./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/ring_2w1r-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/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_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_2w1r-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/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_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/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 37b8edad74269e9ff0decb0295cb9343b2467e698f16054f344bf342aab69b21 --- 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 03:18:05,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 03:18:05,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 03:18:05,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 03:18:05,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 03:18:05,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 03:18:05,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 03:18:05,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 03:18:05,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 03:18:05,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 03:18:05,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 03:18:05,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 03:18:05,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 03:18:05,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 03:18:05,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 03:18:05,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 03:18:05,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 03:18:05,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 03:18:05,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 03:18:05,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 03:18:05,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 03:18:05,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 03:18:05,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 03:18:05,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 03:18:05,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 03:18:05,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 03:18:05,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 03:18:05,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 03:18:05,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 03:18:05,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 03:18:05,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 03:18:05,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 03:18:05,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 03:18:05,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 03:18:05,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 03:18:05,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 03:18:05,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 03:18:05,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 03:18:05,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 03:18:05,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 03:18:05,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 03:18:05,203 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/bin/utaipan-gh47qXpMRh/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-12-14 03:18:05,216 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 03:18:05,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 03:18:05,217 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 03:18:05,217 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 03:18:05,217 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 03:18:05,217 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 03:18:05,217 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 03:18:05,218 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 03:18:05,218 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 03:18:05,218 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 03:18:05,218 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 03:18:05,218 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 03:18:05,218 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 03:18:05,218 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 03:18:05,218 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 03:18:05,219 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 03:18:05,219 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 03:18:05,219 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 03:18:05,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 03:18:05,219 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 03:18:05,219 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 03:18:05,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 03:18:05,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 03:18:05,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 03:18:05,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 03:18:05,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 03:18:05,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 03:18:05,220 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-14 03:18:05,220 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 03:18:05,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 03:18:05,221 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 03:18:05,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 03:18:05,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 03:18:05,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 03:18:05,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:18:05,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 03:18:05,221 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 03:18:05,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 03:18:05,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 03:18:05,222 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 03:18:05,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 03:18:05,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 03:18:05,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 03:18:05,222 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_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37b8edad74269e9ff0decb0295cb9343b2467e698f16054f344bf342aab69b21 [2022-12-14 03:18:05,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 03:18:05,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 03:18:05,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 03:18:05,417 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 03:18:05,418 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 03:18:05,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread-divine/ring_2w1r-2.i [2022-12-14 03:18:08,027 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 03:18:08,239 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 03:18:08,240 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i [2022-12-14 03:18:08,258 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/bin/utaipan-gh47qXpMRh/data/c56633aba/ee9363baee314915968be1881656a28d/FLAGde5bc144f [2022-12-14 03:18:08,271 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/bin/utaipan-gh47qXpMRh/data/c56633aba/ee9363baee314915968be1881656a28d [2022-12-14 03:18:08,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 03:18:08,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 03:18:08,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 03:18:08,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 03:18:08,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 03:18:08,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:18:08" (1/1) ... [2022-12-14 03:18:08,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fef9cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:08, skipping insertion in model container [2022-12-14 