/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/pthread-ext/26_stack_cas_longer-1.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 23:51:07,636 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 23:51:07,687 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 23:51:07,692 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 23:51:07,693 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 23:51:07,713 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 23:51:07,713 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 23:51:07,713 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 23:51:07,714 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 23:51:07,714 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 23:51:07,714 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 23:51:07,714 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 23:51:07,714 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 23:51:07,714 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 23:51:07,714 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 23:51:07,714 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 23:51:07,714 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 23:51:07,715 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 23:51:07,715 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 23:51:07,715 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 23:51:07,715 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 23:51:07,715 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 23:51:07,715 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 23:51:07,715 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 23:51:07,715 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 23:51:07,715 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 23:51:07,715 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 23:51:07,715 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 23:51:07,715 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 23:51:07,715 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 23:51:07,715 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 23:51:07,715 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 23:51:07,715 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:51:07,716 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 23:51:07,716 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 23:51:07,716 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 23:51:07,716 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 23:51:07,716 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:51:07,716 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 23:51:07,716 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 23:51:07,716 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 23:51:07,716 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 23:51:07,716 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 23:51:07,716 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 23:51:07,716 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 23:51:07,716 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 23:51:07,716 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 23:51:07,716 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 [2025-04-13 23:51:07,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 23:51:07,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 23:51:07,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 23:51:08,000 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 23:51:08,000 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 23:51:08,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i [2025-04-13 23:51:09,278 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2c977497/c548b4a8b8d64edcafe64e28a9b1fceb/FLAG0f016e3bb [2025-04-13 23:51:09,569 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 23:51:09,572 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i [2025-04-13 23:51:09,586 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2c977497/c548b4a8b8d64edcafe64e28a9b1fceb/FLAG0f016e3bb [2025-04-13 23:51:10,279 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2c977497/c548b4a8b8d64edcafe64e28a9b1fceb [2025-04-13 23:51:10,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 23:51:10,283 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 23:51:10,284 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 23:51:10,284 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 23:51:10,290 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 23:51:10,293 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 11:51:10" (1/1) ... [2025-04-13 23:51:10,293 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@253dfaed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:51:10, skipping insertion in model container [2025-04-13 23:51:10,293 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 11:51:10" (1/1) ... [2025-04-13 23:51:10,318 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 23:51:10,638 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i[31308,31321] [2025-04-13 23:51:10,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 23:51:10,692 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 23:51:10,738 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i[31308,31321] [2025-04-13 23:51:10,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 23:51:10,780 INFO L204 MainTranslator]: Completed translation [2025-04-13 23:51:10,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:51:10 WrapperNode [2025-04-13 23:51:10,781 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 23:51:10,782 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 23:51:10,782 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 23:51:10,782 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 23:51:10,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:51:10" (1/1) ... [2025-04-13 23:51:10,801 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:51:10" (1/1) ... [2025-04-13 23:51:10,843 INFO L138 Inliner]: procedures = 179, calls = 46, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 819 [2025-04-13 23:51:10,843 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 23:51:10,843 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 23:51:10,843 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 23:51:10,843 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 23:51:10,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:51:10" (1/1) ... [2025-04-13 23:51:10,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:51:10" (1/1) ... [2025-04-13 23:51:10,853 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:51:10" (1/1) ... [2025-04-13 23:51:10,883 INFO L175 MemorySlicer]: Split 24 memory accesses to 4 slices as follows [4, 2, 12, 6]. 50 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [1, 2, 2, 1]. The 9 writes are split as follows [2, 0, 5, 2]. [2025-04-13 23:51:10,883 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:51:10" (1/1) ... [2025-04-13 23:51:10,884 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:51:10" (1/1) ... [2025-04-13 23:51:10,898 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:51:10" (1/1) ... [2025-04-13 23:51:10,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:51:10" (1/1) ... [2025-04-13 23:51:10,911 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:51:10" (1/1) ... [2025-04-13 23:51:10,912 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:51:10" (1/1) ... [2025-04-13 23:51:10,925 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 23:51:10,926 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-13 23:51:10,926 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-13 23:51:10,926 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-13 23:51:10,932 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:51:10" (1/1) ... [2025-04-13 23:51:10,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:51:10,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:51:10,960 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 23:51:10,965 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 23:51:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 23:51:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 23:51:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-13 23:51:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-04-13 23:51:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-04-13 23:51:10,981 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-04-13 23:51:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 23:51:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 23:51:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-04-13 23:51:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-04-13 23:51:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 23:51:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 23:51:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-13 23:51:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-13 23:51:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 23:51:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 23:51:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-13 23:51:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-04-13 23:51:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 23:51:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 23:51:10,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 23:51:10,982 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 23:51:11,088 INFO L256 CfgBuilder]: Building ICFG [2025-04-13 23:51:11,090 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 23:51:11,797 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 23:51:11,798 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 23:51:11,798 INFO L318 CfgBuilder]: Performing block encoding [2025-04-13 23:51:44,210 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 23:51:44,413 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 23:51:44,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 11:51:44 BoogieIcfgContainer [2025-04-13 23:51:44,414 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-13 23:51:44,415 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 23:51:44,415 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 23:51:44,418 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 23:51:44,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 11:51:10" (1/3) ... [2025-04-13 23:51:44,419 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e2acc21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 11:51:44, skipping insertion in model container [2025-04-13 23:51:44,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:51:10" (2/3) ... [2025-04-13 23:51:44,419 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e2acc21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 11:51:44, skipping insertion in model container [2025-04-13 23:51:44,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 11:51:44" (3/3) ... [2025-04-13 23:51:44,420 INFO L128 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longer-1.i [2025-04-13 23:51:44,430 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 23:51:44,432 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 26_stack_cas_longer-1.i that has 2 procedures, 23 locations, 29 edges, 1 initial locations, 3 loop locations, and 1 error locations. [2025-04-13 23:51:44,432 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 23:51:44,549 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 23:51:44,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 30 transitions, 64 flow [2025-04-13 23:51:44,636 INFO L116 PetriNetUnfolderBase]: 6/30 cut-off events. [2025-04-13 23:51:44,638 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 23:51:44,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 30 events. 6/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 26. Up to 3 conditions per place. [2025-04-13 23:51:44,640 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 30 transitions, 64 flow [2025-04-13 23:51:44,645 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 29 transitions, 62 flow [2025-04-13 23:51:44,651 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 23:51:44,661 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;@33969b06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 23:51:44,661 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 23:51:44,701 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 23:51:44,702 INFO L116 PetriNetUnfolderBase]: 0/5 cut-off events. [2025-04-13 23:51:44,702 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 23:51:44,702 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:51:44,702 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-04-13 23:51:44,703 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-13 23:51:44,706 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:51:44,706 INFO L85 PathProgramCache]: Analyzing trace with hash 54539721, now seen corresponding path program 1 times [2025-04-13 23:51:44,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:51:44,712 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810715552] [2025-04-13 23:51:44,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:51:44,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms Received shutdown request... [2025-04-14 00:05:55,051 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-14 00:05:56,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown