./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-deagle/airline-20.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 30e01a73 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_061362aa-3002-44fd-9ea8-e88d9b3c1ac4/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061362aa-3002-44fd-9ea8-e88d9b3c1ac4/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061362aa-3002-44fd-9ea8-e88d9b3c1ac4/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061362aa-3002-44fd-9ea8-e88d9b3c1ac4/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-deagle/airline-20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061362aa-3002-44fd-9ea8-e88d9b3c1ac4/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061362aa-3002-44fd-9ea8-e88d9b3c1ac4/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --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 012c46975e61d3a8df350de2a682cb9d47f59406509497c2ea72a562542ce55a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:29:45,721 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:29:45,821 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061362aa-3002-44fd-9ea8-e88d9b3c1ac4/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-11-23 21:29:45,826 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:29:45,827 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:29:45,853 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:29:45,853 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:29:45,854 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:29:45,855 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:29:45,855 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:29:45,856 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:29:45,857 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:29:45,857 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:29:45,858 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:29:45,858 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:29:45,859 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:29:45,859 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:29:45,860 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:29:45,860 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:29:45,861 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:29:45,861 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:29:45,868 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:29:45,869 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:29:45,869 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:29:45,869 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:29:45,870 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:29:45,870 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:29:45,871 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:29:45,871 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:29:45,871 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:29:45,872 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:29:45,872 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-23 21:29:45,873 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:29:45,873 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:29:45,873 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:29:45,874 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:29:45,874 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:29:45,875 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:29:45,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:29:45,875 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:29:45,876 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:29:45,878 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:29:45,878 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:29:45,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:29:45,879 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:29:45,879 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:29:45,879 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:29:45,879 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:29:45,880 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_061362aa-3002-44fd-9ea8-e88d9b3c1ac4/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061362aa-3002-44fd-9ea8-e88d9b3c1ac4/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 012c46975e61d3a8df350de2a682cb9d47f59406509497c2ea72a562542ce55a [2023-11-23 21:29:46,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:29:46,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:29:46,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:29:46,284 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:29:46,284 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:29:46,286 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061362aa-3002-44fd-9ea8-e88d9b3c1ac4/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/pthread-deagle/airline-20.i [2023-11-23 21:29:49,379 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:29:49,670 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:29:49,671 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061362aa-3002-44fd-9ea8-e88d9b3c1ac4/sv-benchmarks/c/pthread-deagle/airline-20.i [2023-11-23 21:29:49,690 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061362aa-3002-44fd-9ea8-e88d9b3c1ac4/bin/utaipan-verify-mE87zJ7Ire/data/9ecc05a70/e7ed60f2689a46d9be943df46d28e7f3/FLAGdf407276c [2023-11-23 21:29:49,712 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061362aa-3002-44fd-9ea8-e88d9b3c1ac4/bin/utaipan-verify-mE87zJ7Ire/data/9ecc05a70/e7ed60f2689a46d9be943df46d28e7f3 [2023-11-23 21:29:49,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:29:49,718 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:29:49,722 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:29:49,722 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:29:49,729 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:29:49,733 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:29:49" (1/1) ... [2023-11-23 21:29:49,734 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39fbaead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:49, skipping insertion in model container [2023-11-23 21:29:49,734 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:29:49" (1/1) ... [2023-11-23 21:29:49,815 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:29:50,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:29:50,260 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:29:50,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:29:50,345 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:50,346 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:50,354 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:29:50,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:50 WrapperNode [2023-11-23 21:29:50,355 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:29:50,356 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:29:50,356 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:29:50,357 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:29:50,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:50" (1/1) ... [2023-11-23 21:29:50,385 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:50" (1/1) ... [2023-11-23 21:29:50,412 INFO L138 Inliner]: procedures = 162, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2023-11-23 21:29:50,412 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:29:50,413 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:29:50,413 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:29:50,414 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:29:50,423 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:50" (1/1) ... [2023-11-23 21:29:50,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:50" (1/1) ... [2023-11-23 21:29:50,427 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:50" (1/1) ... [2023-11-23 21:29:50,427 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:50" (1/1) ... [2023-11-23 21:29:50,435 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:50" (1/1) ... [2023-11-23 21:29:50,439 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:50" (1/1) ... [2023-11-23 21:29:50,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:50" (1/1) ... [2023-11-23 21:29:50,443 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:50" (1/1) ... [2023-11-23 21:29:50,447 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:29:50,447 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:29:50,448 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:29:50,448 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:29:50,449 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:50" (1/1) ... [2023-11-23 21:29:50,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:29:50,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061362aa-3002-44fd-9ea8-e88d9b3c1ac4/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:29:50,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061362aa-3002-44fd-9ea8-e88d9b3c1ac4/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:29:50,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061362aa-3002-44fd-9ea8-e88d9b3c1ac4/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:29:50,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:29:50,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:29:50,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 21:29:50,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:29:50,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:29:50,553 INFO L130 BoogieDeclarations]: Found specification of procedure salethread [2023-11-23 21:29:50,553 INFO L138 BoogieDeclarations]: Found implementation of procedure salethread [2023-11-23 21:29:50,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:29:50,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:29:50,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 21:29:50,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:29:50,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:29:50,556 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:29:50,713 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:29:50,715 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:29:50,967 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:29:51,015 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:29:51,016 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 21:29:51,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:29:51 BoogieIcfgContainer [2023-11-23 21:29:51,017 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:29:51,020 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:29:51,020 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:29:51,024 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:29:51,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:29:49" (1/3) ... [2023-11-23 21:29:51,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba28fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:29:51, skipping insertion in model container [2023-11-23 21:29:51,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:50" (2/3) ... [2023-11-23 21:29:51,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba28fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:29:51, skipping insertion in model container [2023-11-23 21:29:51,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:29:51" (3/3) ... [2023-11-23 21:29:51,027 INFO L112 eAbstractionObserver]: Analyzing ICFG airline-20.i [2023-11-23 21:29:51,036 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 21:29:51,047 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:29:51,047 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-23 21:29:51,048 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:29:51,107 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-23 21:29:51,153 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 88 places, 92 transitions, 191 flow [2023-11-23 21:29:51,245 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 802 states, 772 states have (on average 2.1463730569948187) internal successors, (1657), 801 states have internal predecessors, (1657), 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) [2023-11-23 21:29:51,263 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:29:51,271 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=LoopHeads, 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;@2753bd9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:29:51,272 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-23 21:29:51,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 802 states, 772 states have (on average 2.1463730569948187) internal successors, (1657), 801 states have internal predecessors, (1657), 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) [2023-11-23 21:29:51,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 21:29:51,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:51,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:51,287 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-11-23 21:29:51,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:51,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1557855436, now seen corresponding path program 1 times [2023-11-23 21:29:51,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:51,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002969857] [2023-11-23 21:29:51,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:51,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:51,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:29:51,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:51,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002969857] [2023-11-23 21:29:51,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002969857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:51,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:51,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:29:51,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155200670] [2023-11-23 21:29:51,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:51,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:29:51,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:51,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:29:51,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:29:51,660 INFO L87 Difference]: Start difference. First operand has 802 states, 772 states have (on average 2.1463730569948187) internal successors, (1657), 801 states have internal predecessors, (1657), 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 16.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2023-11-23 21:29:51,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:51,731 INFO L93 Difference]: Finished difference Result 667 states and 1315 transitions. [2023-11-23 21:29:51,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:29:51,738 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 16.0) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2023-11-23 21:29:51,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:51,757 INFO L225 Difference]: With dead ends: 667 [2023-11-23 21:29:51,758 INFO L226 Difference]: Without dead ends: 562 [2023-11-23 21:29:51,759 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 [2023-11-23 21:29:51,764 INFO L413 NwaCegarLoop]: 73 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, 73 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 [2023-11-23 21:29:51,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:29:51,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2023-11-23 21:29:51,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2023-11-23 21:29:51,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 545 states have (on average 1.981651376146789) internal successors, (1080), 561 states have internal predecessors, (1080), 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) [2023-11-23 21:29:51,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1080 transitions. [2023-11-23 21:29:51,889 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1080 transitions. Word has length 16 [2023-11-23 21:29:51,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:51,890 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 1080 transitions. [2023-11-23 21:29:51,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 16.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2023-11-23 21:29:51,892 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1080 transitions. [2023-11-23 21:29:51,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 21:29:51,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:51,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:51,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:29:51,896 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-11-23 21:29:51,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:51,897 INFO L85 PathProgramCache]: Analyzing trace with hash -974512921, now seen corresponding path program 1 times [2023-11-23 21:29:51,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:51,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667814271] [2023-11-23 21:29:51,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:51,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:52,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:29:52,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:52,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667814271] [2023-11-23 21:29:52,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667814271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:52,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:52,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:29:52,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484862181] [2023-11-23 21:29:52,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:52,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:29:52,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:52,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:29:52,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:52,111 INFO L87 Difference]: Start difference. First operand 562 states and 1080 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-23 21:29:52,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:52,158 INFO L93 Difference]: Finished difference Result 560 states and 1077 transitions. [2023-11-23 21:29:52,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:29:52,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2023-11-23 21:29:52,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:52,164 INFO L225 Difference]: With dead ends: 560 [2023-11-23 21:29:52,164 INFO L226 Difference]: Without dead ends: 560 [2023-11-23 21:29:52,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:52,166 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 25 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:52,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 132 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:29:52,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2023-11-23 21:29:52,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2023-11-23 21:29:52,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 543 states have (on average 1.9834254143646408) internal successors, (1077), 559 states have internal predecessors, (1077), 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) [2023-11-23 21:29:52,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1077 transitions. [2023-11-23 21:29:52,192 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1077 transitions. Word has length 26 [2023-11-23 21:29:52,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:52,193 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 1077 transitions. [2023-11-23 21:29:52,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-23 21:29:52,193 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1077 transitions. [2023-11-23 21:29:52,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 21:29:52,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:52,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:52,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:29:52,195 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting salethreadErr0ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-11-23 21:29:52,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:52,195 INFO L85 PathProgramCache]: Analyzing trace with hash -929159752, now seen corresponding path program 1 times [2023-11-23 21:29:52,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:52,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022213672] [2023-11-23 21:29:52,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:52,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:52,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:29:52,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:52,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022213672] [2023-11-23 21:29:52,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022213672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:52,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:52,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:29:52,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366959424] [2023-11-23 21:29:52,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:52,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:29:52,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:52,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:29:52,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:52,258 INFO L87 Difference]: Start difference. First operand 560 states and 1077 transitions. Second operand has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 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) [2023-11-23 21:29:52,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:52,308 INFO L93 Difference]: Finished difference Result 641 states and 1194 transitions. [2023-11-23 21:29:52,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:29:52,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2023-11-23 21:29:52,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:52,314 INFO L225 Difference]: With dead ends: 641 [2023-11-23 21:29:52,314 INFO L226 Difference]: Without dead ends: 641 [2023-11-23 21:29:52,315 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 [2023-11-23 21:29:52,319 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 56 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:52,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 172 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:29:52,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-11-23 21:29:52,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 521. [2023-11-23 21:29:52,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 510 states have (on average 1.9607843137254901) internal successors, (1000), 520 states have internal predecessors, (1000), 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) [2023-11-23 21:29:52,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 1000 transitions. [2023-11-23 21:29:52,342 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 1000 transitions. Word has length 27 [2023-11-23 21:29:52,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:52,342 INFO L495 AbstractCegarLoop]: Abstraction has 521 states and 1000 transitions. [2023-11-23 21:29:52,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 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) [2023-11-23 21:29:52,343 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 1000 transitions. [2023-11-23 21:29:52,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-23 21:29:52,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:52,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:52,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:29:52,346 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting salethreadErr1ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-11-23 21:29:52,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:52,347 INFO L85 PathProgramCache]: Analyzing trace with hash 466346869, now seen corresponding path program 1 times [2023-11-23 21:29:52,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:52,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654701028] [2023-11-23 21:29:52,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:52,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:52,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:29:52,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:52,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654701028] [2023-11-23 21:29:52,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654701028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:52,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:52,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:29:52,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491404709] [2023-11-23 21:29:52,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:52,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:29:52,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:52,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:29:52,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:52,429 INFO L87 Difference]: Start difference. First operand 521 states and 1000 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2023-11-23 21:29:52,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:52,458 INFO L93 Difference]: Finished difference Result 585 states and 1086 transitions. [2023-11-23 21:29:52,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:29:52,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2023-11-23 21:29:52,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:52,462 INFO L225 Difference]: With dead ends: 585 [2023-11-23 21:29:52,462 INFO L226 Difference]: Without dead ends: 479 [2023-11-23 21:29:52,463 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 [2023-11-23 21:29:52,464 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 54 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:52,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 156 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:29:52,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-11-23 21:29:52,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 379. [2023-11-23 21:29:52,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 375 states have (on average 1.9253333333333333) internal successors, (722), 378 states have internal predecessors, (722), 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) [2023-11-23 21:29:52,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 722 transitions. [2023-11-23 21:29:52,480 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 722 transitions. Word has length 30 [2023-11-23 21:29:52,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:52,480 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 722 transitions. [2023-11-23 21:29:52,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2023-11-23 21:29:52,481 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 722 transitions. [2023-11-23 21:29:52,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-23 21:29:52,483 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:52,483 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:52,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:29:52,484 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-11-23 21:29:52,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:52,484 INFO L85 PathProgramCache]: Analyzing trace with hash -432073854, now seen corresponding path program 1 times [2023-11-23 21:29:52,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:52,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138385329] [2023-11-23 21:29:52,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:52,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:29:52,521 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:29:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:29:52,559 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:29:52,560 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:29:52,561 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2023-11-23 21:29:52,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2023-11-23 21:29:52,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2023-11-23 21:29:52,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2023-11-23 21:29:52,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2023-11-23 21:29:52,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2023-11-23 21:29:52,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2023-11-23 21:29:52,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2023-11-23 21:29:52,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2023-11-23 21:29:52,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2023-11-23 21:29:52,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2023-11-23 21:29:52,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2023-11-23 21:29:52,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2023-11-23 21:29:52,574 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2023-11-23 21:29:52,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:29:52,596 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-23 21:29:52,601 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 21:29:52,601 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-23 21:29:52,627 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-23 21:29:52,635 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 108 places, 113 transitions, 242 flow [2023-11-23 21:29:53,277 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 15058 states, 14898 states have (on average 3.1137065377903075) internal successors, (46388), 15057 states have internal predecessors, (46388), 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) [2023-11-23 21:29:53,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:29:53,280 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=LoopHeads, 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;@2753bd9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:29:53,281 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-23 21:29:53,316 INFO L276 IsEmpty]: Start isEmpty. Operand has 15058 states, 14898 states have (on average 3.1137065377903075) internal successors, (46388), 15057 states have internal predecessors, (46388), 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) [2023-11-23 21:29:53,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 21:29:53,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:53,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:53,317 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-23 21:29:53,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:53,318 INFO L85 PathProgramCache]: Analyzing trace with hash -216625716, now seen corresponding path program 1 times [2023-11-23 21:29:53,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:53,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007264038] [2023-11-23 21:29:53,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:53,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:53,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:29:53,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:53,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007264038] [2023-11-23 21:29:53,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007264038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:53,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:53,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:29:53,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296546895] [2023-11-23 21:29:53,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:53,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:29:53,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:53,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:29:53,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:29:53,376 INFO L87 Difference]: Start difference. First operand has 15058 states, 14898 states have (on average 3.1137065377903075) internal successors, (46388), 15057 states have internal predecessors, (46388), 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 16.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2023-11-23 21:29:53,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:53,645 INFO L93 Difference]: Finished difference Result 11179 states and 33381 transitions. [2023-11-23 21:29:53,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:29:53,646 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 16.0) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2023-11-23 21:29:53,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:53,758 INFO L225 Difference]: With dead ends: 11179 [2023-11-23 21:29:53,759 INFO L226 Difference]: Without dead ends: 10138 [2023-11-23 21:29:53,759 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 [2023-11-23 21:29:53,760 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:53,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:29:53,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10138 states. [2023-11-23 21:29:54,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10138 to 10138. [2023-11-23 21:29:54,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10138 states, 10065 states have (on average 2.9806259314456036) internal successors, (30000), 10137 states have internal predecessors, (30000), 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) [2023-11-23 21:29:54,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10138 states to 10138 states and 30000 transitions. [2023-11-23 21:29:54,425 INFO L78 Accepts]: Start accepts. Automaton has 10138 states and 30000 transitions. Word has length 16 [2023-11-23 21:29:54,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:54,426 INFO L495 AbstractCegarLoop]: Abstraction has 10138 states and 30000 transitions. [2023-11-23 21:29:54,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 16.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2023-11-23 21:29:54,426 INFO L276 IsEmpty]: Start isEmpty. Operand 10138 states and 30000 transitions. [2023-11-23 21:29:54,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 21:29:54,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:54,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:54,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:29:54,429 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-23 21:29:54,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:54,430 INFO L85 PathProgramCache]: Analyzing trace with hash -645241721, now seen corresponding path program 1 times [2023-11-23 21:29:54,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:54,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233177984] [2023-11-23 21:29:54,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:54,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:54,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:29:54,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:54,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233177984] [2023-11-23 21:29:54,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233177984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:54,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:54,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:29:54,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151738927] [2023-11-23 21:29:54,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:54,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:29:54,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:54,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:29:54,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:54,499 INFO L87 Difference]: Start difference. First operand 10138 states and 30000 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-23 21:29:54,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:54,735 INFO L93 Difference]: Finished difference Result 10136 states and 29997 transitions. [2023-11-23 21:29:54,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:29:54,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2023-11-23 21:29:54,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:54,808 INFO L225 Difference]: With dead ends: 10136 [2023-11-23 21:29:54,808 INFO L226 Difference]: Without dead ends: 10136 [2023-11-23 21:29:54,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:54,810 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 25 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:54,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 164 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:29:54,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10136 states. [2023-11-23 21:29:55,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10136 to 10136. [2023-11-23 21:29:55,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10136 states, 10063 states have (on average 2.980920202722846) internal successors, (29997), 10135 states have internal predecessors, (29997), 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) [2023-11-23 21:29:55,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10136 states to 10136 states and 29997 transitions. [2023-11-23 21:29:55,410 INFO L78 Accepts]: Start accepts. Automaton has 10136 states and 29997 transitions. Word has length 26 [2023-11-23 21:29:55,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:55,413 INFO L495 AbstractCegarLoop]: Abstraction has 10136 states and 29997 transitions. [2023-11-23 21:29:55,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-23 21:29:55,413 INFO L276 IsEmpty]: Start isEmpty. Operand 10136 states and 29997 transitions. [2023-11-23 21:29:55,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 21:29:55,415 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:55,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:55,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:29:55,416 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting salethreadErr0ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-23 21:29:55,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:55,417 INFO L85 PathProgramCache]: Analyzing trace with hash 688878998, now seen corresponding path program 1 times [2023-11-23 21:29:55,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:55,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554979567] [2023-11-23 21:29:55,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:55,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:55,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:29:55,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:55,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554979567] [2023-11-23 21:29:55,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554979567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:55,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:55,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:29:55,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153572407] [2023-11-23 21:29:55,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:55,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:29:55,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:55,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:29:55,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:55,472 INFO L87 Difference]: Start difference. First operand 10136 states and 29997 transitions. Second operand has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 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) [2023-11-23 21:29:55,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:55,689 INFO L93 Difference]: Finished difference Result 13415 states and 38187 transitions. [2023-11-23 21:29:55,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:29:55,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2023-11-23 21:29:55,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:55,779 INFO L225 Difference]: With dead ends: 13415 [2023-11-23 21:29:55,779 INFO L226 Difference]: Without dead ends: 13415 [2023-11-23 21:29:55,779 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 [2023-11-23 21:29:55,781 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 73 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:55,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 212 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:29:55,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13415 states. [2023-11-23 21:29:56,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13415 to 9599. [2023-11-23 21:29:56,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9599 states, 9544 states have (on average 2.946144174350377) internal successors, (28118), 9598 states have internal predecessors, (28118), 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) [2023-11-23 21:29:56,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9599 states to 9599 states and 28118 transitions. [2023-11-23 21:29:56,426 INFO L78 Accepts]: Start accepts. Automaton has 9599 states and 28118 transitions. Word has length 27 [2023-11-23 21:29:56,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:56,427 INFO L495 AbstractCegarLoop]: Abstraction has 9599 states and 28118 transitions. [2023-11-23 21:29:56,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 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) [2023-11-23 21:29:56,427 INFO L276 IsEmpty]: Start isEmpty. Operand 9599 states and 28118 transitions. [2023-11-23 21:29:56,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-23 21:29:56,432 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:56,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:56,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:29:56,433 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting salethreadErr1ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-23 21:29:56,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:56,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1040897320, now seen corresponding path program 1 times [2023-11-23 21:29:56,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:56,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778928212] [2023-11-23 21:29:56,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:56,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:56,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:29:56,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:56,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778928212] [2023-11-23 21:29:56,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778928212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:56,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:56,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:29:56,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762012673] [2023-11-23 21:29:56,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:56,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:29:56,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:56,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:29:56,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:56,513 INFO L87 Difference]: Start difference. First operand 9599 states and 28118 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2023-11-23 21:29:56,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:56,659 INFO L93 Difference]: Finished difference Result 12307 states and 34746 transitions. [2023-11-23 21:29:56,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:29:56,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2023-11-23 21:29:56,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:56,711 INFO L225 Difference]: With dead ends: 12307 [2023-11-23 21:29:56,712 INFO L226 Difference]: Without dead ends: 10751 [2023-11-23 21:29:56,712 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 [2023-11-23 21:29:56,713 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 71 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:56,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 206 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:29:56,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10751 states. [2023-11-23 21:29:57,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10751 to 8105. [2023-11-23 21:29:57,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8105 states, 8063 states have (on average 2.8505519037579066) internal successors, (22984), 8104 states have internal predecessors, (22984), 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) [2023-11-23 21:29:57,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8105 states to 8105 states and 22984 transitions. [2023-11-23 21:29:57,131 INFO L78 Accepts]: Start accepts. Automaton has 8105 states and 22984 transitions. Word has length 30 [2023-11-23 21:29:57,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:57,131 INFO L495 AbstractCegarLoop]: Abstraction has 8105 states and 22984 transitions. [2023-11-23 21:29:57,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2023-11-23 21:29:57,132 INFO L276 IsEmpty]: Start isEmpty. Operand 8105 states and 22984 transitions. [2023-11-23 21:29:57,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-23 21:29:57,133 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:57,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:57,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 21:29:57,134 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-23 21:29:57,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:57,134 INFO L85 PathProgramCache]: Analyzing trace with hash -457973571, now seen corresponding path program 1 times [2023-11-23 21:29:57,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:57,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735643902] [2023-11-23 21:29:57,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:57,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:57,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:29:57,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:57,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735643902] [2023-11-23 21:29:57,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735643902] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:29:57,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453753032] [2023-11-23 21:29:57,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:57,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:29:57,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061362aa-3002-44fd-9ea8-e88d9b3c1ac4/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:29:57,270 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061362aa-3002-44fd-9ea8-e88d9b3c1ac4/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:29:57,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061362aa-3002-44fd-9ea8-e88d9b3c1ac4/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:29:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:57,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:29:57,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:57,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:29:57,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:29:57,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:29:57,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453753032] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:29:57,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [992921557] [2023-11-23 21:29:57,544 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-23 21:29:57,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:29:57,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-23 21:29:57,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104708215] [2023-11-23 21:29:57,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:29:57,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 21:29:57,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:57,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 21:29:57,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:29:57,549 INFO L87 Difference]: Start difference. First operand 8105 states and 22984 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 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) [2023-11-23 21:29:57,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:57,703 INFO L93 Difference]: Finished difference Result 2672 states and 7830 transitions. [2023-11-23 21:29:57,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:29:57,704 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 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 39 [2023-11-23 21:29:57,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:57,717 INFO L225 Difference]: With dead ends: 2672 [2023-11-23 21:29:57,717 INFO L226 Difference]: Without dead ends: 2672 [2023-11-23 21:29:57,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:29:57,721 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 380 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:57,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 393 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:29:57,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2023-11-23 21:29:57,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 2672. [2023-11-23 21:29:57,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2672 states, 2667 states have (on average 2.935883014623172) internal successors, (7830), 2671 states have internal predecessors, (7830), 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) [2023-11-23 21:29:57,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 7830 transitions. [2023-11-23 21:29:57,887 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 7830 transitions. Word has length 39 [2023-11-23 21:29:57,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:57,888 INFO L495 AbstractCegarLoop]: Abstraction has 2672 states and 7830 transitions. [2023-11-23 21:29:57,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 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) [2023-11-23 21:29:57,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 7830 transitions. [2023-11-23 21:29:57,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-23 21:29:57,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:57,891 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:57,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061362aa-3002-44fd-9ea8-e88d9b3c1ac4/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:29:58,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_061362aa-3002-44fd-9ea8-e88d9b3c1ac4/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:29:58,106 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-23 21:29:58,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:58,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1772929582, now seen corresponding path program 1 times [2023-11-23 21:29:58,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:58,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056503827] [2023-11-23 21:29:58,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:58,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:29:58,136 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:29:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:29:58,167 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:29:58,167 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:29:58,168 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-11-23 21:29:58,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2023-11-23 21:29:58,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2023-11-23 21:29:58,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2023-11-23 21:29:58,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2023-11-23 21:29:58,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2023-11-23 21:29:58,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2023-11-23 21:29:58,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2023-11-23 21:29:58,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2023-11-23 21:29:58,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2023-11-23 21:29:58,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2023-11-23 21:29:58,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2023-11-23 21:29:58,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2023-11-23 21:29:58,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2023-11-23 21:29:58,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2023-11-23 21:29:58,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2023-11-23 21:29:58,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2023-11-23 21:29:58,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2023-11-23 21:29:58,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 21:29:58,176 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-23 21:29:58,177 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 21:29:58,177 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-23 21:29:58,220 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-23 21:29:58,231 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 128 places, 134 transitions, 295 flow [2023-11-23 21:30:08,212 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 282952 states, 282052 states have (on average 4.105477004240353) internal successors, (1157958), 282951 states have internal predecessors, (1157958), 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) [2023-11-23 21:30:08,223 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:30:08,223 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=LoopHeads, 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;@2753bd9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:30:08,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-23 21:30:08,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 282952 states, 282052 states have (on average 4.105477004240353) internal successors, (1157958), 282951 states have internal predecessors, (1157958), 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) [2023-11-23 21:30:08,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 21:30:08,703 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:08,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:08,704 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-23 21:30:08,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:08,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1902783540, now seen corresponding path program 1 times [2023-11-23 21:30:08,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:08,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278064808] [2023-11-23 21:30:08,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:08,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:08,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:30:08,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:08,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278064808] [2023-11-23 21:30:08,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278064808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:08,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:08,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:30:08,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172174827] [2023-11-23 21:30:08,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:08,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:30:08,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:08,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:30:08,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:30:09,104 INFO L87 Difference]: Start difference. First operand has 282952 states, 282052 states have (on average 4.105477004240353) internal successors, (1157958), 282951 states have internal predecessors, (1157958), 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 16.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2023-11-23 21:30:13,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:13,267 INFO L93 Difference]: Finished difference Result 187531 states and 750164 transitions. [2023-11-23 21:30:13,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:30:13,268 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 16.0) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2023-11-23 21:30:13,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:15,718 INFO L225 Difference]: With dead ends: 187531 [2023-11-23 21:30:15,718 INFO L226 Difference]: Without dead ends: 178066 [2023-11-23 21:30:15,719 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 [2023-11-23 21:30:15,720 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:15,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:30:16,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178066 states. [2023-11-23 21:30:23,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178066 to 178066. [2023-11-23 21:30:24,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178066 states, 177773 states have (on average 3.988845325218115) internal successors, (709109), 178065 states have internal predecessors, (709109), 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) [2023-11-23 21:30:25,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178066 states to 178066 states and 709109 transitions. [2023-11-23 21:30:25,986 INFO L78 Accepts]: Start accepts. Automaton has 178066 states and 709109 transitions. Word has length 16 [2023-11-23 21:30:25,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:25,986 INFO L495 AbstractCegarLoop]: Abstraction has 178066 states and 709109 transitions. [2023-11-23 21:30:25,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 16.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2023-11-23 21:30:25,987 INFO L276 IsEmpty]: Start isEmpty. Operand 178066 states and 709109 transitions. [2023-11-23 21:30:25,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 21:30:25,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:25,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:25,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 21:30:25,988 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-23 21:30:25,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:25,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1645649479, now seen corresponding path program 1 times [2023-11-23 21:30:25,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:25,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294187679] [2023-11-23 21:30:25,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:25,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:26,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:30:26,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:26,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294187679] [2023-11-23 21:30:26,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294187679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:26,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:26,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:30:26,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216054113] [2023-11-23 21:30:26,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:26,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:30:26,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:26,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:30:26,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:30:26,024 INFO L87 Difference]: Start difference. First operand 178066 states and 709109 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-23 21:30:28,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:28,662 INFO L93 Difference]: Finished difference Result 178064 states and 709106 transitions. [2023-11-23 21:30:28,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:30:28,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2023-11-23 21:30:28,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:30,815 INFO L225 Difference]: With dead ends: 178064 [2023-11-23 21:30:30,816 INFO L226 Difference]: Without dead ends: 178064 [2023-11-23 21:30:30,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:30:30,817 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 25 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:30,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 194 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:30:31,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178064 states.