./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 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_55ba20ed-9181-431a-bc59-695d88c83513/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/bin/utaipan-gh47qXpMRh/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 509c3c8c1895397e4c0d03f6462ad0ca0ed3ce99b40d08b775ab8473dba5ee1f --- 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-2329fc7 [2022-12-14 14:04:07,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:04:07,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:04:07,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:04:07,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:04:07,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:04:07,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:04:07,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:04:07,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:04:07,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:04:07,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:04:07,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:04:07,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:04:07,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:04:07,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:04:07,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:04:07,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:04:07,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:04:07,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:04:07,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:04:07,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:04:07,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:04:07,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:04:07,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:04:07,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:04:07,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:04:07,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:04:07,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:04:07,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:04:07,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:04:07,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:04:07,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:04:07,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:04:07,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:04:07,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:04:07,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:04:07,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:04:07,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:04:07,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:04:07,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:04:07,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:04:07,978 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/bin/utaipan-gh47qXpMRh/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-12-14 14:04:07,994 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:04:07,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:04:07,994 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:04:07,994 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:04:07,995 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:04:07,995 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:04:07,995 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:04:07,995 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:04:07,995 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:04:07,995 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:04:07,995 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:04:07,996 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:04:07,996 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:04:07,996 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:04:07,996 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:04:07,996 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:04:07,996 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:04:07,996 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:04:07,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:04:07,997 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:04:07,997 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:04:07,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:04:07,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:04:07,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:04:07,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:04:07,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:04:07,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:04:07,998 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-14 14:04:07,998 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:04:07,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:04:07,998 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:04:07,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:04:07,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:04:07,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:04:07,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:04:07,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:04:07,999 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:04:07,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:04:07,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:04:07,999 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:04:07,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:04:08,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:04:08,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:04:08,000 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_55ba20ed-9181-431a-bc59-695d88c83513/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 509c3c8c1895397e4c0d03f6462ad0ca0ed3ce99b40d08b775ab8473dba5ee1f [2022-12-14 14:04:08,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:04:08,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:04:08,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:04:08,190 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:04:08,191 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:04:08,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i [2022-12-14 14:04:10,745 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:04:10,945 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:04:10,945 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i [2022-12-14 14:04:10,956 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/bin/utaipan-gh47qXpMRh/data/7dda205c3/6af0e120485d400e81003bda045fd9fd/FLAG5353ba62e [2022-12-14 14:04:11,315 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/bin/utaipan-gh47qXpMRh/data/7dda205c3/6af0e120485d400e81003bda045fd9fd [2022-12-14 14:04:11,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:04:11,318 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:04:11,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:04:11,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:04:11,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:04:11,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:04:11" (1/1) ... [2022-12-14 14:04:11,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7355f8cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:11, skipping insertion in model container [2022-12-14 14:04:11,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:04:11" (1/1) ... [2022-12-14 14:04:11,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:04:11,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:04:11,454 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 14:04:11,678 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39095,39108] [2022-12-14 14:04:11,680 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39180,39193] [2022-12-14 14:04:11,680 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39232,39245] [2022-12-14 14:04:11,742 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49388,49401] [2022-12-14 14:04:11,743 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49437,49450] [2022-12-14 14:04:11,744 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49565,49578] [2022-12-14 14:04:11,745 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49623,49636] [2022-12-14 14:04:11,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:04:11,758 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:04:11,767 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 14:04:11,788 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39095,39108] [2022-12-14 14:04:11,789 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39180,39193] [2022-12-14 14:04:11,790 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39232,39245] [2022-12-14 14:04:11,797 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49388,49401] [2022-12-14 14:04:11,798 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49437,49450] [2022-12-14 14:04:11,799 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49565,49578] [2022-12-14 14:04:11,800 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49623,49636] [2022-12-14 14:04:11,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:04:11,843 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:04:11,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:11 WrapperNode [2022-12-14 14:04:11,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:04:11,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:04:11,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:04:11,844 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:04:11,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:11" (1/1) ... [2022-12-14 14:04:11,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:11" (1/1) ... [2022-12-14 14:04:11,902 INFO L138 Inliner]: procedures = 310, calls = 70, calls flagged for inlining = 10, calls inlined = 8, statements flattened = 349 [2022-12-14 14:04:11,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:04:11,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:04:11,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:04:11,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:04:11,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:11" (1/1) ... [2022-12-14 14:04:11,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:11" (1/1) ... [2022-12-14 14:04:11,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:11" (1/1) ... [2022-12-14 14:04:11,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:11" (1/1) ... [2022-12-14 14:04:11,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:11" (1/1) ... [2022-12-14 14:04:11,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:11" (1/1) ... [2022-12-14 14:04:11,940 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:11" (1/1) ... [2022-12-14 14:04:11,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:11" (1/1) ... [2022-12-14 14:04:11,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:04:11,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:04:11,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:04:11,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:04:11,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:11" (1/1) ... [2022-12-14 14:04:11,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:04:11,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:04:11,971 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:04:11,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ba20ed-9181-431a-bc59-695d88c83513/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:04:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2022-12-14 14:04:12,021 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2022-12-14 14:04:12,022 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2022-12-14 14:04:12,022 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2022-12-14 14:04:12,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 14:04:12,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:04:12,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 14:04:12,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 14:04:12,022 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-14 14:04:12,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:04:12,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:04:12,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:04:12,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:04:12,024 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 14:04:12,133 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:04:12,135 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:04:12,612 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:04:12,621 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:04:12,621 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-14 14:04:12,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:04:12 BoogieIcfgContainer [2022-12-14 14:04:12,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:04:12,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:04:12,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:04:12,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:04:12,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:04:11" (1/3) ... [2022-12-14 14:04:12,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273cf3dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:04:12, skipping insertion in model container [2022-12-14 14:04:12,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:11" (2/3) ... [2022-12-14 14:04:12,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273cf3dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:04:12, skipping insertion in model container [2022-12-14 14:04:12,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:04:12" (3/3) ... [2022-12-14 14:04:12,629 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-1.i [2022-12-14 14:04:12,635 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 14:04:12,643 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:04:12,643 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-12-14 14:04:12,643 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 14:04:12,744 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 14:04:12,769 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 14:04:12,780 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 391 places, 401 transitions, 818 flow [2022-12-14 14:04:12,782 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 391 places, 401 transitions, 818 flow [2022-12-14 14:04:12,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 391 places, 401 transitions, 818 flow [2022-12-14 14:04:12,888 INFO L130 PetriNetUnfolder]: 17/399 cut-off events. [2022-12-14 14:04:12,888 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-14 14:04:12,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 399 events. 17/399 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 915 event pairs, 0 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 327. Up to 2 conditions per place. [2022-12-14 14:04:12,915 INFO L119 LiptonReduction]: Number of co-enabled transitions 66944 [2022-12-14 14:04:27,265 INFO L134 LiptonReduction]: Checked pairs total: 1826949 [2022-12-14 14:04:27,266 INFO L136 LiptonReduction]: Total number of compositions: 281 [2022-12-14 14:04:27,273 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 200 places, 205 transitions, 426 flow [2022-12-14 14:04:30,085 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 191891 states, 191267 states have (on average 3.151636194429776) internal successors, (602804), 191890 states have internal predecessors, (602804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:04:30,104 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:04:30,108 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=FINITE_AUTOMATA, 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;@7641d9bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:04:30,108 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2022-12-14 14:04:30,294 INFO L276 IsEmpty]: Start isEmpty. Operand has 191891 states, 191267 states have (on average 3.151636194429776) internal successors, (602804), 191890 states have internal predecessors, (602804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:04:30,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-12-14 14:04:30,298 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:04:30,299 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-12-14 14:04:30,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2022-12-14 14:04:30,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:04:30,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1377, now seen corresponding path program 1 times [2022-12-14 14:04:30,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:04:30,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419546477] [2022-12-14 14:04:30,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:04:30,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:04:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:04:30,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:04:30,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:04:30,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419546477] [2022-12-14 14:04:30,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419546477] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:04:30,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:04:30,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-14 14:04:30,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723149754] [2022-12-14 14:04:30,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:04:30,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 14:04:30,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:04:30,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 14:04:30,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 14:04:30,798 INFO L87 Difference]: Start difference. First operand has 191891 states, 191267 states have (on average 3.151636194429776) internal successors, (602804), 191890 states have internal predecessors, (602804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:04:32,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:04:32,353 INFO L93 Difference]: Finished difference Result 191889 states and 587772 transitions. [2022-12-14 14:04:32,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 14:04:32,356 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-12-14 14:04:32,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:04:33,213 INFO L225 Difference]: With dead ends: 191889 [2022-12-14 14:04:33,213 INFO L226 Difference]: Without dead ends: 191889 [2022-12-14 14:04:33,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 14:04:33,216 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:04:33,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 147 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:04:33,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191889 states. [2022-12-14 14:04:37,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191889 to 191889. [2022-12-14 14:04:37,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191889 states, 191267 states have (on average 3.073044487548819) internal successors, (587772), 191888 states have internal predecessors, (587772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:04:38,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191889 states to 191889 states and 587772 transitions. [2022-12-14 14:04:38,408 INFO L78 Accepts]: Start accepts. Automaton has 191889 states and 587772 transitions. Word has length 1 [2022-12-14 14:04:38,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:04:38,408 INFO L495 AbstractCegarLoop]: Abstraction has 191889 states and 587772 transitions. [2022-12-14 14:04:38,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:04:38,409 INFO L276 IsEmpty]: Start isEmpty. Operand 191889 states and 587772 transitions. [2022-12-14 14:04:38,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 14:04:38,410 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:04:38,410 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:04:38,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:04:38,411 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2022-12-14 14:04:38,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:04:38,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1409570458, now seen corresponding path program 1 times [2022-12-14 14:04:38,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:04:38,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596769732] [2022-12-14 14:04:38,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:04:38,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:04:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:04:38,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:04:38,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:04:38,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596769732] [2022-12-14 14:04:38,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596769732] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:04:38,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:04:38,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:04:38,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197952637] [2022-12-14 14:04:38,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:04:38,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:04:38,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:04:38,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:04:38,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:04:38,543 INFO L87 Difference]: Start difference. First operand 191889 states and 587772 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:04:41,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:04:41,371 INFO L93 Difference]: Finished difference Result 353809 states and 1084780 transitions. [2022-12-14 14:04:41,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:04:41,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 14:04:41,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:04:42,921 INFO L225 Difference]: With dead ends: 353809 [2022-12-14 14:04:42,922 INFO L226 Difference]: Without dead ends: 353809 [2022-12-14 14:04:42,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:04:42,923 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 173 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:04:42,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 394 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:04:43,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353809 states. [2022-12-14 14:04:48,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353809 to 195569. [2022-12-14 14:04:48,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195569 states, 194947 states have (on average 3.0725479232817126) internal successors, (598984), 195568 states have internal predecessors, (598984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:04:48,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195569 states to 195569 states and 598984 transitions. [2022-12-14 14:04:48,887 INFO L78 Accepts]: Start accepts. Automaton has 195569 states and 598984 transitions. Word has length 11 [2022-12-14 14:04:48,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:04:48,888 INFO L495 AbstractCegarLoop]: Abstraction has 195569 states and 598984 transitions. [2022-12-14 14:04:48,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:04:48,888 INFO L276 IsEmpty]: Start isEmpty. Operand 195569 states and 598984 transitions. [2022-12-14 14:04:48,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 14:04:48,890 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:04:48,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:04:48,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 14:04:48,890 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2022-12-14 14:04:48,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:04:48,891 INFO L85 PathProgramCache]: Analyzing trace with hash 930710744, now seen corresponding path program 1 times [2022-12-14 14:04:48,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:04:48,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295449467] [2022-12-14 14:04:48,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:04:48,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:04:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:04:49,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:04:49,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:04:49,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295449467] [2022-12-14 14:04:49,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295449467] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:04:49,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:04:49,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 14:04:49,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402748864] [2022-12-14 14:04:49,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:04:49,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:04:49,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:04:49,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:04:49,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:04:49,381 INFO L87 Difference]: Start difference. First operand 195569 states and 598984 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:04:52,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:04:52,185 INFO L93 Difference]: Finished difference Result 316761 states and 971908 transitions. [2022-12-14 14:04:52,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:04:52,186 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 14:04:52,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:04:53,303 INFO L225 Difference]: With dead ends: 316761 [2022-12-14 14:04:53,303 INFO L226 Difference]: Without dead ends: 316761 [2022-12-14 14:04:53,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:04:53,304 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 282 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:04:53,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 276 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 14:04:54,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316761 states. [2022-12-14 14:04:58,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316761 to 239609. [2022-12-14 14:04:59,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239609 states, 238987 states have (on average 3.067815404185165) internal successors, (733168), 239608 states have internal predecessors, (733168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:05:00,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239609 states to 239609 states and 733168 transitions. [2022-12-14 14:05:00,011 INFO L78 Accepts]: Start accepts. Automaton has 239609 states and 733168 transitions. Word has length 12 [2022-12-14 14:05:00,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:05:00,011 INFO L495 AbstractCegarLoop]: Abstraction has 239609 states and 733168 transitions. [2022-12-14 14:05:00,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:05:00,012 INFO L276 IsEmpty]: Start isEmpty. Operand 239609 states and 733168 transitions. [2022-12-14 14:05:00,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 14:05:00,013 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:05:00,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:05:00,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 14:05:00,014 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting writer_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2022-12-14 14:05:00,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:05:00,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1415978948, now seen corresponding path program 1 times [2022-12-14 14:05:00,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:05:00,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520660270] [2022-12-14 14:05:00,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:05:00,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:05:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:05:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:05:00,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:05:00,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520660270] [2022-12-14 14:05:00,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520660270] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:05:00,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:05:00,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 14:05:00,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542298044] [2022-12-14 14:05:00,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:05:00,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:05:00,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:05:00,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:05:00,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:05:00,244 INFO L87 Difference]: Start difference. First operand 239609 states and 733168 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:05:03,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:05:03,945 INFO L93 Difference]: Finished difference Result 407257 states and 1247850 transitions. [2022-12-14 14:05:03,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:05:03,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 14:05:03,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:05:05,620 INFO L225 Difference]: With dead ends: 407257 [2022-12-14 14:05:05,620 INFO L226 Difference]: Without dead ends: 407257 [2022-12-14 14:05:05,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:05:05,621 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 317 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:05:05,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 261 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 14:05:06,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407257 states. [2022-12-14 14:05:12,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407257 to 300065. [2022-12-14 14:05:12,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300065 states, 299443 states have (on average 3.0622188530037437) internal successors, (916960), 300064 states have internal predecessors, (916960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:05:13,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300065 states to 300065 states and 916960 transitions. [2022-12-14 14:05:13,822 INFO L78 Accepts]: Start accepts. Automaton has 300065 states and 916960 transitions. Word has length 12 [2022-12-14 14:05:13,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:05:13,822 INFO L495 AbstractCegarLoop]: Abstraction has 300065 states and 916960 transitions. [2022-12-14 14:05:13,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:05:13,823 INFO L276 IsEmpty]: Start isEmpty. Operand 300065 states and 916960 transitions. [2022-12-14 14:05:13,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 14:05:13,826 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:05:13,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:05:13,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 14:05:13,827 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reader_twoErr0ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2022-12-14 14:05:13,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:05:13,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1998305543, now seen corresponding path program 1 times [2022-12-14 14:05:13,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:05:13,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955493809] [2022-12-14 14:05:13,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:05:13,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:05:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:05:14,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:05:14,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:05:14,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955493809] [2022-12-14 14:05:14,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955493809] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:05:14,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:05:14,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 14:05:14,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555940194] [2022-12-14 14:05:14,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:05:14,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:05:14,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:05:14,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:05:14,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:05:14,050 INFO L87 Difference]: Start difference. First operand 300065 states and 916960 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:05:17,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:05:17,594 INFO L93 Difference]: Finished difference Result 426730 states and 1304424 transitions. [2022-12-14 14:05:17,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:05:17,595 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-14 14:05:17,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:05:19,087 INFO L225 Difference]: With dead ends: 426730 [2022-12-14 14:05:19,087 INFO L226 Difference]: Without dead ends: 426730 [2022-12-14 14:05:19,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:05:19,088 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 260 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 14:05:19,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 184 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 14:05:19,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426730 states. [2022-12-14 14:05:25,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426730 to 313783. [2022-12-14 14:05:26,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313783 states, 313170 states have (on average 3.060982852763675) internal successors, (958608), 313782 states have internal predecessors, (958608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:05:27,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313783 states to 313783 states and 958608 transitions. [2022-12-14 14:05:27,449 INFO L78 Accepts]: Start accepts. Automaton has 313783 states and 958608 transitions. Word has length 17 [2022-12-14 14:05:27,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:05:27,449 INFO L495 AbstractCegarLoop]: Abstraction has 313783 states and 958608 transitions. [2022-12-14 14:05:27,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:05:27,450 INFO L276 IsEmpty]: Start isEmpty. Operand 313783 states and 958608 transitions. [2022-12-14 14:05:27,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 14:05:27,452 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:05:27,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:05:27,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 14:05:27,452 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2022-12-14 14:05:27,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:05:27,453 INFO L85 PathProgramCache]: Analyzing trace with hash 773747852, now seen corresponding path program 1 times [2022-12-14 14:05:27,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:05:27,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669656526] [2022-12-14 