/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.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis FINITE_AUTOMATA -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 17:31:16,539 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 17:31:16,594 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 17:31:16,597 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 17:31:16,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 17:31:16,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 17:31:16,616 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 17:31:16,616 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 17:31:16,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 17:31:16,617 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 17:31:16,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 17:31:16,617 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 17:31:16,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 17:31:16,618 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 17:31:16,618 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 17:31:16,618 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 17:31:16,618 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 17:31:16,618 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 17:31:16,618 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 17:31:16,618 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 17:31:16,619 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 17:31:16,619 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 17:31:16,619 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 17:31:16,619 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 17:31:16,619 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 17:31:16,619 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 17:31:16,619 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 17:31:16,619 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 17:31:16,619 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 17:31:16,619 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 17:31:16,619 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 17:31:16,619 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 17:31:16,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:31:16,619 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 17:31:16,619 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 17:31:16,619 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 17:31:16,620 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 17:31:16,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:31:16,620 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 17:31:16,620 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 17:31:16,620 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 17:31:16,620 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 17:31:16,620 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 17:31:16,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 17:31:16,620 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 17:31:16,620 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 17:31:16,620 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 17:31:16,620 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 [2025-04-13 17:31:16,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 17:31:16,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 17:31:16,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 17:31:16,843 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 17:31:16,845 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 17:31:16,846 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2025-04-13 17:31:18,121 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19e2a895f/5468634d4e6f473c986009ef8a1bf96f/FLAGf6953ecab [2025-04-13 17:31:18,352 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 17:31:18,355 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2025-04-13 17:31:18,368 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19e2a895f/5468634d4e6f473c986009ef8a1bf96f/FLAGf6953ecab [2025-04-13 17:31:19,171 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19e2a895f/5468634d4e6f473c986009ef8a1bf96f [2025-04-13 17:31:19,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 17:31:19,174 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 17:31:19,176 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 17:31:19,176 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 17:31:19,179 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 17:31:19,180 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 05:31:19" (1/1) ... [2025-04-13 17:31:19,180 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@228aac5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:31:19, skipping insertion in model container [2025-04-13 17:31:19,181 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 05:31:19" (1/1) ... [2025-04-13 17:31:19,210 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 17:31:19,460 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 17:31:19,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 17:31:19,498 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 17:31:19,541 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 17:31:19,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 17:31:19,598 INFO L204 MainTranslator]: Completed translation [2025-04-13 17:31:19,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:31:19 WrapperNode [2025-04-13 17:31:19,599 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 17:31:19,599 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 17:31:19,599 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 17:31:19,599 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 17:31:19,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:31:19" (1/1) ... [2025-04-13 17:31:19,618 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:31:19" (1/1) ... [2025-04-13 17:31:19,636 INFO L138 Inliner]: procedures = 279, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 246 [2025-04-13 17:31:19,637 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 17:31:19,637 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 17:31:19,637 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 17:31:19,637 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 17:31:19,643 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:31:19" (1/1) ... [2025-04-13 17:31:19,644 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:31:19" (1/1) ... [2025-04-13 17:31:19,647 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:31:19" (1/1) ... [2025-04-13 17:31:19,664 INFO L175 MemorySlicer]: Split 30 memory accesses to 6 slices as follows [2, 5, 5, 2, 2, 14]. 47 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0, 0, 0]. The 10 writes are split as follows [0, 0, 0, 1, 1, 8]. [2025-04-13 17:31:19,664 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:31:19" (1/1) ... [2025-04-13 17:31:19,664 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:31:19" (1/1) ... [2025-04-13 17:31:19,675 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:31:19" (1/1) ... [2025-04-13 17:31:19,676 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:31:19" (1/1) ... [2025-04-13 17:31:19,680 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:31:19" (1/1) ... [2025-04-13 17:31:19,682 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:31:19" (1/1) ... [2025-04-13 17:31:19,683 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:31:19" (1/1) ... [2025-04-13 17:31:19,687 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 17:31:19,687 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 17:31:19,687 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 17:31:19,687 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 17:31:19,688 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:31:19" (1/1) ... [2025-04-13 17:31:19,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:31:19,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:31:19,720 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 17:31:19,722 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 17:31:19,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-13 17:31:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-04-13 17:31:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-04-13 17:31:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-04-13 17:31:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-04-13 17:31:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-04-13 17:31:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-04-13 17:31:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2025-04-13 17:31:19,738 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2025-04-13 17:31:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-13 17:31:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-13 17:31:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 17:31:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 17:31:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-13 17:31:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-04-13 17:31:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-04-13 17:31:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-04-13 17:31:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2025-04-13 17:31:19,738 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2025-04-13 17:31:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 17:31:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 17:31:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-04-13 17:31:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-04-13 17:31:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-04-13 17:31:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-04-13 17:31:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-13 17:31:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-13 17:31:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 17:31:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-04-13 17:31:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-04-13 17:31:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-04-13 17:31:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-04-13 17:31:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-04-13 17:31:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-04-13 17:31:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 17:31:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 17:31:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-13 17:31:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-04-13 17:31:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-04-13 17:31:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-04-13 17:31:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 17:31:19,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 17:31:19,740 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 17:31:19,884 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 17:31:19,887 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 17:31:20,198 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 17:31:20,198 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 17:31:20,198 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 17:31:20,669 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 17:31:20,671 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 17:31:20,671 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 17:31:20,682 WARN L179 LargeBlockEncoding]: Complex 3:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 17:31:20,684 WARN L179 LargeBlockEncoding]: Complex 3:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 17:31:20,688 WARN L179 LargeBlockEncoding]: Complex 4:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 17:31:20,693 WARN L179 LargeBlockEncoding]: Complex 2:4 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 17:31:20,697 INFO L313 CfgBuilder]: Removed 6 assume(true) statements. [2025-04-13 17:31:20,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 05:31:20 BoogieIcfgContainer [2025-04-13 17:31:20,698 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 17:31:20,700 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 17:31:20,700 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 17:31:20,703 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 17:31:20,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 05:31:19" (1/3) ... [2025-04-13 17:31:20,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cd3e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 05:31:20, skipping insertion in model container [2025-04-13 17:31:20,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:31:19" (2/3) ... [2025-04-13 17:31:20,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cd3e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 05:31:20, skipping insertion in model container [2025-04-13 17:31:20,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 05:31:20" (3/3) ... [2025-04-13 17:31:20,705 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2025-04-13 17:31:20,716 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 17:31:20,718 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_81-list_racing.i that has 3 procedures, 37 locations, 64 edges, 1 initial locations, 10 loop locations, and 1 error locations. [2025-04-13 17:31:20,718 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 17:31:20,775 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-13 17:31:20,801 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 68 transitions, 156 flow [2025-04-13 17:31:20,905 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 928 states, 919 states have (on average 3.324265505984766) internal successors, (3055), 927 states have internal predecessors, (3055), 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 17:31:20,925 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 17:31:20,933 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;@4ab5af1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 17:31:20,934 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-13 17:31:20,939 INFO L278 IsEmpty]: Start isEmpty. Operand has 928 states, 919 states have (on average 3.324265505984766) internal successors, (3055), 927 states have internal predecessors, (3055), 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 17:31:20,942 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-04-13 17:31:20,942 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:31:20,943 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-04-13 17:31:20,943 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 17:31:20,946 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:31:20,947 INFO L85 PathProgramCache]: Analyzing trace with hash 22488799, now seen corresponding path program 1 times [2025-04-13 17:31:20,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:31:20,952 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783442168] [2025-04-13 17:31:20,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:31:20,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:31:21,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 17:31:21,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 17:31:21,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:31:21,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 17:31:21,103 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 17:31:21,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 17:31:21,145 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 17:31:21,145 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:31:21,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 17:31:21,173 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 17:31:21,174 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 17:31:21,174 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2025-04-13 17:31:21,176 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2025-04-13 17:31:21,176 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-13 17:31:21,176 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2025-04-13 17:31:21,176 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 17:31:21,179 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 17:31:21,181 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 17:31:21,181 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-04-13 17:31:21,236 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2025-04-13 17:31:21,243 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 74 places, 115 transitions, 274 flow [2025-04-13 17:31:25,685 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 144780 states, 144741 states have (on average 5.768040845372078) internal successors, (834872), 144779 states have internal predecessors, (834872), 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 17:31:25,815 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 17:31:25,816 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;@4ab5af1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 17:31:25,816 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-13 17:31:26,157 INFO L278 IsEmpty]: Start isEmpty. Operand has 144780 states, 144741 states have (on average 5.768040845372078) internal successors, (834872), 144779 states have internal predecessors, (834872), 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 17:31:26,159 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-04-13 17:31:26,159 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:31:26,160 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2025-04-13 17:31:26,160 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 17:31:26,160 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:31:26,160 INFO L85 PathProgramCache]: Analyzing trace with hash -777210104, now seen corresponding path program 1 times [2025-04-13 17:31:26,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:31:26,161 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505499417] [2025-04-13 17:31:26,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:31:26,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:31:26,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 17:31:26,235 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 17:31:26,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:31:26,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 17:31:26,235 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 17:31:26,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 17:31:26,268 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 17:31:26,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:31:26,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 17:31:26,285 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 17:31:26,285 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 17:31:26,285 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-04-13 17:31:26,286 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-04-13 17:31:26,286 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-04-13 17:31:26,286 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2025-04-13 17:31:26,286 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-04-13 17:31:26,286 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 17:31:26,286 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 17:31:26,288 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 17:31:26,288 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-04-13 17:31:26,349 INFO L143 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2025-04-13 17:31:26,354 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 105 places, 162 transitions, 396 flow