./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram-race.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aba856a8-a94d-4d21-b034-5255230fee05/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aba856a8-a94d-4d21-b034-5255230fee05/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aba856a8-a94d-4d21-b034-5255230fee05/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aba856a8-a94d-4d21-b034-5255230fee05/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram-race.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aba856a8-a94d-4d21-b034-5255230fee05/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aba856a8-a94d-4d21-b034-5255230fee05/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4a382c3d3f68b2f5ab68f4f645755e252baf0f41b5f6fcd4ac49047e77a0e936 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:37:34,846 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:37:34,933 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aba856a8-a94d-4d21-b034-5255230fee05/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-11-23 20:37:34,940 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:37:34,941 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:37:34,987 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:37:34,988 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:37:34,989 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:37:34,990 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:37:34,990 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:37:34,991 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:37:34,992 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:37:34,993 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:37:34,993 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:37:34,994 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:37:34,995 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:37:34,995 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:37:34,996 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:37:34,997 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:37:34,997 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:37:34,998 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:37:34,999 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:37:35,000 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:37:35,001 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:37:35,001 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:37:35,002 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:37:35,003 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:37:35,003 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:37:35,004 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:37:35,004 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:37:35,005 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:37:35,006 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-23 20:37:35,006 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:37:35,007 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:37:35,007 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:37:35,017 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:37:35,018 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:37:35,018 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:37:35,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:37:35,019 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:37:35,020 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:37:35,021 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:37:35,021 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:37:35,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:37:35,022 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:37:35,023 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:37:35,023 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:37:35,023 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:37:35,024 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_aba856a8-a94d-4d21-b034-5255230fee05/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aba856a8-a94d-4d21-b034-5255230fee05/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a382c3d3f68b2f5ab68f4f645755e252baf0f41b5f6fcd4ac49047e77a0e936 [2023-11-23 20:37:35,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:37:35,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:37:35,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:37:35,396 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:37:35,396 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:37:35,398 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aba856a8-a94d-4d21-b034-5255230fee05/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram-race.i [2023-11-23 20:37:38,756 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:37:39,528 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:37:39,529 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aba856a8-a94d-4d21-b034-5255230fee05/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram-race.i [2023-11-23 20:37:39,597 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aba856a8-a94d-4d21-b034-5255230fee05/bin/utaipan-verify-mE87zJ7Ire/data/9f4ff0aa4/40bc8bfdae6b4e658eccf81578e6a2b1/FLAG4cb1427db [2023-11-23 20:37:39,618 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aba856a8-a94d-4d21-b034-5255230fee05/bin/utaipan-verify-mE87zJ7Ire/data/9f4ff0aa4/40bc8bfdae6b4e658eccf81578e6a2b1 [2023-11-23 20:37:39,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:37:39,624 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:37:39,626 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:37:39,626 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:37:39,634 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:37:39,635 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:39" (1/1) ... [2023-11-23 20:37:39,636 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44c210e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:39, skipping insertion in model container [2023-11-23 20:37:39,637 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:39" (1/1) ... [2023-11-23 20:37:39,788 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:37:46,549 WARN L635 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-11-23 20:37:47,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:37:47,506 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:37:47,836 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile ("" "xchg" "b %b0, %1\n" : "+q" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3227] [2023-11-23 20:37:47,838 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile ("" "xchg" "w %w0, %1\n" : "+r" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3227] [2023-11-23 20:37:47,839 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile ("" "xchg" "l %0, %1\n" : "+r" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3227] [2023-11-23 20:37:47,839 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile ("" "xchg" "q %q0, %1\n" : "+r" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3227] [2023-11-23 20:37:48,027 WARN L635 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-11-23 20:37:48,067 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile("ud2"); [5814] [2023-11-23 20:37:48,151 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:37:48,960 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:48,960 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:48,960 WARN L675 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:48,961 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:48,961 WARN L675 CHandler]: The function __builtin_constant_p is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:48,961 WARN L675 CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:48,961 WARN L675 CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:48,970 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:37:48,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:48 WrapperNode [2023-11-23 20:37:48,971 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:37:48,973 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:37:48,973 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:37:48,973 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:37:48,983 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:48" (1/1) ... [2023-11-23 20:37:49,205 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:48" (1/1) ... [2023-11-23 20:37:49,323 INFO L138 Inliner]: procedures = 1354, calls = 1453, calls flagged for inlining = 348, calls inlined = 20, statements flattened = 569 [2023-11-23 20:37:49,325 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:37:49,326 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:37:49,327 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:37:49,327 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:37:49,339 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:48" (1/1) ... [2023-11-23 20:37:49,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:48" (1/1) ... [2023-11-23 20:37:49,358 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:48" (1/1) ... [2023-11-23 20:37:49,359 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:48" (1/1) ... [2023-11-23 20:37:49,436 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:48" (1/1) ... [2023-11-23 20:37:49,461 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:48" (1/1) ... [2023-11-23 20:37:49,470 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:48" (1/1) ... [2023-11-23 20:37:49,476 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:48" (1/1) ... [2023-11-23 20:37:49,503 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:37:49,504 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:37:49,505 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:37:49,505 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:37:49,506 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:48" (1/1) ... [2023-11-23 20:37:49,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:37:49,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aba856a8-a94d-4d21-b034-5255230fee05/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:37:49,547 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aba856a8-a94d-4d21-b034-5255230fee05/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:37:49,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aba856a8-a94d-4d21-b034-5255230fee05/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:37:49,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:37:49,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:37:49,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:37:49,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:37:49,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:37:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 20:37:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:37:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:37:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_read_nvram [2023-11-23 20:37:49,611 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_read_nvram [2023-11-23 20:37:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:37:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:37:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_write_nvram [2023-11-23 20:37:49,613 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_write_nvram [2023-11-23 20:37:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:37:49,616 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 20:37:50,202 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:37:50,205 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:37:51,225 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:37:51,248 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:37:51,249 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 20:37:51,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:37:51 BoogieIcfgContainer [2023-11-23 20:37:51,251 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:37:51,254 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:37:51,254 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:37:51,258 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:37:51,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:37:39" (1/3) ... [2023-11-23 20:37:51,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bab120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:37:51, skipping insertion in model container [2023-11-23 20:37:51,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:48" (2/3) ... [2023-11-23 20:37:51,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bab120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:37:51, skipping insertion in model container [2023-11-23 20:37:51,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:37:51" (3/3) ... [2023-11-23 20:37:51,262 INFO L112 eAbstractionObserver]: Analyzing ICFG char_generic_nvram_read_nvram_write_nvram-race.i [2023-11-23 20:37:51,273 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 20:37:51,287 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:37:51,287 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2023-11-23 20:37:51,287 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 20:37:51,499 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-23 20:37:51,554 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 665 places, 677 transitions, 1368 flow [2023-11-23 20:37:59,112 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 268398 states, 268123 states have (on average 2.978230140644406) internal successors, (798532), 268397 states have internal predecessors, (798532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:37:59,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:37:59,167 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;@3f1c7dc8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:37:59,167 INFO L358 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2023-11-23 20:37:59,514 INFO L276 IsEmpty]: Start isEmpty. Operand has 268398 states, 268123 states have (on average 2.978230140644406) internal successors, (798532), 268397 states have internal predecessors, (798532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:37:59,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 20:37:59,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:59,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:37:59,526 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONDATA_RACE, whoop_wrapper_read_nvramErr1ASSERT_VIOLATIONDATA_RACE, whoop_wrapper_read_nvramErr2ASSERT_VIOLATIONDATA_RACE (and 64 more)] === [2023-11-23 20:37:59,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:59,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1643374371, now seen corresponding path program 1 times [2023-11-23 20:37:59,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:37:59,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588202194] [2023-11-23 20:37:59,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:59,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:38:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:38:00,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:38:00,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:38:00,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588202194] [2023-11-23 20:38:00,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588202194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:38:00,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:38:00,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:38:00,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461472526] [2023-11-23 20:38:00,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:38:00,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:38:00,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:38:00,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:38:00,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:38:01,055 INFO L87 Difference]: Start difference. First operand has 268398 states, 268123 states have (on average 2.978230140644406) internal successors, (798532), 268397 states have internal predecessors, (798532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 34.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:38:04,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:38:04,826 INFO L93 Difference]: Finished difference Result 258665 states and 760282 transitions. [2023-11-23 20:38:04,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:38:04,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 34.0) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2023-11-23 20:38:04,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:38:06,721 INFO L225 Difference]: With dead ends: 258665 [2023-11-23 20:38:06,722 INFO L226 Difference]: Without dead ends: 258586 [2023-11-23 20:38:06,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:38:06,728 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 2 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:38:06,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1291 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:38:07,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258586 states. [2023-11-23 20:38:15,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258586 to 258586. [2023-11-23 20:38:15,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258586 states, 258268 states have (on average 2.942826831043722) internal successors, (760038), 258585 states have internal predecessors, (760038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:38:18,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258586 states to 258586 states and 760038 transitions. [2023-11-23 20:38:18,152 INFO L78 Accepts]: Start accepts. Automaton has 258586 states and 760038 transitions. Word has length 68 [2023-11-23 20:38:18,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:38:18,153 INFO L495 AbstractCegarLoop]: Abstraction has 258586 states and 760038 transitions. [2023-11-23 20:38:18,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 34.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:38:18,154 INFO L276 IsEmpty]: Start isEmpty. Operand 258586 states and 760038 transitions. [2023-11-23 20:38:18,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-23 20:38:18,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:38:18,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:38:18,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:38:18,158 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONDATA_RACE, whoop_wrapper_read_nvramErr1ASSERT_VIOLATIONDATA_RACE, whoop_wrapper_read_nvramErr2ASSERT_VIOLATIONDATA_RACE (and 64 more)] === [2023-11-23 20:38:18,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:38:18,159 INFO L85 PathProgramCache]: Analyzing trace with hash 423258084, now seen corresponding path program 1 times [2023-11-23 20:38:18,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:38:18,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324216942] [2023-11-23 20:38:18,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:38:18,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:38:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:38:18,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:38:18,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:38:18,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324216942] [2023-11-23 20:38:18,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324216942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:38:18,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:38:18,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:38:18,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967251350] [2023-11-23 20:38:18,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:38:18,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:38:18,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:38:18,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:38:18,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:38:18,377 INFO L87 Difference]: Start difference. First operand 258586 states and 760038 transitions. Second operand has 3 states, 2 states have (on average 37.5) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:38:20,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:38:20,904 INFO L93 Difference]: Finished difference Result 258585 states and 760037 transitions. [2023-11-23 20:38:20,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:38:20,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 37.5) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2023-11-23 20:38:20,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted.