/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis FINITE_AUTOMATA --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 21:56:35,193 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 21:56:35,229 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 21:56:35,232 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 21:56:35,233 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 21:56:35,250 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 21:56:35,250 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 21:56:35,250 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 21:56:35,250 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 21:56:35,252 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 21:56:35,252 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 21:56:35,252 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 21:56:35,253 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 21:56:35,253 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 21:56:35,253 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 21:56:35,253 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 21:56:35,254 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 21:56:35,254 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 21:56:35,254 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 21:56:35,254 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 21:56:35,254 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 21:56:35,254 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 21:56:35,254 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 21:56:35,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 21:56:35,254 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 21:56:35,254 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 21:56:35,254 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 21:56:35,254 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 21:56:35,254 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 21:56:35,254 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:56:35,255 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:56:35,255 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:56:35,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:56:35,255 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 21:56:35,255 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:56:35,255 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:56:35,255 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:56:35,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:56:35,255 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 21:56:35,255 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 21:56:35,255 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 21:56:35,255 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 21:56:35,255 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 21:56:35,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 21:56:35,255 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 21:56:35,256 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 21:56:35,256 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 21:56:35,256 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> FINITE_AUTOMATA Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-13 21:56:35,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 21:56:35,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 21:56:35,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 21:56:35,488 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 21:56:35,489 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 21:56:35,491 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2025-04-13 21:56:36,813 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e99f2034/7fa9cefa909f468698310ea77e392ee1/FLAG2a6cb1c66 [2025-04-13 21:56:37,087 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 21:56:37,088 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2025-04-13 21:56:37,099 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e99f2034/7fa9cefa909f468698310ea77e392ee1/FLAG2a6cb1c66 [2025-04-13 21:56:37,864 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e99f2034/7fa9cefa909f468698310ea77e392ee1 [2025-04-13 21:56:37,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 21:56:37,867 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 21:56:37,868 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 21:56:37,868 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 21:56:37,871 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 21:56:37,871 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:56:37" (1/1) ... [2025-04-13 21:56:37,872 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f70fab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:56:37, skipping insertion in model container [2025-04-13 21:56:37,872 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:56:37" (1/1) ... [2025-04-13 21:56:37,895 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 21:56:38,210 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2025-04-13 21:56:38,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:56:38,252 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 21:56:38,289 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2025-04-13 21:56:38,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:56:38,339 INFO L204 MainTranslator]: Completed translation [2025-04-13 21:56:38,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:56:38 WrapperNode [2025-04-13 21:56:38,340 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 21:56:38,341 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 21:56:38,341 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 21:56:38,341 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 21:56:38,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:56:38" (1/1) ... [2025-04-13 21:56:38,356 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:56:38" (1/1) ... [2025-04-13 21:56:38,377 INFO L138 Inliner]: procedures = 279, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 246 [2025-04-13 21:56:38,377 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 21:56:38,378 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 21:56:38,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 21:56:38,378 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 21:56:38,384 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:56:38" (1/1) ... [2025-04-13 21:56:38,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:56:38" (1/1) ... [2025-04-13 21:56:38,388 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:56:38" (1/1) ... [2025-04-13 21:56:38,409 INFO L175 MemorySlicer]: Split 30 memory accesses to 6 slices as follows [2, 2, 2, 5, 5, 14]. 47 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 0, 5, 5, 0]. The 10 writes are split as follows [0, 1, 1, 0, 0, 8]. [2025-04-13 21:56:38,409 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:56:38" (1/1) ... [2025-04-13 21:56:38,409 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:56:38" (1/1) ... [2025-04-13 21:56:38,416 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:56:38" (1/1) ... [2025-04-13 21:56:38,417 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:56:38" (1/1) ... [2025-04-13 21:56:38,418 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:56:38" (1/1) ... [2025-04-13 21:56:38,419 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:56:38" (1/1) ... [2025-04-13 21:56:38,423 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 21:56:38,424 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-13 21:56:38,424 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-13 21:56:38,424 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-13 21:56:38,425 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:56:38" (1/1) ... [2025-04-13 21:56:38,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:56:38,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:56:38,451 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-13 21:56:38,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-13 21:56:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-13 21:56:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-04-13 21:56:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-04-13 21:56:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-04-13 21:56:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-04-13 21:56:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-04-13 21:56:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-04-13 21:56:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2025-04-13 21:56:38,468 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2025-04-13 21:56:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-13 21:56:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-13 21:56:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 21:56:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 21:56:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-13 21:56:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-04-13 21:56:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-04-13 21:56:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-04-13 21:56:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2025-04-13 21:56:38,468 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2025-04-13 21:56:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 21:56:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 21:56:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-04-13 21:56:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-04-13 21:56:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-04-13 21:56:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-04-13 21:56:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-13 21:56:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-13 21:56:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 21:56:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-04-13 21:56:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-04-13 21:56:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-04-13 21:56:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-04-13 21:56:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-04-13 21:56:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-04-13 21:56:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 21:56:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 21:56:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-13 21:56:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-04-13 21:56:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-04-13 21:56:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-04-13 21:56:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 21:56:38,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 21:56:38,470 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 21:56:38,594 INFO L256 CfgBuilder]: Building ICFG [2025-04-13 21:56:38,595 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 21:56:38,862 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1043: havoc main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset; [2025-04-13 21:56:38,862 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1043-1: SUMMARY for call ULTIMATE.dealloc(main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset); srcloc: null [2025-04-13 21:56:38,863 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1042: havoc main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset; [2025-04-13 21:56:38,863 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1042-1: SUMMARY for call ULTIMATE.dealloc(main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset); srcloc: null [2025-04-13 21:56:38,863 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 21:56:38,864 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 21:56:38,864 INFO L318 CfgBuilder]: Performing block encoding [2025-04-13 21:56:39,335 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:56:39,338 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:56:39,338 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:56:39,340 WARN L179 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:56:39,353 WARN L179 LargeBlockEncoding]: Complex 4:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:56:39,357 WARN L179 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:56:39,361 WARN L179 LargeBlockEncoding]: Complex 5:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:56:39,366 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 21:56:39,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 09:56:39 BoogieIcfgContainer [2025-04-13 21:56:39,366 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-13 21:56:39,367 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 21:56:39,369 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 21:56:39,373 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 21:56:39,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 09:56:37" (1/3) ... [2025-04-13 21:56:39,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369c0405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:56:39, skipping insertion in model container [2025-04-13 21:56:39,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:56:38" (2/3) ... [2025-04-13 21:56:39,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369c0405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:56:39, skipping insertion in model container [2025-04-13 21:56:39,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 09:56:39" (3/3) ... [2025-04-13 21:56:39,374 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2025-04-13 21:56:39,385 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 21:56:39,387 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_81-list_racing.i that has 3 procedures, 36 locations, 67 edges, 1 initial locations, 9 loop locations, and 1 error locations. [2025-04-13 21:56:39,387 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 21:56:39,447 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-13 21:56:39,473 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 71 transitions, 162 flow [2025-04-13 21:56:39,554 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 884 states, 875 states have (on average 3.454857142857143) internal successors, (3023), 883 states have internal predecessors, (3023), 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) [2025-04-13 21:56:39,575 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 21:56:39,585 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@27be2ad4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 21:56:39,585 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-13 21:56:39,589 INFO L278 IsEmpty]: Start isEmpty. Operand has 884 states, 875 states have (on average 3.454857142857143) internal successors, (3023), 883 states have internal predecessors, (3023), 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) [2025-04-13 21:56:39,592 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-04-13 21:56:39,592 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:56:39,592 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-04-13 21:56:39,593 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 21:56:39,596 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:56:39,596 INFO L85 PathProgramCache]: Analyzing trace with hash 19828714, now seen corresponding path program 1 times [2025-04-13 21:56:39,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:56:39,601 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720971694] [2025-04-13 21:56:39,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:56:39,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:56:39,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 21:56:39,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 21:56:39,771 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:56:39,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 21:56:39,772 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 21:56:39,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 21:56:39,817 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 21:56:39,817 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:56:39,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 21:56:39,855 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 21:56:39,856 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 21:56:39,856 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2025-04-13 21:56:39,858 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2025-04-13 21:56:39,858 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-13 21:56:39,858 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2025-04-13 21:56:39,859 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 21:56:39,862 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 21:56:39,864 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 21:56:39,864 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-04-13 21:56:39,922 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2025-04-13 21:56:39,924 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 72 places, 121 transitions, 286 flow [2025-04-13 21:56:44,009 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 131822 states, 131783 states have (on average 6.191329685923071) internal successors, (815912), 131821 states have internal predecessors, (815912), 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) [2025-04-13 21:56:44,016 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 21:56:44,016 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@27be2ad4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 21:56:44,016 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-13 21:56:44,286 INFO L278 IsEmpty]: Start isEmpty. Operand has 131822 states, 131783 states have (on average 6.191329685923071) internal successors, (815912), 131821 states have internal predecessors, (815912), 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) [2025-04-13 21:56:44,287 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-04-13 21:56:44,287 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:56:44,288 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2025-04-13 21:56:44,288 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 21:56:44,288 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:56:44,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1141686772, now seen corresponding path program 1 times [2025-04-13 21:56:44,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:56:44,288 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128911641] [2025-04-13 21:56:44,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:56:44,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:56:44,327 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 21:56:44,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 21:56:44,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:56:44,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 21:56:44,355 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 21:56:44,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 21:56:44,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 21:56:44,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:56:44,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 21:56:44,404 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 21:56:44,407 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 21:56:44,407 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-04-13 21:56:44,407 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-04-13 21:56:44,407 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-04-13 21:56:44,407 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2025-04-13 21:56:44,407 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-04-13 21:56:44,407 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 21:56:44,408 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 21:56:44,408 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 21:56:44,408 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-04-13 21:56:44,471 INFO L143 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2025-04-13 21:56:44,475 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 102 places, 171 transitions, 414 flow