./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981b1b5-ecc1-4f47-85fe-51d7d70b9596/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981b1b5-ecc1-4f47-85fe-51d7d70b9596/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981b1b5-ecc1-4f47-85fe-51d7d70b9596/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981b1b5-ecc1-4f47-85fe-51d7d70b9596/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981b1b5-ecc1-4f47-85fe-51d7d70b9596/bin/utaipan-ByfvJB40ur/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981b1b5-ecc1-4f47-85fe-51d7d70b9596/bin/utaipan-ByfvJB40ur --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 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 --- 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-38b53e6 [2022-11-26 00:51:57,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:51:57,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:51:57,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:51:57,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:51:57,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:51:57,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:51:57,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:51:57,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:51:57,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:51:57,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:51:57,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:51:57,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:51:57,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:51:57,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:51:57,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:51:57,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:51:57,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:51:57,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:51:57,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:51:57,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:51:57,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:51:57,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:51:57,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:51:57,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:51:57,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:51:57,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:51:57,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:51:57,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:51:57,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:51:57,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:51:57,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:51:57,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:51:57,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:51:57,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:51:57,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:51:57,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:51:57,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:51:57,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:51:57,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:51:57,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:51:57,875 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981b1b5-ecc1-4f47-85fe-51d7d70b9596/bin/utaipan-ByfvJB40ur/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-26 00:51:57,919 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:51:57,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:51:57,920 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:51:57,920 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:51:57,921 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:51:57,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:51:57,922 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:51:57,922 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:51:57,923 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:51:57,923 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:51:57,924 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:51:57,925 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:51:57,925 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:51:57,925 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:51:57,926 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:51:57,926 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:51:57,926 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:51:57,927 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:51:57,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:51:57,928 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:51:57,928 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:51:57,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:51:57,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:51:57,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:51:57,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:51:57,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:51:57,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:51:57,931 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-26 00:51:57,931 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:51:57,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:51:57,932 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:51:57,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:51:57,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:51:57,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:51:57,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:51:57,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:51:57,934 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:51:57,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:51:57,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:51:57,935 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:51:57,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:51:57,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:51:57,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:51:57,936 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_5981b1b5-ecc1-4f47-85fe-51d7d70b9596/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981b1b5-ecc1-4f47-85fe-51d7d70b9596/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 [2022-11-26 00:51:58,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:51:58,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:51:58,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:51:58,298 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:51:58,299 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:51:58,300 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981b1b5-ecc1-4f47-85fe-51d7d70b9596/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2022-11-26 00:52:01,422 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:52:01,749 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:52:01,750 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981b1b5-ecc1-4f47-85fe-51d7d70b9596/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2022-11-26 00:52:01,764 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981b1b5-ecc1-4f47-85fe-51d7d70b9596/bin/utaipan-ByfvJB40ur/data/dd9f4dc64/f6498448829349479a95fbd28cd72444/FLAGcb292252a [2022-11-26 00:52:01,780 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981b1b5-ecc1-4f47-85fe-51d7d70b9596/bin/utaipan-ByfvJB40ur/data/dd9f4dc64/f6498448829349479a95fbd28cd72444 [2022-11-26 00:52:01,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:52:01,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:52:01,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:52:01,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:52:01,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:52:01,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:52:01" (1/1) ... [2022-11-26 00:52:01,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dfeca5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:52:01, skipping insertion in model container [2022-11-26 00:52:01,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:52:01" (1/1) ... [2022-11-26 00:52:01,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:52:01,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:52:02,269 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_5981b1b5-ecc1-4f47-85fe-51d7d70b9596/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2022-11-26 00:52:02,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:52:02,324 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:52:02,383 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_5981b1b5-ecc1-4f47-85fe-51d7d70b9596/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2022-11-26 00:52:02,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:52:02,452 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:52:02,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:52:02 WrapperNode [2022-11-26 00:52:02,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:52:02,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:52:02,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:52:02,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:52:02,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:52:02" (1/1) ... [2022-11-26 00:52:02,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:52:02" (1/1) ... [2022-11-26 00:52:02,516 INFO L138 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 115 [2022-11-26 00:52:02,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:52:02,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:52:02,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:52:02,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:52:02,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:52:02" (1/1) ... [2022-11-26 00:52:02,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:52:02" (1/1) ... [2022-11-26 00:52:02,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:52:02" (1/1) ... [2022-11-26 00:52:02,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:52:02" (1/1) ... [2022-11-26 00:52:02,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:52:02" (1/1) ... [2022-11-26 00:52:02,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:52:02" (1/1) ... [2022-11-26 00:52:02,583 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:52:02" (1/1) ... [2022-11-26 00:52:02,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:52:02" (1/1) ... [2022-11-26 00:52:02,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:52:02,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:52:02,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:52:02,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:52:02,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:52:02" (1/1) ... [2022-11-26 00:52:02,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:52:02,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981b1b5-ecc1-4f47-85fe-51d7d70b9596/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:52:02,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981b1b5-ecc1-4f47-85fe-51d7d70b9596/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:52:02,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5981b1b5-ecc1-4f47-85fe-51d7d70b9596/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:52:02,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:52:02,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:52:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-26 00:52:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:52:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:52:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-26 00:52:02,671 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-26 00:52:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:52:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:52:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:52:02,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:52:02,674 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-26 00:52:02,874 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:52:02,876 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:52:03,201 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:52:03,226 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:52:03,227 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-26 00:52:03,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:52:03 BoogieIcfgContainer [2022-11-26 00:52:03,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:52:03,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:52:03,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:52:03,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:52:03,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:52:01" (1/3) ... [2022-11-26 00:52:03,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a376b37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:52:03, skipping insertion in model container [2022-11-26 00:52:03,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:52:02" (2/3) ... [2022-11-26 00:52:03,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a376b37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:52:03, skipping insertion in model container [2022-11-26 00:52:03,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:52:03" (3/3) ... [2022-11-26 00:52:03,249 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2022-11-26 00:52:03,258 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-26 00:52:03,269 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:52:03,270 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-26 00:52:03,270 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-26 00:52:03,389 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-26 00:52:03,436 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 00:52:03,512 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 173 transitions, 354 flow [2022-11-26 00:52:03,518 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 173 transitions, 354 flow [2022-11-26 00:52:03,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 173 transitions, 354 flow [2022-11-26 00:52:03,661 INFO L130 PetriNetUnfolder]: 30/255 cut-off events. [2022-11-26 00:52:03,661 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-26 00:52:03,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 255 events. 30/255 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1024 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 137. Up to 6 conditions per place. [2022-11-26 00:52:03,678 INFO L119 LiptonReduction]: Number of co-enabled transitions 8800 [2022-11-26 00:52:07,954 INFO L134 LiptonReduction]: Checked pairs total: 48009 [2022-11-26 00:52:07,954 INFO L136 LiptonReduction]: Total number of compositions: 143 [2022-11-26 00:52:07,962 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 84 transitions, 176 flow [2022-11-26 00:52:08,031 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1146 states, 1086 states have (on average 2.483425414364641) internal successors, (2697), 1145 states have internal predecessors, (2697), 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) [2022-11-26 00:52:08,054 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:52:08,060 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;@45c70340, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:52:08,060 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-26 00:52:08,065 INFO L276 IsEmpty]: Start isEmpty. Operand has 1146 states, 1086 states have (on average 2.483425414364641) internal successors, (2697), 1145 states have internal predecessors, (2697), 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) [2022-11-26 00:52:08,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:52:08,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:52:08,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:52:08,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-26 00:52:08,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:52:08,081 INFO L85 PathProgramCache]: Analyzing trace with hash 600977559, now seen corresponding path program 1 times [2022-11-26 00:52:08,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:52:08,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942672480] [2022-11-26 00:52:08,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:52:08,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:52:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:52:08,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:52:08,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:52:08,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942672480] [2022-11-26 00:52:08,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942672480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:52:08,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:52:08,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:52:08,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196564153] [2022-11-26 00:52:08,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:52:08,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:52:08,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:52:08,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:52:08,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:52:08,350 INFO L87 Difference]: Start difference. First operand has 1146 states, 1086 states have (on average 2.483425414364641) internal successors, (2697), 1145 states have internal predecessors, (2697), 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) [2022-11-26 00:52:08,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:52:08,545 INFO L93 Difference]: Finished difference Result 1086 states and 2136 transitions. [2022-11-26 00:52:08,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:52:08,548 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 [2022-11-26 00:52:08,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:52:08,576 INFO L225 Difference]: With dead ends: 1086 [2022-11-26 00:52:08,576 INFO L226 Difference]: Without dead ends: 1059 [2022-11-26 00:52:08,577 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 [2022-11-26 00:52:08,583 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 32 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:52:08,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 70 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:52:08,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2022-11-26 00:52:08,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1059. [2022-11-26 00:52:08,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1013 states have (on average 2.052319842053307) internal successors, (2079), 1058 states have internal predecessors, (2079), 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) [2022-11-26 00:52:08,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2079 transitions. [2022-11-26 00:52:08,706 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2079 transitions. Word has length 5 [2022-11-26 00:52:08,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:52:08,707 INFO L495 AbstractCegarLoop]: Abstraction has 1059 states and 2079 transitions. [2022-11-26 00:52:08,708 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) [2022-11-26 00:52:08,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2079 transitions. [2022-11-26 00:52:08,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 00:52:08,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:52:08,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-26 00:52:08,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:52:08,709 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-26 00:52:08,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:52:08,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1470443218, now seen corresponding path program 1 times [2022-11-26 00:52:08,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:52:08,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788998843] [2022-11-26 00:52:08,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:52:08,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:52:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:52:08,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:52:08,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:52:08,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788998843] [2022-11-26 00:52:08,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788998843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:52:08,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:52:08,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:52:08,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330486477] [2022-11-26 00:52:08,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:52:08,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:52:08,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:52:08,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:52:08,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:52:08,823 INFO L87 Difference]: Start difference. First operand 1059 states and 2079 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-26 00:52:08,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:52:08,988 INFO L93 Difference]: Finished difference Result 1293 states and 2467 transitions. [2022-11-26 00:52:08,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:52:08,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-11-26 00:52:08,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:52:08,996 INFO L225 Difference]: With dead ends: 1293 [2022-11-26 00:52:08,997 INFO L226 Difference]: Without dead ends: 1265 [2022-11-26 00:52:08,998 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 [2022-11-26 00:52:08,999 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 49 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:52:09,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 50 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:52:09,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2022-11-26 00:52:09,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1021. [2022-11-26 00:52:09,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 987 states have (on average 1.9696048632218845) internal successors, (1944), 1020 states have internal predecessors, (1944), 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) [2022-11-26 00:52:09,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1944 transitions. [2022-11-26 00:52:09,040 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1944 transitions. Word has length 6 [2022-11-26 00:52:09,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:52:09,041 INFO L495 AbstractCegarLoop]: Abstraction has 1021 states and 1944 transitions. [2022-11-26 00:52:09,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-26 00:52:09,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1944 transitions. [2022-11-26 00:52:09,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 00:52:09,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:52:09,045 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-26 00:52:09,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:52:09,046 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-26 00:52:09,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:52:09,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1470490787, now seen corresponding path program 1 times [2022-11-26 00:52:09,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:52:09,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337267648] [2022-11-26 00:52:09,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:52:09,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:52:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:52:09,097 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:52:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:52:09,153 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:52:09,154 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:52:09,155 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-26 00:52:09,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-11-26 00:52:09,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-11-26 00:52:09,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-11-26 00:52:09,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-11-26 00:52:09,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-11-26 00:52:09,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-11-26 00:52:09,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-11-26 00:52:09,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-11-26 00:52:09,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-11-26 00:52:09,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-11-26 00:52:09,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-11-26 00:52:09,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-11-26 00:52:09,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-11-26 00:52:09,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-11-26 00:52:09,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-11-26 00:52:09,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-11-26 00:52:09,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:52:09,167 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-26 00:52:09,169 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-26 00:52:09,169 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-26 00:52:09,213 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-26 00:52:09,223 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 00:52:09,223 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 225 transitions, 468 flow [2022-11-26 00:52:09,224 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 225 transitions, 468 flow [2022-11-26 00:52:09,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 225 transitions, 468 flow [2022-11-26 00:52:09,348 INFO L130 PetriNetUnfolder]: 51/420 cut-off events. [2022-11-26 00:52:09,350 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-26 00:52:09,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 420 events. 51/420 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1889 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 257. Up to 9 conditions per place. [2022-11-26 00:52:09,376 INFO L119 LiptonReduction]: Number of co-enabled transitions 23700 [2022-11-26 00:52:14,701 INFO L134 LiptonReduction]: Checked pairs total: 141803 [2022-11-26 00:52:14,701 INFO L136 LiptonReduction]: Total number of compositions: 175 [2022-11-26 00:52:14,702 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 105 places, 124 transitions, 266 flow [2022-11-26 00:52:16,240 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 35587 states, 35203 states have (on average 3.575462318552396) internal successors, (125867), 35586 states have internal predecessors, (125867), 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) [2022-11-26 00:52:16,241 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:52:16,248 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;@45c70340, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:52:16,248 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-26 00:52:16,306 INFO L276 IsEmpty]: Start isEmpty. Operand has 35587 states, 35203 states have (on average 3.575462318552396) internal successors, (125867), 35586 states have internal predecessors, (125867), 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) [2022-11-26 00:52:16,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:52:16,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:52:16,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:52:16,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-26 00:52:16,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:52:16,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1032702437, now seen corresponding path program 1 times [2022-11-26 00:52:16,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:52:16,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408115970] [2022-11-26 00:52:16,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:52:16,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:52:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:52:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:52:16,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:52:16,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408115970] [2022-11-26 00:52:16,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408115970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:52:16,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:52:16,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:52:16,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576850719] [2022-11-26 00:52:16,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:52:16,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:52:16,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:52:16,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:52:16,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:52:16,562 INFO L87 Difference]: Start difference. First operand has 35587 states, 35203 states have (on average 3.575462318552396) internal successors, (125867), 35586 states have internal predecessors, (125867), 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) [2022-11-26 00:52:17,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:52:17,409 INFO L93 Difference]: Finished difference Result 34597 states and 101618 transitions. [2022-11-26 00:52:17,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:52:17,410 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 [2022-11-26 00:52:17,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:52:17,610 INFO L225 Difference]: With dead ends: 34597 [2022-11-26 00:52:17,611 INFO L226 Difference]: Without dead ends: 34445 [2022-11-26 00:52:17,611 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 [2022-11-26 00:52:17,612 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 33 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:52:17,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 114 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:52:17,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34445 states. [2022-11-26 00:52:18,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34445 to 34445. [2022-11-26 00:52:19,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34445 states, 34119 states have (on average 2.9647996717371554) internal successors, (101156), 34444 states have internal predecessors, (101156), 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) [2022-11-26 00:52:19,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34445 states to 34445 states and 101156 transitions. [2022-11-26 00:52:19,434 INFO L78 Accepts]: Start accepts. Automaton has 34445 states and 101156 transitions. Word has length 5 [2022-11-26 00:52:19,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:52:19,434 INFO L495 AbstractCegarLoop]: Abstraction has 34445 states and 101156 transitions. [2022-11-26 00:52:19,435 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) [2022-11-26 00:52:19,435 INFO L276 IsEmpty]: Start isEmpty. Operand 34445 states and 101156 transitions. [2022-11-26 00:52:19,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 00:52:19,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:52:19,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-26 00:52:19,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:52:19,440 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-26 00:52:19,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:52:19,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1972880073, now seen corresponding path program 1 times [2022-11-26 00:52:19,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:52:19,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788734302] [2022-11-26 00:52:19,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:52:19,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:52:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:52:19,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:52:19,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:52:19,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788734302] [2022-11-26 00:52:19,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788734302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:52:19,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:52:19,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:52:19,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158390003] [2022-11-26 00:52:19,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:52:19,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:52:19,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:52:19,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:52:19,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:52:19,503 INFO L87 Difference]: Start difference. First operand 34445 states and 101156 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-26 00:52:20,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:52:20,509 INFO L93 Difference]: Finished difference Result 51801 states and 145957 transitions. [2022-11-26 00:52:20,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:52:20,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-11-26 00:52:20,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:52:20,847 INFO L225 Difference]: With dead ends: 51801 [2022-11-26 00:52:20,847 INFO L226 Difference]: Without dead ends: 51645 [2022-11-26 00:52:20,847 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 [2022-11-26 00:52:20,848 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 77 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:52:20,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 83 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:52:21,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51645 states. [2022-11-26 00:52:22,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51645 to 37306. [2022-11-26 00:52:22,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37306 states, 37025 states have (on average 2.8759756920999324) internal successors, (106483), 37305 states have internal predecessors, (106483), 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) [2022-11-26 00:52:22,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37306 states to 37306 states and 106483 transitions. [2022-11-26 00:52:22,665 INFO L78 Accepts]: Start accepts. Automaton has 37306 states and 106483 transitions. Word has length 6 [2022-11-26 00:52:22,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:52:22,665 INFO L495 AbstractCegarLoop]: Abstraction has 37306 states and 106483 transitions. [2022-11-26 00:52:22,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-26 00:52:22,666 INFO L276 IsEmpty]: Start isEmpty. Operand 37306 states and 106483 transitions. [2022-11-26 00:52:22,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:52:22,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:52:22,668 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-26 00:52:22,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:52:22,669 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-26 00:52:22,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:52:22,669 INFO L85 PathProgramCache]: Analyzing trace with hash -740926215, now seen corresponding path program 1 times [2022-11-26 00:52:22,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:52:22,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495718067] [2022-11-26 00:52:22,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:52:22,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:52:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:52:22,696 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:52:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:52:22,711 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:52:22,711 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:52:22,711 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-26 00:52:22,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-11-26 00:52:22,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-11-26 00:52:22,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-11-26 00:52:22,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-11-26 00:52:22,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-11-26 00:52:22,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-11-26 00:52:22,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-11-26 00:52:22,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-11-26 00:52:22,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-11-26 00:52:22,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-11-26 00:52:22,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-11-26 00:52:22,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-11-26 00:52:22,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-11-26 00:52:22,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-11-26 00:52:22,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-11-26 00:52:22,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-11-26 00:52:22,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-11-26 00:52:22,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-11-26 00:52:22,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-11-26 00:52:22,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-11-26 00:52:22,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-11-26 00:52:22,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:52:22,717 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-26 00:52:22,718 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-26 00:52:22,718 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-26 00:52:22,747 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-26 00:52:22,751 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 00:52:22,751 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 249 places, 277 transitions, 584 flow [2022-11-26 00:52:22,752 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 249 places, 277 transitions, 584 flow [2022-11-26 00:52:22,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 277 transitions, 584 flow [2022-11-26 00:52:22,886 INFO L130 PetriNetUnfolder]: 77/630 cut-off events. [2022-11-26 00:52:22,887 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-26 00:52:22,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 630 events. 77/630 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3001 event pairs, 1 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 428. Up to 16 conditions per place. [2022-11-26 00:52:22,929 INFO L119 LiptonReduction]: Number of co-enabled transitions 43500 [2022-11-26 00:52:30,057 INFO L134 LiptonReduction]: Checked pairs total: 280241 [2022-11-26 00:52:30,058 INFO L136 LiptonReduction]: Total number of compositions: 212 [2022-11-26 00:52:30,059 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 137 places, 162 transitions, 354 flow