./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/thread-local-value-race.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version cf1a7837 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_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/thread-local-value-race.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX --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 7ed1d3b0e4e2dcb24c2f8434bdd31da5e0bc2d00338c37a58d169ecec68bbec4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:43:14,283 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:43:14,385 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-11-12 00:43:14,392 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:43:14,392 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:43:14,423 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:43:14,424 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:43:14,425 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:43:14,426 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:43:14,426 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:43:14,427 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:43:14,428 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:43:14,428 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:43:14,429 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:43:14,429 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:43:14,430 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:43:14,430 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:43:14,431 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:43:14,432 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:43:14,432 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:43:14,433 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:43:14,434 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:43:14,434 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:43:14,435 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:43:14,436 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:43:14,436 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:43:14,437 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:43:14,437 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:43:14,438 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:43:14,438 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:43:14,439 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:43:14,440 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-12 00:43:14,440 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:43:14,441 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:43:14,441 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:43:14,442 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:43:14,442 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:43:14,443 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:43:14,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:43:14,444 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:43:14,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:43:14,445 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:43:14,446 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:43:14,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:43:14,447 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:43:14,447 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:43:14,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:43:14,448 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_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ed1d3b0e4e2dcb24c2f8434bdd31da5e0bc2d00338c37a58d169ecec68bbec4 [2023-11-12 00:43:14,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:43:14,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:43:14,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:43:14,753 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:43:14,753 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:43:14,755 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/pthread-race-challenges/thread-local-value-race.i [2023-11-12 00:43:18,011 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:43:18,422 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:43:18,423 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/sv-benchmarks/c/pthread-race-challenges/thread-local-value-race.i [2023-11-12 00:43:18,444 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX/data/07543d536/f0668b42ef894ceba2d612b379b0daf9/FLAG4a6943ab1 [2023-11-12 00:43:18,463 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX/data/07543d536/f0668b42ef894ceba2d612b379b0daf9 [2023-11-12 00:43:18,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:43:18,468 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:43:18,469 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:43:18,470 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:43:18,475 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:43:18,476 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:43:18" (1/1) ... [2023-11-12 00:43:18,477 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53e4f4d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:18, skipping insertion in model container [2023-11-12 00:43:18,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:43:18" (1/1) ... [2023-11-12 00:43:18,532 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:43:18,769 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:43:19,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:43:19,191 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:43:19,219 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:43:19,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:43:19,327 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:43:19,335 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:43:19,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:19 WrapperNode [2023-11-12 00:43:19,336 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:43:19,337 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:43:19,337 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:43:19,338 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:43:19,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:19" (1/1) ... [2023-11-12 00:43:19,381 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:19" (1/1) ... [2023-11-12 00:43:19,432 INFO L138 Inliner]: procedures = 274, calls = 33, calls flagged for inlining = 4, calls inlined = 3, statements flattened = 91 [2023-11-12 00:43:19,434 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:43:19,435 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:43:19,435 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:43:19,435 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:43:19,445 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:19" (1/1) ... [2023-11-12 00:43:19,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:19" (1/1) ... [2023-11-12 00:43:19,463 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:19" (1/1) ... [2023-11-12 00:43:19,464 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:19" (1/1) ... [2023-11-12 00:43:19,481 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:19" (1/1) ... [2023-11-12 00:43:19,491 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:19" (1/1) ... [2023-11-12 00:43:19,494 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:19" (1/1) ... [2023-11-12 00:43:19,495 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:19" (1/1) ... [2023-11-12 00:43:19,499 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:43:19,500 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:43:19,501 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:43:19,502 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:43:19,503 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:19" (1/1) ... [2023-11-12 00:43:19,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:43:19,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:43:19,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:43:19,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:43:19,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:43:19,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:43:19,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:43:19,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:43:19,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:43:19,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:43:19,599 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 00:43:19,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:43:19,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:43:19,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:43:19,600 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-12 00:43:19,600 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-12 00:43:19,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:43:19,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:43:19,602 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 00:43:19,756 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:43:19,758 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:43:20,050 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:43:20,058 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:43:20,059 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-12 00:43:20,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:43:20 BoogieIcfgContainer [2023-11-12 00:43:20,062 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:43:20,064 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:43:20,065 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:43:20,068 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:43:20,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:43:18" (1/3) ... [2023-11-12 00:43:20,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf3c5ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:43:20, skipping insertion in model container [2023-11-12 00:43:20,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:19" (2/3) ... [2023-11-12 00:43:20,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf3c5ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:43:20, skipping insertion in model container [2023-11-12 00:43:20,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:43:20" (3/3) ... [2023-11-12 00:43:20,072 INFO L112 eAbstractionObserver]: Analyzing ICFG thread-local-value-race.i [2023-11-12 00:43:20,081 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 00:43:20,093 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:43:20,093 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-12 00:43:20,093 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:43:20,216 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-12 00:43:20,252 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:43:20,272 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 137 transitions, 281 flow [2023-11-12 00:43:20,275 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 137 transitions, 281 flow [2023-11-12 00:43:20,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 137 transitions, 281 flow [2023-11-12 00:43:20,425 INFO L124 PetriNetUnfolderBase]: 8/185 cut-off events. [2023-11-12 00:43:20,426 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 00:43:20,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 185 events. 8/185 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 381 event pairs, 0 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 93. Up to 4 conditions per place. [2023-11-12 00:43:20,439 INFO L119 LiptonReduction]: Number of co-enabled transitions 4290 [2023-11-12 00:43:45,443 INFO L134 LiptonReduction]: Checked pairs total: 19189 [2023-11-12 00:43:45,443 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-11-12 00:43:45,459 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 53 transitions, 113 flow [2023-11-12 00:43:45,530 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 593 states, 554 states have (on average 2.0541516245487363) internal successors, (1138), 592 states have internal predecessors, (1138), 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) [2023-11-12 00:43:45,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:43:45,557 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;@19e3d27b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:43:45,557 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-12 00:43:45,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 593 states, 554 states have (on average 2.0541516245487363) internal successors, (1138), 592 states have internal predecessors, (1138), 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) [2023-11-12 00:43:45,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:43:45,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:45,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:45,569 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-12 00:43:45,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:45,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1082848625, now seen corresponding path program 1 times [2023-11-12 00:43:45,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:45,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853886754] [2023-11-12 00:43:45,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:45,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:46,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:46,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:46,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853886754] [2023-11-12 00:43:46,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853886754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:46,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:46,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:43:46,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933944297] [2023-11-12 00:43:46,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:46,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:43:46,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:46,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:43:46,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:46,472 INFO L87 Difference]: Start difference. First operand has 593 states, 554 states have (on average 2.0541516245487363) internal successors, (1138), 592 states have internal predecessors, (1138), 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 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 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) [2023-11-12 00:43:47,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:47,052 INFO L93 Difference]: Finished difference Result 760 states and 1454 transitions. [2023-11-12 00:43:47,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:43:47,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 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 7 [2023-11-12 00:43:47,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:47,081 INFO L225 Difference]: With dead ends: 760 [2023-11-12 00:43:47,081 INFO L226 Difference]: Without dead ends: 754 [2023-11-12 00:43:47,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:47,087 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 48 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:47,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 24 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 00:43:47,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-11-12 00:43:47,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 622. [2023-11-12 00:43:47,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 607 states have (on average 1.9901153212520593) internal successors, (1208), 621 states have internal predecessors, (1208), 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) [2023-11-12 00:43:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1208 transitions. [2023-11-12 00:43:47,187 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1208 transitions. Word has length 7 [2023-11-12 00:43:47,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:47,188 INFO L495 AbstractCegarLoop]: Abstraction has 622 states and 1208 transitions. [2023-11-12 00:43:47,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 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) [2023-11-12 00:43:47,189 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1208 transitions. [2023-11-12 00:43:47,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 00:43:47,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:47,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:47,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:43:47,191 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-12 00:43:47,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:47,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2058457121, now seen corresponding path program 1 times [2023-11-12 00:43:47,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:47,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076329437] [2023-11-12 00:43:47,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:47,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:47,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:47,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:47,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076329437] [2023-11-12 00:43:47,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076329437] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:47,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:47,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:43:47,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774460664] [2023-11-12 00:43:47,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:47,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:43:47,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:47,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:43:47,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:47,637 INFO L87 Difference]: Start difference. First operand 622 states and 1208 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2023-11-12 00:43:48,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:48,008 INFO L93 Difference]: Finished difference Result 679 states and 1311 transitions. [2023-11-12 00:43:48,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:43:48,010 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 14 [2023-11-12 00:43:48,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:48,016 INFO L225 Difference]: With dead ends: 679 [2023-11-12 00:43:48,016 INFO L226 Difference]: Without dead ends: 667 [2023-11-12 00:43:48,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:48,018 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 26 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:48,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 36 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:43:48,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2023-11-12 00:43:48,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 655. [2023-11-12 00:43:48,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 641 states have (on average 2.0078003120124803) internal successors, (1287), 654 states have internal predecessors, (1287), 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) [2023-11-12 00:43:48,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1287 transitions. [2023-11-12 00:43:48,068 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1287 transitions. Word has length 14 [2023-11-12 00:43:48,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:48,068 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 1287 transitions. [2023-11-12 00:43:48,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2023-11-12 00:43:48,069 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1287 transitions. [2023-11-12 00:43:48,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-12 00:43:48,070 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:48,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:48,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:43:48,071 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-12 00:43:48,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:48,072 INFO L85 PathProgramCache]: Analyzing trace with hash 786032491, now seen corresponding path program 1 times [2023-11-12 00:43:48,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:48,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588624764] [2023-11-12 00:43:48,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:48,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:48,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:48,472 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:48,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588624764] [2023-11-12 00:43:48,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588624764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:48,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:48,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:43:48,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330791773] [2023-11-12 00:43:48,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:48,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:43:48,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:48,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:43:48,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:48,484 INFO L87 Difference]: Start difference. First operand 655 states and 1287 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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) [2023-11-12 00:43:48,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:48,982 INFO L93 Difference]: Finished difference Result 753 states and 1469 transitions. [2023-11-12 00:43:48,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:43:48,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 15 [2023-11-12 00:43:48,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:48,990 INFO L225 Difference]: With dead ends: 753 [2023-11-12 00:43:48,991 INFO L226 Difference]: Without dead ends: 753 [2023-11-12 00:43:48,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:48,997 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 64 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:48,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 60 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 00:43:49,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2023-11-12 00:43:49,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2023-11-12 00:43:49,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 739 states have (on average 1.9878213802435725) internal successors, (1469), 752 states have internal predecessors, (1469), 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) [2023-11-12 00:43:49,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1469 transitions. [2023-11-12 00:43:49,034 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1469 transitions. Word has length 15 [2023-11-12 00:43:49,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:49,034 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1469 transitions. [2023-11-12 00:43:49,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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) [2023-11-12 00:43:49,036 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1469 transitions. [2023-11-12 00:43:49,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-12 00:43:49,045 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:49,045 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:49,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:43:49,045 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-12 00:43:49,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:49,046 INFO L85 PathProgramCache]: Analyzing trace with hash 300788996, now seen corresponding path program 1 times [2023-11-12 00:43:49,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:49,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144253264] [2023-11-12 00:43:49,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:49,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:49,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:49,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144253264] [2023-11-12 00:43:49,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144253264] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:43:49,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798906624] [2023-11-12 00:43:49,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:49,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:49,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:43:49,957 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:43:49,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:43:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:50,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-12 00:43:50,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:43:50,186 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-12 00:43:50,188 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-12 00:43:50,352 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-12 00:43:50,401 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-12 00:43:50,458 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-11-12 00:43:50,530 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-11-12 00:43:50,648 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 26 [2023-11-12 00:43:50,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:50,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:43:50,908 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~ptr~0.offset 3))) (let ((.cse0 (store |c_#race| c_~ptr~0.base (store (select |c_#race| c_~ptr~0.base) .cse1 |c_threadThread1of1ForFork0_#t~nondet7|)))) (and (forall ((v_ArrVal_146 (Array Int Int))) (= |c_threadThread1of1ForFork0_#t~nondet7| (select (select (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_146) c_~ptr~0.base) .cse1))) (forall ((v_ArrVal_146 (Array Int Int))) (= |c_threadThread1of1ForFork0_#t~nondet7| (select (select (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_146) c_~ptr~0.base) (+ c_~ptr~0.offset 1)))) (forall ((v_ArrVal_146 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_146) c_~ptr~0.base) c_~ptr~0.offset) |c_threadThread1of1ForFork0_#t~nondet7|)) (forall ((v_ArrVal_146 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_146) c_~ptr~0.base) (+ c_~ptr~0.offset 2)) |c_threadThread1of1ForFork0_#t~nondet7|))))) is different from false [2023-11-12 00:43:50,937 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~ptr~0.offset 2)) (.cse1 (+ c_~ptr~0.offset 3))) (let ((.cse0 (store |c_#race| c_~ptr~0.base (store (store (select |c_#race| c_~ptr~0.base) .cse2 |c_threadThread1of1ForFork0_#t~nondet7|) .cse1 |c_threadThread1of1ForFork0_#t~nondet7|)))) (and (forall ((v_ArrVal_146 (Array Int Int))) (= |c_threadThread1of1ForFork0_#t~nondet7| (select (select (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_146) c_~ptr~0.base) .cse1))) (forall ((v_ArrVal_146 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_146) c_~ptr~0.base) .cse2) |c_threadThread1of1ForFork0_#t~nondet7|)) (forall ((v_ArrVal_146 (Array Int Int))) (= |c_threadThread1of1ForFork0_#t~nondet7| (select (select (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_146) c_~ptr~0.base) c_~ptr~0.offset))) (forall ((v_ArrVal_146 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_146) c_~ptr~0.base) (+ c_~ptr~0.offset 1)) |c_threadThread1of1ForFork0_#t~nondet7|))))) is different from false [2023-11-12 00:43:51,049 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 00:43:51,050 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 49 [2023-11-12 00:43:51,059 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 00:43:51,060 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 26 [2023-11-12 00:43:51,071 INFO L322 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-12 00:43:51,071 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 1 [2023-11-12 00:43:51,078 INFO L322 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-12 00:43:51,079 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 1 [2023-11-12 00:43:51,086 INFO L322 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-12 00:43:51,086 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 1 [2023-11-12 00:43:51,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:51,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798906624] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:43:51,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1448088835] [2023-11-12 00:43:51,159 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-12 00:43:51,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:43:51,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-11-12 00:43:51,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268757895] [2023-11-12 00:43:51,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:43:51,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-12 00:43:51,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:51,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-12 00:43:51,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=284, Unknown=14, NotChecked=74, Total=462 [2023-11-12 00:43:51,164 INFO L87 Difference]: Start difference. First operand 753 states and 1469 transitions. Second operand has 22 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 21 states have internal predecessors, (53), 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) [2023-11-12 00:43:52,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:52,920 INFO L93 Difference]: Finished difference Result 723 states and 1408 transitions. [2023-11-12 00:43:52,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:43:52,921 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 21 states have internal predecessors, (53), 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 18 [2023-11-12 00:43:52,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:52,927 INFO L225 Difference]: With dead ends: 723 [2023-11-12 00:43:52,928 INFO L226 Difference]: Without dead ends: 723 [2023-11-12 00:43:52,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=179, Invalid=463, Unknown=16, NotChecked=98, Total=756 [2023-11-12 00:43:52,929 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 270 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 1867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 444 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:52,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 159 Invalid, 1867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1314 Invalid, 0 Unknown, 444 Unchecked, 1.4s Time] [2023-11-12 00:43:52,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2023-11-12 00:43:52,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 647. [2023-11-12 00:43:52,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 637 states have (on average 1.9858712715855573) internal successors, (1265), 646 states have internal predecessors, (1265), 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) [2023-11-12 00:43:52,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1265 transitions. [2023-11-12 00:43:52,957 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1265 transitions. Word has length 18 [2023-11-12 00:43:52,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:52,957 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 1265 transitions. [2023-11-12 00:43:52,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 21 states have internal predecessors, (53), 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) [2023-11-12 00:43:52,958 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1265 transitions. [2023-11-12 00:43:52,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-12 00:43:52,959 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:52,959 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:52,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:43:53,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:53,167 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-12 00:43:53,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:53,167 INFO L85 PathProgramCache]: Analyzing trace with hash 770860825, now seen corresponding path program 1 times [2023-11-12 00:43:53,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:53,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178101054] [2023-11-12 00:43:53,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:53,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:53,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:53,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:53,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178101054] [2023-11-12 00:43:53,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178101054] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:43:53,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57186717] [2023-11-12 00:43:53,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:53,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:53,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:43:53,649 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:43:53,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:43:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:53,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-12 00:43:53,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:43:53,806 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-12 00:43:53,807 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-12 00:43:53,926 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-12 00:43:53,967 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-12 00:43:53,993 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-12 00:43:54,028 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-11-12 00:43:54,070 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-11-12 00:43:54,109 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:54,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:43:54,160 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_220 (Array Int Int))) (= (select (select (store |c_#race| c_~ptr~0.base v_ArrVal_220) |c_ULTIMATE.start_main_~#tids~0#1.base|) |c_ULTIMATE.start_main_~#tids~0#1.offset|) 0)) is different from false [2023-11-12 00:43:54,166 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 00:43:54,166 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2023-11-12 00:43:54,169 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2023-11-12 00:43:54,174 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-12 00:43:54,202 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:54,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57186717] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:43:54,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1881643070] [2023-11-12 00:43:54,203 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-12 00:43:54,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:43:54,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-12 00:43:54,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550886555] [2023-11-12 00:43:54,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:43:54,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-12 00:43:54,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:54,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-12 00:43:54,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=210, Unknown=1, NotChecked=30, Total=306 [2023-11-12 00:43:54,206 INFO L87 Difference]: Start difference. First operand 647 states and 1265 transitions. Second operand has 18 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 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) [2023-11-12 00:43:54,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:54,760 INFO L93 Difference]: Finished difference Result 614 states and 1196 transitions. [2023-11-12 00:43:54,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:43:54,761 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 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 18 [2023-11-12 00:43:54,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:54,765 INFO L225 Difference]: With dead ends: 614 [2023-11-12 00:43:54,765 INFO L226 Difference]: Without dead ends: 614 [2023-11-12 00:43:54,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=358, Unknown=1, NotChecked=42, Total=552 [2023-11-12 00:43:54,767 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 277 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:54,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 30 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 206 Invalid, 0 Unknown, 89 Unchecked, 0.4s Time] [2023-11-12 00:43:54,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2023-11-12 00:43:54,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 482. [2023-11-12 00:43:54,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 475 states have (on average 1.9621052631578948) internal successors, (932), 481 states have internal predecessors, (932), 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) [2023-11-12 00:43:54,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 932 transitions. [2023-11-12 00:43:54,787 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 932 transitions. Word has length 18 [2023-11-12 00:43:54,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:54,787 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 932 transitions. [2023-11-12 00:43:54,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 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) [2023-11-12 00:43:54,788 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 932 transitions. [2023-11-12 00:43:54,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-12 00:43:54,788 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:54,789 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-12 00:43:54,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:43:54,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b79e3f55-0a0d-4ea7-9c8b-966d3f21a927/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:43:54,994 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-12 00:43:54,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:54,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1530756248, now seen corresponding path program 1 times [2023-11-12 00:43:54,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:54,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794307997] [2023-11-12 00:43:54,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:54,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:43:55,019 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:43:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:43:55,057 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:43:55,057 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:43:55,058 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-12 00:43:55,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-11-12 00:43:55,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2023-11-12 00:43:55,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2023-11-12 00:43:55,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2023-11-12 00:43:55,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-11-12 00:43:55,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-11-12 00:43:55,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-11-12 00:43:55,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-11-12 00:43:55,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-11-12 00:43:55,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-11-12 00:43:55,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-11-12 00:43:55,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-11-12 00:43:55,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:43:55,066 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-12 00:43:55,069 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 00:43:55,069 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 00:43:55,118 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 00:43:55,124 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:43:55,124 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 174 places, 178 transitions, 372 flow [2023-11-12 00:43:55,125 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 174 places, 178 transitions, 372 flow [2023-11-12 00:43:55,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 178 transitions, 372 flow [2023-11-12 00:43:55,227 INFO L124 PetriNetUnfolderBase]: 15/325 cut-off events. [2023-11-12 00:43:55,227 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-12 00:43:55,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 325 events. 15/325 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 882 event pairs, 0 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 187. Up to 8 conditions per place. [2023-11-12 00:43:55,245 INFO L119 LiptonReduction]: Number of co-enabled transitions 12636