./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 735b3cc8 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e02ca79ae11b312cb156178ccd52c5da7b51884a938996d16b5a625457869bce --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 00:52:58,241 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 00:52:58,293 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-14 00:52:58,296 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 00:52:58,297 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 00:52:58,315 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 00:52:58,315 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 00:52:58,315 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 00:52:58,316 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-14 00:52:58,316 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-14 00:52:58,316 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 00:52:58,316 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 00:52:58,316 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 00:52:58,316 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 00:52:58,316 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 00:52:58,316 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 00:52:58,316 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 00:52:58,317 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 00:52:58,317 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 00:52:58,317 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 00:52:58,317 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 00:52:58,317 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 00:52:58,317 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 00:52:58,317 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 00:52:58,317 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 00:52:58,317 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 00:52:58,317 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 00:52:58,317 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 00:52:58,318 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 00:52:58,318 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 00:52:58,318 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-14 00:52:58,318 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 00:52:58,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 00:52:58,318 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 00:52:58,318 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 00:52:58,318 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 00:52:58,318 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 00:52:58,318 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 00:52:58,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 00:52:58,318 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 00:52:58,318 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 00:52:58,319 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 00:52:58,319 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 00:52:58,319 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e02ca79ae11b312cb156178ccd52c5da7b51884a938996d16b5a625457869bce [2025-03-14 00:52:58,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 00:52:58,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 00:52:58,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 00:52:58,522 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 00:52:58,522 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 00:52:58,524 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-03-14 00:52:59,612 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1380eb83/3c8508e929fe4a6488f89f702486ac33/FLAG71288ef61 [2025-03-14 00:52:59,934 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 00:52:59,935 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-03-14 00:52:59,949 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1380eb83/3c8508e929fe4a6488f89f702486ac33/FLAG71288ef61 [2025-03-14 00:53:00,197 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1380eb83/3c8508e929fe4a6488f89f702486ac33 [2025-03-14 00:53:00,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 00:53:00,201 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 00:53:00,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 00:53:00,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 00:53:00,204 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 00:53:00,205 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 12:53:00" (1/1) ... [2025-03-14 00:53:00,205 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bb21166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:53:00, skipping insertion in model container [2025-03-14 00:53:00,205 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 12:53:00" (1/1) ... [2025-03-14 00:53:00,233 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 00:53:00,355 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-03-14 00:53:00,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 00:53:00,495 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 00:53:00,503 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-03-14 00:53:00,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 00:53:00,575 INFO L204 MainTranslator]: Completed translation [2025-03-14 00:53:00,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:53:00 WrapperNode [2025-03-14 00:53:00,576 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 00:53:00,576 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 00:53:00,577 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 00:53:00,577 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 00:53:00,582 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:53:00" (1/1) ... [2025-03-14 00:53:00,588 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:53:00" (1/1) ... [2025-03-14 00:53:00,600 INFO L138 Inliner]: procedures = 175, calls = 39, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2025-03-14 00:53:00,600 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 00:53:00,600 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 00:53:00,600 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 00:53:00,600 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 00:53:00,604 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:53:00" (1/1) ... [2025-03-14 00:53:00,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:53:00" (1/1) ... [2025-03-14 00:53:00,606 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:53:00" (1/1) ... [2025-03-14 00:53:00,614 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-14 00:53:00,614 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:53:00" (1/1) ... [2025-03-14 00:53:00,614 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:53:00" (1/1) ... [2025-03-14 00:53:00,618 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:53:00" (1/1) ... [2025-03-14 00:53:00,618 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:53:00" (1/1) ... [2025-03-14 00:53:00,619 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:53:00" (1/1) ... [2025-03-14 00:53:00,620 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:53:00" (1/1) ... [2025-03-14 00:53:00,621 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 00:53:00,621 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 00:53:00,621 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 00:53:00,621 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 00:53:00,622 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:53:00" (1/1) ... [2025-03-14 00:53:00,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 00:53:00,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 00:53:00,666 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) [2025-03-14 00:53:00,668 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 [2025-03-14 00:53:00,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-14 00:53:00,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 00:53:00,686 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-14 00:53:00,686 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-14 00:53:00,686 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-14 00:53:00,686 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-14 00:53:00,686 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-14 00:53:00,686 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-14 00:53:00,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-14 00:53:00,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-14 00:53:00,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 00:53:00,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 00:53:00,687 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-14 00:53:00,761 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 00:53:00,762 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 00:53:00,861 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 00:53:00,862 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 00:53:00,862 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 00:53:00,973 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 00:53:00,973 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:53:00 BoogieIcfgContainer [2025-03-14 00:53:00,973 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 00:53:00,975 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 00:53:00,975 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 00:53:00,982 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 00:53:00,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 12:53:00" (1/3) ... [2025-03-14 00:53:00,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d38cf73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 12:53:00, skipping insertion in model container [2025-03-14 00:53:00,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:53:00" (2/3) ... [2025-03-14 00:53:00,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d38cf73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 12:53:00, skipping insertion in model container [2025-03-14 00:53:00,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:53:00" (3/3) ... [2025-03-14 00:53:00,983 INFO L128 eAbstractionObserver]: Analyzing ICFG safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-03-14 00:53:00,994 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 00:53:00,995 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i that has 4 procedures, 37 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-14 00:53:00,996 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 00:53:01,051 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 00:53:01,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 37 transitions, 86 flow [2025-03-14 00:53:01,126 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2025-03-14 00:53:01,128 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 00:53:01,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2025-03-14 00:53:01,132 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 37 transitions, 86 flow [2025-03-14 00:53:01,138 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2025-03-14 00:53:01,146 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 00:53:01,158 INFO L333 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;@6dd25ced, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 00:53:01,159 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-14 00:53:01,168 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 00:53:01,168 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2025-03-14 00:53:01,168 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 00:53:01,168 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:53:01,169 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:53:01,169 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 00:53:01,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:53:01,174 INFO L85 PathProgramCache]: Analyzing trace with hash 164889700, now seen corresponding path program 1 times [2025-03-14 00:53:01,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:53:01,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011837921] [2025-03-14 00:53:01,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:53:01,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:53:01,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-14 00:53:01,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-14 00:53:01,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:53:01,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:53:01,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:53:01,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:53:01,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011837921] [2025-03-14 00:53:01,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011837921] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:53:01,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:53:01,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 00:53:01,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127416041] [2025-03-14 00:53:01,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:53:01,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 00:53:01,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:53:01,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 00:53:01,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-14 00:53:01,570 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2025-03-14 00:53:01,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2025-03-14 00:53:01,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:53:01,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2025-03-14 00:53:01,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:53:01,964 INFO L124 PetriNetUnfolderBase]: 2651/4211 cut-off events. [2025-03-14 00:53:01,964 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2025-03-14 00:53:01,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8238 conditions, 4211 events. 2651/4211 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 23650 event pairs, 425 based on Foata normal form. 180/4380 useless extension candidates. Maximal degree in co-relation 8227. Up to 2161 conditions per place. [2025-03-14 00:53:01,994 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 51 selfloop transitions, 5 changer transitions 1/62 dead transitions. [2025-03-14 00:53:01,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 62 transitions, 253 flow [2025-03-14 00:53:01,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-14 00:53:01,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-14 00:53:02,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2025-03-14 00:53:02,006 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6418918918918919 [2025-03-14 00:53:02,008 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 4 states and 95 transitions. [2025-03-14 00:53:02,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 62 transitions, 253 flow [2025-03-14 00:53:02,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 62 transitions, 248 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-14 00:53:02,014 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 102 flow [2025-03-14 00:53:02,017 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2025-03-14 00:53:02,020 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2025-03-14 00:53:02,020 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 102 flow [2025-03-14 00:53:02,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2025-03-14 00:53:02,020 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:53:02,020 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:53:02,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 00:53:02,021 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 00:53:02,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:53:02,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1289543300, now seen corresponding path program 1 times [2025-03-14 00:53:02,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:53:02,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282109695] [2025-03-14 00:53:02,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:53:02,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:53:02,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-14 00:53:02,040 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-14 00:53:02,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:53:02,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:53:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:53:02,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:53:02,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282109695] [2025-03-14 00:53:02,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282109695] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:53:02,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:53:02,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 00:53:02,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262948246] [2025-03-14 00:53:02,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:53:02,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 00:53:02,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:53:02,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 00:53:02,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-14 00:53:02,171 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2025-03-14 00:53:02,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-14 00:53:02,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:53:02,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2025-03-14 00:53:02,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:53:02,419 INFO L124 PetriNetUnfolderBase]: 1587/2539 cut-off events. [2025-03-14 00:53:02,420 INFO L125 PetriNetUnfolderBase]: For 524/524 co-relation queries the response was YES. [2025-03-14 00:53:02,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5855 conditions, 2539 events. 1587/2539 cut-off events. For 524/524 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 12541 event pairs, 267 based on Foata normal form. 132/2660 useless extension candidates. Maximal degree in co-relation 5843. Up to 804 conditions per place. [2025-03-14 00:53:02,447 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 65 selfloop transitions, 8 changer transitions 1/79 dead transitions. [2025-03-14 00:53:02,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 79 transitions, 361 flow [2025-03-14 00:53:02,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 00:53:02,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 00:53:02,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2025-03-14 00:53:02,450 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.654054054054054 [2025-03-14 00:53:02,451 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 102 flow. Second operand 5 states and 121 transitions. [2025-03-14 00:53:02,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 79 transitions, 361 flow [2025-03-14 00:53:02,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 79 transitions, 351 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-14 00:53:02,457 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 142 flow [2025-03-14 00:53:02,457 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2025-03-14 00:53:02,460 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2025-03-14 00:53:02,460 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 142 flow [2025-03-14 00:53:02,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-14 00:53:02,460 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:53:02,460 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:53:02,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-14 00:53:02,460 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 00:53:02,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:53:02,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1239301268, now seen corresponding path program 1 times [2025-03-14 00:53:02,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:53:02,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560136292] [2025-03-14 00:53:02,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:53:02,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:53:02,472 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-14 00:53:02,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 00:53:02,483 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:53:02,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:53:02,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:53:02,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:53:02,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560136292] [2025-03-14 00:53:02,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560136292] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:53:02,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:53:02,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 00:53:02,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54590061] [2025-03-14 00:53:02,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:53:02,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 00:53:02,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:53:02,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 00:53:02,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-14 00:53:02,585 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2025-03-14 00:53:02,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2025-03-14 00:53:02,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:53:02,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2025-03-14 00:53:02,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:53:02,796 INFO L124 PetriNetUnfolderBase]: 991/1555 cut-off events. [2025-03-14 00:53:02,797 INFO L125 PetriNetUnfolderBase]: For 1002/1002 co-relation queries the response was YES. [2025-03-14 00:53:02,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3959 conditions, 1555 events. 991/1555 cut-off events. For 1002/1002 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6774 event pairs, 237 based on Foata normal form. 52/1596 useless extension candidates. Maximal degree in co-relation 3945. Up to 568 conditions per place. [2025-03-14 00:53:02,804 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 55 selfloop transitions, 11 changer transitions 1/72 dead transitions. [2025-03-14 00:53:02,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 72 transitions, 356 flow [2025-03-14 00:53:02,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 00:53:02,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 00:53:02,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2025-03-14 00:53:02,806 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5540540540540541 [2025-03-14 00:53:02,807 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 142 flow. Second operand 6 states and 123 transitions. [2025-03-14 00:53:02,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 72 transitions, 356 flow [2025-03-14 00:53:02,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 72 transitions, 331 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-03-14 00:53:02,816 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 156 flow [2025-03-14 00:53:02,816 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2025-03-14 00:53:02,817 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2025-03-14 00:53:02,817 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 156 flow [2025-03-14 00:53:02,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2025-03-14 00:53:02,818 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:53:02,818 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:53:02,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-14 00:53:02,818 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 00:53:02,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:53:02,819 INFO L85 PathProgramCache]: Analyzing trace with hash -208776792, now seen corresponding path program 1 times [2025-03-14 00:53:02,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:53:02,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518750633] [2025-03-14 00:53:02,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:53:02,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:53:02,828 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-14 00:53:02,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-14 00:53:02,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:53:02,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:53:03,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:53:03,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:53:03,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518750633] [2025-03-14 00:53:03,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518750633] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:53:03,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:53:03,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-14 00:53:03,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516939801] [2025-03-14 00:53:03,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:53:03,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 00:53:03,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:53:03,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 00:53:03,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-14 00:53:03,023 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2025-03-14 00:53:03,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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) [2025-03-14 00:53:03,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:53:03,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2025-03-14 00:53:03,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:53:03,361 INFO L124 PetriNetUnfolderBase]: 1687/2643 cut-off events. [2025-03-14 00:53:03,361 INFO L125 PetriNetUnfolderBase]: For 2206/2206 co-relation queries the response was YES. [2025-03-14 00:53:03,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7008 conditions, 2643 events. 1687/2643 cut-off events. For 2206/2206 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12908 event pairs, 351 based on Foata normal form. 16/2653 useless extension candidates. Maximal degree in co-relation 6993. Up to 916 conditions per place. [2025-03-14 00:53:03,371 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 50 selfloop transitions, 5 changer transitions 55/114 dead transitions. [2025-03-14 00:53:03,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 114 transitions, 706 flow [2025-03-14 00:53:03,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-14 00:53:03,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-14 00:53:03,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2025-03-14 00:53:03,373 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2025-03-14 00:53:03,373 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 156 flow. Second operand 9 states and 164 transitions. [2025-03-14 00:53:03,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 114 transitions, 706 flow [2025-03-14 00:53:03,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 114 transitions, 528 flow, removed 30 selfloop flow, removed 8 redundant places. [2025-03-14 00:53:03,389 INFO L231 Difference]: Finished difference. Result has 56 places, 37 transitions, 126 flow [2025-03-14 00:53:03,390 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=126, PETRI_PLACES=56, PETRI_TRANSITIONS=37} [2025-03-14 00:53:03,390 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2025-03-14 00:53:03,390 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 37 transitions, 126 flow [2025-03-14 00:53:03,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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) [2025-03-14 00:53:03,391 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:53:03,391 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:53:03,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-14 00:53:03,391 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 00:53:03,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:53:03,392 INFO L85 PathProgramCache]: Analyzing trace with hash 936751806, now seen corresponding path program 2 times [2025-03-14 00:53:03,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:53:03,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776024483] [2025-03-14 00:53:03,392 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 00:53:03,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:53:03,399 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 1 equivalence classes. [2025-03-14 00:53:03,405 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-14 00:53:03,405 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 00:53:03,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:53:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:53:03,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:53:03,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776024483] [2025-03-14 00:53:03,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776024483] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:53:03,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:53:03,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-14 00:53:03,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690596570] [2025-03-14 00:53:03,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:53:03,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 00:53:03,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:53:03,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 00:53:03,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-14 00:53:03,546 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2025-03-14 00:53:03,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 37 transitions, 126 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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) [2025-03-14 00:53:03,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:53:03,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2025-03-14 00:53:03,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:53:03,686 INFO L124 PetriNetUnfolderBase]: 461/753 cut-off events. [2025-03-14 00:53:03,686 INFO L125 PetriNetUnfolderBase]: For 162/164 co-relation queries the response was YES. [2025-03-14 00:53:03,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1864 conditions, 753 events. 461/753 cut-off events. For 162/164 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2561 event pairs, 153 based on Foata normal form. 8/761 useless extension candidates. Maximal degree in co-relation 1855. Up to 604 conditions per place. [2025-03-14 00:53:03,689 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 0 selfloop transitions, 0 changer transitions 47/47 dead transitions. [2025-03-14 00:53:03,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 234 flow [2025-03-14 00:53:03,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 00:53:03,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 00:53:03,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2025-03-14 00:53:03,690 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3918918918918919 [2025-03-14 00:53:03,690 INFO L175 Difference]: Start difference. First operand has 56 places, 37 transitions, 126 flow. Second operand 6 states and 87 transitions. [2025-03-14 00:53:03,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 234 flow [2025-03-14 00:53:03,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 216 flow, removed 4 selfloop flow, removed 6 redundant places. [2025-03-14 00:53:03,692 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2025-03-14 00:53:03,692 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2025-03-14 00:53:03,692 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2025-03-14 00:53:03,692 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2025-03-14 00:53:03,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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) [2025-03-14 00:53:03,695 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-03-14 00:53:03,696 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-03-14 00:53:03,696 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-03-14 00:53:03,696 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-03-14 00:53:03,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-14 00:53:03,696 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2025-03-14 00:53:03,699 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-14 00:53:03,699 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-14 00:53:03,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.03 12:53:03 BasicIcfg [2025-03-14 00:53:03,705 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-14 00:53:03,706 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-14 00:53:03,706 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-14 00:53:03,706 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-14 00:53:03,707 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:53:00" (3/4) ... [2025-03-14 00:53:03,708 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-14 00:53:03,711 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2025-03-14 00:53:03,712 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2025-03-14 00:53:03,712 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2025-03-14 00:53:03,714 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2025-03-14 00:53:03,714 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2025-03-14 00:53:03,714 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-14 00:53:03,714 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-14 00:53:03,773 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-14 00:53:03,773 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-14 00:53:03,773 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-14 00:53:03,774 INFO L158 Benchmark]: Toolchain (without parser) took 3573.24ms. Allocated memory was 142.6MB in the beginning and 335.5MB in the end (delta: 192.9MB). Free memory was 104.2MB in the beginning and 106.9MB in the end (delta: -2.7MB). Peak memory consumption was 191.6MB. Max. memory is 16.1GB. [2025-03-14 00:53:03,775 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory was 127.6MB in the beginning and 127.3MB in the end (delta: 307.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-14 00:53:03,775 INFO L158 Benchmark]: CACSL2BoogieTranslator took 374.65ms. Allocated memory is still 142.6MB. Free memory was 104.2MB in the beginning and 84.0MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-14 00:53:03,775 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.44ms. Allocated memory is still 142.6MB. Free memory was 84.0MB in the beginning and 82.0MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-14 00:53:03,776 INFO L158 Benchmark]: Boogie Preprocessor took 20.48ms. Allocated memory is still 142.6MB. Free memory was 82.0MB in the beginning and 81.0MB in the end (delta: 990.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-14 00:53:03,776 INFO L158 Benchmark]: IcfgBuilder took 352.22ms. Allocated memory is still 142.6MB. Free memory was 81.0MB in the beginning and 59.3MB in the end (delta: 21.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-14 00:53:03,777 INFO L158 Benchmark]: TraceAbstraction took 2730.32ms. Allocated memory was 142.6MB in the beginning and 335.5MB in the end (delta: 192.9MB). Free memory was 58.9MB in the beginning and 112.8MB in the end (delta: -53.9MB). Peak memory consumption was 141.3MB. Max. memory is 16.1GB. [2025-03-14 00:53:03,777 INFO L158 Benchmark]: Witness Printer took 67.17ms. Allocated memory is still 335.5MB. Free memory was 112.8MB in the beginning and 106.9MB in the end (delta: 5.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-14 00:53:03,778 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory was 127.6MB in the beginning and 127.3MB in the end (delta: 307.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 374.65ms. Allocated memory is still 142.6MB. Free memory was 104.2MB in the beginning and 84.0MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.44ms. Allocated memory is still 142.6MB. Free memory was 84.0MB in the beginning and 82.0MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.48ms. Allocated memory is still 142.6MB. Free memory was 82.0MB in the beginning and 81.0MB in the end (delta: 990.2kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 352.22ms. Allocated memory is still 142.6MB. Free memory was 81.0MB in the beginning and 59.3MB in the end (delta: 21.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2730.32ms. Allocated memory was 142.6MB in the beginning and 335.5MB in the end (delta: 192.9MB). Free memory was 58.9MB in the beginning and 112.8MB in the end (delta: -53.9MB). Peak memory consumption was 141.3MB. Max. memory is 16.1GB. * Witness Printer took 67.17ms. Allocated memory is still 335.5MB. Free memory was 112.8MB in the beginning and 106.9MB in the end (delta: 5.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 60 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 345 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 341 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 538 IncrementalHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 4 mSDtfsCounter, 538 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=156occurred in iteration=3, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 476 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-14 00:53:03,794 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 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE