./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/twostage_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version a0165632 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_38a71ff4-a40e-4ca0-b0c2-060293446c62/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38a71ff4-a40e-4ca0-b0c2-060293446c62/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38a71ff4-a40e-4ca0-b0c2-060293446c62/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38a71ff4-a40e-4ca0-b0c2-060293446c62/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/twostage_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38a71ff4-a40e-4ca0-b0c2-060293446c62/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38a71ff4-a40e-4ca0-b0c2-060293446c62/bin/utaipan-verify-YMUCfTKeje --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 1032ef3fe166161226ca7e81ea27802cfc3f516ad1e4b45c387461fe1ddeccf8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:50:09,137 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:50:09,229 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38a71ff4-a40e-4ca0-b0c2-060293446c62/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DataRace-32bit-Taipan_Default.epf [2024-11-09 05:50:09,233 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:50:09,234 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:50:09,272 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:50:09,273 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:50:09,273 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:50:09,274 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:50:09,274 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:50:09,275 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:50:09,276 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:50:09,277 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:50:09,279 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:50:09,279 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:50:09,279 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:50:09,280 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:50:09,280 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:50:09,281 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:50:09,285 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:50:09,285 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:50:09,286 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:50:09,286 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:50:09,287 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:50:09,287 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:50:09,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:50:09,288 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:50:09,288 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:50:09,288 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:50:09,288 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:50:09,290 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:50:09,290 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-09 05:50:09,291 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:50:09,291 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 05:50:09,291 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:50:09,291 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:50:09,292 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:50:09,292 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:50:09,292 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:50:09,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:50:09,293 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:50:09,294 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:50:09,295 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:50:09,295 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:50:09,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:50:09,296 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:50:09,296 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:50:09,296 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:50:09,296 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_38a71ff4-a40e-4ca0-b0c2-060293446c62/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38a71ff4-a40e-4ca0-b0c2-060293446c62/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1032ef3fe166161226ca7e81ea27802cfc3f516ad1e4b45c387461fe1ddeccf8 [2024-11-09 05:50:09,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:50:09,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:50:09,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:50:09,567 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:50:09,568 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:50:09,569 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38a71ff4-a40e-4ca0-b0c2-060293446c62/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/pthread/twostage_3.i Unable to find full path for "g++" [2024-11-09 05:50:11,703 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:50:12,145 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:50:12,146 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38a71ff4-a40e-4ca0-b0c2-060293446c62/sv-benchmarks/c/pthread/twostage_3.i [2024-11-09 05:50:12,175 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38a71ff4-a40e-4ca0-b0c2-060293446c62/bin/utaipan-verify-YMUCfTKeje/data/0f4ff3253/8429db75c508412199d1974077110c82/FLAGb82eeabcf [2024-11-09 05:50:12,195 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38a71ff4-a40e-4ca0-b0c2-060293446c62/bin/utaipan-verify-YMUCfTKeje/data/0f4ff3253/8429db75c508412199d1974077110c82 [2024-11-09 05:50:12,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:50:12,202 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:50:12,205 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:50:12,205 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:50:12,211 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:50:12,212 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:50:12" (1/1) ... [2024-11-09 05:50:12,213 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74b30466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:12, skipping insertion in model container [2024-11-09 05:50:12,213 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:50:12" (1/1) ... [2024-11-09 05:50:12,285 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:50:13,221 WARN L1698 CHandler]: Possible shadowing of function lock [2024-11-09 05:50:13,222 WARN L1698 CHandler]: Possible shadowing of function lock [2024-11-09 05:50:13,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:50:13,237 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:50:13,317 WARN L1698 CHandler]: Possible shadowing of function lock [2024-11-09 05:50:13,319 WARN L1698 CHandler]: Possible shadowing of function lock [2024-11-09 05:50:13,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:50:13,434 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:50:13,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:13 WrapperNode [2024-11-09 05:50:13,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:50:13,436 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:50:13,436 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:50:13,436 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:50:13,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:13" (1/1) ... [2024-11-09 05:50:13,487 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:13" (1/1) ... [2024-11-09 05:50:13,546 INFO L138 Inliner]: procedures = 373, calls = 34, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 272 [2024-11-09 05:50:13,547 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:50:13,548 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:50:13,548 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:50:13,548 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:50:13,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:13" (1/1) ... [2024-11-09 05:50:13,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:13" (1/1) ... [2024-11-09 05:50:13,572 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:13" (1/1) ... [2024-11-09 05:50:13,576 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:13" (1/1) ... [2024-11-09 05:50:13,599 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:13" (1/1) ... [2024-11-09 05:50:13,606 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:13" (1/1) ... [2024-11-09 05:50:13,612 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:13" (1/1) ... [2024-11-09 05:50:13,617 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:13" (1/1) ... [2024-11-09 05:50:13,621 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:50:13,625 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:50:13,625 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:50:13,625 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:50:13,626 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:13" (1/1) ... [2024-11-09 05:50:13,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:50:13,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38a71ff4-a40e-4ca0-b0c2-060293446c62/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:50:13,667 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38a71ff4-a40e-4ca0-b0c2-060293446c62/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:50:13,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38a71ff4-a40e-4ca0-b0c2-060293446c62/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:50:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure funcA [2024-11-09 05:50:13,709 INFO L138 BoogieDeclarations]: Found implementation of procedure funcA [2024-11-09 05:50:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure funcB [2024-11-09 05:50:13,710 INFO L138 BoogieDeclarations]: Found implementation of procedure funcB [2024-11-09 05:50:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 05:50:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 05:50:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 05:50:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 05:50:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 05:50:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 05:50:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 05:50:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:50:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:50:13,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:50:13,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:50:13,715 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 05:50:13,932 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:50:13,934 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:50:14,558 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 05:50:14,558 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:50:14,611 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:50:14,612 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 05:50:14,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:50:14 BoogieIcfgContainer [2024-11-09 05:50:14,615 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:50:14,618 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:50:14,619 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:50:14,622 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:50:14,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:50:12" (1/3) ... [2024-11-09 05:50:14,624 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bae22f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:50:14, skipping insertion in model container [2024-11-09 05:50:14,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:13" (2/3) ... [2024-11-09 05:50:14,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bae22f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:50:14, skipping insertion in model container [2024-11-09 05:50:14,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:50:14" (3/3) ... [2024-11-09 05:50:14,627 INFO L112 eAbstractionObserver]: Analyzing ICFG twostage_3.i [2024-11-09 05:50:14,648 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:50:14,651 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2024-11-09 05:50:14,651 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 05:50:14,766 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-09 05:50:14,820 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 353 places, 369 transitions, 758 flow [2024-11-09 05:50:22,266 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 204628 states, 203263 states have (on average 3.026625603282447) internal successors, (615201), 204627 states have internal predecessors, (615201), 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) [2024-11-09 05:50:22,310 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:50:22,319 INFO L333 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, 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;@77181408, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:50:22,320 INFO L334 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2024-11-09 05:50:22,614 INFO L276 IsEmpty]: Start isEmpty. Operand has 204628 states, 203263 states have (on average 3.026625603282447) internal successors, (615201), 204627 states have internal predecessors, (615201), 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) [2024-11-09 05:50:22,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 05:50:22,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:50:22,624 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:50:22,625 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [funcAErr0ASSERT_VIOLATIONDATA_RACE, funcAErr1ASSERT_VIOLATIONDATA_RACE, funcAErr2ASSERT_VIOLATIONDATA_RACE, funcAErr3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2024-11-09 05:50:22,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:50:22,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1250623025, now seen corresponding path program 1 times [2024-11-09 05:50:22,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:50:22,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122493497] [2024-11-09 05:50:22,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:22,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:50:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:22,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:50:22,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:50:22,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122493497] [2024-11-09 05:50:22,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122493497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:50:23,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:50:23,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:50:23,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272681692] [2024-11-09 05:50:23,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:50:23,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:50:23,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:50:23,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:50:23,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:50:23,352 INFO L87 Difference]: Start difference. First operand has 204628 states, 203263 states have (on average 3.026625603282447) internal successors, (615201), 204627 states have internal predecessors, (615201), 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 10.5) internal successors, (21), 3 states have internal predecessors, (21), 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) [2024-11-09 05:50:31,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:50:31,168 INFO L93 Difference]: Finished difference Result 399114 states and 1203062 transitions. [2024-11-09 05:50:31,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:50:31,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2024-11-09 05:50:31,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:50:33,221 INFO L225 Difference]: With dead ends: 399114 [2024-11-09 05:50:33,221 INFO L226 Difference]: Without dead ends: 193676 [2024-11-09 05:50:33,563 INFO L431 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 [2024-11-09 05:50:33,567 INFO L432 NwaCegarLoop]: 328 mSDtfsCounter, 292 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:50:33,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 378 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:50:34,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193676 states. [2024-11-09 05:50:40,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193676 to 193676. [2024-11-09 05:50:41,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193676 states, 192182 states have (on average 2.93496269161524) internal successors, (564047), 193675 states have internal predecessors, (564047), 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) [2024-11-09 05:50:42,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193676 states to 193676 states and 564047 transitions. [2024-11-09 05:50:43,846 INFO L78 Accepts]: Start accepts. Automaton has 193676 states and 564047 transitions. Word has length 21 [2024-11-09 05:50:43,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:50:43,847 INFO L471 AbstractCegarLoop]: Abstraction has 193676 states and 564047 transitions. [2024-11-09 05:50:43,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 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) [2024-11-09 05:50:43,848 INFO L276 IsEmpty]: Start isEmpty. Operand 193676 states and 564047 transitions. [2024-11-09 05:50:43,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 05:50:43,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:50:43,849 INFO L215 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] [2024-11-09 05:50:43,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:50:43,851 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [funcAErr0ASSERT_VIOLATIONDATA_RACE, funcAErr1ASSERT_VIOLATIONDATA_RACE, funcAErr2ASSERT_VIOLATIONDATA_RACE, funcAErr3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2024-11-09 05:50:43,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:50:43,852 INFO L85 PathProgramCache]: Analyzing trace with hash -114479350, now seen corresponding path program 1 times [2024-11-09 05:50:43,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:50:43,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273347358] [2024-11-09 05:50:43,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:43,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:50:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:44,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:50:44,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:50:44,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273347358] [2024-11-09 05:50:44,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273347358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:50:44,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:50:44,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:50:44,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682255082] [2024-11-09 05:50:44,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:50:44,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:50:44,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:50:44,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:50:44,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:50:44,042 INFO L87 Difference]: Start difference. First operand 193676 states and 564047 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-09 05:50:49,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:50:49,065 INFO L93 Difference]: Finished difference Result 387302 states and 1128043 transitions. [2024-11-09 05:50:49,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:50:49,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2024-11-09 05:50:49,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:50:52,824 INFO L225 Difference]: With dead ends: 387302 [2024-11-09 05:50:52,824 INFO L226 Difference]: Without dead ends: 387301 [2024-11-09 05:50:52,970 INFO L431 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 [2024-11-09 05:50:52,972 INFO L432 NwaCegarLoop]: 592 mSDtfsCounter, 313 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:50:52,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 890 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:50:53,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387301 states. [2024-11-09 05:51:01,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387301 to 193675. [2024-11-09 05:51:01,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193675 states, 192182 states have (on average 2.934957488214297) internal successors, (564046), 193674 states have internal predecessors, (564046), 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) [2024-11-09 05:51:02,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193675 states to 193675 states and 564046 transitions. [2024-11-09 05:51:03,626 INFO L78 Accepts]: Start accepts. Automaton has 193675 states and 564046 transitions. Word has length 22 [2024-11-09 05:51:03,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:51:03,627 INFO L471 AbstractCegarLoop]: Abstraction has 193675 states and 564046 transitions. [2024-11-09 05:51:03,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-09 05:51:03,628 INFO L276 IsEmpty]: Start isEmpty. Operand 193675 states and 564046 transitions. [2024-11-09 05:51:03,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 05:51:03,629 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:51:03,629 INFO L215 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] [2024-11-09 05:51:03,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:51:03,630 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [funcAErr0ASSERT_VIOLATIONDATA_RACE, funcAErr1ASSERT_VIOLATIONDATA_RACE, funcAErr2ASSERT_VIOLATIONDATA_RACE, funcAErr3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2024-11-09 05:51:03,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:51:03,631 INFO L85 PathProgramCache]: Analyzing trace with hash 746072202, now seen corresponding path program 1 times [2024-11-09 05:51:03,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:51:03,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068968364] [2024-11-09 05:51:03,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:51:03,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:51:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:51:03,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:51:03,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:51:03,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068968364] [2024-11-09 05:51:03,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068968364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:51:03,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:51:03,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:51:03,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361939016] [2024-11-09 05:51:03,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:51:03,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:51:03,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:51:03,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:51:03,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:51:03,697 INFO L87 Difference]: Start difference. First operand 193675 states and 564046 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 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) [2024-11-09 05:51:07,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:51:07,333 INFO L93 Difference]: Finished difference Result 193675 states and 564046 transitions. [2024-11-09 05:51:07,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:51:07,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2024-11-09 05:51:07,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:51:08,456 INFO L225 Difference]: With dead ends: 193675 [2024-11-09 05:51:08,457 INFO L226 Difference]: Without dead ends: 185894 [2024-11-09 05:51:08,523 INFO L431 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 [2024-11-09 05:51:08,524 INFO L432 NwaCegarLoop]: 481 mSDtfsCounter, 192 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:51:08,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 776 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:51:08,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185894 states.