14:05:27,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:05:27,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:05:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:05:27,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:05:27,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:05:27,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669656526] [2022-12-14 14:05:27,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669656526] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:05:27,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:05:27,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 14:05:27,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735606285] [2022-12-14 14:05:27,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:05:27,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:05:27,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:05:27,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:05:27,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:05:27,627 INFO L87 Difference]: Start difference. First operand 313783 states and 958608 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:05:31,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:05:31,336 INFO L93 Difference]: Finished difference Result 423135 states and 1295928 transitions. [2022-12-14 14:05:31,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:05:31,337 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-14 14:05:31,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:05:33,123 INFO L225 Difference]: With dead ends: 423135 [2022-12-14 14:05:33,123 INFO L226 Difference]: Without dead ends: 423135 [2022-12-14 14:05:33,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:05:33,124 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 268 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 1496 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:05:33,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 303 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 1496 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 14:05:33,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423135 states. [2022-12-14 14:05:39,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423135 to 332231. [2022-12-14 14:05:40,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332231 states, 331621 states have (on average 3.0740393400900428) internal successors, (1019416), 332230 states have internal predecessors, (1019416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:05:41,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332231 states to 332231 states and 1019416 transitions. [2022-12-14 14:05:41,586 INFO L78 Accepts]: Start accepts. Automaton has 332231 states and 1019416 transitions. Word has length 18 [2022-12-14 14:05:41,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:05:41,586 INFO L495 AbstractCegarLoop]: Abstraction has 332231 states and 1019416 transitions. [2022-12-14 14:05:41,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:05:41,587 INFO L276 IsEmpty]: Start isEmpty. Operand 332231 states and 1019416 transitions. [2022-12-14 14:05:41,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 14:05:41,590 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:05:41,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:05:41,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 14:05:41,590 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting writer_fnErr1ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2022-12-14 14:05:41,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:05:41,590 INFO L85 PathProgramCache]: Analyzing trace with hash -834857940, now seen corresponding path program 1 times [2022-12-14 14:05:41,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:05:41,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382084336] [2022-12-14 14:05:41,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:05:41,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:05:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:05:41,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:05:41,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:05:41,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382084336] [2022-12-14 14:05:41,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382084336] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:05:41,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:05:41,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 14:05:41,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540393252] [2022-12-14 14:05:41,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:05:41,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:05:41,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:05:41,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:05:41,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:05:41,757 INFO L87 Difference]: Start difference. First operand 332231 states and 1019416 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:05:45,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:05:45,772 INFO L93 Difference]: Finished difference Result 462005 states and 1420941 transitions. [2022-12-14 14:05:45,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:05:45,773 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-14 14:05:45,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:05:47,921 INFO L225 Difference]: With dead ends: 462005 [2022-12-14 14:05:47,921 INFO L226 Difference]: Without dead ends: 462005 [2022-12-14 14:05:47,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:05:47,922 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 300 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 1750 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 1999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 1750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 14:05:47,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 303 Invalid, 1999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 1750 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 14:05:48,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462005 states. [2022-12-14 14:05:55,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462005 to 354017. [2022-12-14 14:05:55,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354017 states, 353411 states have (on average 3.0882428673697198) internal successors, (1091419), 354016 states have internal predecessors, (1091419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:05:57,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354017 states to 354017 states and 1091419 transitions. [2022-12-14 14:05:57,296 INFO L78 Accepts]: Start accepts. Automaton has 354017 states and 1091419 transitions. Word has length 18 [2022-12-14 14:05:57,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:05:57,297 INFO L495 AbstractCegarLoop]: Abstraction has 354017 states and 1091419 transitions. [2022-12-14 14:05:57,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:05:57,297 INFO L276 IsEmpty]: Start isEmpty. Operand 354017 states and 1091419 transitions. [2022-12-14 14:05:57,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 14:05:57,302 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:05:57,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:05:57,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 14:05:57,303 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reader_twoErr1ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2022-12-14 14:05:57,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:05:57,304 INFO L85 PathProgramCache]: Analyzing trace with hash -984724309, now seen corresponding path program 1 times [2022-12-14 14:05:57,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:05:57,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897552842] [2022-12-14 14:05:57,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:05:57,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:05:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:05:57,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:05:57,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:05:57,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897552842] [2022-12-14 14:05:57,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897552842] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:05:57,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:05:57,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 14:05:57,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484279374] [2022-12-14 14:05:57,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:05:57,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:05:57,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:05:57,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:05:57,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:05:57,487 INFO L87 Difference]: Start difference. First operand 354017 states and 1091419 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)