03:18:08,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:18:08" (1/1) ... [2022-12-14 03:18:08,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 03:18:08,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 03:18:08,451 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 03:18:08,666 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_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[39095,39108] [2022-12-14 03:18:08,668 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_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[39180,39193] [2022-12-14 03:18:08,669 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_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[39232,39245] [2022-12-14 03:18:08,718 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_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[49285,49298] [2022-12-14 03:18:08,719 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_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[49334,49347] [2022-12-14 03:18:08,721 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_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[49462,49475] [2022-12-14 03:18:08,721 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_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[49520,49533] [2022-12-14 03:18:08,727 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:18:08,732 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 03:18:08,741 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 03:18:08,771 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_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[39095,39108] [2022-12-14 03:18:08,771 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_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[39180,39193] [2022-12-14 03:18:08,772 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_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[39232,39245] [2022-12-14 03:18:08,783 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_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[49285,49298] [2022-12-14 03:18:08,783 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_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[49334,49347] [2022-12-14 03:18:08,786 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_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[49462,49475] [2022-12-14 03:18:08,787 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_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[49520,49533] [2022-12-14 03:18:08,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:18:08,834 INFO L208 MainTranslator]: Completed translation [2022-12-14 03:18:08,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:08 WrapperNode [2022-12-14 03:18:08,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 03:18:08,835 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 03:18:08,835 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 03:18:08,835 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 03:18:08,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:08" (1/1) ... [2022-12-14 03:18:08,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:08" (1/1) ... [2022-12-14 03:18:08,888 INFO L138 Inliner]: procedures = 309, calls = 63, calls flagged for inlining = 10, calls inlined = 8, statements flattened = 336 [2022-12-14 03:18:08,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 03:18:08,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 03:18:08,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 03:18:08,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 03:18:08,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:08" (1/1) ... [2022-12-14 03:18:08,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:08" (1/1) ... [2022-12-14 03:18:08,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:08" (1/1) ... [2022-12-14 03:18:08,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:08" (1/1) ... [2022-12-14 03:18:08,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:08" (1/1) ... [2022-12-14 03:18:08,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:08" (1/1) ... [2022-12-14 03:18:08,931 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:08" (1/1) ... [2022-12-14 03:18:08,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:08" (1/1) ... [2022-12-14 03:18:08,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 03:18:08,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 03:18:08,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 03:18:08,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 03:18:08,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:08" (1/1) ... [2022-12-14 03:18:08,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:18:08,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:18:08,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 03:18:08,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7c5e0d-7951-4478-86fa-e58a9a4ab5b7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 03:18:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2022-12-14 03:18:09,017 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2022-12-14 03:18:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2022-12-14 03:18:09,017 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2022-12-14 03:18:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 03:18:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 03:18:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 03:18:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 03:18:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 03:18:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 03:18:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 03:18:09,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 03:18:09,019 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 03:18:09,135 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 03:18:09,137 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 03:18:09,637 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 03:18:09,647 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 03:18:09,647 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-14 03:18:09,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:18:09 BoogieIcfgContainer [2022-12-14 03:18:09,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 03:18:09,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 03:18:09,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 03:18:09,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 03:18:09,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:18:08" (1/3) ... [2022-12-14 03:18:09,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36af0330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:18:09, skipping insertion in model container [2022-12-14 03:18:09,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:18:08" (2/3) ... [2022-12-14 03:18:09,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36af0330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:18:09, skipping insertion in model container [2022-12-14 03:18:09,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:18:09" (3/3) ... [2022-12-14 03:18:09,658 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-2.i [2022-12-14 03:18:09,666 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 03:18:09,676 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 03:18:09,677 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-12-14 03:18:09,677 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 03:18:09,820 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 03:18:09,857 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 03:18:09,878 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 378 places, 388 transitions, 792 flow [2022-12-14 03:18:09,881 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 378 places, 388 transitions, 792 flow [2022-12-14 03:18:09,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 388 transitions, 792 flow [2022-12-14 03:18:10,013 INFO L130 PetriNetUnfolder]: 17/386 cut-off events. [2022-12-14 03:18:10,013 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-14 03:18:10,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 386 events. 17/386 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 898 event pairs, 0 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 321. Up to 2 conditions per place. [2022-12-14 03:18:10,044 INFO L119 LiptonReduction]: Number of co-enabled transitions 64100 [2022-12-14 03:18:24,185 INFO L134 LiptonReduction]: Checked pairs total: 585151 [2022-12-14 03:18:24,185 INFO L136 LiptonReduction]: Total number of compositions: 232 [2022-12-14 03:18:24,192 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 198 places, 202 transitions, 420 flow [2022-12-14 03:18:26,912 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 184123 states, 183499 states have (on average 3.1411942299413074) internal successors, (576406), 184122 states have internal predecessors, (576406), 0 states have call successors, (0), 0 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 03:18:26,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 03:18:26,936 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;@33e0b624, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 03:18:26,936 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2022-12-14 03:18:27,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 184123 states, 183499 states have (on average 3.1411942299413074) internal successors, (576406), 184122 states have internal predecessors, (576406), 0 states have call successors, (0), 0 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 03:18:27,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-12-14 03:18:27,145 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:18:27,146 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-12-14 03:18:27,146 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 03:18:27,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:18:27,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1334, now seen corresponding path program 1 times [2022-12-14 03:18:27,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:18:27,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918998155] [2022-12-14 03:18:27,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:18:27,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:18:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:18:27,241 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 03:18:27,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:18:27,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918998155] [2022-12-14 03:18:27,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918998155] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:18:27,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:18:27,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-14 03:18:27,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972013458] [2022-12-14 03:18:27,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:18:27,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 03:18:27,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:18:27,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 03:18:27,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 03:18:27,498 INFO L87 Difference]: Start difference. First operand has 184123 states, 183499 states have (on average 3.1411942299413074) internal successors, (576406), 184122 states have internal predecessors, (576406), 0 states have call successors, (0), 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 03:18:28,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:18:28,956 INFO L93 Difference]: Finished difference Result 184121 states and 564122 transitions. [2022-12-14 03:18:28,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 03:18:28,959 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 03:18:28,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:18:29,817 INFO L225 Difference]: With dead ends: 184121 [2022-12-14 03:18:29,817 INFO L226 Difference]: Without dead ends: 184121 [2022-12-14 03:18:29,818 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 03:18:29,820 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:18:29,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 148 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:18:30,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184121 states. [2022-12-14 03:18:33,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184121 to 184121. [2022-12-14 03:18:33,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184121 states, 183499 states have (on average 3.07425108583698) internal successors, (564122), 184120 states have internal predecessors, (564122), 0 states have call successors, (0), 0 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 03:18:34,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184121 states to 184121 states and 564122 transitions. [2022-12-14 03:18:34,814 INFO L78 Accepts]: Start accepts. Automaton has 184121 states and 564122 transitions. Word has length 1 [2022-12-14 03:18:34,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:18:34,815 INFO L495 AbstractCegarLoop]: Abstraction has 184121 states and 564122 transitions. [2022-12-14 03:18:34,815 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 03:18:34,815 INFO L276 IsEmpty]: Start isEmpty. Operand 184121 states and 564122 transitions. [2022-12-14 03:18:34,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 03:18:34,818 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:18:34,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:18:34,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 03:18:34,819 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 03:18:34,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:18:34,819 INFO L85 PathProgramCache]: Analyzing trace with hash -4471781, now seen corresponding path program 1 times [2022-12-14 03:18:34,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:18:34,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027344082] [2022-12-14 03:18:34,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:18:34,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:18:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:18:34,973 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 03:18:34,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:18:34,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027344082] [2022-12-14 03:18:34,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027344082] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:18:34,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:18:34,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 03:18:34,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547705745] [2022-12-14 03:18:34,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:18:34,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:18:34,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:18:34,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:18:34,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:18:34,977 INFO L87 Difference]: Start difference. First operand 184121 states and 564122 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 03:18:37,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:18:37,809 INFO L93 Difference]: Finished difference Result 338921 states and 1039432 transitions. [2022-12-14 03:18:37,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:18:37,810 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 03:18:37,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:18:39,132 INFO L225 Difference]: With dead ends: 338921 [2022-12-14 03:18:39,132 INFO L226 Difference]: Without dead ends: 338921 [2022-12-14 03:18:39,133 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 03:18:39,134 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 171 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:18:39,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 397 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:18:39,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338921 states. [2022-12-14 03:18:44,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338921 to 187721. [2022-12-14 03:18:44,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187721 states, 187099 states have (on average 3.073731019406838) internal successors, (575092), 187720 states have internal predecessors, (575092), 0 states have call successors, (0), 0 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 03:18:45,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187721 states to 187721 states and 575092 transitions. [2022-12-14 03:18:45,163 INFO L78 Accepts]: Start accepts. Automaton has 187721 states and 575092 transitions. Word has length 11 [2022-12-14 03:18:45,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:18:45,163 INFO L495 AbstractCegarLoop]: Abstraction has 187721 states and 575092 transitions. [2022-12-14 03:18:45,164 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 03:18:45,164 INFO L276 IsEmpty]: Start isEmpty. Operand 187721 states and 575092 transitions. [2022-12-14 03:18:45,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 03:18:45,165 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:18:45,165 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:18:45,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 03:18:45,165 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting writer_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2022-12-14 03:18:45,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:18:45,166 INFO L85 PathProgramCache]: Analyzing trace with hash 675976996, now seen corresponding path program 1 times [2022-12-14 03:18:45,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:18:45,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123582237] [2022-12-14 03:18:45,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:18:45,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:18:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:18:45,457 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 03:18:45,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:18:45,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123582237] [2022-12-14 03:18:45,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123582237] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:18:45,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:18:45,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 03:18:45,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045198524] [2022-12-14 03:18:45,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:18:45,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 03:18:45,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:18:45,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 03:18:45,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 03:18:45,460 INFO L87 Difference]: Start difference. First operand 187721 states and 575092 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 03:18:48,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:18:48,275 INFO L93 Difference]: Finished difference Result 324769 states and 996196 transitions. [2022-12-14 03:18:48,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 03:18:48,276 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 03:18:48,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:18:49,648 INFO L225 Difference]: With dead ends: 324769 [2022-12-14 03:18:49,648 INFO L226 Difference]: Without dead ends: 324769 [2022-12-14 03:18:49,648 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 03:18:49,649 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 302 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 1758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:18:49,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 286 Invalid, 1758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 03:18:50,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324769 states. [2022-12-14 03:18:54,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324769 to 237497. [2022-12-14 03:18:55,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237497 states, 236875 states have (on average 3.0671535620052772) internal successors, (726532), 237496 states have internal predecessors, (726532), 0 states have call successors, (0), 0 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 03:18:55,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237497 states to 237497 states and 726532 transitions. [2022-12-14 03:18:55,816 INFO L78 Accepts]: Start accepts. Automaton has 237497 states and 726532 transitions. Word has length 12 [2022-12-14 03:18:55,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:18:55,817 INFO L495 AbstractCegarLoop]: Abstraction has 237497 states and 726532 transitions. [2022-12-14 03:18:55,817 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 03:18:55,818 INFO L276 IsEmpty]: Start isEmpty. Operand 237497 states and 726532 transitions. [2022-12-14 03:18:55,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 03:18:55,819 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:18:55,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:18:55,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 03:18:55,819 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2022-12-14 03:18:55,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:18:55,819 INFO L85 PathProgramCache]: Analyzing trace with hash 331742550, now seen corresponding path program 1 times [2022-12-14 03:18:55,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:18:55,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034200833] [2022-12-14 03:18:55,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:18:55,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:18:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:18:56,280 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 03:18:56,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:18:56,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034200833] [2022-12-14 03:18:56,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034200833] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:18:56,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:18:56,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 03:18:56,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149023807] [2022-12-14 03:18:56,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:18:56,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 03:18:56,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:18:56,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 03:18:56,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 03:18:56,283 INFO L87 Difference]: Start difference. First operand 237497 states and 726532 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 03:18:59,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:18:59,746 INFO L93 Difference]: Finished difference Result 384009 states and 1176902 transitions. [2022-12-14 03:18:59,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 03:18:59,746 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 03:18:59,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:19:01,056 INFO L225 Difference]: With dead ends: 384009 [2022-12-14 03:19:01,056 INFO L226 Difference]: Without dead ends: 384009 [2022-12-14 03:19:01,056 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 03:19:01,057 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 289 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 03:19:01,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 262 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 03:19:01,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384009 states. [2022-12-14 03:19:07,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384009 to 290297. [2022-12-14 03:19:07,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290297 states, 289675 states have (on average 3.0629498575990333) internal successors, (887260), 290296 states have internal predecessors, (887260), 0 states have call successors, (0), 0 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 03:19:08,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290297 states to 290297 states and 887260 transitions. [2022-12-14 03:19:08,834 INFO L78 Accepts]: Start accepts. Automaton has 290297 states and 887260 transitions. Word has length 12 [2022-12-14 03:19:08,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:19:08,834 INFO L495 AbstractCegarLoop]: Abstraction has 290297 states and 887260 transitions. [2022-12-14 03:19:08,834 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 03:19:08,834 INFO L276 IsEmpty]: Start isEmpty. Operand 290297 states and 887260 transitions. [2022-12-14 03:19:08,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 03:19:08,836 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:19:08,836 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 03:19:08,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 03:19:08,836 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 03:19:08,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:19:08,836 INFO L85 PathProgramCache]: Analyzing trace with hash -261483889, now seen corresponding path program 1 times [2022-12-14 03:19:08,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:19:08,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356137322] [2022-12-14 03:19:08,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:19:08,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:19:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:19:08,985 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 03:19:08,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:19:08,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356137322] [2022-12-14 03:19:08,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356137322] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:19:08,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:19:08,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 03:19:08,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939371997] [2022-12-14 03:19:08,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:19:08,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 03:19:08,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:19:08,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 03:19:08,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 03:19:08,987 INFO L87 Difference]: Start difference. First operand 290297 states and 887260 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 03:19:12,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:19:12,375 INFO L93 Difference]: Finished difference Result 412562 states and 1261338 transitions. [2022-12-14 03:19:12,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 03:19:12,376 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 03:19:12,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:19:14,037 INFO L225 Difference]: With dead ends: 412562 [2022-12-14 03:19:14,037 INFO L226 Difference]: Without dead ends: 412562 [2022-12-14 03:19:14,037 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 03:19:14,038 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 252 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 03:19:14,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 205 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 03:19:14,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412562 states. [2022-12-14 03:19:20,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412562 to 303527. [2022-12-14 03:19:20,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303527 states, 302914 states have (on average 3.061713885789366) internal successors, (927436), 303526 states have internal predecessors, (927436), 0 states have call successors, (0), 0 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 03:19:22,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303527 states to 303527 states and 927436 transitions. [2022-12-14 03:19:22,068 INFO L78 Accepts]: Start accepts. Automaton has 303527 states and 927436 transitions. Word has length 17 [2022-12-14 03:19:22,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:19:22,068 INFO L495 AbstractCegarLoop]: Abstraction has 303527 states and 927436 transitions. [2022-12-14 03:19:22,068 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 03:19:22,068 INFO L276 IsEmpty]: Start isEmpty. Operand 303527 states and 927436 transitions. [2022-12-14 03:19:22,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 03:19:22,070 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:19:22,070 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 03:19:22,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 03:19:22,070 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting writer_fnErr1ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2022-12-14 03:19:22,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:19:22,071 INFO L85 PathProgramCache]: Analyzing trace with hash -777840372, now seen corresponding path program 1 times [2022-12-14 03:19:22,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:19:22,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621817934] [2022-12-14 03:19:22,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:19:22,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:19:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:19:22,220 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 03:19:22,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:19:22,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621817934] [2022-12-14 03:19:22,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621817934] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:19:22,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:19:22,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 03:19:22,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596936646] [2022-12-14 03:19:22,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:19:22,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 03:19:22,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:19:22,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 03:19:22,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 03:19:22,222 INFO L87 Difference]: Start difference. First operand 303527 states and 927436 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 03:19:25,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:19:25,928 INFO L93 Difference]: Finished difference Result 424486 states and 1300168 transitions. [2022-12-14 03:19:25,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 03:19:25,929 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 03:19:25,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:19:27,545 INFO L225 Difference]: With dead ends: 424486 [2022-12-14 03:19:27,546 INFO L226 Difference]: Without dead ends: 424486 [2022-12-14 03:19:27,546 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 03:19:27,546 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 296 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 1486 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 1735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 1486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 03:19:27,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 298 Invalid, 1735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 1486 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 03:19:28,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424486 states. [2022-12-14 03:19:34,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424486 to 323958. [2022-12-14 03:19:34,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323958 states, 323348 states have (on average 3.076276952385665) internal successors, (994708), 323957 states have internal predecessors, (994708), 0 states have call successors, (0), 0 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 03:19:36,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323958 states to 323958 states and 994708 transitions. [2022-12-14 03:19:36,066 INFO L78 Accepts]: Start accepts. Automaton has 323958 states and 994708 transitions. Word has length 18 [2022-12-14 03:19:36,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:19:36,066 INFO L495 AbstractCegarLoop]: Abstraction has 323958 states and 994708 transitions. [2022-12-14 03:19:36,066 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 03:19:36,066 INFO L276 IsEmpty]: Start isEmpty. Operand 323958 states and 994708 transitions. [2022-12-14 03:19:36,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 03:19:36,068 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:19:36,068 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 03:19:36,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 03:19:36,069 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2022-12-14 03:19:36,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:19:36,069 INFO L85 PathProgramCache]: Analyzing trace with hash -264407267, now seen corresponding path program 1 times [2022-12-14 03:19:36,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:19:36,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145444303] [2022-12-14 03:19:36,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:19:36,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:19:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:19:36,211 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 03:19:36,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:19:36,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145444303] [2022-12-14 03:19:36,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145444303] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:19:36,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:19:36,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 03:19:36,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307221396] [2022-12-14 03:19:36,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:19:36,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 03:19:36,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:19:36,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 03:19:36,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 03:19:36,213 INFO L87 Difference]: Start difference. First operand 323958 states and 994708 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 03:19:39,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:19:39,547 INFO L93 Difference]: Finished difference Result 438261 states and 1348969 transitions. [2022-12-14 03:19:39,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 03:19:39,548 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 03:19:39,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:19:41,069 INFO L225 Difference]: With dead ends: 438261 [2022-12-14 03:19:41,069 INFO L226 Difference]: Without dead ends: 438261 [2022-12-14 03:19:41,069 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 03:19:41,070 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 272 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:19:41,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 289 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 03:19:42,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438261 states. [2022-12-14 03:19:48,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438261 to 343089. [2022-12-14 03:19:48,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343089 states, 342483 states have (on average 3.0893416607539645) internal successors, (1058047), 343088 states have internal predecessors, (1058047), 0 states have call successors, (0), 0 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 03:19:49,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343089 states to 343089 states and 1058047 transitions. [2022-12-14 03:19:49,984 INFO L78 Accepts]: Start accepts. Automaton has 343089 states and 1058047 transitions. Word has length 18 [2022-12-14 03:19:49,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:19:49,984 INFO L495 AbstractCegarLoop]: Abstraction has 343089 states and 1058047 transitions. [2022-12-14 03:19:49,984 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 03:19:49,984 INFO L276 IsEmpty]: Start isEmpty. Operand 343089 states and 1058047 transitions. [2022-12-14 03:19:49,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 03:19:49,990 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:19:49,990 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 03:19:49,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 03:19:49,990 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 03:19:49,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:19:49,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2094217613, now seen corresponding path program 1 times [2022-12-14 03:19:49,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:19:49,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151007690] [2022-12-14 03:19:49,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:19:49,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:19:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:19:50,153 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 03:19:50,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:19:50,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151007690] [2022-12-14 03:19:50,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151007690] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:19:50,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:19:50,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 03:19:50,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695447491] [2022-12-14 03:19:50,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:19:50,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 03:19:50,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:19:50,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 03:19:50,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 03:19:50,155 INFO L87 Difference]: Start difference. First operand 343089 states and 1058047 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) [2022-12-14 03:19:53,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:19:53,483 INFO L93 Difference]: Finished difference Result 450934 states and 1391073 transitions. [2022-12-14 03:19:53,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 03:19:53,484 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 23 [2022-12-14 03:19:53,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:19:55,074 INFO L225 Difference]: With dead ends: 450934 [2022-12-14 03:19:55,074 INFO L226 Difference]: Without dead ends: 450934 [2022-12-14 03:19:55,074 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 03:19:55,075 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 226 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 03:19:55,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 219 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 03:19:56,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450934 states.