./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54151eaa-2e0c-4a97-9c1a-c9212577c576/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54151eaa-2e0c-4a97-9c1a-c9212577c576/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_54151eaa-2e0c-4a97-9c1a-c9212577c576/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54151eaa-2e0c-4a97-9c1a-c9212577c576/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54151eaa-2e0c-4a97-9c1a-c9212577c576/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_54151eaa-2e0c-4a97-9c1a-c9212577c576/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 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 --- 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 11:34:46,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:34:46,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:34:46,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:34:46,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:34:46,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:34:46,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:34:46,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:34:46,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:34:46,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:34:46,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:34:46,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:34:46,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:34:46,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:34:46,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:34:46,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:34:46,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:34:46,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:34:46,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:34:46,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:34:46,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:34:46,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:34:46,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:34:46,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:34:46,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:34:46,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:34:46,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:34:46,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:34:46,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:34:46,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:34:46,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:34:46,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:34:46,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:34:46,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:34:46,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:34:46,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:34:46,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:34:46,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:34:46,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:34:46,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:34:46,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:34:46,223 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54151eaa-2e0c-4a97-9c1a-c9212577c576/bin/utaipan-gh47qXpMRh/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-12-14 11:34:46,242 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:34:46,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:34:46,243 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:34:46,243 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:34:46,243 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:34:46,244 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:34:46,244 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:34:46,244 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:34:46,244 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:34:46,244 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:34:46,244 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:34:46,244 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:34:46,245 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:34:46,245 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:34:46,245 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:34:46,245 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:34:46,245 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:34:46,245 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:34:46,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:34:46,246 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:34:46,246 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 11:34:46,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:34:46,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:34:46,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:34:46,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:34:46,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:34:46,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:34:46,248 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-14 11:34:46,248 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:34:46,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:34:46,248 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:34:46,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:34:46,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:34:46,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:34:46,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:34:46,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:34:46,249 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:34:46,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:34:46,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:34:46,250 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:34:46,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:34:46,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:34:46,250 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:34:46,250 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_54151eaa-2e0c-4a97-9c1a-c9212577c576/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54151eaa-2e0c-4a97-9c1a-c9212577c576/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 [2022-12-14 11:34:46,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:34:46,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:34:46,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:34:46,466 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:34:46,466 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:34:46,467 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54151eaa-2e0c-4a97-9c1a-c9212577c576/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2022-12-14 11:34:49,031 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:34:49,216 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:34:49,216 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54151eaa-2e0c-4a97-9c1a-c9212577c576/sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2022-12-14 11:34:49,224 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54151eaa-2e0c-4a97-9c1a-c9212577c576/bin/utaipan-gh47qXpMRh/data/16177496f/1646dad63b3d44cd9ba4ba7d29a24f81/FLAG9bc0ee4cf [2022-12-14 11:34:49,606 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54151eaa-2e0c-4a97-9c1a-c9212577c576/bin/utaipan-gh47qXpMRh/data/16177496f/1646dad63b3d44cd9ba4ba7d29a24f81 [2022-12-14 11:34:49,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:34:49,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:34:49,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:34:49,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:34:49,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:34:49,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:34:49" (1/1) ... [2022-12-14 11:34:49,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@792d8fe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:49, skipping insertion in model container [2022-12-14 11:34:49,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:34:49" (1/1) ... [2022-12-14 11:34:49,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:34:49,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:34:49,836 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_54151eaa-2e0c-4a97-9c1a-c9212577c576/sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i[30176,30189] [2022-12-14 11:34:49,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:34:49,868 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:34:49,892 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_54151eaa-2e0c-4a97-9c1a-c9212577c576/sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i[30176,30189] [2022-12-14 11:34:49,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:34:49,925 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:34:49,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:49 WrapperNode [2022-12-14 11:34:49,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:34:49,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:34:49,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:34:49,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:34:49,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:49" (1/1) ... [2022-12-14 11:34:49,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:49" (1/1) ... [2022-12-14 11:34:49,959 INFO L138 Inliner]: procedures = 171, calls = 47, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 143 [2022-12-14 11:34:49,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:34:49,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:34:49,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:34:49,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:34:49,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:49" (1/1) ... [2022-12-14 11:34:49,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:49" (1/1) ... [2022-12-14 11:34:49,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:49" (1/1) ... [2022-12-14 11:34:49,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:49" (1/1) ... [2022-12-14 11:34:49,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:49" (1/1) ... [2022-12-14 11:34:49,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:49" (1/1) ... [2022-12-14 11:34:49,982 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:49" (1/1) ... [2022-12-14 11:34:49,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:49" (1/1) ... [2022-12-14 11:34:49,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:34:49,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:34:49,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:34:49,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:34:49,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:49" (1/1) ... [2022-12-14 11:34:49,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:34:50,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54151eaa-2e0c-4a97-9c1a-c9212577c576/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:34:50,014 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54151eaa-2e0c-4a97-9c1a-c9212577c576/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:34:50,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54151eaa-2e0c-4a97-9c1a-c9212577c576/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:34:50,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 11:34:50,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 11:34:50,055 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-14 11:34:50,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:34:50,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 11:34:50,056 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-14 11:34:50,056 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-14 11:34:50,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 11:34:50,056 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2022-12-14 11:34:50,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:34:50,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:34:50,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:34:50,058 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 11:34:50,167 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:34:50,170 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:34:50,472 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:34:50,481 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:34:50,481 INFO L300 CfgBuilder]: Removed 23 assume(true) statements. [2022-12-14 11:34:50,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:34:50 BoogieIcfgContainer [2022-12-14 11:34:50,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:34:50,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:34:50,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:34:50,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:34:50,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:34:49" (1/3) ... [2022-12-14 11:34:50,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@723a90d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:34:50, skipping insertion in model container [2022-12-14 11:34:50,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:49" (2/3) ... [2022-12-14 11:34:50,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@723a90d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:34:50, skipping insertion in model container [2022-12-14 11:34:50,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:34:50" (3/3) ... [2022-12-14 11:34:50,493 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2022-12-14 11:34:50,501 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 11:34:50,510 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:34:50,510 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-12-14 11:34:50,511 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 11:34:50,569 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-14 11:34:50,594 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 11:34:50,604 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 216 places, 242 transitions, 492 flow [2022-12-14 11:34:50,607 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 216 places, 242 transitions, 492 flow [2022-12-14 11:34:50,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 242 transitions, 492 flow [2022-12-14 11:34:50,682 INFO L130 PetriNetUnfolder]: 45/350 cut-off events. [2022-12-14 11:34:50,682 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-14 11:34:50,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 350 events. 45/350 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1605 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 198. Up to 6 conditions per place. [2022-12-14 11:34:50,694 INFO L119 LiptonReduction]: Number of co-enabled transitions 19380 [2022-12-14 11:34:54,145 INFO L134 LiptonReduction]: Checked pairs total: 59824 [2022-12-14 11:34:54,145 INFO L136 LiptonReduction]: Total number of compositions: 218 [2022-12-14 11:34:54,151 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 80 places, 100 transitions, 208 flow [2022-12-14 11:34:54,204 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1479 states, 1402 states have (on average 2.6326676176890156) internal successors, (3691), 1478 states have internal predecessors, (3691), 0 states have call successors, (0), 0 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 11:34:54,219 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:34:54,224 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;@7d8e6e97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:34:54,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-12-14 11:34:54,228 INFO L276 IsEmpty]: Start isEmpty. Operand has 1479 states, 1402 states have (on average 2.6326676176890156) internal successors, (3691), 1478 states have internal predecessors, (3691), 0 states have call successors, (0), 0 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 11:34:54,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 11:34:54,232 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:34:54,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 11:34:54,233 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-12-14 11:34:54,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:34:54,237 INFO L85 PathProgramCache]: Analyzing trace with hash 890147240, now seen corresponding path program 1 times [2022-12-14 11:34:54,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:34:54,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084545940] [2022-12-14 11:34:54,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:34:54,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:34:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:34:54,407 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 11:34:54,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:34:54,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084545940] [2022-12-14 11:34:54,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084545940] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:34:54,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:34:54,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:34:54,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562319570] [2022-12-14 11:34:54,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:34:54,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:34:54,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:34:54,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:34:54,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:34:54,436 INFO L87 Difference]: Start difference. First operand has 1479 states, 1402 states have (on average 2.6326676176890156) internal successors, (3691), 1478 states have internal predecessors, (3691), 0 states have call successors, (0), 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 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 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 11:34:54,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:34:54,551 INFO L93 Difference]: Finished difference Result 1266 states and 2490 transitions. [2022-12-14 11:34:54,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:34:54,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-12-14 11:34:54,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:34:54,566 INFO L225 Difference]: With dead ends: 1266 [2022-12-14 11:34:54,567 INFO L226 Difference]: Without dead ends: 1245 [2022-12-14 11:34:54,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:34:54,569 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 36 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:34:54,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 52 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:34:54,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2022-12-14 11:34:54,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1245. [2022-12-14 11:34:54,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 1212 states have (on average 2.022277227722772) internal successors, (2451), 1244 states have internal predecessors, (2451), 0 states have call successors, (0), 0 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 11:34:54,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 2451 transitions. [2022-12-14 11:34:54,654 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 2451 transitions. Word has length 5 [2022-12-14 11:34:54,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:34:54,655 INFO L495 AbstractCegarLoop]: Abstraction has 1245 states and 2451 transitions. [2022-12-14 11:34:54,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 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 11:34:54,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 2451 transitions. [2022-12-14 11:34:54,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 11:34:54,655 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:34:54,656 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-12-14 11:34:54,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:34:54,656 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-12-14 11:34:54,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:34:54,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1812178575, now seen corresponding path program 1 times [2022-12-14 11:34:54,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:34:54,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517660146] [2022-12-14 11:34:54,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:34:54,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:34:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:34:54,684 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 11:34:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:34:54,721 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 11:34:54,721 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 11:34:54,723 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-12-14 11:34:54,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-12-14 11:34:54,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-12-14 11:34:54,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-12-14 11:34:54,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-12-14 11:34:54,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-12-14 11:34:54,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-12-14 11:34:54,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-12-14 11:34:54,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-12-14 11:34:54,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-12-14 11:34:54,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-12-14 11:34:54,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-12-14 11:34:54,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-12-14 11:34:54,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-12-14 11:34:54,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-12-14 11:34:54,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-12-14 11:34:54,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-12-14 11:34:54,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-12-14 11:34:54,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-12-14 11:34:54,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-12-14 11:34:54,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-12-14 11:34:54,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-12-14 11:34:54,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 11:34:54,731 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 11:34:54,733 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 11:34:54,733 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-14 11:34:54,757 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 11:34:54,761 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 11:34:54,762 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 292 places, 329 transitions, 676 flow [2022-12-14 11:34:54,762 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 292 places, 329 transitions, 676 flow [2022-12-14 11:34:54,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 329 transitions, 676 flow [2022-12-14 11:34:54,858 INFO L130 PetriNetUnfolder]: 76/576 cut-off events. [2022-12-14 11:34:54,858 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-14 11:34:54,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 590 conditions, 576 events. 76/576 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2955 event pairs, 0 based on Foata normal form. 0/464 useless extension candidates. Maximal degree in co-relation 352. Up to 9 conditions per place. [2022-12-14 11:34:54,882 INFO L119 LiptonReduction]: Number of co-enabled transitions 55080 [2022-12-14 11:34:59,537 INFO L134 LiptonReduction]: Checked pairs total: 268273 [2022-12-14 11:34:59,537 INFO L136 LiptonReduction]: Total number of compositions: 274 [2022-12-14 11:34:59,538 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 139 places, 169 transitions, 356 flow [2022-12-14 11:35:00,986 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 86094 states, 85369 states have (on average 3.678536705361431) internal successors, (314033), 86093 states have internal predecessors, (314033), 0 states have call successors, (0), 0 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 11:35:00,987 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:35:00,988 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;@7d8e6e97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:35:00,988 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2022-12-14 11:35:01,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 86094 states, 85369 states have (on average 3.678536705361431) internal successors, (314033), 86093 states have internal predecessors, (314033), 0 states have call successors, (0), 0 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 11:35:01,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 11:35:01,101 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:35:01,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 11:35:01,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-12-14 11:35:01,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:35:01,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1532751809, now seen corresponding path program 1 times [2022-12-14 11:35:01,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:35:01,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107894574] [2022-12-14 11:35:01,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:35:01,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:35:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:35:01,151 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 11:35:01,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:35:01,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107894574] [2022-12-14 11:35:01,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107894574] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:35:01,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:35:01,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:35:01,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657687724] [2022-12-14 11:35:01,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:35:01,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:35:01,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:35:01,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:35:01,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:35:01,241 INFO L87 Difference]: Start difference. First operand has 86094 states, 85369 states have (on average 3.678536705361431) internal successors, (314033), 86093 states have internal predecessors, (314033), 0 states have call successors, (0), 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 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 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 11:35:02,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:35:02,113 INFO L93 Difference]: Finished difference Result 83761 states and 245822 transitions. [2022-12-14 11:35:02,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:35:02,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-12-14 11:35:02,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:35:02,508 INFO L225 Difference]: With dead ends: 83761 [2022-12-14 11:35:02,508 INFO L226 Difference]: Without dead ends: 83664 [2022-12-14 11:35:02,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:35:02,509 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 49 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:35:02,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 136 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:35:02,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83664 states. [2022-12-14 11:35:04,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83664 to 83664. [2022-12-14 11:35:04,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83664 states, 83047 states have (on average 2.957048418365504) internal successors, (245574), 83663 states have internal predecessors, (245574), 0 states have call successors, (0), 0 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 11:35:04,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83664 states to 83664 states and 245574 transitions. [2022-12-14 11:35:04,697 INFO L78 Accepts]: Start accepts. Automaton has 83664 states and 245574 transitions. Word has length 5 [2022-12-14 11:35:04,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:35:04,697 INFO L495 AbstractCegarLoop]: Abstraction has 83664 states and 245574 transitions. [2022-12-14 11:35:04,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 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 11:35:04,698 INFO L276 IsEmpty]: Start isEmpty. Operand 83664 states and 245574 transitions. [2022-12-14 11:35:04,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 11:35:04,698 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:35:04,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:35:04,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 11:35:04,699 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-12-14 11:35:04,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:35:04,699 INFO L85 PathProgramCache]: Analyzing trace with hash 71873608, now seen corresponding path program 1 times [2022-12-14 11:35:04,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:35:04,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974813143] [2022-12-14 11:35:04,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:35:04,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:35:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:35:04,730 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 11:35:04,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:35:04,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974813143] [2022-12-14 11:35:04,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974813143] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:35:04,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:35:04,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:35:04,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260596486] [2022-12-14 11:35:04,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:35:04,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:35:04,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:35:04,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:35:04,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:35:04,732 INFO L87 Difference]: Start difference. First operand 83664 states and 245574 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 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 11:35:05,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:35:05,831 INFO L93 Difference]: Finished difference Result 142850 states and 413233 transitions. [2022-12-14 11:35:05,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:35:05,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-12-14 11:35:05,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:35:06,321 INFO L225 Difference]: With dead ends: 142850 [2022-12-14 11:35:06,321 INFO L226 Difference]: Without dead ends: 142718 [2022-12-14 11:35:06,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:35:06,322 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 116 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:35:06,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 142 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:35:06,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142718 states. [2022-12-14 11:35:08,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142718 to 92624. [2022-12-14 11:35:08,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92624 states, 92043 states have (on average 2.936909922536206) internal successors, (270322), 92623 states have internal predecessors, (270322), 0 states have call successors, (0), 0 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 11:35:08,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92624 states to 92624 states and 270322 transitions. [2022-12-14 11:35:08,850 INFO L78 Accepts]: Start accepts. Automaton has 92624 states and 270322 transitions. Word has length 8 [2022-12-14 11:35:08,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:35:08,851 INFO L495 AbstractCegarLoop]: Abstraction has 92624 states and 270322 transitions. [2022-12-14 11:35:08,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 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 11:35:08,851 INFO L276 IsEmpty]: Start isEmpty. Operand 92624 states and 270322 transitions. [2022-12-14 11:35:08,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 11:35:08,853 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:35:08,853 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 11:35:08,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 11:35:08,854 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-12-14 11:35:08,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:35:08,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1618433276, now seen corresponding path program 1 times [2022-12-14 11:35:08,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:35:08,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943458280] [2022-12-14 11:35:08,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:35:08,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:35:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:35:08,877 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 11:35:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:35:08,896 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 11:35:08,896 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 11:35:08,897 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 30 remaining) [2022-12-14 11:35:08,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (28 of 30 remaining) [2022-12-14 11:35:08,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (27 of 30 remaining) [2022-12-14 11:35:08,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (26 of 30 remaining) [2022-12-14 11:35:08,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (25 of 30 remaining) [2022-12-14 11:35:08,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (24 of 30 remaining) [2022-12-14 11:35:08,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (23 of 30 remaining) [2022-12-14 11:35:08,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (22 of 30 remaining) [2022-12-14 11:35:08,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (21 of 30 remaining) [2022-12-14 11:35:08,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (20 of 30 remaining) [2022-12-14 11:35:08,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (19 of 30 remaining) [2022-12-14 11:35:08,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (18 of 30 remaining) [2022-12-14 11:35:08,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (17 of 30 remaining) [2022-12-14 11:35:08,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (16 of 30 remaining) [2022-12-14 11:35:08,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 30 remaining) [2022-12-14 11:35:08,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 30 remaining) [2022-12-14 11:35:08,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (13 of 30 remaining) [2022-12-14 11:35:08,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (12 of 30 remaining) [2022-12-14 11:35:08,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 30 remaining) [2022-12-14 11:35:08,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 30 remaining) [2022-12-14 11:35:08,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (9 of 30 remaining) [2022-12-14 11:35:08,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (8 of 30 remaining) [2022-12-14 11:35:08,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 30 remaining) [2022-12-14 11:35:08,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 30 remaining) [2022-12-14 11:35:08,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 30 remaining) [2022-12-14 11:35:08,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (4 of 30 remaining) [2022-12-14 11:35:08,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 30 remaining) [2022-12-14 11:35:08,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 30 remaining) [2022-12-14 11:35:08,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (1 of 30 remaining) [2022-12-14 11:35:08,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (0 of 30 remaining) [2022-12-14 11:35:08,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 11:35:08,903 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-14 11:35:08,904 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 11:35:08,904 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-14 11:35:08,933 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-14 11:35:08,937 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 11:35:08,937 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 368 places, 416 transitions, 862 flow [2022-12-14 11:35:08,937 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 368 places, 416 transitions, 862 flow [2022-12-14 11:35:08,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 368 places, 416 transitions, 862 flow [2022-12-14 11:35:09,198 INFO L130 PetriNetUnfolder]: 112/847 cut-off events. [2022-12-14 11:35:09,198 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-14 11:35:09,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 847 events. 112/847 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4541 event pairs, 1 based on Foata normal form. 0/683 useless extension candidates. Maximal degree in co-relation 584. Up to 16 conditions per place. [2022-12-14 11:35:09,235 INFO L119 LiptonReduction]: Number of co-enabled transitions 105060 [2022-12-14 11:35:13,685 INFO L134 LiptonReduction]: Checked pairs total: 559362 [2022-12-14 11:35:13,685 INFO L136 LiptonReduction]: Total number of compositions: 340 [2022-12-14 11:35:13,686 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 188 places, 229 transitions, 488 flow