./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/27_Boop_simple_vf.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff 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_aea396cb-186c-4974-b769-9f1906eebc75/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea396cb-186c-4974-b769-9f1906eebc75/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea396cb-186c-4974-b769-9f1906eebc75/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea396cb-186c-4974-b769-9f1906eebc75/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/27_Boop_simple_vf.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea396cb-186c-4974-b769-9f1906eebc75/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea396cb-186c-4974-b769-9f1906eebc75/bin/utaipan-verify-t7M7D8N6sZ --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 ce64fcfa63b9df647c320ea90e20b624e2dad5b9ca256083b6d2f56c3177560a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:24:35,438 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:24:35,546 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea396cb-186c-4974-b769-9f1906eebc75/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-11-19 05:24:35,552 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:24:35,553 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:24:35,597 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:24:35,598 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:24:35,598 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:24:35,599 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:24:35,606 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:24:35,607 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:24:35,607 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:24:35,608 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:24:35,610 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:24:35,611 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:24:35,611 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:24:35,611 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:24:35,612 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:24:35,612 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:24:35,613 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:24:35,613 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:24:35,614 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:24:35,615 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:24:35,615 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:24:35,616 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:24:35,616 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:24:35,617 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:24:35,617 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:24:35,617 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:24:35,618 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:24:35,619 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:24:35,619 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 05:24:35,620 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:24:35,620 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:24:35,620 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:24:35,620 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:24:35,621 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:24:35,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:24:35,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:24:35,621 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:24:35,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:24:35,622 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:24:35,622 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:24:35,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:24:35,623 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:24:35,623 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:24:35,624 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:24:35,624 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_aea396cb-186c-4974-b769-9f1906eebc75/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea396cb-186c-4974-b769-9f1906eebc75/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce64fcfa63b9df647c320ea90e20b624e2dad5b9ca256083b6d2f56c3177560a [2023-11-19 05:24:35,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:24:35,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:24:35,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:24:35,927 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:24:35,928 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:24:35,930 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea396cb-186c-4974-b769-9f1906eebc75/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/pthread-ext/27_Boop_simple_vf.i [2023-11-19 05:24:39,182 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:24:39,428 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:24:39,429 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea396cb-186c-4974-b769-9f1906eebc75/sv-benchmarks/c/pthread-ext/27_Boop_simple_vf.i [2023-11-19 05:24:39,448 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea396cb-186c-4974-b769-9f1906eebc75/bin/utaipan-verify-t7M7D8N6sZ/data/8b86db96a/971d27ece30840c1a403f9f9d0f33d37/FLAGeb21b3d39 [2023-11-19 05:24:39,463 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea396cb-186c-4974-b769-9f1906eebc75/bin/utaipan-verify-t7M7D8N6sZ/data/8b86db96a/971d27ece30840c1a403f9f9d0f33d37 [2023-11-19 05:24:39,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:24:39,467 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:24:39,468 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:24:39,469 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:24:39,474 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:24:39,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:24:39" (1/1) ... [2023-11-19 05:24:39,475 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1424f672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:39, skipping insertion in model container [2023-11-19 05:24:39,475 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:24:39" (1/1) ... [2023-11-19 05:24:39,543 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:24:39,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:24:39,909 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:24:39,985 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:24:40,037 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:24:40,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:40 WrapperNode [2023-11-19 05:24:40,038 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:24:40,039 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:24:40,039 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:24:40,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:24:40,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:40" (1/1) ... [2023-11-19 05:24:40,065 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:40" (1/1) ... [2023-11-19 05:24:40,105 INFO L138 Inliner]: procedures = 170, calls = 16, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 111 [2023-11-19 05:24:40,108 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:24:40,108 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:24:40,108 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:24:40,109 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:24:40,118 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:40" (1/1) ... [2023-11-19 05:24:40,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:40" (1/1) ... [2023-11-19 05:24:40,133 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:40" (1/1) ... [2023-11-19 05:24:40,134 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:40" (1/1) ... [2023-11-19 05:24:40,146 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:40" (1/1) ... [2023-11-19 05:24:40,150 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:40" (1/1) ... [2023-11-19 05:24:40,152 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:40" (1/1) ... [2023-11-19 05:24:40,153 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:40" (1/1) ... [2023-11-19 05:24:40,156 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:24:40,157 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:24:40,158 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:24:40,158 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:24:40,159 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:40" (1/1) ... [2023-11-19 05:24:40,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:24:40,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea396cb-186c-4974-b769-9f1906eebc75/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:24:40,189 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea396cb-186c-4974-b769-9f1906eebc75/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:24:40,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea396cb-186c-4974-b769-9f1906eebc75/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:24:40,226 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-11-19 05:24:40,227 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-11-19 05:24:40,227 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 05:24:40,227 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 05:24:40,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:24:40,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:24:40,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:24:40,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:24:40,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:24:40,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:24:40,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:24:40,230 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 05:24:40,362 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:24:40,365 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:24:40,592 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:24:40,602 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:24:40,603 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-19 05:24:40,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:24:40 BoogieIcfgContainer [2023-11-19 05:24:40,607 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:24:40,610 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:24:40,610 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:24:40,614 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:24:40,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:24:39" (1/3) ... [2023-11-19 05:24:40,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16642bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:24:40, skipping insertion in model container [2023-11-19 05:24:40,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:40" (2/3) ... [2023-11-19 05:24:40,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16642bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:24:40, skipping insertion in model container [2023-11-19 05:24:40,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:24:40" (3/3) ... [2023-11-19 05:24:40,617 INFO L112 eAbstractionObserver]: Analyzing ICFG 27_Boop_simple_vf.i [2023-11-19 05:24:40,626 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 05:24:40,637 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:24:40,637 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-11-19 05:24:40,637 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 05:24:40,750 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 05:24:40,785 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:24:40,798 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 161 transitions, 330 flow [2023-11-19 05:24:40,801 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 161 transitions, 330 flow [2023-11-19 05:24:40,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 161 transitions, 330 flow [2023-11-19 05:24:40,892 INFO L124 PetriNetUnfolderBase]: 14/171 cut-off events. [2023-11-19 05:24:40,893 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 05:24:40,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 171 events. 14/171 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 379 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 155. Up to 4 conditions per place. [2023-11-19 05:24:40,914 INFO L119 LiptonReduction]: Number of co-enabled transitions 10442 [2023-11-19 05:24:43,580 INFO L134 LiptonReduction]: Checked pairs total: 65597 [2023-11-19 05:24:43,580 INFO L136 LiptonReduction]: Total number of compositions: 124 [2023-11-19 05:24:43,589 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 77 places, 80 transitions, 168 flow [2023-11-19 05:24:43,856 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4877 states, 4699 states have (on average 3.090657586720579) internal successors, (14523), 4876 states have internal predecessors, (14523), 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) [2023-11-19 05:24:43,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:24:43,898 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;@c238b68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:24:43,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-11-19 05:24:43,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 4877 states, 4699 states have (on average 3.090657586720579) internal successors, (14523), 4876 states have internal predecessors, (14523), 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) [2023-11-19 05:24:43,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:24:43,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:43,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:24:43,927 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-19 05:24:43,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:43,934 INFO L85 PathProgramCache]: Analyzing trace with hash 610340324, now seen corresponding path program 1 times [2023-11-19 05:24:43,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:43,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473348116] [2023-11-19 05:24:43,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:43,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:44,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:44,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:24:44,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473348116] [2023-11-19 05:24:44,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473348116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:24:44,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:24:44,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:24:44,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549964061] [2023-11-19 05:24:44,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:24:44,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:24:44,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:24:44,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:24:44,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:24:44,271 INFO L87 Difference]: Start difference. First operand has 4877 states, 4699 states have (on average 3.090657586720579) internal successors, (14523), 4876 states have internal predecessors, (14523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:24:44,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:24:44,507 INFO L93 Difference]: Finished difference Result 3946 states and 11108 transitions. [2023-11-19 05:24:44,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:24:44,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 05:24:44,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:24:44,572 INFO L225 Difference]: With dead ends: 3946 [2023-11-19 05:24:44,573 INFO L226 Difference]: Without dead ends: 3946 [2023-11-19 05:24:44,573 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 [2023-11-19 05:24:44,577 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 27 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:24:44,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 67 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:24:44,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2023-11-19 05:24:44,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 3946. [2023-11-19 05:24:44,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3946 states, 3863 states have (on average 2.87548537406161) internal successors, (11108), 3945 states have internal predecessors, (11108), 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) [2023-11-19 05:24:44,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3946 states to 3946 states and 11108 transitions. [2023-11-19 05:24:44,853 INFO L78 Accepts]: Start accepts. Automaton has 3946 states and 11108 transitions. Word has length 5 [2023-11-19 05:24:44,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:24:44,853 INFO L495 AbstractCegarLoop]: Abstraction has 3946 states and 11108 transitions. [2023-11-19 05:24:44,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:24:44,854 INFO L276 IsEmpty]: Start isEmpty. Operand 3946 states and 11108 transitions. [2023-11-19 05:24:44,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:24:44,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:44,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:24:44,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:24:44,855 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-19 05:24:44,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:44,856 INFO L85 PathProgramCache]: Analyzing trace with hash 2055431023, now seen corresponding path program 1 times [2023-11-19 05:24:44,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:44,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995141410] [2023-11-19 05:24:44,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:44,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:44,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:44,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:24:44,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995141410] [2023-11-19 05:24:44,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995141410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:24:44,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:24:44,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:24:44,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614717406] [2023-11-19 05:24:44,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:24:44,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:24:44,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:24:44,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:24:44,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:24:44,969 INFO L87 Difference]: Start difference. First operand 3946 states and 11108 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:24:45,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:24:45,120 INFO L93 Difference]: Finished difference Result 3939 states and 11087 transitions. [2023-11-19 05:24:45,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:24:45,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 05:24:45,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:24:45,158 INFO L225 Difference]: With dead ends: 3939 [2023-11-19 05:24:45,158 INFO L226 Difference]: Without dead ends: 3939 [2023-11-19 05:24:45,159 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 [2023-11-19 05:24:45,160 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 27 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:24:45,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 74 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:24:45,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2023-11-19 05:24:45,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 3939. [2023-11-19 05:24:45,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3939 states, 3859 states have (on average 2.8730240995076444) internal successors, (11087), 3938 states have internal predecessors, (11087), 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) [2023-11-19 05:24:45,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 11087 transitions. [2023-11-19 05:24:45,408 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 11087 transitions. Word has length 8 [2023-11-19 05:24:45,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:24:45,409 INFO L495 AbstractCegarLoop]: Abstraction has 3939 states and 11087 transitions. [2023-11-19 05:24:45,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:24:45,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 11087 transitions. [2023-11-19 05:24:45,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:24:45,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:45,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:24:45,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:24:45,414 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-19 05:24:45,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:45,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1255196544, now seen corresponding path program 1 times [2023-11-19 05:24:45,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:45,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028174378] [2023-11-19 05:24:45,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:45,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:45,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:45,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:24:45,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028174378] [2023-11-19 05:24:45,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028174378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:24:45,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:24:45,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:24:45,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974778884] [2023-11-19 05:24:45,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:24:45,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:24:45,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:24:45,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:24:45,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:24:45,524 INFO L87 Difference]: Start difference. First operand 3939 states and 11087 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:24:45,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:24:45,698 INFO L93 Difference]: Finished difference Result 6543 states and 18540 transitions. [2023-11-19 05:24:45,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:24:45,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 05:24:45,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:24:45,760 INFO L225 Difference]: With dead ends: 6543 [2023-11-19 05:24:45,760 INFO L226 Difference]: Without dead ends: 6543 [2023-11-19 05:24:45,761 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 [2023-11-19 05:24:45,762 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 66 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:24:45,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 79 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:24:45,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6543 states. [2023-11-19 05:24:45,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6543 to 4031. [2023-11-19 05:24:45,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4031 states, 3951 states have (on average 2.903568716780562) internal successors, (11472), 4030 states have internal predecessors, (11472), 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) [2023-11-19 05:24:46,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4031 states to 4031 states and 11472 transitions. [2023-11-19 05:24:46,017 INFO L78 Accepts]: Start accepts. Automaton has 4031 states and 11472 transitions. Word has length 8 [2023-11-19 05:24:46,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:24:46,018 INFO L495 AbstractCegarLoop]: Abstraction has 4031 states and 11472 transitions. [2023-11-19 05:24:46,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:24:46,018 INFO L276 IsEmpty]: Start isEmpty. Operand 4031 states and 11472 transitions. [2023-11-19 05:24:46,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:24:46,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:46,021 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-19 05:24:46,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:24:46,022 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-19 05:24:46,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:46,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1255345623, now seen corresponding path program 1 times [2023-11-19 05:24:46,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:46,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561380890] [2023-11-19 05:24:46,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:46,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:24:46,067 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:24:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:24:46,127 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:24:46,127 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:24:46,131 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2023-11-19 05:24:46,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2023-11-19 05:24:46,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2023-11-19 05:24:46,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2023-11-19 05:24:46,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2023-11-19 05:24:46,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2023-11-19 05:24:46,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2023-11-19 05:24:46,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2023-11-19 05:24:46,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2023-11-19 05:24:46,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2023-11-19 05:24:46,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2023-11-19 05:24:46,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2023-11-19 05:24:46,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2023-11-19 05:24:46,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2023-11-19 05:24:46,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2023-11-19 05:24:46,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2023-11-19 05:24:46,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2023-11-19 05:24:46,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2023-11-19 05:24:46,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 36 remaining) [2023-11-19 05:24:46,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2023-11-19 05:24:46,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2023-11-19 05:24:46,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2023-11-19 05:24:46,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2023-11-19 05:24:46,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2023-11-19 05:24:46,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2023-11-19 05:24:46,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2023-11-19 05:24:46,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2023-11-19 05:24:46,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2023-11-19 05:24:46,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2023-11-19 05:24:46,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2023-11-19 05:24:46,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2023-11-19 05:24:46,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2023-11-19 05:24:46,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2023-11-19 05:24:46,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2023-11-19 05:24:46,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2023-11-19 05:24:46,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2023-11-19 05:24:46,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:24:46,154 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 05:24:46,156 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 05:24:46,156 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 05:24:46,212 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 05:24:46,219 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:24:46,220 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 273 places, 288 transitions, 596 flow [2023-11-19 05:24:46,220 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 273 places, 288 transitions, 596 flow [2023-11-19 05:24:46,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 288 transitions, 596 flow [2023-11-19 05:24:46,288 INFO L124 PetriNetUnfolderBase]: 18/221 cut-off events. [2023-11-19 05:24:46,289 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 05:24:46,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 221 events. 18/221 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 690 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 228. Up to 6 conditions per place. [2023-11-19 05:24:46,314 INFO L119 LiptonReduction]: Number of co-enabled transitions 20700 [2023-11-19 05:24:50,612 INFO L134 LiptonReduction]: Checked pairs total: 161637 [2023-11-19 05:24:50,612 INFO L136 LiptonReduction]: Total number of compositions: 252 [2023-11-19 05:24:50,613 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 123 places, 127 transitions, 274 flow [2023-11-19 05:24:56,315 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 146817 states, 145548 states have (on average 4.124027812130706) internal successors, (600244), 146816 states have internal predecessors, (600244), 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) [2023-11-19 05:24:56,328 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:24:56,329 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;@c238b68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:24:56,329 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-11-19 05:24:56,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 146817 states, 145548 states have (on average 4.124027812130706) internal successors, (600244), 146816 states have internal predecessors, (600244), 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) [2023-11-19 05:24:56,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:24:56,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:56,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:24:56,558 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-11-19 05:24:56,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:56,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1235562346, now seen corresponding path program 1 times [2023-11-19 05:24:56,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:56,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034047797] [2023-11-19 05:24:56,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:56,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:56,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:56,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:24:56,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034047797] [2023-11-19 05:24:56,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034047797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:24:56,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:24:56,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:24:56,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650365199] [2023-11-19 05:24:56,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:24:56,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:24:56,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:24:56,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:24:56,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:24:57,200 INFO L87 Difference]: Start difference. First operand has 146817 states, 145548 states have (on average 4.124027812130706) internal successors, (600244), 146816 states have internal predecessors, (600244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:24:59,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:24:59,652 INFO L93 Difference]: Finished difference Result 124864 states and 487096 transitions. [2023-11-19 05:24:59,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:24:59,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 05:24:59,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:01,628 INFO L225 Difference]: With dead ends: 124864 [2023-11-19 05:25:01,628 INFO L226 Difference]: Without dead ends: 124864 [2023-11-19 05:25:01,629 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 [2023-11-19 05:25:01,637 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 54 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:01,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 130 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:25:02,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124864 states. [2023-11-19 05:25:07,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124864 to 124864. [2023-11-19 05:25:07,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124864 states, 124277 states have (on average 3.9194380295629925) internal successors, (487096), 124863 states have internal predecessors, (487096), 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) [2023-11-19 05:25:08,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124864 states to 124864 states and 487096 transitions. [2023-11-19 05:25:08,882 INFO L78 Accepts]: Start accepts. Automaton has 124864 states and 487096 transitions. Word has length 5 [2023-11-19 05:25:08,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:08,883 INFO L495 AbstractCegarLoop]: Abstraction has 124864 states and 487096 transitions. [2023-11-19 05:25:08,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:08,883 INFO L276 IsEmpty]: Start isEmpty. Operand 124864 states and 487096 transitions. [2023-11-19 05:25:08,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:25:08,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:08,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:25:08,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:25:08,900 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-11-19 05:25:08,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:08,901 INFO L85 PathProgramCache]: Analyzing trace with hash 774262642, now seen corresponding path program 1 times [2023-11-19 05:25:08,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:25:08,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585174966] [2023-11-19 05:25:08,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:08,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:25:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:08,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:25:08,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:25:08,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585174966] [2023-11-19 05:25:08,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585174966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:25:08,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:25:08,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:25:08,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805716531] [2023-11-19 05:25:08,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:08,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:25:08,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:25:08,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:25:08,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:25:08,934 INFO L87 Difference]: Start difference. First operand 124864 states and 487096 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:11,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:11,165 INFO L93 Difference]: Finished difference Result 126300 states and 492556 transitions. [2023-11-19 05:25:11,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:25:11,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 05:25:11,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:11,994 INFO L225 Difference]: With dead ends: 126300 [2023-11-19 05:25:11,994 INFO L226 Difference]: Without dead ends: 126300 [2023-11-19 05:25:11,994 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 [2023-11-19 05:25:11,995 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 54 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:11,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 137 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:25:12,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126300 states. [2023-11-19 05:25:16,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126300 to 126300. [2023-11-19 05:25:16,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126300 states, 125722 states have (on average 3.917818679308315) internal successors, (492556), 126299 states have internal predecessors, (492556), 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) [2023-11-19 05:25:17,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126300 states to 126300 states and 492556 transitions. [2023-11-19 05:25:17,636 INFO L78 Accepts]: Start accepts. Automaton has 126300 states and 492556 transitions. Word has length 8 [2023-11-19 05:25:17,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:17,636 INFO L495 AbstractCegarLoop]: Abstraction has 126300 states and 492556 transitions. [2023-11-19 05:25:17,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:17,638 INFO L276 IsEmpty]: Start isEmpty. Operand 126300 states and 492556 transitions. [2023-11-19 05:25:17,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:25:17,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:17,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:25:17,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:25:17,639 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-11-19 05:25:17,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:17,640 INFO L85 PathProgramCache]: Analyzing trace with hash 2095236812, now seen corresponding path program 1 times [2023-11-19 05:25:17,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:25:17,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925480937] [2023-11-19 05:25:17,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:17,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:25:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:25:17,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:25:17,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925480937] [2023-11-19 05:25:17,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925480937] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:25:17,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:25:17,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:25:17,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376889572] [2023-11-19 05:25:17,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:17,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:25:17,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:25:17,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:25:17,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:25:17,688 INFO L87 Difference]: Start difference. First operand 126300 states and 492556 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:21,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:21,475 INFO L93 Difference]: Finished difference Result 215308 states and 835164 transitions. [2023-11-19 05:25:21,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:25:21,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 05:25:21,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted.