./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.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/safe018_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 e136f4ab00a1c93eb400bb9f2a21b2887cfec20e18dff1c5960bc25f16f1bcad --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:36:19,931 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:36:20,001 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:36:20,007 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:36:20,007 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:36:20,034 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:36:20,034 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:36:20,035 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:36:20,035 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:36:20,038 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:36:20,038 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:36:20,039 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:36:20,039 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:36:20,039 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:36:20,040 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:36:20,040 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:36:20,040 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:36:20,040 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:36:20,040 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:36:20,041 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:36:20,041 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:36:20,043 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:36:20,044 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:36:20,044 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:36:20,044 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:36:20,044 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:36:20,044 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:36:20,045 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:36:20,045 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:36:20,045 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:36:20,045 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:36:20,045 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:36:20,046 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:36:20,046 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:36:20,046 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:36:20,046 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:36:20,046 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:36:20,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:36:20,047 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:36:20,047 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:36:20,048 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:36:20,055 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:36:20,055 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e136f4ab00a1c93eb400bb9f2a21b2887cfec20e18dff1c5960bc25f16f1bcad [2024-11-22 13:36:20,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:36:20,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:36:20,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:36:20,282 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:36:20,283 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:36:20,284 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-11-22 13:36:21,506 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:36:21,689 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:36:21,690 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-11-22 13:36:21,707 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/574fcc6e2/66dd72358c434c7d8aeba613e67bcf5d/FLAG57db33f26 [2024-11-22 13:36:22,074 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/574fcc6e2/66dd72358c434c7d8aeba613e67bcf5d [2024-11-22 13:36:22,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:36:22,077 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:36:22,078 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:36:22,082 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:36:22,086 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:36:22,086 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:36:22" (1/1) ... [2024-11-22 13:36:22,087 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c2612db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:22, skipping insertion in model container [2024-11-22 13:36:22,088 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:36:22" (1/1) ... [2024-11-22 13:36:22,121 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:36:22,285 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/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-11-22 13:36:22,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:36:22,400 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:36:22,412 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/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-11-22 13:36:22,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:36:22,477 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:36:22,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:22 WrapperNode [2024-11-22 13:36:22,480 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:36:22,481 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:36:22,481 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:36:22,481 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:36:22,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:22" (1/1) ... [2024-11-22 13:36:22,500 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:22" (1/1) ... [2024-11-22 13:36:22,518 INFO L138 Inliner]: procedures = 175, calls = 39, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2024-11-22 13:36:22,519 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:36:22,519 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:36:22,519 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:36:22,519 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:36:22,528 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:22" (1/1) ... [2024-11-22 13:36:22,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:22" (1/1) ... [2024-11-22 13:36:22,531 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:22" (1/1) ... [2024-11-22 13:36:22,548 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]. [2024-11-22 13:36:22,548 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:22" (1/1) ... [2024-11-22 13:36:22,549 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:22" (1/1) ... [2024-11-22 13:36:22,554 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:22" (1/1) ... [2024-11-22 13:36:22,557 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:22" (1/1) ... [2024-11-22 13:36:22,558 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:22" (1/1) ... [2024-11-22 13:36:22,559 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:22" (1/1) ... [2024-11-22 13:36:22,560 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:36:22,561 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:36:22,561 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:36:22,562 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:36:22,562 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:22" (1/1) ... [2024-11-22 13:36:22,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:36:22,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:36:22,592 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) [2024-11-22 13:36:22,595 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 [2024-11-22 13:36:22,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-22 13:36:22,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:36:22,643 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-22 13:36:22,643 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-22 13:36:22,643 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-22 13:36:22,643 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-22 13:36:22,643 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-22 13:36:22,643 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-22 13:36:22,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:36:22,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-22 13:36:22,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:36:22,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:36:22,645 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:36:22,762 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:36:22,764 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:36:22,891 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:36:22,891 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:36:22,962 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:36:22,962 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 13:36:22,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:36:22 BoogieIcfgContainer [2024-11-22 13:36:22,963 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:36:22,965 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:36:22,966 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:36:22,969 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:36:22,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:36:22" (1/3) ... [2024-11-22 13:36:22,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4715934d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:36:22, skipping insertion in model container [2024-11-22 13:36:22,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:22" (2/3) ... [2024-11-22 13:36:22,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4715934d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:36:22, skipping insertion in model container [2024-11-22 13:36:22,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:36:22" (3/3) ... [2024-11-22 13:36:22,972 INFO L112 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-11-22 13:36:22,985 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:36:22,985 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:36:22,985 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:36:23,029 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 13:36:23,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 37 transitions, 86 flow [2024-11-22 13:36:23,093 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-11-22 13:36:23,093 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 13:36:23,099 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 56 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. [2024-11-22 13:36:23,099 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 37 transitions, 86 flow [2024-11-22 13:36:23,105 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2024-11-22 13:36:23,111 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:36:23,117 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;@4dcc3f84, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:36:23,117 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-22 13:36:23,125 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:36:23,125 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-11-22 13:36:23,125 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 13:36:23,125 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:36:23,126 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:36:23,126 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)] === [2024-11-22 13:36:23,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:36:23,132 INFO L85 PathProgramCache]: Analyzing trace with hash -295792102, now seen corresponding path program 1 times [2024-11-22 13:36:23,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:36:23,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971897378] [2024-11-22 13:36:23,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:36:23,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:36:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:36:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:36:23,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:36:23,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971897378] [2024-11-22 13:36:23,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971897378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:36:23,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:36:23,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:36:23,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949072362] [2024-11-22 13:36:23,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:36:23,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:36:23,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:36:23,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:36:23,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:36:23,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-11-22 13:36:23,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2024-11-22 13:36:23,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:36:23,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-11-22 13:36:23,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:36:23,731 INFO L124 PetriNetUnfolderBase]: 291/590 cut-off events. [2024-11-22 13:36:23,731 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-22 13:36:23,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 590 events. 291/590 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3210 event pairs, 58 based on Foata normal form. 27/608 useless extension candidates. Maximal degree in co-relation 1085. Up to 236 conditions per place. [2024-11-22 13:36:23,744 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 25 selfloop transitions, 5 changer transitions 1/46 dead transitions. [2024-11-22 13:36:23,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 169 flow [2024-11-22 13:36:23,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:36:23,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:36:23,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-11-22 13:36:23,754 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7364864864864865 [2024-11-22 13:36:23,756 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 4 states and 109 transitions. [2024-11-22 13:36:23,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 169 flow [2024-11-22 13:36:23,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 13:36:23,761 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 102 flow [2024-11-22 13:36:23,762 INFO L260 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} [2024-11-22 13:36:23,766 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2024-11-22 13:36:23,766 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 102 flow [2024-11-22 13:36:23,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2024-11-22 13:36:23,767 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:36:23,767 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:36:23,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:36:23,768 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)] === [2024-11-22 13:36:23,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:36:23,768 INFO L85 PathProgramCache]: Analyzing trace with hash -942165364, now seen corresponding path program 1 times [2024-11-22 13:36:23,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:36:23,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292906671] [2024-11-22 13:36:23,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:36:23,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:36:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:36:23,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:36:23,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:36:23,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292906671] [2024-11-22 13:36:23,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292906671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:36:23,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:36:23,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:36:23,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350111387] [2024-11-22 13:36:23,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:36:23,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:36:23,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:36:23,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:36:23,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:36:23,929 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-11-22 13:36:23,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2024-11-22 13:36:23,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:36:23,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-11-22 13:36:23,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:36:24,058 INFO L124 PetriNetUnfolderBase]: 249/505 cut-off events. [2024-11-22 13:36:24,061 INFO L125 PetriNetUnfolderBase]: For 173/176 co-relation queries the response was YES. [2024-11-22 13:36:24,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 505 events. 