/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 PETRI_NET --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 [2025-04-14 00:17:18,176 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 00:17:18,221 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 [2025-04-14 00:17:18,227 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 00:17:18,227 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 00:17:18,251 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 00:17:18,251 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 00:17:18,251 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 00:17:18,252 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 00:17:18,252 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 00:17:18,253 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 00:17:18,253 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 00:17:18,253 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 00:17:18,253 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 00:17:18,253 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 00:17:18,254 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 00:17:18,254 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 00:17:18,254 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 00:17:18,254 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 00:17:18,254 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 00:17:18,254 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 00:17:18,254 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 00:17:18,254 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 00:17:18,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 00:17:18,254 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 00:17:18,254 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 00:17:18,254 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 00:17:18,254 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 00:17:18,254 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 00:17:18,254 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:17:18,255 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:17:18,255 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:17:18,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:17:18,255 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 00:17:18,255 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:17:18,255 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:17:18,255 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:17:18,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:17:18,255 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 00:17:18,255 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 00:17:18,255 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 00:17:18,255 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 00:17:18,255 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 00:17:18,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 00:17:18,255 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 00:17:18,255 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 00:17:18,255 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 00:17:18,256 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 -> PETRI_NET Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-14 00:17:18,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 00:17:18,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 00:17:18,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 00:17:18,517 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 00:17:18,517 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 00:17:18,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2025-04-14 00:17:19,841 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8137b51ad/70fb196b427a449a8e2ea68d7523eede/FLAG5efa23daf [2025-04-14 00:17:20,139 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 00:17:20,139 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2025-04-14 00:17:20,159 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8137b51ad/70fb196b427a449a8e2ea68d7523eede/FLAG5efa23daf [2025-04-14 00:17:20,842 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8137b51ad/70fb196b427a449a8e2ea68d7523eede [2025-04-14 00:17:20,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 00:17:20,845 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 00:17:20,846 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 00:17:20,846 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 00:17:20,849 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 00:17:20,850 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:17:20" (1/1) ... [2025-04-14 00:17:20,851 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d6d3d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:17:20, skipping insertion in model container [2025-04-14 00:17:20,851 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:17:20" (1/1) ... [2025-04-14 00:17:20,878 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 00:17:21,287 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] [2025-04-14 00:17:21,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:17:21,342 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 00:17:21,401 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] [2025-04-14 00:17:21,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:17:21,464 INFO L204 MainTranslator]: Completed translation [2025-04-14 00:17:21,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:17:21 WrapperNode [2025-04-14 00:17:21,466 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 00:17:21,467 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 00:17:21,467 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 00:17:21,467 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 00:17:21,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:17:21" (1/1) ... [2025-04-14 00:17:21,492 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:17:21" (1/1) ... [2025-04-14 00:17:21,519 INFO L138 Inliner]: procedures = 279, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 246 [2025-04-14 00:17:21,520 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 00:17:21,520 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 00:17:21,520 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 00:17:21,520 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 00:17:21,528 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:17:21" (1/1) ... [2025-04-14 00:17:21,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:17:21" (1/1) ... [2025-04-14 00:17:21,534 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:17:21" (1/1) ... [2025-04-14 00:17:21,566 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]. [2025-04-14 00:17:21,566 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:17:21" (1/1) ... [2025-04-14 00:17:21,566 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:17:21" (1/1) ... [2025-04-14 00:17:21,581 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:17:21" (1/1) ... [2025-04-14 00:17:21,582 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:17:21" (1/1) ... [2025-04-14 00:17:21,586 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:17:21" (1/1) ... [2025-04-14 00:17:21,587 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:17:21" (1/1) ... [2025-04-14 00:17:21,597 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 00:17:21,602 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 00:17:21,602 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 00:17:21,602 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 00:17:21,603 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:17:21" (1/1) ... [2025-04-14 00:17:21,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:17:21,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:17:21,634 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) [2025-04-14 00:17:21,639 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 [2025-04-14 00:17:21,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-14 00:17:21,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-04-14 00:17:21,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-04-14 00:17:21,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-04-14 00:17:21,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-04-14 00:17:21,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-04-14 00:17:21,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-04-14 00:17:21,656 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2025-04-14 00:17:21,656 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2025-04-14 00:17:21,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-14 00:17:21,656 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-14 00:17:21,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-14 00:17:21,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-14 00:17:21,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-14 00:17:21,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-04-14 00:17:21,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-04-14 00:17:21,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-04-14 00:17:21,657 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2025-04-14 00:17:21,657 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2025-04-14 00:17:21,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-14 00:17:21,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-14 00:17:21,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-04-14 00:17:21,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-04-14 00:17:21,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-04-14 00:17:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-04-14 00:17:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-14 00:17:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-14 00:17:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 00:17:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-04-14 00:17:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-04-14 00:17:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-04-14 00:17:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-04-14 00:17:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-04-14 00:17:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-04-14 00:17:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 00:17:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-14 00:17:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-14 00:17:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-04-14 00:17:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-04-14 00:17:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-04-14 00:17:21,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 00:17:21,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 00:17:21,661 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-14 00:17:21,783 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 00:17:21,784 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 00:17:22,070 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1043: havoc main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset; [2025-04-14 00:17:22,071 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 [2025-04-14 00:17:22,071 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1042: havoc main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset; [2025-04-14 00:17:22,071 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 [2025-04-14 00:17:22,072 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 00:17:22,072 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 00:17:22,072 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 00:17:22,535 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:17:22,537 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:17:22,537 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:17:22,542 WARN L179 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:17:22,556 WARN L179 LargeBlockEncoding]: Complex 4:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:17:22,562 WARN L179 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:17:22,566 WARN L179 LargeBlockEncoding]: Complex 5:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:17:22,570 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 00:17:22,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:17:22 BoogieIcfgContainer [2025-04-14 00:17:22,571 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 00:17:22,572 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 00:17:22,572 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 00:17:22,575 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 00:17:22,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 12:17:20" (1/3) ... [2025-04-14 00:17:22,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1957ff39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:17:22, skipping insertion in model container [2025-04-14 00:17:22,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:17:21" (2/3) ... [2025-04-14 00:17:22,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1957ff39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:17:22, skipping insertion in model container [2025-04-14 00:17:22,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:17:22" (3/3) ... [2025-04-14 00:17:22,577 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2025-04-14 00:17:22,589 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 00:17:22,591 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. [2025-04-14 00:17:22,591 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 00:17:22,646 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-14 00:17:22,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 71 transitions, 162 flow [2025-04-14 00:17:22,751 INFO L116 PetriNetUnfolderBase]: 57/130 cut-off events. [2025-04-14 00:17:22,753 INFO L117 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-04-14 00:17:22,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 130 events. 57/130 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 382 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 66. Up to 16 conditions per place. [2025-04-14 00:17:22,758 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 71 transitions, 162 flow [2025-04-14 00:17:22,761 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 63 transitions, 140 flow [2025-04-14 00:17:22,772 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 00:17:22,782 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=PETRI_NET, 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;@7cf236c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 00:17:22,782 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-14 00:17:22,793 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 00:17:22,793 INFO L116 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-04-14 00:17:22,793 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-14 00:17:22,793 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:17:22,794 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-04-14 00:17:22,794 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)] === [2025-04-14 00:17:22,798 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:17:22,798 INFO L85 PathProgramCache]: Analyzing trace with hash 19828714, now seen corresponding path program 1 times [2025-04-14 00:17:22,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:17:22,804 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256576284] [2025-04-14 00:17:22,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:17:22,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:17:22,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-14 00:17:22,972 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-14 00:17:22,973 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:17:22,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-14 00:17:22,973 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-14 00:17:22,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-14 00:17:23,011 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-14 00:17:23,011 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:17:23,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-14 00:17:23,049 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-14 00:17:23,050 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-14 00:17:23,051 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2025-04-14 00:17:23,053 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2025-04-14 00:17:23,053 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-14 00:17:23,053 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2025-04-14 00:17:23,053 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 00:17:23,054 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-14 00:17:23,057 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-14 00:17:23,057 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-04-14 00:17:23,115 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2025-04-14 00:17:23,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 121 transitions, 286 flow [2025-04-14 00:17:23,192 INFO L116 PetriNetUnfolderBase]: 208/434 cut-off events. [2025-04-14 00:17:23,192 INFO L117 PetriNetUnfolderBase]: For 72/90 co-relation queries the response was YES. [2025-04-14 00:17:23,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 434 events. 208/434 cut-off events. For 72/90 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1893 event pairs, 2 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 291. Up to 39 conditions per place. [2025-04-14 00:17:23,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 121 transitions, 286 flow [2025-04-14 00:17:23,216 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 115 transitions, 274 flow [2025-04-14 00:17:23,217 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 00:17:23,217 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=PETRI_NET, 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;@7cf236c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 00:17:23,217 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-14 00:17:23,228 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 00:17:23,230 INFO L116 PetriNetUnfolderBase]: 1/35 cut-off events. [2025-04-14 00:17:23,230 INFO L117 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-04-14 00:17:23,230 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:17:23,230 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-04-14 00:17:23,230 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)] === [2025-04-14 00:17:23,230 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:17:23,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1141686772, now seen corresponding path program 1 times [2025-04-14 00:17:23,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:17:23,231 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168468940] [2025-04-14 00:17:23,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:17:23,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:17:23,280 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-14 00:17:23,317 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-14 00:17:23,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:17:23,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-14 00:17:23,317 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-14 00:17:23,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-14 00:17:23,343 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-14 00:17:23,343 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:17:23,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-14 00:17:23,364 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-14 00:17:23,364 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-14 00:17:23,364 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-04-14 00:17:23,364 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-04-14 00:17:23,364 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-04-14 00:17:23,364 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2025-04-14 00:17:23,364 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-04-14 00:17:23,364 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 00:17:23,367 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-14 00:17:23,367 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-14 00:17:23,367 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-04-14 00:17:23,442 INFO L143 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2025-04-14 00:17:23,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 171 transitions, 414 flow [2025-04-14 00:17:23,650 INFO L116 PetriNetUnfolderBase]: 669/1270 cut-off events. [2025-04-14 00:17:23,650 INFO L117 PetriNetUnfolderBase]: For 419/511 co-relation queries the response was YES. [2025-04-14 00:17:23,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 1270 events. 669/1270 cut-off events. For 419/511 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6607 event pairs, 64 based on Foata normal form. 0/737 useless extension candidates. Maximal degree in co-relation 936. Up to 192 conditions per place. [2025-04-14 00:17:23,674 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 171 transitions, 414 flow [2025-04-14 00:17:23,695 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 165 transitions, 402 flow [2025-04-14 00:17:23,696 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 00:17:23,696 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=PETRI_NET, 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;@7cf236c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 00:17:23,696 INFO L341 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-04-14 00:17:23,709 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 00:17:23,709 INFO L116 PetriNetUnfolderBase]: 3/68 cut-off events. [2025-04-14 00:17:23,709 INFO L117 PetriNetUnfolderBase]: For 25/37 co-relation queries the response was YES. [2025-04-14 00:17:23,709 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:17:23,709 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2025-04-14 00:17:23,710 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 3 more)] === [2025-04-14 00:17:23,710 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:17:23,710 INFO L85 PathProgramCache]: Analyzing trace with hash 931593047, now seen corresponding path program 1 times [2025-04-14 00:17:23,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:17:23,711 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831595702] [2025-04-14 00:17:23,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:17:23,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:17:23,767 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-14 00:17:23,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-14 00:17:23,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:17:23,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-14 00:17:23,808 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-14 00:17:23,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-14 00:17:23,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-14 00:17:23,829 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:17:23,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-14 00:17:23,839 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-14 00:17:23,839 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-14 00:17:23,839 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2025-04-14 00:17:23,839 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2025-04-14 00:17:23,839 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2025-04-14 00:17:23,839 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2025-04-14 00:17:23,840 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2025-04-14 00:17:23,840 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2025-04-14 00:17:23,840 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 00:17:23,840 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-14 00:17:23,840 WARN L247 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-14 00:17:23,840 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-04-14 00:17:23,942 INFO L143 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2025-04-14 00:17:23,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 221 transitions, 546 flow [2025-04-14 00:17:24,473 INFO L116 PetriNetUnfolderBase]: 2520/4258 cut-off events. [2025-04-14 00:17:24,473 INFO L117 PetriNetUnfolderBase]: For 2144/2314 co-relation queries the response was YES. [2025-04-14 00:17:24,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6399 conditions, 4258 events. 2520/4258 cut-off events. For 2144/2314 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 24689 event pairs, 626 based on Foata normal form. 0/2929 useless extension candidates. Maximal degree in co-relation 3242. Up to 1024 conditions per place. [2025-04-14 00:17:24,527 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 221 transitions, 546 flow [2025-04-14 00:17:24,577 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 215 transitions, 534 flow [2025-04-14 00:17:24,578 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 00:17:24,578 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=PETRI_NET, 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;@7cf236c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 00:17:24,579 INFO L341 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-04-14 00:17:24,593 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 00:17:24,593 INFO L116 PetriNetUnfolderBase]: 16/130 cut-off events. [2025-04-14 00:17:24,593 INFO L117 PetriNetUnfolderBase]: For 73/93 co-relation queries the response was YES. [2025-04-14 00:17:24,593 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:17:24,593 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2025-04-14 00:17:24,593 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-14 00:17:24,594 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:17:24,594 INFO L85 PathProgramCache]: Analyzing trace with hash 2039941523, now seen corresponding path program 1 times [2025-04-14 00:17:24,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:17:24,594 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547358861] [2025-04-14 00:17:24,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:17:24,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:17:24,626 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-14 00:17:24,648 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-14 00:17:24,648 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:17:24,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-14 00:17:24,648 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-14 00:17:24,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-14 00:17:24,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-14 00:17:24,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:17:24,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-14 00:17:24,686 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-14 00:17:24,686 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-14 00:17:24,686 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2025-04-14 00:17:24,687 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2025-04-14 00:17:24,687 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2025-04-14 00:17:24,687 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2025-04-14 00:17:24,687 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2025-04-14 00:17:24,687 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2025-04-14 00:17:24,687 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2025-04-14 00:17:24,687 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-14 00:17:24,687 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-14 00:17:24,687 WARN L247 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-14 00:17:24,687 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2025-04-14 00:17:24,770 INFO L143 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2025-04-14 00:17:24,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 271 transitions, 682 flow [2025-04-14 00:17:27,135 INFO L116 PetriNetUnfolderBase]: 10945/16742 cut-off events. [2025-04-14 00:17:27,136 INFO L117 PetriNetUnfolderBase]: For 10450/10732 co-relation queries the response was YES. [2025-04-14 00:17:27,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27133 conditions, 16742 events. 10945/16742 cut-off events. For 10450/10732 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 101631 event pairs, 4296 based on Foata normal form. 0/12827 useless extension candidates. Maximal degree in co-relation 13044. Up to 5120 conditions per place. [2025-04-14 00:17:27,417 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 271 transitions, 682 flow [2025-04-14 00:17:27,726 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 265 transitions, 670 flow [2025-04-14 00:17:27,727 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 00:17:27,727 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=PETRI_NET, 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;@7cf236c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 00:17:27,728 INFO L341 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-04-14 00:17:27,745 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 00:17:27,745 INFO L116 PetriNetUnfolderBase]: 24/155 cut-off events. [2025-04-14 00:17:27,745 INFO L117 PetriNetUnfolderBase]: For 87/119 co-relation queries the response was YES. [2025-04-14 00:17:27,746 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:17:27,746 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:17:27,746 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-04-14 00:17:27,746 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:17:27,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1807095925, now seen corresponding path program 1 times [2025-04-14 00:17:27,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:17:27,746 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005653688] [2025-04-14 00:17:27,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:17:27,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:17:27,762 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-14 00:17:27,763 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-14 00:17:27,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:17:27,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:17:27,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:17:27,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:17:27,801 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005653688] [2025-04-14 00:17:27,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005653688] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:17:27,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:17:27,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-14 00:17:27,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686053865] [2025-04-14 00:17:27,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:17:27,806 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-14 00:17:27,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:17:27,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-14 00:17:27,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-14 00:17:27,829 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 271 [2025-04-14 00:17:27,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 265 transitions, 670 flow. Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:17:27,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:17:27,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 271 [2025-04-14 00:17:27,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand