./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.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_eb12b11f-f24c-40de-b341-c01088e8d71e/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb12b11f-f24c-40de-b341-c01088e8d71e/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_eb12b11f-f24c-40de-b341-c01088e8d71e/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb12b11f-f24c-40de-b341-c01088e8d71e/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb12b11f-f24c-40de-b341-c01088e8d71e/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_eb12b11f-f24c-40de-b341-c01088e8d71e/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 246cd07a930f0cb8d777c2eae74f25d04e3267c275b813f0c0f5232c23299340 --- 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 13:35:44,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:35:44,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:35:44,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:35:44,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:35:44,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:35:44,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:35:44,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:35:44,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:35:44,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:35:44,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:35:44,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:35:44,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:35:44,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:35:44,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:35:44,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:35:44,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:35:44,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:35:44,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:35:44,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:35:44,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:35:44,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:35:44,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:35:44,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:35:44,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:35:44,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:35:44,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:35:44,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:35:44,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:35:44,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:35:44,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:35:44,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:35:44,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:35:44,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:35:44,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:35:44,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:35:44,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:35:44,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:35:44,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:35:44,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:35:44,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:35:44,958 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb12b11f-f24c-40de-b341-c01088e8d71e/bin/utaipan-gh47qXpMRh/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-12-14 13:35:44,971 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:35:44,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:35:44,972 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:35:44,976 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:35:44,977 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:35:44,977 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:35:44,977 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:35:44,977 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:35:44,978 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:35:44,978 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:35:44,978 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:35:44,978 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:35:44,978 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:35:44,978 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:35:44,978 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:35:44,979 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:35:44,979 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:35:44,979 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:35:44,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:35:44,980 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:35:44,980 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 13:35:44,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:35:44,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:35:44,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:35:44,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:35:44,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:35:44,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:35:44,981 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-14 13:35:44,981 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:35:44,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:35:44,981 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:35:44,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:35:44,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:35:44,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:35:44,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:35:44,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:35:44,983 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:35:44,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:35:44,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:35:44,983 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:35:44,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:35:44,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:35:44,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:35:44,984 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_eb12b11f-f24c-40de-b341-c01088e8d71e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb12b11f-f24c-40de-b341-c01088e8d71e/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 246cd07a930f0cb8d777c2eae74f25d04e3267c275b813f0c0f5232c23299340 [2022-12-14 13:35:45,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:35:45,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:35:45,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:35:45,170 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:35:45,170 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:35:45,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb12b11f-f24c-40de-b341-c01088e8d71e/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i [2022-12-14 13:35:47,687 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:35:47,894 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:35:47,895 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb12b11f-f24c-40de-b341-c01088e8d71e/sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i [2022-12-14 13:35:47,905 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb12b11f-f24c-40de-b341-c01088e8d71e/bin/utaipan-gh47qXpMRh/data/3e753b89e/79c1017c8828407bb5365ecf7044be41/FLAG3334e5a17 [2022-12-14 13:35:48,280 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb12b11f-f24c-40de-b341-c01088e8d71e/bin/utaipan-gh47qXpMRh/data/3e753b89e/79c1017c8828407bb5365ecf7044be41 [2022-12-14 13:35:48,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:35:48,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:35:48,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:35:48,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:35:48,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:35:48,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:35:48" (1/1) ... [2022-12-14 13:35:48,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be9144f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:48, skipping insertion in model container [2022-12-14 13:35:48,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:35:48" (1/1) ... [2022-12-14 13:35:48,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:35:48,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:35:48,622 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_eb12b11f-f24c-40de-b341-c01088e8d71e/sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i[47038,47051] [2022-12-14 13:35:48,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:35:48,654 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:35:48,678 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb12b11f-f24c-40de-b341-c01088e8d71e/sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i[47038,47051] [2022-12-14 13:35:48,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:35:48,720 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:35:48,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:48 WrapperNode [2022-12-14 13:35:48,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:35:48,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:35:48,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:35:48,721 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:35:48,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:48" (1/1) ... [2022-12-14 13:35:48,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:48" (1/1) ... [2022-12-14 13:35:48,761 INFO L138 Inliner]: procedures = 271, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 264 [2022-12-14 13:35:48,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:35:48,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:35:48,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:35:48,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:35:48,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:48" (1/1) ... [2022-12-14 13:35:48,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:48" (1/1) ... [2022-12-14 13:35:48,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:48" (1/1) ... [2022-12-14 13:35:48,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:48" (1/1) ... [2022-12-14 13:35:48,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:48" (1/1) ... [2022-12-14 13:35:48,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:48" (1/1) ... [2022-12-14 13:35:48,788 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:48" (1/1) ... [2022-12-14 13:35:48,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:48" (1/1) ... [2022-12-14 13:35:48,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:35:48,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:35:48,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:35:48,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:35:48,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:48" (1/1) ... [2022-12-14 13:35:48,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:35:48,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb12b11f-f24c-40de-b341-c01088e8d71e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:35:48,816 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb12b11f-f24c-40de-b341-c01088e8d71e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:35:48,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb12b11f-f24c-40de-b341-c01088e8d71e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:35:48,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 13:35:48,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 13:35:48,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 13:35:48,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 13:35:48,848 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-14 13:35:48,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:35:48,849 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-14 13:35:48,849 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-14 13:35:48,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:35:48,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:35:48,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:35:48,851 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 13:35:48,946 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:35:48,948 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:35:49,278 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:35:49,285 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:35:49,285 INFO L300 CfgBuilder]: Removed 22 assume(true) statements. [2022-12-14 13:35:49,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:35:49 BoogieIcfgContainer [2022-12-14 13:35:49,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:35:49,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:35:49,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:35:49,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:35:49,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:35:48" (1/3) ... [2022-12-14 13:35:49,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3adad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:35:49, skipping insertion in model container [2022-12-14 13:35:49,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:48" (2/3) ... [2022-12-14 13:35:49,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3adad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:35:49, skipping insertion in model container [2022-12-14 13:35:49,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:35:49" (3/3) ... [2022-12-14 13:35:49,294 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_78-equ_racing.i [2022-12-14 13:35:49,300 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 13:35:49,308 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:35:49,309 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-12-14 13:35:49,309 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 13:35:49,363 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-14 13:35:49,388 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 13:35:49,399 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 252 places, 278 transitions, 564 flow [2022-12-14 13:35:49,401 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 252 places, 278 transitions, 564 flow [2022-12-14 13:35:49,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 278 transitions, 564 flow [2022-12-14 13:35:49,485 INFO L130 PetriNetUnfolder]: 43/389 cut-off events. [2022-12-14 13:35:49,486 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-14 13:35:49,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 389 events. 43/389 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1573 event pairs, 0 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 207. Up to 8 conditions per place. [2022-12-14 13:35:49,500 INFO L119 LiptonReduction]: Number of co-enabled transitions 21294 [2022-12-14 13:35:57,025 INFO L134 LiptonReduction]: Checked pairs total: 192839 [2022-12-14 13:35:57,025 INFO L136 LiptonReduction]: Total number of compositions: 243 [2022-12-14 13:35:57,041 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 111 places, 134 transitions, 276 flow [2022-12-14 13:35:57,123 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2890 states, 2830 states have (on average 2.442402826855124) internal successors, (6912), 2889 states have internal predecessors, (6912), 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 13:35:57,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:35:57,144 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;@39b4837b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:35:57,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-14 13:35:57,151 INFO L276 IsEmpty]: Start isEmpty. Operand has 2890 states, 2830 states have (on average 2.442402826855124) internal successors, (6912), 2889 states have internal predecessors, (6912), 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 13:35:57,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 13:35:57,156 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:35:57,156 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-12-14 13:35:57,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-12-14 13:35:57,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:35:57,162 INFO L85 PathProgramCache]: Analyzing trace with hash -673214953, now seen corresponding path program 1 times [2022-12-14 13:35:57,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:35:57,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927848609] [2022-12-14 13:35:57,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:35:57,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:35:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:35:57,282 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 13:35:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:35:57,334 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 13:35:57,336 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 13:35:57,337 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-12-14 13:35:57,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-12-14 13:35:57,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-12-14 13:35:57,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-12-14 13:35:57,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-12-14 13:35:57,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-12-14 13:35:57,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-12-14 13:35:57,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-12-14 13:35:57,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-12-14 13:35:57,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-12-14 13:35:57,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-12-14 13:35:57,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-12-14 13:35:57,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-12-14 13:35:57,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-12-14 13:35:57,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-12-14 13:35:57,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-12-14 13:35:57,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-12-14 13:35:57,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:35:57,343 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 13:35:57,346 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 13:35:57,346 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-14 13:35:57,380 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 13:35:57,385 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 13:35:57,386 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 334 places, 371 transitions, 760 flow [2022-12-14 13:35:57,386 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 334 places, 371 transitions, 760 flow [2022-12-14 13:35:57,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 371 transitions, 760 flow [2022-12-14 13:35:57,474 INFO L130 PetriNetUnfolder]: 72/624 cut-off events. [2022-12-14 13:35:57,474 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-14 13:35:57,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 624 events. 72/624 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3072 event pairs, 0 based on Foata normal form. 0/519 useless extension candidates. Maximal degree in co-relation 391. Up to 12 conditions per place. [2022-12-14 13:35:57,517 INFO L119 LiptonReduction]: Number of co-enabled transitions 61152 [2022-12-14 13:36:07,808 INFO L134 LiptonReduction]: Checked pairs total: 588595 [2022-12-14 13:36:07,808 INFO L136 LiptonReduction]: Total number of compositions: 314 [2022-12-14 13:36:07,809 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 161 places, 194 transitions, 406 flow [2022-12-14 13:36:10,073 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 135983 states, 135599 states have (on average 3.6089646678810317) internal successors, (489372), 135982 states have internal predecessors, (489372), 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 13:36:10,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:36:10,075 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;@39b4837b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:36:10,075 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-12-14 13:36:10,244 INFO L276 IsEmpty]: Start isEmpty. Operand has 135983 states, 135599 states have (on average 3.6089646678810317) internal successors, (489372), 135982 states have internal predecessors, (489372), 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 13:36:10,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 13:36:10,247 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:36:10,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:36:10,247 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-12-14 13:36:10,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:36:10,248 INFO L85 PathProgramCache]: Analyzing trace with hash 2117273624, now seen corresponding path program 1 times [2022-12-14 13:36:10,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:36:10,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892701447] [2022-12-14 13:36:10,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:36:10,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:36:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:36:10,312 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 13:36:10,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:36:10,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892701447] [2022-12-14 13:36:10,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892701447] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:36:10,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:36:10,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:36:10,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885846350] [2022-12-14 13:36:10,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:36:10,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 13:36:10,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:36:10,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 13:36:10,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 13:36:10,475 INFO L87 Difference]: Start difference. First operand has 135983 states, 135599 states have (on average 3.6089646678810317) internal successors, (489372), 135982 states have internal predecessors, (489372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 13:36:11,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:36:11,699 INFO L93 Difference]: Finished difference Result 135983 states and 404544 transitions. [2022-12-14 13:36:11,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 13:36:11,702 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-12-14 13:36:11,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:36:12,324 INFO L225 Difference]: With dead ends: 135983 [2022-12-14 13:36:12,324 INFO L226 Difference]: Without dead ends: 135947 [2022-12-14 13:36:12,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 13:36:12,327 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:36:12,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:36:12,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135947 states. [2022-12-14 13:36:15,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135947 to 135947. [2022-12-14 13:36:15,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135947 states, 135567 states have (on average 2.983292394166722) internal successors, (404436), 135946 states have internal predecessors, (404436), 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 13:36:15,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135947 states to 135947 states and 404436 transitions. [2022-12-14 13:36:15,959 INFO L78 Accepts]: Start accepts. Automaton has 135947 states and 404436 transitions. Word has length 9 [2022-12-14 13:36:15,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:36:15,959 INFO L495 AbstractCegarLoop]: Abstraction has 135947 states and 404436 transitions. [2022-12-14 13:36:15,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 13:36:15,960 INFO L276 IsEmpty]: Start isEmpty. Operand 135947 states and 404436 transitions. [2022-12-14 13:36:15,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 13:36:15,961 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:36:15,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:36:15,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 13:36:15,961 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-12-14 13:36:15,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:36:15,962 INFO L85 PathProgramCache]: Analyzing trace with hash -941432516, now seen corresponding path program 1 times [2022-12-14 13:36:15,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:36:15,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384215889] [2022-12-14 13:36:15,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:36:15,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:36:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:36:16,227 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 13:36:16,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:36:16,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384215889] [2022-12-14 13:36:16,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384215889] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:36:16,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:36:16,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 13:36:16,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12310488] [2022-12-14 13:36:16,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:36:16,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 13:36:16,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:36:16,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 13:36:16,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:36:16,230 INFO L87 Difference]: Start difference. First operand 135947 states and 404436 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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 13:36:18,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:36:18,204 INFO L93 Difference]: Finished difference Result 189072 states and 559177 transitions. [2022-12-14 13:36:18,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 13:36:18,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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 10 [2022-12-14 13:36:18,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:36:18,959 INFO L225 Difference]: With dead ends: 189072 [2022-12-14 13:36:18,959 INFO L226 Difference]: Without dead ends: 189072 [2022-12-14 13:36:18,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:36:18,960 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 232 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 1629 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:36:18,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 261 Invalid, 1742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1629 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 13:36:19,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189072 states. [2022-12-14 13:36:22,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189072 to 155426. [2022-12-14 13:36:22,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155426 states, 155067 states have (on average 2.9791638453055778) internal successors, (461970), 155425 states have internal predecessors, (461970), 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 13:36:22,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155426 states to 155426 states and 461970 transitions. [2022-12-14 13:36:22,835 INFO L78 Accepts]: Start accepts. Automaton has 155426 states and 461970 transitions. Word has length 10 [2022-12-14 13:36:22,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:36:22,835 INFO L495 AbstractCegarLoop]: Abstraction has 155426 states and 461970 transitions. [2022-12-14 13:36:22,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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 13:36:22,836 INFO L276 IsEmpty]: Start isEmpty. Operand 155426 states and 461970 transitions. [2022-12-14 13:36:22,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 13:36:22,837 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:36:22,837 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 13:36:22,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 13:36:22,838 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-12-14 13:36:22,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:36:22,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1412570554, now seen corresponding path program 1 times [2022-12-14 13:36:22,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:36:22,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083814001] [2022-12-14 13:36:22,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:36:22,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:36:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:36:22,857 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 13:36:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:36:22,876 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 13:36:22,876 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 13:36:22,877 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-12-14 13:36:22,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-12-14 13:36:22,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-12-14 13:36:22,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-12-14 13:36:22,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-12-14 13:36:22,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-12-14 13:36:22,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-12-14 13:36:22,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-12-14 13:36:22,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-12-14 13:36:22,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-12-14 13:36:22,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-12-14 13:36:22,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-12-14 13:36:22,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-12-14 13:36:22,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-12-14 13:36:22,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-12-14 13:36:22,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-12-14 13:36:22,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-12-14 13:36:22,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-12-14 13:36:22,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-12-14 13:36:22,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-12-14 13:36:22,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-12-14 13:36:22,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-12-14 13:36:22,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 13:36:22,881 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-14 13:36:22,881 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 13:36:22,881 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-14 13:36:22,914 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-14 13:36:22,918 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 13:36:22,918 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 416 places, 464 transitions, 958 flow [2022-12-14 13:36:22,919 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 416 places, 464 transitions, 958 flow [2022-12-14 13:36:22,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 416 places, 464 transitions, 958 flow [2022-12-14 13:36:23,125 INFO L130 PetriNetUnfolder]: 106/904 cut-off events. [2022-12-14 13:36:23,126 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-14 13:36:23,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 932 conditions, 904 events. 106/904 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4893 event pairs, 1 based on Foata normal form. 0/751 useless extension candidates. Maximal degree in co-relation 632. Up to 16 conditions per place. [2022-12-14 13:36:23,193 INFO L119 LiptonReduction]: Number of co-enabled transitions 117390 [2022-12-14 13:36:35,856 INFO L134 LiptonReduction]: Checked pairs total: 1083683 [2022-12-14 13:36:35,856 INFO L136 LiptonReduction]: Total number of compositions: 400 [2022-12-14 13:36:35,858 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 210 places, 252 transitions, 534 flow