249/505 cut-off events. For 173/176 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2461 event pairs, 15 based on Foata normal form. 28/525 useless extension candidates. Maximal degree in co-relation 1171. Up to 188 conditions per place. [2024-11-22 13:36:24,066 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 31 selfloop transitions, 8 changer transitions 1/55 dead transitions. [2024-11-22 13:36:24,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 245 flow [2024-11-22 13:36:24,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:36:24,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:36:24,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-11-22 13:36:24,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7405405405405405 [2024-11-22 13:36:24,070 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 102 flow. Second operand 5 states and 137 transitions. [2024-11-22 13:36:24,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 245 flow [2024-11-22 13:36:24,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 235 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-22 13:36:24,074 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 142 flow [2024-11-22 13:36:24,074 INFO L260 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} [2024-11-22 13:36:24,074 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2024-11-22 13:36:24,075 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 142 flow [2024-11-22 13:36:24,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2024-11-22 13:36:24,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:36:24,075 INFO L204 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] [2024-11-22 13:36:24,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:36:24,076 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)] === [2024-11-22 13:36:24,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:36:24,076 INFO L85 PathProgramCache]: Analyzing trace with hash -80360774, now seen corresponding path program 1 times [2024-11-22 13:36:24,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:36:24,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009060145] [2024-11-22 13:36:24,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:36:24,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:36:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:36:24,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:36:24,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:36:24,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009060145] [2024-11-22 13:36:24,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009060145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:36:24,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:36:24,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:36:24,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034532836] [2024-11-22 13:36:24,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:36:24,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:36:24,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:36:24,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:36:24,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:36:24,209 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-11-22 13:36:24,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-11-22 13:36:24,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:36:24,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-11-22 13:36:24,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:36:24,324 INFO L124 PetriNetUnfolderBase]: 174/340 cut-off events. [2024-11-22 13:36:24,324 INFO L125 PetriNetUnfolderBase]: For 358/364 co-relation queries the response was YES. [2024-11-22 13:36:24,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 340 events. 174/340 cut-off events. For 358/364 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1273 event pairs, 6 based on Foata normal form. 24/356 useless extension candidates. Maximal degree in co-relation 925. Up to 108 conditions per place. [2024-11-22 13:36:24,327 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 29 selfloop transitions, 11 changer transitions 1/56 dead transitions. [2024-11-22 13:36:24,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 56 transitions, 272 flow [2024-11-22 13:36:24,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:36:24,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:36:24,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-11-22 13:36:24,330 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7072072072072072 [2024-11-22 13:36:24,331 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 142 flow. Second operand 6 states and 157 transitions. [2024-11-22 13:36:24,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 56 transitions, 272 flow [2024-11-22 13:36:24,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 247 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-22 13:36:24,336 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 156 flow [2024-11-22 13:36:24,336 INFO L260 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} [2024-11-22 13:36:24,337 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-11-22 13:36:24,337 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 156 flow [2024-11-22 13:36:24,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-11-22 13:36:24,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:36:24,337 INFO L204 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] [2024-11-22 13:36:24,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:36:24,338 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)] === [2024-11-22 13:36:24,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:36:24,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1224161521, now seen corresponding path program 1 times [2024-11-22 13:36:24,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:36:24,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812827519] [2024-11-22 13:36:24,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:36:24,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:36:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:36:24,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:36:24,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:36:24,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812827519] [2024-11-22 13:36:24,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812827519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:36:24,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:36:24,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 13:36:24,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232309105] [2024-11-22 13:36:24,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:36:24,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:36:24,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:36:24,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:36:24,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:36:24,516 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2024-11-22 13:36:24,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 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) [2024-11-22 13:36:24,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:36:24,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2024-11-22 13:36:24,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:36:24,635 INFO L124 PetriNetUnfolderBase]: 313/636 cut-off events. [2024-11-22 13:36:24,636 INFO L125 PetriNetUnfolderBase]: For 385/396 co-relation queries the response was YES. [2024-11-22 13:36:24,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 636 events. 