./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4e7fbc69 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_d62c28ed-050f-4907-8438-14574ac50a03/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c28ed-050f-4907-8438-14574ac50a03/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c28ed-050f-4907-8438-14574ac50a03/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c28ed-050f-4907-8438-14574ac50a03/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c28ed-050f-4907-8438-14574ac50a03/bin/utaipan-Q6hlc19bkW/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c28ed-050f-4907-8438-14574ac50a03/bin/utaipan-Q6hlc19bkW --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 963fe2b49296fadf7c892a862a5472be95dcc4e457bf5d1be114d7bd124d5424 --- 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-4e7fbc6 [2022-11-23 14:39:31,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:39:31,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:39:31,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:39:31,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:39:31,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:39:31,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:39:31,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:39:31,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:39:31,784 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:39:31,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:39:31,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:39:31,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:39:31,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:39:31,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:39:31,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:39:31,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:39:31,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:39:31,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:39:31,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:39:31,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:39:31,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:39:31,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:39:31,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:39:31,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:39:31,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:39:31,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:39:31,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:39:31,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:39:31,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:39:31,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:39:31,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:39:31,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:39:31,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:39:31,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:39:31,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:39:31,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:39:31,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:39:31,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:39:31,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:39:31,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:39:31,844 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c28ed-050f-4907-8438-14574ac50a03/bin/utaipan-Q6hlc19bkW/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-23 14:39:31,895 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:39:31,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:39:31,896 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:39:31,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:39:31,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:39:31,897 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:39:31,897 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:39:31,898 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:39:31,898 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:39:31,898 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:39:31,899 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:39:31,899 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:39:31,900 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:39:31,900 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:39:31,900 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:39:31,900 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:39:31,900 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:39:31,901 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:39:31,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:39:31,902 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:39:31,902 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:39:31,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:39:31,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:39:31,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:39:31,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:39:31,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:39:31,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:39:31,904 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-23 14:39:31,904 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:39:31,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:39:31,904 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:39:31,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:39:31,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:39:31,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:39:31,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:39:31,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:39:31,906 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:39:31,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:39:31,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:39:31,906 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:39:31,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:39:31,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:39:31,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:39:31,907 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_d62c28ed-050f-4907-8438-14574ac50a03/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c28ed-050f-4907-8438-14574ac50a03/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 963fe2b49296fadf7c892a862a5472be95dcc4e457bf5d1be114d7bd124d5424 [2022-11-23 14:39:32,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:39:32,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:39:32,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:39:32,245 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:39:32,245 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:39:32,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c28ed-050f-4907-8438-14574ac50a03/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i [2022-11-23 14:39:35,462 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:39:35,694 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:39:35,695 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c28ed-050f-4907-8438-14574ac50a03/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i [2022-11-23 14:39:35,707 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c28ed-050f-4907-8438-14574ac50a03/bin/utaipan-Q6hlc19bkW/data/e4e685859/f1214cf6bd6243dcb5ccc93cf8092088/FLAG32f73e7a7 [2022-11-23 14:39:35,722 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c28ed-050f-4907-8438-14574ac50a03/bin/utaipan-Q6hlc19bkW/data/e4e685859/f1214cf6bd6243dcb5ccc93cf8092088 [2022-11-23 14:39:35,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:39:35,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:39:35,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:39:35,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:39:35,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:39:35,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:39:35" (1/1) ... [2022-11-23 14:39:35,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@373e18c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:35, skipping insertion in model container [2022-11-23 14:39:35,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:39:35" (1/1) ... [2022-11-23 14:39:35,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:39:35,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:39:36,145 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_d62c28ed-050f-4907-8438-14574ac50a03/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i[30403,30416] [2022-11-23 14:39:36,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:39:36,169 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:39:36,224 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_d62c28ed-050f-4907-8438-14574ac50a03/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i[30403,30416] [2022-11-23 14:39:36,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:39:36,277 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:39:36,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:36 WrapperNode [2022-11-23 14:39:36,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:39:36,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:39:36,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:39:36,279 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:39:36,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:36" (1/1) ... [2022-11-23 14:39:36,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:36" (1/1) ... [2022-11-23 14:39:36,353 INFO L138 Inliner]: procedures = 172, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 91 [2022-11-23 14:39:36,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:39:36,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:39:36,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:39:36,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:39:36,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:36" (1/1) ... [2022-11-23 14:39:36,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:36" (1/1) ... [2022-11-23 14:39:36,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:36" (1/1) ... [2022-11-23 14:39:36,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:36" (1/1) ... [2022-11-23 14:39:36,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:36" (1/1) ... [2022-11-23 14:39:36,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:36" (1/1) ... [2022-11-23 14:39:36,401 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:36" (1/1) ... [2022-11-23 14:39:36,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:36" (1/1) ... [2022-11-23 14:39:36,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:39:36,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:39:36,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:39:36,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:39:36,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:36" (1/1) ... [2022-11-23 14:39:36,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:39:36,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c28ed-050f-4907-8438-14574ac50a03/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:39:36,449 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c28ed-050f-4907-8438-14574ac50a03/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:39:36,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c28ed-050f-4907-8438-14574ac50a03/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:39:36,498 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-23 14:39:36,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-23 14:39:36,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:39:36,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:39:36,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:39:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:39:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:39:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:39:36,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:39:36,501 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 14:39:36,740 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:39:36,742 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:39:37,003 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:39:37,108 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:39:37,112 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 14:39:37,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:39:37 BoogieIcfgContainer [2022-11-23 14:39:37,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:39:37,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:39:37,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:39:37,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:39:37,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:39:35" (1/3) ... [2022-11-23 14:39:37,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22965407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:39:37, skipping insertion in model container [2022-11-23 14:39:37,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:36" (2/3) ... [2022-11-23 14:39:37,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22965407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:39:37, skipping insertion in model container [2022-11-23 14:39:37,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:39:37" (3/3) ... [2022-11-23 14:39:37,129 INFO L112 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs-b.i [2022-11-23 14:39:37,144 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 14:39:37,177 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:39:37,177 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-23 14:39:37,178 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 14:39:37,251 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 14:39:37,286 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 14:39:37,301 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 86 transitions, 177 flow [2022-11-23 14:39:37,304 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 86 transitions, 177 flow [2022-11-23 14:39:37,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 86 transitions, 177 flow [2022-11-23 14:39:37,350 INFO L130 PetriNetUnfolder]: 5/97 cut-off events. [2022-11-23 14:39:37,351 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 14:39:37,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 97 events. 5/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 69. Up to 4 conditions per place. [2022-11-23 14:39:37,358 INFO L119 LiptonReduction]: Number of co-enabled transitions 1568 [2022-11-23 14:39:39,910 INFO L134 LiptonReduction]: Checked pairs total: 1412 [2022-11-23 14:39:39,911 INFO L136 LiptonReduction]: Total number of compositions: 93 [2022-11-23 14:39:39,919 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 16 transitions, 37 flow [2022-11-23 14:39:39,931 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 52 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 51 states have internal predecessors, (91), 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) [2022-11-23 14:39:39,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:39:39,969 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;@3e090302, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:39:39,969 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-23 14:39:39,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 51 states have internal predecessors, (91), 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) [2022-11-23 14:39:39,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 14:39:39,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:39,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 14:39:39,977 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-11-23 14:39:39,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:39,990 INFO L85 PathProgramCache]: Analyzing trace with hash 13837758, now seen corresponding path program 1 times [2022-11-23 14:39:40,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:40,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142746560] [2022-11-23 14:39:40,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:40,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:40,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:39:40,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:40,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142746560] [2022-11-23 14:39:40,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142746560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:39:40,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:39:40,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:39:40,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101023143] [2022-11-23 14:39:40,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:39:40,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 14:39:40,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:40,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 14:39:40,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:39:40,226 INFO L87 Difference]: Start difference. First operand has 52 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-23 14:39:40,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:40,253 INFO L93 Difference]: Finished difference Result 15 states and 24 transitions. [2022-11-23 14:39:40,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 14:39:40,256 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-11-23 14:39:40,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:40,264 INFO L225 Difference]: With dead ends: 15 [2022-11-23 14:39:40,264 INFO L226 Difference]: Without dead ends: 15 [2022-11-23 14:39:40,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:39:40,269 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:40,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:39:40,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-23 14:39:40,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-23 14:39:40,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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) [2022-11-23 14:39:40,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 24 transitions. [2022-11-23 14:39:40,304 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 24 transitions. Word has length 4 [2022-11-23 14:39:40,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:40,305 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 24 transitions. [2022-11-23 14:39:40,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-23 14:39:40,311 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 24 transitions. [2022-11-23 14:39:40,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 14:39:40,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:40,311 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-23 14:39:40,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:39:40,312 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-11-23 14:39:40,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:40,313 INFO L85 PathProgramCache]: Analyzing trace with hash 413142688, now seen corresponding path program 1 times [2022-11-23 14:39:40,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:40,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997326755] [2022-11-23 14:39:40,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:40,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:39:40,348 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:39:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:39:40,384 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 14:39:40,384 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:39:40,386 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-23 14:39:40,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-11-23 14:39:40,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-11-23 14:39:40,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-11-23 14:39:40,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-11-23 14:39:40,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-11-23 14:39:40,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-11-23 14:39:40,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-11-23 14:39:40,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-11-23 14:39:40,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-11-23 14:39:40,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-11-23 14:39:40,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-11-23 14:39:40,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-11-23 14:39:40,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-11-23 14:39:40,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-11-23 14:39:40,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:39:40,395 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 14:39:40,397 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 14:39:40,397 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-23 14:39:40,439 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 14:39:40,442 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 14:39:40,443 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 143 transitions, 298 flow [2022-11-23 14:39:40,443 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 143 transitions, 298 flow [2022-11-23 14:39:40,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 143 transitions, 298 flow [2022-11-23 14:39:40,491 INFO L130 PetriNetUnfolder]: 9/167 cut-off events. [2022-11-23 14:39:40,491 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 14:39:40,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 167 events. 9/167 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 295 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 125. Up to 6 conditions per place. [2022-11-23 14:39:40,501 INFO L119 LiptonReduction]: Number of co-enabled transitions 9520 [2022-11-23 14:39:43,373 INFO L134 LiptonReduction]: Checked pairs total: 18903 [2022-11-23 14:39:43,374 INFO L136 LiptonReduction]: Total number of compositions: 129 [2022-11-23 14:39:43,375 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 46 transitions, 104 flow [2022-11-23 14:39:43,484 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2148 states, 2011 states have (on average 3.0407757334659373) internal successors, (6115), 2147 states have internal predecessors, (6115), 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) [2022-11-23 14:39:43,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:39:43,491 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;@3e090302, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:39:43,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-23 14:39:43,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 2148 states, 2011 states have (on average 3.0407757334659373) internal successors, (6115), 2147 states have internal predecessors, (6115), 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) [2022-11-23 14:39:43,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 14:39:43,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:43,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 14:39:43,501 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-11-23 14:39:43,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:43,501 INFO L85 PathProgramCache]: Analyzing trace with hash 745761505, now seen corresponding path program 1 times [2022-11-23 14:39:43,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:43,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864109119] [2022-11-23 14:39:43,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:43,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:43,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:39:43,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:43,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864109119] [2022-11-23 14:39:43,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864109119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:39:43,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:39:43,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:39:43,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312801946] [2022-11-23 14:39:43,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:39:43,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:39:43,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:43,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:39:43,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:39:43,607 INFO L87 Difference]: Start difference. First operand has 2148 states, 2011 states have (on average 3.0407757334659373) internal successors, (6115), 2147 states have internal predecessors, (6115), 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, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-23 14:39:43,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:43,748 INFO L93 Difference]: Finished difference Result 1215 states and 3300 transitions. [2022-11-23 14:39:43,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:39:43,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2022-11-23 14:39:43,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:43,767 INFO L225 Difference]: With dead ends: 1215 [2022-11-23 14:39:43,767 INFO L226 Difference]: Without dead ends: 1215 [2022-11-23 14:39:43,767 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 [2022-11-23 14:39:43,768 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 24 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:43,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 21 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:39:43,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2022-11-23 14:39:43,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 995. [2022-11-23 14:39:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 983 states have (on average 2.745676500508647) internal successors, (2699), 994 states have internal predecessors, (2699), 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) [2022-11-23 14:39:43,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 2699 transitions. [2022-11-23 14:39:43,854 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 2699 transitions. Word has length 5 [2022-11-23 14:39:43,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:43,855 INFO L495 AbstractCegarLoop]: Abstraction has 995 states and 2699 transitions. [2022-11-23 14:39:43,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-23 14:39:43,855 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 2699 transitions. [2022-11-23 14:39:43,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:39:43,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:43,856 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-23 14:39:43,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:39:43,857 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-11-23 14:39:43,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:43,857 INFO L85 PathProgramCache]: Analyzing trace with hash -140841124, now seen corresponding path program 1 times [2022-11-23 14:39:43,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:43,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966531679] [2022-11-23 14:39:43,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:43,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:39:43,875 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:39:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:39:43,890 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 14:39:43,894 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:39:43,895 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-23 14:39:43,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-11-23 14:39:43,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-11-23 14:39:43,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-11-23 14:39:43,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-11-23 14:39:43,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-11-23 14:39:43,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-11-23 14:39:43,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-11-23 14:39:43,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-11-23 14:39:43,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-11-23 14:39:43,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-11-23 14:39:43,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-11-23 14:39:43,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-11-23 14:39:43,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-11-23 14:39:43,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-11-23 14:39:43,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-11-23 14:39:43,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-11-23 14:39:43,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-11-23 14:39:43,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-11-23 14:39:43,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-11-23 14:39:43,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-11-23 14:39:43,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-11-23 14:39:43,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:39:43,900 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 14:39:43,901 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 14:39:43,901 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-23 14:39:43,958 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 14:39:43,966 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 14:39:43,966 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 200 transitions, 421 flow [2022-11-23 14:39:43,967 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 200 transitions, 421 flow [2022-11-23 14:39:43,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 200 transitions, 421 flow [2022-11-23 14:39:44,083 INFO L130 PetriNetUnfolder]: 13/237 cut-off events. [2022-11-23 14:39:44,083 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-23 14:39:44,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 237 events. 13/237 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 611 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 181. Up to 8 conditions per place. [2022-11-23 14:39:44,101 INFO L119 LiptonReduction]: Number of co-enabled transitions 23856 [2022-11-23 14:39:47,892 INFO L134 LiptonReduction]: Checked pairs total: 51449 [2022-11-23 14:39:47,892 INFO L136 LiptonReduction]: Total number of compositions: 190 [2022-11-23 14:39:47,893 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 65 transitions, 151 flow [2022-11-23 14:39:49,559 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 38741 states, 37642 states have (on average 3.9567770044099677) internal successors, (148941), 38740 states have internal predecessors, (148941), 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) [2022-11-23 14:39:49,561 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:39:49,561 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;@3e090302, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:39:49,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-23 14:39:49,650 INFO L276 IsEmpty]: Start isEmpty. Operand has 38741 states, 37642 states have (on average 3.9567770044099677) internal successors, (148941), 38740 states have internal predecessors, (148941), 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) [2022-11-23 14:39:49,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 14:39:49,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:49,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 14:39:49,652 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-23 14:39:49,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:49,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1164262237, now seen corresponding path program 1 times [2022-11-23 14:39:49,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:49,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882728183] [2022-11-23 14:39:49,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:49,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:49,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:39:49,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:49,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882728183] [2022-11-23 14:39:49,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882728183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:39:49,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:39:49,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:39:49,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791560383] [2022-11-23 14:39:49,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:39:49,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:39:49,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:49,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:39:49,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:39:49,930 INFO L87 Difference]: Start difference. First operand has 38741 states, 37642 states have (on average 3.9567770044099677) internal successors, (148941), 38740 states have internal predecessors, (148941), 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, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-23 14:39:50,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:50,618 INFO L93 Difference]: Finished difference Result 20683 states and 74522 transitions. [2022-11-23 14:39:50,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:39:50,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2022-11-23 14:39:50,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:50,994 INFO L225 Difference]: With dead ends: 20683 [2022-11-23 14:39:50,994 INFO L226 Difference]: Without dead ends: 20683 [2022-11-23 14:39:50,995 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 [2022-11-23 14:39:51,003 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 34 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:51,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 26 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:39:51,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20683 states. [2022-11-23 14:39:51,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20683 to 15607. [2022-11-23 14:39:51,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15607 states, 15551 states have (on average 3.6634943090476497) internal successors, (56971), 15606 states have internal predecessors, (56971), 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) [2022-11-23 14:39:52,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15607 states to 15607 states and 56971 transitions. [2022-11-23 14:39:52,063 INFO L78 Accepts]: Start accepts. Automaton has 15607 states and 56971 transitions. Word has length 5 [2022-11-23 14:39:52,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:52,064 INFO L495 AbstractCegarLoop]: Abstraction has 15607 states and 56971 transitions. [2022-11-23 14:39:52,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-23 14:39:52,064 INFO L276 IsEmpty]: Start isEmpty. Operand 15607 states and 56971 transitions. [2022-11-23 14:39:52,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 14:39:52,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:52,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:39:52,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:39:52,066 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-23 14:39:52,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:52,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1830295673, now seen corresponding path program 1 times [2022-11-23 14:39:52,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:52,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726221972] [2022-11-23 14:39:52,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:52,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:52,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:39:52,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:52,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726221972] [2022-11-23 14:39:52,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726221972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:39:52,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:39:52,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:39:52,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121459012] [2022-11-23 14:39:52,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:39:52,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:39:52,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:52,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:39:52,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:39:52,141 INFO L87 Difference]: Start difference. First operand 15607 states and 56971 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-11-23 14:39:52,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:52,707 INFO L93 Difference]: Finished difference Result 17308 states and 63014 transitions. [2022-11-23 14:39:52,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:39:52,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2022-11-23 14:39:52,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:52,956 INFO L225 Difference]: With dead ends: 17308 [2022-11-23 14:39:52,956 INFO L226 Difference]: Without dead ends: 17308 [2022-11-23 14:39:52,956 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 [2022-11-23 14:39:52,957 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 29 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:52,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 32 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:39:53,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17308 states. [2022-11-23 14:39:53,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17308 to 16249. [2022-11-23 14:39:53,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16249 states, 16197 states have (on average 3.654071741680558) internal successors, (59185), 16248 states have internal predecessors, (59185), 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) [2022-11-23 14:39:53,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16249 states to 16249 states and 59185 transitions. [2022-11-23 14:39:53,943 INFO L78 Accepts]: Start accepts. Automaton has 16249 states and 59185 transitions. Word has length 13 [2022-11-23 14:39:53,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:53,943 INFO L495 AbstractCegarLoop]: Abstraction has 16249 states and 59185 transitions. [2022-11-23 14:39:53,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-11-23 14:39:53,944 INFO L276 IsEmpty]: Start isEmpty. Operand 16249 states and 59185 transitions. [2022-11-23 14:39:53,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 14:39:53,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:53,952 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-23 14:39:53,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:39:53,952 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-23 14:39:53,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:53,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1856010082, now seen corresponding path program 1 times [2022-11-23 14:39:53,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:53,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829165535] [2022-11-23 14:39:53,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:53,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:39:53,994 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:39:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:39:54,034 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 14:39:54,042 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:39:54,043 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2022-11-23 14:39:54,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2022-11-23 14:39:54,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2022-11-23 14:39:54,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2022-11-23 14:39:54,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2022-11-23 14:39:54,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2022-11-23 14:39:54,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2022-11-23 14:39:54,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2022-11-23 14:39:54,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2022-11-23 14:39:54,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2022-11-23 14:39:54,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2022-11-23 14:39:54,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2022-11-23 14:39:54,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2022-11-23 14:39:54,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2022-11-23 14:39:54,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2022-11-23 14:39:54,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2022-11-23 14:39:54,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2022-11-23 14:39:54,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2022-11-23 14:39:54,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2022-11-23 14:39:54,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2022-11-23 14:39:54,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2022-11-23 14:39:54,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2022-11-23 14:39:54,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2022-11-23 14:39:54,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2022-11-23 14:39:54,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2022-11-23 14:39:54,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2022-11-23 14:39:54,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2022-11-23 14:39:54,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2022-11-23 14:39:54,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2022-11-23 14:39:54,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:39:54,052 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-23 14:39:54,052 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 14:39:54,053 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-23 14:39:54,108 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 14:39:54,112 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 14:39:54,112 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 253 places, 257 transitions, 546 flow [2022-11-23 14:39:54,113 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 253 places, 257 transitions, 546 flow [2022-11-23 14:39:54,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 257 transitions, 546 flow [2022-11-23 14:39:54,190 INFO L130 PetriNetUnfolder]: 17/307 cut-off events. [2022-11-23 14:39:54,190 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-23 14:39:54,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 307 events. 17/307 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 969 event pairs, 0 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 245. Up to 10 conditions per place. [2022-11-23 14:39:54,220 INFO L119 LiptonReduction]: Number of co-enabled transitions 44576 [2022-11-23 14:39:59,225 INFO L134 LiptonReduction]: Checked pairs total: 92709 [2022-11-23 14:39:59,225 INFO L136 LiptonReduction]: Total number of compositions: 232 [2022-11-23 14:39:59,226 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 90 places, 88 transitions, 208 flow [2022-11-23 14:40:27,414 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 775061 states, 766279 states have (on average 5.00618051649595) internal successors, (3836131), 775060 states have internal predecessors, (3836131), 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) [2022-11-23 14:40:27,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:40:27,426 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;@3e090302, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:40:27,427 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-11-23 14:40:28,638 INFO L276 IsEmpty]: Start isEmpty. Operand has 775061 states, 766279 states have (on average 5.00618051649595) internal successors, (3836131), 775060 states have internal predecessors, (3836131), 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) [2022-11-23 14:40:28,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 14:40:28,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:40:28,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 14:40:28,639 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-23 14:40:28,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:40:28,640 INFO L85 PathProgramCache]: Analyzing trace with hash 54448121, now seen corresponding path program 1 times [2022-11-23 14:40:28,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:40:28,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660784253] [2022-11-23 14:40:28,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:28,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:40:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:40:28,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:40:28,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:40:28,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660784253] [2022-11-23 14:40:28,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660784253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:40:28,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:40:28,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:40:28,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404749257] [2022-11-23 14:40:28,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:40:28,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 14:40:28,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:40:28,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 14:40:28,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:40:29,723 INFO L87 Difference]: Start difference. First operand has 775061 states, 766279 states have (on average 5.00618051649595) internal successors, (3836131), 775060 states have internal predecessors, (3836131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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)