./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 5e519f3a 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_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_2w1r-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/bin/utaipan-7li7fVZpFI/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/bin/utaipan-7li7fVZpFI --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-5e519f3 [2022-11-03 02:12:24,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:12:24,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:12:24,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:12:24,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:12:24,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:12:24,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:12:24,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:12:24,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:12:25,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:12:25,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:12:25,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:12:25,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:12:25,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:12:25,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:12:25,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:12:25,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:12:25,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:12:25,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:12:25,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:12:25,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:12:25,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:12:25,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:12:25,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:12:25,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:12:25,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:12:25,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:12:25,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:12:25,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:12:25,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:12:25,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:12:25,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:12:25,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:12:25,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:12:25,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:12:25,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:12:25,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:12:25,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:12:25,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:12:25,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:12:25,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:12:25,078 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/bin/utaipan-7li7fVZpFI/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-03 02:12:25,129 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:12:25,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:12:25,131 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:12:25,131 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:12:25,132 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:12:25,133 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:12:25,133 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:12:25,133 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:12:25,134 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:12:25,134 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:12:25,135 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:12:25,136 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:12:25,136 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:12:25,136 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:12:25,137 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:12:25,137 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:12:25,137 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:12:25,137 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:12:25,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:12:25,139 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:12:25,139 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 02:12:25,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:12:25,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:12:25,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:12:25,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:12:25,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:12:25,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:12:25,143 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-03 02:12:25,143 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:12:25,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:12:25,144 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:12:25,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:12:25,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:12:25,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:12:25,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:12:25,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:12:25,146 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:12:25,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:12:25,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:12:25,147 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:12:25,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:12:25,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:12:25,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:12:25,148 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_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37b8edad74269e9ff0decb0295cb9343b2467e698f16054f344bf342aab69b21 [2022-11-03 02:12:25,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:12:25,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:12:25,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:12:25,535 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:12:25,536 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:12:25,538 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/pthread-divine/ring_2w1r-2.i [2022-11-03 02:12:25,646 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/bin/utaipan-7li7fVZpFI/data/e3ccda725/e17d28af88d24ebba602e7718610747c/FLAG5d911361e [2022-11-03 02:12:26,356 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:12:26,357 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i [2022-11-03 02:12:26,381 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/bin/utaipan-7li7fVZpFI/data/e3ccda725/e17d28af88d24ebba602e7718610747c/FLAG5d911361e [2022-11-03 02:12:26,603 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/bin/utaipan-7li7fVZpFI/data/e3ccda725/e17d28af88d24ebba602e7718610747c [2022-11-03 02:12:26,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:12:26,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:12:26,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:12:26,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:12:26,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:12:26,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:12:26" (1/1) ... [2022-11-03 02:12:26,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ef0f26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:26, skipping insertion in model container [2022-11-03 02:12:26,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:12:26" (1/1) ... [2022-11-03 02:12:26,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:12:26,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:12:26,944 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-03 02:12:27,393 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[39095,39108] [2022-11-03 02:12:27,396 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[39180,39193] [2022-11-03 02:12:27,396 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[39232,39245] [2022-11-03 02:12:27,502 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[49285,49298] [2022-11-03 02:12:27,503 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[49334,49347] [2022-11-03 02:12:27,505 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[49462,49475] [2022-11-03 02:12:27,506 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[49520,49533] [2022-11-03 02:12:27,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:12:27,532 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:12:27,562 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-03 02:12:27,616 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[39095,39108] [2022-11-03 02:12:27,623 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[39180,39193] [2022-11-03 02:12:27,625 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[39232,39245] [2022-11-03 02:12:27,648 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[49285,49298] [2022-11-03 02:12:27,650 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[49334,49347] [2022-11-03 02:12:27,657 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[49462,49475] [2022-11-03 02:12:27,661 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i[49520,49533] [2022-11-03 02:12:27,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:12:27,763 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:12:27,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:27 WrapperNode [2022-11-03 02:12:27,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:12:27,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:12:27,769 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:12:27,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:12:27,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:27" (1/1) ... [2022-11-03 02:12:27,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:27" (1/1) ... [2022-11-03 02:12:27,903 INFO L138 Inliner]: procedures = 309, calls = 63, calls flagged for inlining = 10, calls inlined = 8, statements flattened = 336 [2022-11-03 02:12:27,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:12:27,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:12:27,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:12:27,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:12:27,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:27" (1/1) ... [2022-11-03 02:12:27,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:27" (1/1) ... [2022-11-03 02:12:27,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:27" (1/1) ... [2022-11-03 02:12:27,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:27" (1/1) ... [2022-11-03 02:12:27,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:27" (1/1) ... [2022-11-03 02:12:28,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:27" (1/1) ... [2022-11-03 02:12:28,029 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:27" (1/1) ... [2022-11-03 02:12:28,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:27" (1/1) ... [2022-11-03 02:12:28,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:12:28,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:12:28,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:12:28,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:12:28,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:27" (1/1) ... [2022-11-03 02:12:28,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:12:28,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:12:28,104 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:12:28,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fa162c-746a-4d7f-be6a-8bcd4fc4c270/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:12:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2022-11-03 02:12:28,156 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2022-11-03 02:12:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2022-11-03 02:12:28,156 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2022-11-03 02:12:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:12:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:12:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:12:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:12:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:12:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:12:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:12:28,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:12:28,159 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 02:12:28,369 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:12:28,372 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:12:29,307 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:12:29,322 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:12:29,328 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-03 02:12:29,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:12:29 BoogieIcfgContainer [2022-11-03 02:12:29,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:12:29,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:12:29,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:12:29,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:12:29,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:12:26" (1/3) ... [2022-11-03 02:12:29,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1972b261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:12:29, skipping insertion in model container [2022-11-03 02:12:29,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:27" (2/3) ... [2022-11-03 02:12:29,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1972b261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:12:29, skipping insertion in model container [2022-11-03 02:12:29,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:12:29" (3/3) ... [2022-11-03 02:12:29,352 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-2.i [2022-11-03 02:12:29,365 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 02:12:29,380 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:12:29,381 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-03 02:12:29,381 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 02:12:29,633 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-03 02:12:29,714 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 02:12:29,736 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 378 places, 388 transitions, 792 flow [2022-11-03 02:12:29,747 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 378 places, 388 transitions, 792 flow [2022-11-03 02:12:29,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 388 transitions, 792 flow [2022-11-03 02:12:30,061 INFO L130 PetriNetUnfolder]: 17/386 cut-off events. [2022-11-03 02:12:30,061 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-03 02:12:30,080 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 900 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. [2022-11-03 02:12:30,114 INFO L118 LiptonReduction]: Number of co-enabled transitions 64100 [2022-11-03 02:12:50,924 INFO L133 LiptonReduction]: Checked pairs total: 501835 [2022-11-03 02:12:50,924 INFO L135 LiptonReduction]: Total number of compositions: 231 [2022-11-03 02:12:50,941 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 198 places, 203 transitions, 422 flow [2022-11-03 02:12:59,273 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 184123 states, 183499 states have (on average 3.1537120093297513) internal successors, (578703), 184122 states have internal predecessors, (578703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:12:59,347 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:12:59,371 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;@7e15f602, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:12:59,372 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2022-11-03 02:12:59,667 INFO L276 IsEmpty]: Start isEmpty. Operand has 184123 states, 183499 states have (on average 3.1537120093297513) internal successors, (578703), 184122 states have internal predecessors, (578703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:12:59,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-03 02:12:59,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:12:59,675 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-03 02:12:59,676 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)] === [2022-11-03 02:12:59,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:12:59,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1336, now seen corresponding path program 1 times [2022-11-03 02:12:59,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:12:59,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287615158] [2022-11-03 02:12:59,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:12:59,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:12:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:12:59,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:12:59,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:12:59,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287615158] [2022-11-03 02:12:59,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287615158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:12:59,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:12:59,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-03 02:12:59,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645432338] [2022-11-03 02:12:59,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:12:59,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:12:59,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:12:59,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:12:59,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:13:00,330 INFO L87 Difference]: Start difference. First operand has 184123 states, 183499 states have (on average 3.1537120093297513) internal successors, (578703), 184122 states have internal predecessors, (578703), 0 states have call successors, (0), 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) [2022-11-03 02:13:04,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:04,026 INFO L93 Difference]: Finished difference Result 184121 states and 564122 transitions. [2022-11-03 02:13:04,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:13:04,031 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 [2022-11-03 02:13:04,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:05,700 INFO L225 Difference]: With dead ends: 184121 [2022-11-03 02:13:05,701 INFO L226 Difference]: Without dead ends: 184121 [2022-11-03 02:13:05,702 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 [2022-11-03 02:13:05,707 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:05,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 147 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:13:07,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184121 states. [2022-11-03 02:13:13,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184121 to 184121. [2022-11-03 02:13:14,666 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) [2022-11-03 02:13:15,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184121 states to 184121 states and 564122 transitions. [2022-11-03 02:13:16,001 INFO L78 Accepts]: Start accepts. Automaton has 184121 states and 564122 transitions. Word has length 1 [2022-11-03 02:13:16,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:16,002 INFO L495 AbstractCegarLoop]: Abstraction has 184121 states and 564122 transitions. [2022-11-03 02:13:16,002 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) [2022-11-03 02:13:16,002 INFO L276 IsEmpty]: Start isEmpty. Operand 184121 states and 564122 transitions. [2022-11-03 02:13:16,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 02:13:16,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:16,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:13:16,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:13:16,007 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)] === [2022-11-03 02:13:16,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:16,008 INFO L85 PathProgramCache]: Analyzing trace with hash 239916755, now seen corresponding path program 1 times [2022-11-03 02:13:16,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:16,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653499513] [2022-11-03 02:13:16,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:16,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:16,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:13:16,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:16,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653499513] [2022-11-03 02:13:16,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653499513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:16,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:16,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:13:16,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931574637] [2022-11-03 02:13:16,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:16,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:13:16,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:16,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:13:16,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:16,348 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) [2022-11-03 02:13:20,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:20,715 INFO L93 Difference]: Finished difference Result 338921 states and 1039432 transitions. [2022-11-03 02:13:20,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:13:20,716 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 [2022-11-03 02:13:20,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:23,385 INFO L225 Difference]: With dead ends: 338921 [2022-11-03 02:13:23,386 INFO L226 Difference]: Without dead ends: 338921 [2022-11-03 02:13:23,387 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 [2022-11-03 02:13:23,390 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 171 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:23,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 394 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:13:24,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338921 states. [2022-11-03 02:13:31,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338921 to 187721. [2022-11-03 02:13:31,866 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) [2022-11-03 02:13:34,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187721 states to 187721 states and 575092 transitions. [2022-11-03 02:13:34,061 INFO L78 Accepts]: Start accepts. Automaton has 187721 states and 575092 transitions. Word has length 11 [2022-11-03 02:13:34,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:34,062 INFO L495 AbstractCegarLoop]: Abstraction has 187721 states and 575092 transitions. [2022-11-03 02:13:34,063 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) [2022-11-03 02:13:34,068 INFO L276 IsEmpty]: Start isEmpty. Operand 187721 states and 575092 transitions. [2022-11-03 02:13:34,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 02:13:34,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:34,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:13:34,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:13:34,083 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)] === [2022-11-03 02:13:34,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:34,085 INFO L85 PathProgramCache]: Analyzing trace with hash -673195613, now seen corresponding path program 1 times [2022-11-03 02:13:34,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:34,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496407144] [2022-11-03 02:13:34,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:34,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:13:34,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:34,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496407144] [2022-11-03 02:13:34,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496407144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:34,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:34,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:13:34,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492432784] [2022-11-03 02:13:34,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:34,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:13:34,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:34,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:13:34,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:13:34,667 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) [2022-11-03 02:13:40,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:40,530 INFO L93 Difference]: Finished difference Result 324769 states and 996196 transitions. [2022-11-03 02:13:40,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:13:40,530 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 [2022-11-03 02:13:40,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:43,673 INFO L225 Difference]: With dead ends: 324769 [2022-11-03 02:13:43,673 INFO L226 Difference]: Without dead ends: 324769 [2022-11-03 02:13:43,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:13:43,675 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 302 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 1533 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:43,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 246 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1533 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 02:13:44,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324769 states.