313/636 cut-off events. For 385/396 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3271 event pairs, 137 based on Foata normal form. 8/581 useless extension candidates. Maximal degree in co-relation 1506. Up to 177 conditions per place. [2024-11-22 13:36:24,639 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 20 selfloop transitions, 3 changer transitions 14/56 dead transitions. [2024-11-22 13:36:24,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 56 transitions, 276 flow [2024-11-22 13:36:24,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:36:24,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:36:24,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-11-22 13:36:24,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6306306306306306 [2024-11-22 13:36:24,641 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 156 flow. Second operand 6 states and 140 transitions. [2024-11-22 13:36:24,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 56 transitions, 276 flow [2024-11-22 13:36:24,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 56 transitions, 212 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-11-22 13:36:24,646 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 114 flow [2024-11-22 13:36:24,647 INFO L260 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=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2024-11-22 13:36:24,648 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-11-22 13:36:24,648 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 114 flow [2024-11-22 13:36:24,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 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) [2024-11-22 13:36:24,649 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:36:24,649 INFO L204 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] [2024-11-22 13:36:24,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:36:24,649 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)] === [2024-11-22 13:36:24,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:36:24,650 INFO L85 PathProgramCache]: Analyzing trace with hash 126961507, now seen corresponding path program 2 times [2024-11-22 13:36:24,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:36:24,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873498061] [2024-11-22 13:36:24,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:36:24,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:36:24,669 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:36:24,669 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:36:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:36:24,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:36:24,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873498061] [2024-11-22 13:36:24,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873498061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:36:24,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:36:24,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:36:24,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484153132] [2024-11-22 13:36:24,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:36:24,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:36:24,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:36:24,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:36:24,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:36:24,783 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-11-22 13:36:24,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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) [2024-11-22 13:36:24,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:36:24,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-11-22 13:36:24,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:36:24,875 INFO L124 PetriNetUnfolderBase]: 184/402 cut-off events. [2024-11-22 13:36:24,875 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-22 13:36:24,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 402 events. 184/402 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1747 event pairs, 71 based on Foata normal form. 8/362 useless extension candidates. Maximal degree in co-relation 815. Up to 139 conditions per place. [2024-11-22 13:36:24,876 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 18 selfloop transitions, 3 changer transitions 14/56 dead transitions. [2024-11-22 13:36:24,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 56 transitions, 228 flow [2024-11-22 13:36:24,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:36:24,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:36:24,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-11-22 13:36:24,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6756756756756757 [2024-11-22 13:36:24,878 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 114 flow. Second operand 6 states and 150 transitions. [2024-11-22 13:36:24,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 56 transitions, 228 flow [2024-11-22 13:36:24,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 212 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-11-22 13:36:24,880 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 116 flow [2024-11-22 13:36:24,880 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2024-11-22 13:36:24,882 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-11-22 13:36:24,883 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 116 flow [2024-11-22 13:36:24,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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) [2024-11-22 13:36:24,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:36:24,883 INFO L204 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] [2024-11-22 13:36:24,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:36:24,884 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:36:24,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:36:24,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1855857059, now seen corresponding path program 3 times [2024-11-22 13:36:24,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:36:24,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115412352] [2024-11-22 13:36:24,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:36:24,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:36:24,900 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:36:24,900 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:36:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:36:25,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:36:25,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115412352] [2024-11-22 13:36:25,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115412352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:36:25,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:36:25,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 13:36:25,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787896828] [2024-11-22 13:36:25,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:36:25,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:36:25,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:36:25,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:36:25,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:36:25,026 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2024-11-22 13:36:25,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-11-22 13:36:25,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:36:25,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2024-11-22 13:36:25,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:36:25,122 INFO L124 PetriNetUnfolderBase]: 116/262 cut-off events. [2024-11-22 13:36:25,123 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-22 13:36:25,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 262 events. 116/262 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 967 event pairs, 26 based on Foata normal form. 8/251 useless extension candidates. Maximal degree in co-relation 535. Up to 98 conditions per place. [2024-11-22 13:36:25,124 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 0 selfloop transitions, 0 changer transitions 47/47 dead transitions. [2024-11-22 13:36:25,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 194 flow [2024-11-22 13:36:25,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:36:25,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:36:25,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-11-22 13:36:25,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5752895752895753 [2024-11-22 13:36:25,125 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 116 flow. Second operand 7 states and 149 transitions. [2024-11-22 13:36:25,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 194 flow [2024-11-22 13:36:25,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 184 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-22 13:36:25,126 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-11-22 13:36:25,126 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=43, 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=7, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2024-11-22 13:36:25,127 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2024-11-22 13:36:25,128 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-11-22 13:36:25,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-11-22 13:36:25,130 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-22 13:36:25,130 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-22 13:36:25,130 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-22 13:36:25,131 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-22 13:36:25,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 13:36:25,131 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2024-11-22 13:36:25,134 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-22 13:36:25,134 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 13:36:25,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:36:25 BasicIcfg [2024-11-22 13:36:25,142 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 13:36:25,142 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 13:36:25,142 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 13:36:25,142 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 13:36:25,142 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:36:22" (3/4) ... [2024-11-22 13:36:25,146 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 13:36:25,148 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-11-22 13:36:25,148 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-11-22 13:36:25,148 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-11-22 13:36:25,152 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2024-11-22 13:36:25,153 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-22 13:36:25,153 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-22 13:36:25,153 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-22 13:36:25,224 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 13:36:25,226 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 13:36:25,226 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 13:36:25,227 INFO L158 Benchmark]: Toolchain (without parser) took 3149.25ms. Allocated memory was 172.0MB in the beginning and 247.5MB in the end (delta: 75.5MB). Free memory was 116.1MB in the beginning and 124.2MB in the end (delta: -8.1MB). Peak memory consumption was 69.7MB. Max. memory is 16.1GB. [2024-11-22 13:36:25,227 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 172.0MB. Free memory is still 139.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 13:36:25,227 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.75ms. Allocated memory is still 172.0MB. Free memory was 116.1MB in the beginning and 93.4MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-22 13:36:25,227 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.97ms. Allocated memory is still 172.0MB. Free memory was 93.4MB in the beginning and 91.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 13:36:25,227 INFO L158 Benchmark]: Boogie Preprocessor took 41.53ms. Allocated memory is still 172.0MB. Free memory was 91.3MB in the beginning and 89.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 13:36:25,227 INFO L158 Benchmark]: RCFGBuilder took 402.26ms. Allocated memory is still 172.0MB. Free memory was 89.2MB in the beginning and 70.0MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-22 13:36:25,228 INFO L158 Benchmark]: TraceAbstraction took 2176.11ms. Allocated memory was 172.0MB in the beginning and 247.5MB in the end (delta: 75.5MB). Free memory was 69.2MB in the beginning and 128.4MB in the end (delta: -59.2MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2024-11-22 13:36:25,228 INFO L158 Benchmark]: Witness Printer took 84.30ms. Allocated memory is still 247.5MB. Free memory was 128.4MB in the beginning and 124.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 13:36:25,229 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 172.0MB. Free memory is still 139.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 401.75ms. Allocated memory is still 172.0MB. Free memory was 116.1MB in the beginning and 93.4MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.97ms. Allocated memory is still 172.0MB. Free memory was 93.4MB in the beginning and 91.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.53ms. Allocated memory is still 172.0MB. Free memory was 91.3MB in the beginning and 89.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 402.26ms. Allocated memory is still 172.0MB. Free memory was 89.2MB in the beginning and 70.0MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2176.11ms. Allocated memory was 172.0MB in the beginning and 247.5MB in the end (delta: 75.5MB). Free memory was 69.2MB in the beginning and 128.4MB in the end (delta: -59.2MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. * Witness Printer took 84.30ms. Allocated memory is still 247.5MB. Free memory was 128.4MB in the beginning and 124.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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: 2.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 253 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 224 mSDsluCounter, 118 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 99 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 454 IncrementalHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 19 mSDtfsCounter, 454 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=156occurred in iteration=3, InterpolantAutomatonStates: 34, 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, 0.9s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 565 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-22 13:36:25,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE