./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2491a1-bcc8-433a-ac25-e5e453002596/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2491a1-bcc8-433a-ac25-e5e453002596/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2491a1-bcc8-433a-ac25-e5e453002596/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2491a1-bcc8-433a-ac25-e5e453002596/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2491a1-bcc8-433a-ac25-e5e453002596/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2491a1-bcc8-433a-ac25-e5e453002596/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:20:40,851 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:20:40,954 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2491a1-bcc8-433a-ac25-e5e453002596/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-11-23 21:20:40,969 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:20:40,972 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:20:41,014 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:20:41,016 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:20:41,017 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:20:41,018 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:20:41,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:20:41,025 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:20:41,025 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:20:41,026 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:20:41,026 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:20:41,027 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:20:41,027 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:20:41,028 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:20:41,028 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:20:41,029 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:20:41,029 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:20:41,030 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:20:41,033 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:20:41,034 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:20:41,035 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:20:41,035 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:20:41,036 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:20:41,036 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:20:41,036 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:20:41,037 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:20:41,037 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:20:41,039 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:20:41,039 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-23 21:20:41,039 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:20:41,040 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:20:41,040 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:20:41,040 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:20:41,041 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:20:41,041 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:20:41,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:20:41,042 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:20:41,043 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:20:41,043 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:20:41,043 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:20:41,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:20:41,044 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:20:41,044 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:20:41,044 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:20:41,045 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:20:41,045 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_fe2491a1-bcc8-433a-ac25-e5e453002596/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2491a1-bcc8-433a-ac25-e5e453002596/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d [2023-11-23 21:20:41,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:20:41,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:20:41,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:20:41,355 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:20:41,356 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:20:41,357 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2491a1-bcc8-433a-ac25-e5e453002596/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2023-11-23 21:20:44,501 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:20:44,751 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:20:44,751 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2491a1-bcc8-433a-ac25-e5e453002596/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2023-11-23 21:20:44,764 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2491a1-bcc8-433a-ac25-e5e453002596/bin/utaipan-verify-mE87zJ7Ire/data/fc1155949/d709669d8e514cf9ac782c35486ce8b5/FLAG3ea007b4f [2023-11-23 21:20:44,783 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2491a1-bcc8-433a-ac25-e5e453002596/bin/utaipan-verify-mE87zJ7Ire/data/fc1155949/d709669d8e514cf9ac782c35486ce8b5 [2023-11-23 21:20:44,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:20:44,787 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:20:44,788 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:20:44,789 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:20:44,794 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:20:44,795 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:20:44" (1/1) ... [2023-11-23 21:20:44,796 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@471c2a55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:44, skipping insertion in model container [2023-11-23 21:20:44,796 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:20:44" (1/1) ... [2023-11-23 21:20:44,824 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:20:45,076 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:20:45,087 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:20:45,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:20:45,146 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:20:45,146 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:20:45,154 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:20:45,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:45 WrapperNode [2023-11-23 21:20:45,155 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:20:45,156 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:20:45,157 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:20:45,157 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:20:45,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:45" (1/1) ... [2023-11-23 21:20:45,176 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:45" (1/1) ... [2023-11-23 21:20:45,229 INFO L138 Inliner]: procedures = 25, calls = 56, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 493 [2023-11-23 21:20:45,229 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:20:45,230 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:20:45,230 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:20:45,230 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:20:45,241 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:45" (1/1) ... [2023-11-23 21:20:45,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:45" (1/1) ... [2023-11-23 21:20:45,249 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:45" (1/1) ... [2023-11-23 21:20:45,249 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:45" (1/1) ... [2023-11-23 21:20:45,272 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:45" (1/1) ... [2023-11-23 21:20:45,278 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:45" (1/1) ... [2023-11-23 21:20:45,281 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:45" (1/1) ... [2023-11-23 21:20:45,284 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:45" (1/1) ... [2023-11-23 21:20:45,290 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:20:45,291 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:20:45,291 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:20:45,291 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:20:45,292 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:45" (1/1) ... [2023-11-23 21:20:45,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:20:45,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2491a1-bcc8-433a-ac25-e5e453002596/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:45,324 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2491a1-bcc8-433a-ac25-e5e453002596/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:20:45,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe2491a1-bcc8-433a-ac25-e5e453002596/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:20:45,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:20:45,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:20:45,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:20:45,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:20:45,380 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-23 21:20:45,380 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-23 21:20:45,381 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-23 21:20:45,381 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-23 21:20:45,381 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-23 21:20:45,381 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-23 21:20:45,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:20:45,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 21:20:45,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 21:20:45,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:20:45,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:20:45,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:20:45,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:20:45,386 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:20:45,567 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:20:45,569 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:20:46,531 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:20:46,965 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:20:46,965 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-23 21:20:46,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:20:46 BoogieIcfgContainer [2023-11-23 21:20:46,968 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:20:46,972 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:20:46,973 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:20:46,977 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:20:46,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:20:44" (1/3) ... [2023-11-23 21:20:46,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50abf27c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:20:46, skipping insertion in model container [2023-11-23 21:20:46,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:45" (2/3) ... [2023-11-23 21:20:46,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50abf27c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:20:46, skipping insertion in model container [2023-11-23 21:20:46,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:20:46" (3/3) ... [2023-11-23 21:20:46,982 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-horseshoe.wvr.c [2023-11-23 21:20:46,992 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 21:20:47,003 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:20:47,004 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2023-11-23 21:20:47,004 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:20:47,117 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-23 21:20:47,156 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 377 places, 385 transitions, 791 flow [2023-11-23 21:20:58,045 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 317405 states, 307274 states have (on average 4.143158874489869) internal successors, (1273085), 317404 states have internal predecessors, (1273085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:58,086 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:20:58,095 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;@3e60b2a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:20:58,096 INFO L358 AbstractCegarLoop]: Starting to check reachability of 122 error locations. [2023-11-23 21:20:58,457 INFO L276 IsEmpty]: Start isEmpty. Operand has 317405 states, 307274 states have (on average 4.143158874489869) internal successors, (1273085), 317404 states have internal predecessors, (1273085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:58,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 21:20:58,464 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:58,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:58,465 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 118 more)] === [2023-11-23 21:20:58,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:58,470 INFO L85 PathProgramCache]: Analyzing trace with hash -2137002153, now seen corresponding path program 1 times [2023-11-23 21:20:58,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:58,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296592355] [2023-11-23 21:20:58,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:58,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:58,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:58,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:58,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296592355] [2023-11-23 21:20:58,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296592355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:58,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:58,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:20:58,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234002685] [2023-11-23 21:20:58,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:58,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:20:58,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:58,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:20:58,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:59,299 INFO L87 Difference]: Start difference. First operand has 317405 states, 307274 states have (on average 4.143158874489869) internal successors, (1273085), 317404 states have internal predecessors, (1273085), 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 14.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:01,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:01,804 INFO L93 Difference]: Finished difference Result 50728 states and 192831 transitions. [2023-11-23 21:21:01,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:21:01,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2023-11-23 21:21:01,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:02,510 INFO L225 Difference]: With dead ends: 50728 [2023-11-23 21:21:02,511 INFO L226 Difference]: Without dead ends: 50723 [2023-11-23 21:21:02,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:02,516 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 2 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:21:02,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 572 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:21:02,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50723 states. [2023-11-23 21:21:05,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50723 to 50723. [2023-11-23 21:21:05,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50723 states, 50659 states have (on average 3.8063522769892812) internal successors, (192826), 50722 states have internal predecessors, (192826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:06,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50723 states to 50723 states and 192826 transitions. [2023-11-23 21:21:06,619 INFO L78 Accepts]: Start accepts. Automaton has 50723 states and 192826 transitions. Word has length 28 [2023-11-23 21:21:06,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:06,621 INFO L495 AbstractCegarLoop]: Abstraction has 50723 states and 192826 transitions. [2023-11-23 21:21:06,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:06,622 INFO L276 IsEmpty]: Start isEmpty. Operand 50723 states and 192826 transitions. [2023-11-23 21:21:06,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-23 21:21:06,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:06,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:06,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:21:06,624 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 118 more)] === [2023-11-23 21:21:06,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:06,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1219930226, now seen corresponding path program 1 times [2023-11-23 21:21:06,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:06,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729564524] [2023-11-23 21:21:06,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:06,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:06,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:21:06,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:06,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729564524] [2023-11-23 21:21:06,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729564524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:06,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:06,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:21:06,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146794824] [2023-11-23 21:21:06,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:06,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:21:06,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:06,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:21:06,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:06,802 INFO L87 Difference]: Start difference. First operand 50723 states and 192826 transitions. Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:07,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:07,466 INFO L93 Difference]: Finished difference Result 56308 states and 214173 transitions. [2023-11-23 21:21:07,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:21:07,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2023-11-23 21:21:07,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:07,906 INFO L225 Difference]: With dead ends: 56308 [2023-11-23 21:21:07,906 INFO L226 Difference]: Without dead ends: 56308 [2023-11-23 21:21:07,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:07,913 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 234 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:21:07,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 391 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:21:08,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56308 states. [2023-11-23 21:21:09,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56308 to 50722. [2023-11-23 21:21:10,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50722 states, 50659 states have (on average 3.806332537160228) internal successors, (192825), 50721 states have internal predecessors, (192825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:10,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50722 states to 50722 states and 192825 transitions. [2023-11-23 21:21:10,939 INFO L78 Accepts]: Start accepts. Automaton has 50722 states and 192825 transitions. Word has length 32 [2023-11-23 21:21:10,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:10,940 INFO L495 AbstractCegarLoop]: Abstraction has 50722 states and 192825 transitions. [2023-11-23 21:21:10,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:10,940 INFO L276 IsEmpty]: Start isEmpty. Operand 50722 states and 192825 transitions. [2023-11-23 21:21:10,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-23 21:21:10,941 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:10,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:10,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:21:10,942 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 118 more)] === [2023-11-23 21:21:10,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:10,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1171383256, now seen corresponding path program 1 times [2023-11-23 21:21:10,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:10,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228480227] [2023-11-23 21:21:10,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:10,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:11,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:21:11,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:11,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228480227] [2023-11-23 21:21:11,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228480227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:11,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:11,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:21:11,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311444814] [2023-11-23 21:21:11,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:11,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:21:11,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:11,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:21:11,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:11,084 INFO L87 Difference]: Start difference. First operand 50722 states and 192825 transitions. Second operand has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:11,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:11,571 INFO L93 Difference]: Finished difference Result 50721 states and 192824 transitions. [2023-11-23 21:21:11,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:21:11,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2023-11-23 21:21:11,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:11,846 INFO L225 Difference]: With dead ends: 50721 [2023-11-23 21:21:11,846 INFO L226 Difference]: Without dead ends: 50721 [2023-11-23 21:21:11,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:11,848 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 1 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:21:11,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 562 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:21:11,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50721 states. [2023-11-23 21:21:13,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50721 to 50721. [2023-11-23 21:21:13,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50721 states, 50659 states have (on average 3.806312797331175) internal successors, (192824), 50720 states have internal predecessors, (192824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:14,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50721 states to 50721 states and 192824 transitions. [2023-11-23 21:21:14,057 INFO L78 Accepts]: Start accepts. Automaton has 50721 states and 192824 transitions. Word has length 36 [2023-11-23 21:21:14,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:14,057 INFO L495 AbstractCegarLoop]: Abstraction has 50721 states and 192824 transitions. [2023-11-23 21:21:14,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:14,058 INFO L276 IsEmpty]: Start isEmpty. Operand 50721 states and 192824 transitions. [2023-11-23 21:21:14,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-23 21:21:14,059 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:14,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:14,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:21:14,060 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 118 more)] === [2023-11-23 21:21:14,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:14,061 INFO L85 PathProgramCache]: Analyzing trace with hash -890983869, now seen corresponding path program 1 times [2023-11-23 21:21:14,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:14,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135672369] [2023-11-23 21:21:14,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:14,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:14,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:21:14,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:14,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135672369] [2023-11-23 21:21:14,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135672369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:14,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:14,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:21:14,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961475920] [2023-11-23 21:21:14,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:14,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:21:14,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:14,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:21:14,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:14,137 INFO L87 Difference]: Start difference. First operand 50721 states and 192824 transitions. Second operand has 3 states, 2 states have (on average 21.5) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:15,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:15,268 INFO L93 Difference]: Finished difference Result 50720 states and 192823 transitions. [2023-11-23 21:21:15,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:21:15,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 21.5) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2023-11-23 21:21:15,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:15,499 INFO L225 Difference]: With dead ends: 50720 [2023-11-23 21:21:15,500 INFO L226 Difference]: Without dead ends: 50720 [2023-11-23 21:21:15,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:15,501 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 2 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:21:15,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 556 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:21:15,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50720 states. [2023-11-23 21:21:17,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50720 to 50720. [2023-11-23 21:21:17,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50720 states, 50659 states have (on average 3.806293057502122) internal successors, (192823), 50719 states have internal predecessors, (192823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:17,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50720 states to 50720 states and 192823 transitions. [2023-11-23 21:21:17,489 INFO L78 Accepts]: Start accepts. Automaton has 50720 states and 192823 transitions. Word has length 43 [2023-11-23 21:21:17,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:17,489 INFO L495 AbstractCegarLoop]: Abstraction has 50720 states and 192823 transitions. [2023-11-23 21:21:17,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 21.5) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:17,490 INFO L276 IsEmpty]: Start isEmpty. Operand 50720 states and 192823 transitions. [2023-11-23 21:21:17,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-23 21:21:17,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:17,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:17,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:21:17,492 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 118 more)] === [2023-11-23 21:21:17,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:17,492 INFO L85 PathProgramCache]: Analyzing trace with hash 449026527, now seen corresponding path program 1 times [2023-11-23 21:21:17,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:17,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20798314] [2023-11-23 21:21:17,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:17,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:17,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:21:17,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:17,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20798314] [2023-11-23 21:21:17,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20798314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:17,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:17,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:21:17,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584480462] [2023-11-23 21:21:17,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:17,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:21:17,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:17,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:21:17,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:17,541 INFO L87 Difference]: Start difference. First operand 50720 states and 192823 transitions. Second operand has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:18,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:18,778 INFO L93 Difference]: Finished difference Result 56461 states and 214890 transitions. [2023-11-23 21:21:18,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:21:18,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 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 47 [2023-11-23 21:21:18,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:19,106 INFO L225 Difference]: With dead ends: 56461 [2023-11-23 21:21:19,106 INFO L226 Difference]: Without dead ends: 56461 [2023-11-23 21:21:19,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:19,109 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 226 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:21:19,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 398 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:21:19,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56461 states. [2023-11-23 21:21:21,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56461 to 50719. [2023-11-23 21:21:21,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50719 states, 50659 states have (on average 3.8062733176730688) internal successors, (192822), 50718 states have internal predecessors, (192822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:21,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50719 states to 50719 states and 192822 transitions. [2023-11-23 21:21:21,565 INFO L78 Accepts]: Start accepts. Automaton has 50719 states and 192822 transitions. Word has length 47 [2023-11-23 21:21:21,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:21,566 INFO L495 AbstractCegarLoop]: Abstraction has 50719 states and 192822 transitions. [2023-11-23 21:21:21,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:21,566 INFO L276 IsEmpty]: Start isEmpty. Operand 50719 states and 192822 transitions. [2023-11-23 21:21:21,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:21:21,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:21,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:21,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:21:21,567 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 118 more)] === [2023-11-23 21:21:21,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:21,568 INFO L85 PathProgramCache]: Analyzing trace with hash 2087879914, now seen corresponding path program 1 times [2023-11-23 21:21:21,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:21,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484732407] [2023-11-23 21:21:21,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:21,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:21,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:21:21,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:21,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484732407] [2023-11-23 21:21:21,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484732407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:21,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:21,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:21:21,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443078360] [2023-11-23 21:21:21,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:21,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:21:21,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:21,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:21:21,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:21,674 INFO L87 Difference]: Start difference. First operand 50719 states and 192822 transitions. Second operand has 3 states, 2 states have (on average 25.5) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:22,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:22,052 INFO L93 Difference]: Finished difference Result 50718 states and 192821 transitions. [2023-11-23 21:21:22,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:21:22,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 25.5) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2023-11-23 21:21:22,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:22,334 INFO L225 Difference]: With dead ends: 50718 [2023-11-23 21:21:22,334 INFO L226 Difference]: Without dead ends: 50718 [2023-11-23 21:21:22,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:22,336 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 1 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:21:22,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 556 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:21:23,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50718 states. [2023-11-23 21:21:24,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50718 to 50718. [2023-11-23 21:21:24,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50718 states, 50659 states have (on average 3.806253577844016) internal successors, (192821), 50717 states have internal predecessors, (192821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:25,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50718 states to 50718 states and 192821 transitions. [2023-11-23 21:21:25,260 INFO L78 Accepts]: Start accepts. Automaton has 50718 states and 192821 transitions. Word has length 51 [2023-11-23 21:21:25,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:25,261 INFO L495 AbstractCegarLoop]: Abstraction has 50718 states and 192821 transitions. [2023-11-23 21:21:25,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 25.5) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:25,262 INFO L276 IsEmpty]: Start isEmpty. Operand 50718 states and 192821 transitions. [2023-11-23 21:21:25,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-23 21:21:25,277 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:25,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:25,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:21:25,278 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 118 more)] === [2023-11-23 21:21:25,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:25,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1229511477, now seen corresponding path program 1 times [2023-11-23 21:21:25,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:25,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229808246] [2023-11-23 21:21:25,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:25,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:25,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:21:25,346 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:25,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229808246] [2023-11-23 21:21:25,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229808246] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:25,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:25,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:21:25,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56338833] [2023-11-23 21:21:25,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:25,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:21:25,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:25,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:21:25,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:25,349 INFO L87 Difference]: Start difference. First operand 50718 states and 192821 transitions. Second operand has 3 states, 2 states have (on average 29.0) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:25,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:25,773 INFO L93 Difference]: Finished difference Result 50717 states and 192820 transitions. [2023-11-23 21:21:25,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:21:25,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 29.0) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2023-11-23 21:21:25,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:26,089 INFO L225 Difference]: With dead ends: 50717 [2023-11-23 21:21:26,089 INFO L226 Difference]: Without dead ends: 50717 [2023-11-23 21:21:26,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:26,093 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 2 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:21:26,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 550 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:21:26,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50717 states. [2023-11-23 21:21:28,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50717 to 50717. [2023-11-23 21:21:28,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50717 states, 50659 states have (on average 3.806233838014963) internal successors, (192820), 50716 states have internal predecessors, (192820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:28,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50717 states to 50717 states and 192820 transitions. [2023-11-23 21:21:28,401 INFO L78 Accepts]: Start accepts. Automaton has 50717 states and 192820 transitions. Word has length 58 [2023-11-23 21:21:28,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:28,402 INFO L495 AbstractCegarLoop]: Abstraction has 50717 states and 192820 transitions. [2023-11-23 21:21:28,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 29.0) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:28,402 INFO L276 IsEmpty]: Start isEmpty. Operand 50717 states and 192820 transitions. [2023-11-23 21:21:28,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-23 21:21:28,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:28,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:28,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:21:28,404 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 118 more)] === [2023-11-23 21:21:28,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:28,404 INFO L85 PathProgramCache]: Analyzing trace with hash 2023925892, now seen corresponding path program 1 times [2023-11-23 21:21:28,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:28,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641751039] [2023-11-23 21:21:28,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:28,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:28,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:21:28,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:28,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641751039] [2023-11-23 21:21:28,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641751039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:28,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:28,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:21:28,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073940369] [2023-11-23 21:21:28,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:28,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:21:28,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:28,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:21:28,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:28,471 INFO L87 Difference]: Start difference. First operand 50717 states and 192820 transitions. Second operand has 3 states, 2 states have (on average 31.0) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:29,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:29,686 INFO L93 Difference]: Finished difference Result 50716 states and 192819 transitions. [2023-11-23 21:21:29,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:21:29,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 31.0) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2023-11-23 21:21:29,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted.