L137 encePairwiseOnDemand]: 227/238 looper letters, 458 selfloop transitions, 66 changer transitions 0/650 dead transitions. [2022-11-16 12:15:26,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 650 transitions, 4264 flow [2022-11-16 12:15:26,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:15:26,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:15:26,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1057 transitions. [2022-11-16 12:15:26,767 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7401960784313726 [2022-11-16 12:15:26,767 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1057 transitions. [2022-11-16 12:15:26,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1057 transitions. [2022-11-16 12:15:26,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:15:26,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1057 transitions. [2022-11-16 12:15:26,772 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) [2022-11-16 12:15:26,775 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) [2022-11-16 12:15:26,776 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) [2022-11-16 12:15:26,776 INFO L175 Difference]: Start difference. First operand has 254 places, 385 transitions, 1968 flow. Second operand 6 states and 1057 transitions. [2022-11-16 12:15:26,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 650 transitions, 4264 flow [2022-11-16 12:15:26,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 650 transitions, 4264 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:15:26,932 INFO L231 Difference]: Finished difference. Result has 264 places, 447 transitions, 2730 flow [2022-11-16 12:15:26,932 INFO L271 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} [2022-11-16 12:15:26,935 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 41 predicate places. [2022-11-16 12:15:26,935 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 447 transitions, 2730 flow [2022-11-16 12:15:26,936 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) [2022-11-16 12:15:26,936 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:15:26,936 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:26,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:15:26,937 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)] === [2022-11-16 12:15:26,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:26,938 INFO L85 PathProgramCache]: Analyzing trace with hash -972379362, now seen corresponding path program 1 times [2022-11-16 12:15:26,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:26,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157621979] [2022-11-16 12:15:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:26,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:27,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:27,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157621979] [2022-11-16 12:15:27,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157621979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:27,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:27,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:15:27,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721106948] [2022-11-16 12:15:27,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:27,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:15:27,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:27,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:15:27,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:15:27,637 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 238 [2022-11-16 12:15:27,638 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) [2022-11-16 12:15:27,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:15:27,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 238 [2022-11-16 12:15:27,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:15:36,137 INFO L130 PetriNetUnfolder]: 15015/40909 cut-off events. [2022-11-16 12:15:36,137 INFO L131 PetriNetUnfolder]: For 42048/42348 co-relation queries the response was YES. [2022-11-16 12:15:36,335 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 405828 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. [2022-11-16 12:15:36,446 INFO L137 encePairwiseOnDemand]: 203/238 looper letters, 356 selfloop transitions, 172 changer transitions 0/654 dead transitions. [2022-11-16 12:15:36,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 654 transitions, 4778 flow [2022-11-16 12:15:36,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:15:36,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:15:36,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1063 transitions. [2022-11-16 12:15:36,451 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7443977591036415 [2022-11-16 12:15:36,451 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1063 transitions. [2022-11-16 12:15:36,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1063 transitions. [2022-11-16 12:15:36,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:15:36,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1063 transitions. [2022-11-16 12:15:36,455 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) [2022-11-16 12:15:36,458 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) [2022-11-16 12:15:36,459 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) [2022-11-16 12:15:36,459 INFO L175 Difference]: Start difference. First operand has 264 places, 447 transitions, 2730 flow. Second operand 6 states and 1063 transitions. [2022-11-16 12:15:36,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 654 transitions, 4778 flow [2022-11-16 12:15:36,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 654 transitions, 4778 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:15:36,649 INFO L231 Difference]: Finished difference. Result has 274 places, 594 transitions, 4302 flow [2022-11-16 12:15:36,650 INFO L271 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} [2022-11-16 12:15:36,650 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 51 predicate places. [2022-11-16 12:15:36,651 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 594 transitions, 4302 flow [2022-11-16 12:15:36,651 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) [2022-11-16 12:15:36,651 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:15:36,652 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:36,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:15:36,652 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)] === [2022-11-16 12:15:36,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:36,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1457297609, now seen corresponding path program 1 times [2022-11-16 12:15:36,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:36,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037771004] [2022-11-16 12:15:36,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:36,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:37,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:37,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:37,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037771004] [2022-11-16 12:15:37,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037771004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:37,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:37,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:15:37,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403894337] [2022-11-16 12:15:37,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:37,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:15:37,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:37,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:15:37,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:15:37,225 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 238 [2022-11-16 12:15:37,226 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) [2022-11-16 12:15:37,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:15:37,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 238 [2022-11-16 12:15:37,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:15:47,318 INFO L130 PetriNetUnfolder]: 16462/43320 cut-off events. [2022-11-16 12:15:47,319 INFO L131 PetriNetUnfolder]: For 65348/65465 co-relation queries the response was YES. [2022-11-16 12:15:47,562 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 428063 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. [2022-11-16 12:15:47,686 INFO L137 encePairwiseOnDemand]: 207/238 looper letters, 482 selfloop transitions, 167 changer transitions 0/773 dead transitions. [2022-11-16 12:15:47,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 773 transitions, 6474 flow [2022-11-16 12:15:47,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:15:47,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:15:47,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1024 transitions. [2022-11-16 12:15:47,694 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7170868347338936 [2022-11-16 12:15:47,694 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1024 transitions. [2022-11-16 12:15:47,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1024 transitions. [2022-11-16 12:15:47,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:15:47,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1024 transitions. [2022-11-16 12:15:47,698 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) [2022-11-16 12:15:47,702 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) [2022-11-16 12:15:47,703 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) [2022-11-16 12:15:47,703 INFO L175 Difference]: Start difference. First operand has 274 places, 594 transitions, 4302 flow. Second operand 6 states and 1024 transitions. [2022-11-16 12:15:47,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 773 transitions, 6474 flow [2022-11-16 12:15:48,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 773 transitions, 6242 flow, removed 116 selfloop flow, removed 0 redundant places. [2022-11-16 12:15:48,023 INFO L231 Difference]: Finished difference. Result has 284 places, 721 transitions, 5510 flow [2022-11-16 12:15:48,024 INFO L271 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} [2022-11-16 12:15:48,024 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 61 predicate places. [2022-11-16 12:15:48,025 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 721 transitions, 5510 flow [2022-11-16 12:15:48,025 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) [2022-11-16 12:15:48,025 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:15:48,026 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:48,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:15:48,026 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)] === [2022-11-16 12:15:48,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:48,027 INFO L85 PathProgramCache]: Analyzing trace with hash -310920971, now seen corresponding path program 1 times [2022-11-16 12:15:48,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:48,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770650779] [2022-11-16 12:15:48,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:48,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:50,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:15:50,255 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:776) 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) [2022-11-16 12:15:50,260 INFO L158 Benchmark]: Toolchain (without parser) took 55552.33ms. Allocated memory was 98.6MB in the beginning and 12.9GB in the end (delta: 12.8GB). Free memory was 62.0MB in the beginning and 10.8GB in the end (delta: -10.7GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. [2022-11-16 12:15:50,260 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 98.6MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:15:50,261 INFO L158 Benchmark]: CACSL2BoogieTranslator took 843.46ms. Allocated memory is still 98.6MB. Free memory was 61.8MB in the beginning and 58.8MB in the end (delta: 3.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 12:15:50,261 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.57ms. Allocated memory is still 98.6MB. Free memory was 58.8MB in the beginning and 55.3MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:15:50,261 INFO L158 Benchmark]: Boogie Preprocessor took 44.03ms. Allocated memory is still 98.6MB. Free memory was 55.3MB in the beginning and 52.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 12:15:50,262 INFO L158 Benchmark]: RCFGBuilder took 964.00ms. Allocated memory was 98.6MB in the beginning and 140.5MB in the end (delta: 41.9MB). Free memory was 52.2MB in the beginning and 101.3MB in the end (delta: -49.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-16 12:15:50,262 INFO L158 Benchmark]: TraceAbstraction took 53607.24ms. Allocated memory was 140.5MB in the beginning and 12.9GB in the end (delta: 12.8GB). Free memory was 101.1MB in the beginning and 10.8GB in the end (delta: -10.7GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. [2022-11-16 12:15:50,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 98.6MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 843.46ms. Allocated memory is still 98.6MB. Free memory was 61.8MB in the beginning and 58.8MB in the end (delta: 3.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.57ms. Allocated memory is still 98.6MB. Free memory was 58.8MB in the beginning and 55.3MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.03ms. Allocated memory is still 98.6MB. Free memory was 55.3MB in the beginning and 52.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 964.00ms. Allocated memory was 98.6MB in the beginning and 140.5MB in the end (delta: 41.9MB). Free memory was 52.2MB in the beginning and 101.3MB in the end (delta: -49.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 53607.24ms. Allocated memory was 140.5MB in the beginning and 12.9GB in the end (delta: 12.8GB). Free memory was 101.1MB in the beginning and 10.8GB in the end (delta: -10.7GB). 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. [2022-11-16 12:15:50,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8 --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-e04fb08 [2022-11-16 12:15:52,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:15:52,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:15:52,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:15:52,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:15:52,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:15:52,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:15:52,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:15:52,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:15:52,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:15:52,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:15:52,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:15:52,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:15:52,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:15:52,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:15:52,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:15:52,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:15:52,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:15:52,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:15:52,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:15:52,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:15:52,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:15:52,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:15:52,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:15:52,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:15:52,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:15:52,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:15:52,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:15:52,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:15:52,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:15:52,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:15:52,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:15:52,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:15:52,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:15:52,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:15:52,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:15:52,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:15:52,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:15:52,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:15:52,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:15:52,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:15:52,910 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Bitvector.epf [2022-11-16 12:15:52,933 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:15:52,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:15:52,934 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:15:52,934 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:15:52,935 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:15:52,936 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:15:52,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:15:52,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:15:52,937 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:15:52,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:15:52,937 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:15:52,938 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:15:52,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:15:52,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:15:52,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:15:52,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:15:52,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:15:52,939 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 12:15:52,940 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 12:15:52,940 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 12:15:52,940 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:15:52,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:15:52,941 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:15:52,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:15:52,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:15:52,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:15:52,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:15:52,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:15:52,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:15:52,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:15:52,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:15:52,943 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 12:15:52,943 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 12:15:52,944 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:15:52,944 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:15:52,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:15:52,944 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 12:15:52,944 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a956b76a4ba98ce13df4d83ef2fb7ffa0973225ecb152c14bcfbb55b6546601 [2022-11-16 12:15:53,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:15:53,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:15:53,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:15:53,328 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:15:53,329 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:15:53,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2022-11-16 12:15:53,403 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/data/2c2d90efa/c21db39ecbf441cbaa32ed7f30e7eb22/FLAG04745d18a [2022-11-16 12:15:54,064 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:15:54,065 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2022-11-16 12:15:54,082 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/data/2c2d90efa/c21db39ecbf441cbaa32ed7f30e7eb22/FLAG04745d18a [2022-11-16 12:15:54,334 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/data/2c2d90efa/c21db39ecbf441cbaa32ed7f30e7eb22 [2022-11-16 12:15:54,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:15:54,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:15:54,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:15:54,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:15:54,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:15:54,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:15:54" (1/1) ... [2022-11-16 12:15:54,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb5bae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:54, skipping insertion in model container [2022-11-16 12:15:54,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:15:54" (1/1) ... [2022-11-16 12:15:54,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:15:54,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:15:54,557 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 12:15:54,849 WARN L229 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39095,39108] [2022-11-16 12:15:54,851 WARN L229 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39180,39193] [2022-11-16 12:15:54,851 WARN L229 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39232,39245] [2022-11-16 12:15:54,856 WARN L229 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39641,39654] [2022-11-16 12:15:54,857 WARN L229 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39726,39739] [2022-11-16 12:15:54,857 WARN L229 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39778,39791] [2022-11-16 12:15:54,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:15:54,872 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:15:54,885 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 12:15:54,927 WARN L229 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39095,39108] [2022-11-16 12:15:54,931 WARN L229 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39180,39193] [2022-11-16 12:15:54,933 WARN L229 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39232,39245] [2022-11-16 12:15:54,938 WARN L229 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39641,39654] [2022-11-16 12:15:54,940 WARN L229 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39726,39739] [2022-11-16 12:15:54,945 WARN L229 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_4d8dc227-c488-4f59-a3bf-d4806b89c08f/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39778,39791] [2022-11-16 12:15:54,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:15:55,025 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:15:55,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:55 WrapperNode [2022-11-16 12:15:55,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:15:55,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:15:55,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:15:55,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:15:55,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:55" (1/1) ... [2022-11-16 12:15:55,071 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:55" (1/1) ... [2022-11-16 12:15:55,112 INFO L138 Inliner]: procedures = 228, calls = 43, calls flagged for inlining = 10, calls inlined = 7, statements flattened = 198 [2022-11-16 12:15:55,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:15:55,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:15:55,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:15:55,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:15:55,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:55" (1/1) ... [2022-11-16 12:15:55,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:55" (1/1) ... [2022-11-16 12:15:55,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:55" (1/1) ... [2022-11-16 12:15:55,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:55" (1/1) ... [2022-11-16 12:15:55,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:55" (1/1) ... [2022-11-16 12:15:55,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:55" (1/1) ... [2022-11-16 12:15:55,187 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:55" (1/1) ... [2022-11-16 12:15:55,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:55" (1/1) ... [2022-11-16 12:15:55,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:15:55,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:15:55,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:15:55,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:15:55,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:55" (1/1) ... [2022-11-16 12:15:55,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:15:55,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:55,252 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:15:55,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:15:55,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 12:15:55,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:15:55,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:15:55,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 12:15:55,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 12:15:55,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:15:55,303 INFO L130 BoogieDeclarations]: Found specification of procedure reader_nowait_fn [2022-11-16 12:15:55,303 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_nowait_fn [2022-11-16 12:15:55,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:15:55,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:15:55,305 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:15:55,495 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:15:55,497 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:15:56,364 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:15:56,378 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:15:56,378 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 12:15:56,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:15:56 BoogieIcfgContainer [2022-11-16 12:15:56,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:15:56,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:15:56,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:15:56,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:15:56,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:15:54" (1/3) ... [2022-11-16 12:15:56,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7212f726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:15:56, skipping insertion in model container [2022-11-16 12:15:56,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:55" (2/3) ... [2022-11-16 12:15:56,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7212f726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:15:56, skipping insertion in model container [2022-11-16 12:15:56,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:15:56" (3/3) ... [2022-11-16 12:15:56,390 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_1w1r-1.i [2022-11-16 12:15:56,399 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:15:56,409 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:15:56,409 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-11-16 12:15:56,409 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:15:56,543 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 12:15:56,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 238 transitions, 484 flow [2022-11-16 12:15:56,679 INFO L130 PetriNetUnfolder]: 9/237 cut-off events. [2022-11-16 12:15:56,679 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:15:56,690 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 514 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. [2022-11-16 12:15:56,691 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 238 transitions, 484 flow [2022-11-16 12:15:56,705 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 228 transitions, 459 flow [2022-11-16 12:15:56,729 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:15:56,737 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;@5fd0b84b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:15:56,738 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-16 12:15:56,760 INFO L130 PetriNetUnfolder]: 0/32 cut-off events. [2022-11-16 12:15:56,761 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:15:56,761 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:15:56,762 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:56,762 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)] === [2022-11-16 12:15:56,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:56,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1231723625, now seen corresponding path program 1 times [2022-11-16 12:15:56,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:15:56,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997851567] [2022-11-16 12:15:56,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:56,783 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:15:56,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:15:56,789 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:15:56,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 12:15:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:56,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:15:56,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:57,027 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:15:57,070 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:15:57,114 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:57,114 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:15:57,172 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:57,173 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:15:57,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:57,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:15:57,234 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:15:57,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997851567] [2022-11-16 12:15:57,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997851567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:57,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:57,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:15:57,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264079260] [2022-11-16 12:15:57,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:57,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:15:57,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:15:57,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:15:57,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:15:57,291 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 238 [2022-11-16 12:15:57,295 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) [2022-11-16 12:15:57,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:15:57,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 238 [2022-11-16 12:15:57,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:15:58,949 INFO L130 PetriNetUnfolder]: 1707/5491 cut-off events. [2022-11-16 12:15:58,949 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:15:58,959 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 111. Compared 44506 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. [2022-11-16 12:15:58,979 INFO L137 encePairwiseOnDemand]: 226/238 looper letters, 91 selfloop transitions, 5 changer transitions 0/221 dead transitions. [2022-11-16 12:15:58,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 221 transitions, 637 flow [2022-11-16 12:15:58,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:15:58,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:15:58,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 907 transitions. [2022-11-16 12:15:58,997 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6351540616246498 [2022-11-16 12:15:58,998 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 907 transitions. [2022-11-16 12:15:58,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 907 transitions. [2022-11-16 12:15:59,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:15:59,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 907 transitions. [2022-11-16 12:15:59,008 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) [2022-11-16 12:15:59,016 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) [2022-11-16 12:15:59,017 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) [2022-11-16 12:15:59,019 INFO L175 Difference]: Start difference. First operand has 223 places, 228 transitions, 459 flow. Second operand 6 states and 907 transitions. [2022-11-16 12:15:59,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 221 transitions, 637 flow [2022-11-16 12:15:59,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 221 transitions, 636 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:15:59,029 INFO L231 Difference]: Finished difference. Result has 226 places, 221 transitions, 454 flow [2022-11-16 12:15:59,031 INFO L271 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} [2022-11-16 12:15:59,035 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 3 predicate places. [2022-11-16 12:15:59,035 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 221 transitions, 454 flow [2022-11-16 12:15:59,036 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) [2022-11-16 12:15:59,036 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:15:59,036 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:59,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-16 12:15:59,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:15:59,250 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)] === [2022-11-16 12:15:59,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:59,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1636836643, now seen corresponding path program 1 times [2022-11-16 12:15:59,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:15:59,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058255677] [2022-11-16 12:15:59,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:59,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:15:59,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:15:59,253 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:15:59,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 12:15:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:59,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:15:59,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:59,366 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:15:59,400 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:15:59,445 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:59,446 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:15:59,512 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:59,513 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:15:59,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:59,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:15:59,571 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:15:59,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058255677] [2022-11-16 12:15:59,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058255677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:59,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:59,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:15:59,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121164925] [2022-11-16 12:15:59,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:59,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:15:59,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:15:59,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:15:59,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:15:59,584 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 238 [2022-11-16 12:15:59,586 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) [2022-11-16 12:15:59,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:15:59,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 238 [2022-11-16 12:15:59,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:00,970 INFO L130 PetriNetUnfolder]: 1707/5490 cut-off events. [2022-11-16 12:16:00,971 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:16:00,980 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 111. Compared 44501 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. [2022-11-16 12:16:01,002 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 90 selfloop transitions, 5 changer transitions 0/220 dead transitions. [2022-11-16 12:16:01,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 220 transitions, 642 flow [2022-11-16 12:16:01,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:16:01,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:16:01,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 900 transitions. [2022-11-16 12:16:01,007 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6302521008403361 [2022-11-16 12:16:01,007 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 900 transitions. [2022-11-16 12:16:01,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 900 transitions. [2022-11-16 12:16:01,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:01,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 900 transitions. [2022-11-16 12:16:01,011 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) [2022-11-16 12:16:01,014 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) [2022-11-16 12:16:01,016 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) [2022-11-16 12:16:01,016 INFO L175 Difference]: Start difference. First operand has 226 places, 221 transitions, 454 flow. Second operand 6 states and 900 transitions. [2022-11-16 12:16:01,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 220 transitions, 642 flow [2022-11-16 12:16:01,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 220 transitions, 632 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:16:01,023 INFO L231 Difference]: Finished difference. Result has 225 places, 220 transitions, 452 flow [2022-11-16 12:16:01,024 INFO L271 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} [2022-11-16 12:16:01,025 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 2 predicate places. [2022-11-16 12:16:01,025 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 220 transitions, 452 flow [2022-11-16 12:16:01,026 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) [2022-11-16 12:16:01,026 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:01,026 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:01,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:01,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:01,246 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)] === [2022-11-16 12:16:01,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:01,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1569833666, now seen corresponding path program 1 times [2022-11-16 12:16:01,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:01,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566197861] [2022-11-16 12:16:01,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:01,248 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:01,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:01,250 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:01,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 12:16:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:01,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:16:01,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:01,413 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:01,433 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:01,466 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:16:01,467 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:01,518 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:16:01,519 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:01,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:01,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:01,570 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:01,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566197861] [2022-11-16 12:16:01,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566197861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:01,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:01,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:16:01,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739221160] [2022-11-16 12:16:01,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:01,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:16:01,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:01,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:16:01,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:16:01,574 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 238 [2022-11-16 12:16:01,576 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) [2022-11-16 12:16:01,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:01,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 238 [2022-11-16 12:16:01,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:04,333 INFO L130 PetriNetUnfolder]: 2913/8099 cut-off events. [2022-11-16 12:16:04,334 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:16:04,346 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 64715 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. [2022-11-16 12:16:04,375 INFO L137 encePairwiseOnDemand]: 217/238 looper letters, 242 selfloop transitions, 43 changer transitions 0/410 dead transitions. [2022-11-16 12:16:04,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 410 transitions, 1402 flow [2022-11-16 12:16:04,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:16:04,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:16:04,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1091 transitions. [2022-11-16 12:16:04,379 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7640056022408963 [2022-11-16 12:16:04,379 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1091 transitions. [2022-11-16 12:16:04,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1091 transitions. [2022-11-16 12:16:04,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:04,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1091 transitions. [2022-11-16 12:16:04,383 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) [2022-11-16 12:16:04,386 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) [2022-11-16 12:16:04,388 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) [2022-11-16 12:16:04,388 INFO L175 Difference]: Start difference. First operand has 225 places, 220 transitions, 452 flow. Second operand 6 states and 1091 transitions. [2022-11-16 12:16:04,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 410 transitions, 1402 flow [2022-11-16 12:16:04,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 410 transitions, 1392 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:16:04,397 INFO L231 Difference]: Finished difference. Result has 230 places, 262 transitions, 738 flow [2022-11-16 12:16:04,397 INFO L271 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} [2022-11-16 12:16:04,398 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 7 predicate places. [2022-11-16 12:16:04,398 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 262 transitions, 738 flow [2022-11-16 12:16:04,399 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) [2022-11-16 12:16:04,399 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:04,400 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:04,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-16 12:16:04,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:04,613 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)] === [2022-11-16 12:16:04,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:04,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1569421209, now seen corresponding path program 1 times [2022-11-16 12:16:04,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:04,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724069583] [2022-11-16 12:16:04,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:04,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:04,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:04,616 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:04,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 12:16:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:04,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:16:04,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:04,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:04,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:04,753 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:04,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724069583] [2022-11-16 12:16:04,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724069583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:04,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:04,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:16:04,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776957588] [2022-11-16 12:16:04,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:04,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:16:04,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:04,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:16:04,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:16:04,759 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 238 [2022-11-16 12:16:04,761 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) [2022-11-16 12:16:04,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:04,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 238 [2022-11-16 12:16:04,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:05,244 INFO L130 PetriNetUnfolder]: 309/2475 cut-off events. [2022-11-16 12:16:05,244 INFO L131 PetriNetUnfolder]: For 220/232 co-relation queries the response was YES. [2022-11-16 12:16:05,255 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 17604 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. [2022-11-16 12:16:05,264 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 7 selfloop transitions, 2 changer transitions 0/265 dead transitions. [2022-11-16 12:16:05,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 265 transitions, 762 flow [2022-11-16 12:16:05,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:16:05,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:16:05,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 685 transitions. [2022-11-16 12:16:05,268 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9593837535014006 [2022-11-16 12:16:05,268 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 685 transitions. [2022-11-16 12:16:05,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 685 transitions. [2022-11-16 12:16:05,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:05,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 685 transitions. [2022-11-16 12:16:05,271 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) [2022-11-16 12:16:05,273 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) [2022-11-16 12:16:05,274 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) [2022-11-16 12:16:05,274 INFO L175 Difference]: Start difference. First operand has 230 places, 262 transitions, 738 flow. Second operand 3 states and 685 transitions. [2022-11-16 12:16:05,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 265 transitions, 762 flow [2022-11-16 12:16:05,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 265 transitions, 762 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:16:05,286 INFO L231 Difference]: Finished difference. Result has 233 places, 263 transitions, 750 flow [2022-11-16 12:16:05,286 INFO L271 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} [2022-11-16 12:16:05,287 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 10 predicate places. [2022-11-16 12:16:05,287 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 263 transitions, 750 flow [2022-11-16 12:16:05,288 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) [2022-11-16 12:16:05,288 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:05,288 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:05,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:05,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:05,501 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)] === [2022-11-16 12:16:05,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:05,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1272499682, now seen corresponding path program 1 times [2022-11-16 12:16:05,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:05,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025728140] [2022-11-16 12:16:05,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:05,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:05,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:05,504 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:05,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 12:16:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:05,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:16:05,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:05,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:05,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:05,682 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:05,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025728140] [2022-11-16 12:16:05,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025728140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:05,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:05,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:16:05,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61529578] [2022-11-16 12:16:05,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:05,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:16:05,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:05,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:16:05,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:16:05,686 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 238 [2022-11-16 12:16:05,693 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) [2022-11-16 12:16:05,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:05,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 238 [2022-11-16 12:16:05,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:06,523 INFO L130 PetriNetUnfolder]: 555/3861 cut-off events. [2022-11-16 12:16:06,524 INFO L131 PetriNetUnfolder]: For 450/513 co-relation queries the response was YES. [2022-11-16 12:16:06,539 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 30694 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. [2022-11-16 12:16:06,556 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 10 selfloop transitions, 2 changer transitions 0/267 dead transitions. [2022-11-16 12:16:06,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 267 transitions, 782 flow [2022-11-16 12:16:06,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:16:06,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:16:06,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2022-11-16 12:16:06,558 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9551820728291317 [2022-11-16 12:16:06,558 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2022-11-16 12:16:06,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2022-11-16 12:16:06,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:06,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2022-11-16 12:16:06,561 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) [2022-11-16 12:16:06,562 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) [2022-11-16 12:16:06,563 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) [2022-11-16 12:16:06,563 INFO L175 Difference]: Start difference. First operand has 233 places, 263 transitions, 750 flow. Second operand 3 states and 682 transitions. [2022-11-16 12:16:06,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 267 transitions, 782 flow [2022-11-16 12:16:06,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 267 transitions, 780 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:16:06,575 INFO L231 Difference]: Finished difference. Result has 235 places, 264 transitions, 760 flow [2022-11-16 12:16:06,575 INFO L271 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} [2022-11-16 12:16:06,578 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 12 predicate places. [2022-11-16 12:16:06,578 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 264 transitions, 760 flow [2022-11-16 12:16:06,579 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) [2022-11-16 12:16:06,579 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:06,579 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:06,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:06,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:06,792 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)] === [2022-11-16 12:16:06,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:06,794 INFO L85 PathProgramCache]: Analyzing trace with hash 982328460, now seen corresponding path program 1 times [2022-11-16 12:16:06,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:06,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142126615] [2022-11-16 12:16:06,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:06,795 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:06,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:06,798 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:06,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 12:16:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:06,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:16:06,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:06,954 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:06,975 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:07,013 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:16:07,016 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:07,068 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:16:07,071 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:07,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:07,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:07,129 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:07,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142126615] [2022-11-16 12:16:07,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142126615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:07,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:07,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:16:07,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110069181] [2022-11-16 12:16:07,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:07,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:16:07,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:07,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:16:07,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:16:07,132 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 238 [2022-11-16 12:16:07,132 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) [2022-11-16 12:16:07,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:07,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 238 [2022-11-16 12:16:07,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:13,208 INFO L130 PetriNetUnfolder]: 11063/29110 cut-off events. [2022-11-16 12:16:13,208 INFO L131 PetriNetUnfolder]: For 9000/9175 co-relation queries the response was YES. [2022-11-16 12:16:13,289 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 267. Compared 270962 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. [2022-11-16 12:16:13,383 INFO L137 encePairwiseOnDemand]: 214/238 looper letters, 319 selfloop transitions, 45 changer transitions 0/489 dead transitions. [2022-11-16 12:16:13,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 489 transitions, 2246 flow [2022-11-16 12:16:13,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:16:13,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:16:13,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1069 transitions. [2022-11-16 12:16:13,387 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7485994397759104 [2022-11-16 12:16:13,387 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1069 transitions. [2022-11-16 12:16:13,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1069 transitions. [2022-11-16 12:16:13,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:13,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1069 transitions. [2022-11-16 12:16:13,391 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) [2022-11-16 12:16:13,393 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) [2022-11-16 12:16:13,394 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) [2022-11-16 12:16:13,394 INFO L175 Difference]: Start difference. First operand has 235 places, 264 transitions, 760 flow. Second operand 6 states and 1069 transitions. [2022-11-16 12:16:13,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 489 transitions, 2246 flow [2022-11-16 12:16:13,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 489 transitions, 2244 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:16:13,433 INFO L231 Difference]: Finished difference. Result has 244 places, 308 transitions, 1150 flow [2022-11-16 12:16:13,434 INFO L271 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} [2022-11-16 12:16:13,437 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 21 predicate places. [2022-11-16 12:16:13,437 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 308 transitions, 1150 flow [2022-11-16 12:16:13,437 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) [2022-11-16 12:16:13,438 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:13,438 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:13,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-11-16 12:16:13,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:13,652 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)] === [2022-11-16 12:16:13,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:13,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1009204055, now seen corresponding path program 1 times [2022-11-16 12:16:13,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:13,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803014196] [2022-11-16 12:16:13,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:13,653 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:13,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:13,654 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:13,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 12:16:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:13,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:16:13,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:13,825 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:13,848 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:13,897 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:16:13,897 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:13,960 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:16:13,961 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:14,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:14,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:14,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803014196] [2022-11-16 12:16:14,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803014196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:14,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:14,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:16:14,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993777562] [2022-11-16 12:16:14,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:14,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:16:14,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:14,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:16:14,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:16:14,035 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 238 [2022-11-16 12:16:14,036 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) [2022-11-16 12:16:14,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:14,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 238 [2022-11-16 12:16:14,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:21,148 INFO L130 PetriNetUnfolder]: 11656/31592 cut-off events. [2022-11-16 12:16:21,148 INFO L131 PetriNetUnfolder]: For 18640/18758 co-relation queries the response was YES. [2022-11-16 12:16:21,230 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 299772 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. [2022-11-16 12:16:21,348 INFO L137 encePairwiseOnDemand]: 223/238 looper letters, 373 selfloop transitions, 78 changer transitions 0/577 dead transitions. [2022-11-16 12:16:21,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 577 transitions, 3270 flow [2022-11-16 12:16:21,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:16:21,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:16:21,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1068 transitions. [2022-11-16 12:16:21,360 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7478991596638656 [2022-11-16 12:16:21,361 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1068 transitions. [2022-11-16 12:16:21,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1068 transitions. [2022-11-16 12:16:21,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:21,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1068 transitions. [2022-11-16 12:16:21,369 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) [2022-11-16 12:16:21,374 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) [2022-11-16 12:16:21,375 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) [2022-11-16 12:16:21,375 INFO L175 Difference]: Start difference. First operand has 244 places, 308 transitions, 1150 flow. Second operand 6 states and 1068 transitions. [2022-11-16 12:16:21,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 577 transitions, 3270 flow [2022-11-16 12:16:21,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 577 transitions, 3270 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:16:21,448 INFO L231 Difference]: Finished difference. Result has 254 places, 385 transitions, 1968 flow [2022-11-16 12:16:21,449 INFO L271 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} [2022-11-16 12:16:21,450 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 31 predicate places. [2022-11-16 12:16:21,450 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 385 transitions, 1968 flow [2022-11-16 12:16:21,451 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) [2022-11-16 12:16:21,451 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:21,451 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:21,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:21,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:21,665 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)] === [2022-11-16 12:16:21,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:21,665 INFO L85 PathProgramCache]: Analyzing trace with hash 157236464, now seen corresponding path program 1 times [2022-11-16 12:16:21,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:21,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663299451] [2022-11-16 12:16:21,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:21,666 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:21,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:21,668 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:21,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 12:16:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:21,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:16:21,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:21,833 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:21,851 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:21,891 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:16:21,891 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:21,942 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:16:21,942 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:21,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:21,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:21,992 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:21,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663299451] [2022-11-16 12:16:21,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663299451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:21,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:21,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:16:21,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115814977] [2022-11-16 12:16:21,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:21,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:16:21,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:21,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:16:21,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:16:21,995 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 238 [2022-11-16 12:16:21,998 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) [2022-11-16 12:16:21,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:21,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 238 [2022-11-16 12:16:21,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:29,734 INFO L130 PetriNetUnfolder]: 13545/35609 cut-off events. [2022-11-16 12:16:29,734 INFO L131 PetriNetUnfolder]: For 29227/29404 co-relation queries the response was YES. [2022-11-16 12:16:29,855 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 342132 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. [2022-11-16 12:16:29,960 INFO L137 encePairwiseOnDemand]: 227/238 looper letters, 458 selfloop transitions, 66 changer transitions 0/650 dead transitions. [2022-11-16 12:16:29,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 650 transitions, 4264 flow [2022-11-16 12:16:29,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:16:29,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:16:29,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1057 transitions. [2022-11-16 12:16:29,964 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7401960784313726 [2022-11-16 12:16:29,964 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1057 transitions. [2022-11-16 12:16:29,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1057 transitions. [2022-11-16 12:16:29,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:29,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1057 transitions. [2022-11-16 12:16:29,966 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) [2022-11-16 12:16:29,970 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) [2022-11-16 12:16:29,971 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) [2022-11-16 12:16:29,971 INFO L175 Difference]: Start difference. First operand has 254 places, 385 transitions, 1968 flow. Second operand 6 states and 1057 transitions. [2022-11-16 12:16:29,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 650 transitions, 4264 flow [2022-11-16 12:16:30,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 650 transitions, 4264 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:16:30,092 INFO L231 Difference]: Finished difference. Result has 264 places, 447 transitions, 2730 flow [2022-11-16 12:16:30,093 INFO L271 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} [2022-11-16 12:16:30,094 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 41 predicate places. [2022-11-16 12:16:30,094 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 447 transitions, 2730 flow [2022-11-16 12:16:30,094 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) [2022-11-16 12:16:30,095 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:30,095 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:30,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:30,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:30,301 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)] === [2022-11-16 12:16:30,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:30,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1611811336, now seen corresponding path program 1 times [2022-11-16 12:16:30,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:30,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362829512] [2022-11-16 12:16:30,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:30,303 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:30,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:30,304 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:30,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-16 12:16:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:30,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:16:30,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:30,494 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:30,511 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:30,542 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:16:30,542 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:30,588 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:16:30,589 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:30,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:30,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:30,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:30,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362829512] [2022-11-16 12:16:30,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362829512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:30,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:30,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:16:30,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537172457] [2022-11-16 12:16:30,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:30,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:16:30,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:30,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:16:30,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:16:30,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 238 [2022-11-16 12:16:30,643 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) [2022-11-16 12:16:30,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:30,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 238 [2022-11-16 12:16:30,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:40,287 INFO L130 PetriNetUnfolder]: 15015/40762 cut-off events. [2022-11-16 12:16:40,287 INFO L131 PetriNetUnfolder]: For 42030/42330 co-relation queries the response was YES. [2022-11-16 12:16:40,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110654 conditions, 40762 events. 15015/40762 cut-off events. For 42030/42330 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 403483 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. [2022-11-16 12:16:40,599 INFO L137 encePairwiseOnDemand]: 203/238 looper letters, 356 selfloop transitions, 172 changer transitions 0/654 dead transitions. [2022-11-16 12:16:40,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 654 transitions, 4778 flow [2022-11-16 12:16:40,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:16:40,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:16:40,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1063 transitions. [2022-11-16 12:16:40,602 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7443977591036415 [2022-11-16 12:16:40,602 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1063 transitions. [2022-11-16 12:16:40,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1063 transitions. [2022-11-16 12:16:40,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:40,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1063 transitions. [2022-11-16 12:16:40,606 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) [2022-11-16 12:16:40,609 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) [2022-11-16 12:16:40,610 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) [2022-11-16 12:16:40,610 INFO L175 Difference]: Start difference. First operand has 264 places, 447 transitions, 2730 flow. Second operand 6 states and 1063 transitions. [2022-11-16 12:16:40,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 654 transitions, 4778 flow [2022-11-16 12:16:40,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 654 transitions, 4778 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:16:40,776 INFO L231 Difference]: Finished difference. Result has 274 places, 594 transitions, 4302 flow [2022-11-16 12:16:40,777 INFO L271 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} [2022-11-16 12:16:40,777 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 51 predicate places. [2022-11-16 12:16:40,778 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 594 transitions, 4302 flow [2022-11-16 12:16:40,778 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) [2022-11-16 12:16:40,778 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:40,779 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:40,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-16 12:16:40,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:40,992 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)] === [2022-11-16 12:16:40,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:40,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1896658099, now seen corresponding path program 1 times [2022-11-16 12:16:40,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:40,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481162028] [2022-11-16 12:16:40,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:40,993 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:40,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:40,995 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:41,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-16 12:16:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:41,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:16:41,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:41,202 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:41,222 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:41,271 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:16:41,272 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:41,340 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:16:41,340 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:41,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:41,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:41,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:41,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481162028] [2022-11-16 12:16:41,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481162028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:41,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:41,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:16:41,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593081909] [2022-11-16 12:16:41,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:41,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:16:41,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:41,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:16:41,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:16:41,415 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 238 [2022-11-16 12:16:41,416 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) [2022-11-16 12:16:41,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:41,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 238 [2022-11-16 12:16:41,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:52,826 INFO L130 PetriNetUnfolder]: 16462/43085 cut-off events. [2022-11-16 12:16:52,826 INFO L131 PetriNetUnfolder]: For 65333/65458 co-relation queries the response was YES. [2022-11-16 12:16:53,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133813 conditions, 43085 events. 16462/43085 cut-off events. For 65333/65458 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 424020 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. [2022-11-16 12:16:53,170 INFO L137 encePairwiseOnDemand]: 207/238 looper letters, 482 selfloop transitions, 167 changer transitions 0/773 dead transitions. [2022-11-16 12:16:53,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 773 transitions, 6474 flow [2022-11-16 12:16:53,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:16:53,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:16:53,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1024 transitions. [2022-11-16 12:16:53,176 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7170868347338936 [2022-11-16 12:16:53,176 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1024 transitions. [2022-11-16 12:16:53,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1024 transitions. [2022-11-16 12:16:53,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:53,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1024 transitions. [2022-11-16 12:16:53,180 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) [2022-11-16 12:16:53,184 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) [2022-11-16 12:16:53,185 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) [2022-11-16 12:16:53,185 INFO L175 Difference]: Start difference. First operand has 274 places, 594 transitions, 4302 flow. Second operand 6 states and 1024 transitions. [2022-11-16 12:16:53,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 773 transitions, 6474 flow [2022-11-16 12:16:53,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 773 transitions, 6242 flow, removed 116 selfloop flow, removed 0 redundant places. [2022-11-16 12:16:53,432 INFO L231 Difference]: Finished difference. Result has 284 places, 721 transitions, 5510 flow [2022-11-16 12:16:53,433 INFO L271 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} [2022-11-16 12:16:53,434 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 61 predicate places. [2022-11-16 12:16:53,434 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 721 transitions, 5510 flow [2022-11-16 12:16:53,435 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) [2022-11-16 12:16:53,435 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:53,435 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:53,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:53,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:53,639 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)] === [2022-11-16 12:16:53,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:53,639 INFO L85 PathProgramCache]: Analyzing trace with hash 31682943, now seen corresponding path program 1 times [2022-11-16 12:16:53,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:53,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664235364] [2022-11-16 12:16:53,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:53,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:53,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:53,647 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:53,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8dc227-c488-4f59-a3bf-d4806b89c08f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 12:16:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:53,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-16 12:16:53,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:53,862 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:53,899 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:16:53,899 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:54,094 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:54,246 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:54,913 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:55,090 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:55,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:55,228 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:55,259 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:55,388 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:55,520 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:55,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:55,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:55,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:55,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:55,703 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:55,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:55,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:55,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:55,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:55,765 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:56,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:56,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:56,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:56,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:56,011 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:56,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:56,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:56,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:56,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:56,252 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:56,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:56,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:56,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:56,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:56,290 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:56,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:56,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:56,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:56,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:56,340 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:56,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:56,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:56,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:56,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:56,376 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:56,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:56,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:56,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:56,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:56,494 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:16:56,494 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 12:16:56,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:56,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:56,587 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:56,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664235364] [2022-11-16 12:16:56,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664235364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:56,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:56,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-16 12:16:56,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831342105] [2022-11-16 12:16:56,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:56,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 12:16:56,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:56,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 12:16:56,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:16:56,591 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 238 [2022-11-16 12:16:56,594 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) [2022-11-16 12:16:56,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:56,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 238 [2022-11-16 12:16:56,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand