./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/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 4a390ef5 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 /storage/repos/ultimate/releaseScripts/default/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 0.2.5-dev-4a390ef-m [2024-10-24 12:17:59,577 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:17:59,652 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:17:59,660 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:17:59,661 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:17:59,693 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:17:59,694 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:17:59,694 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:17:59,695 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:17:59,696 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:17:59,697 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:17:59,697 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:17:59,698 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:17:59,698 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:17:59,698 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:17:59,699 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:17:59,699 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:17:59,699 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:17:59,700 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:17:59,700 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:17:59,700 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:17:59,701 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:17:59,701 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:17:59,701 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:17:59,702 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:17:59,702 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:17:59,702 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:17:59,703 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:17:59,703 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:17:59,703 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:17:59,704 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:17:59,704 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:17:59,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:17:59,704 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:17:59,705 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:17:59,705 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:17:59,705 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:17:59,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:17:59,706 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:17:59,706 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:17:59,706 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:17:59,709 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:17:59,709 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e02ca79ae11b312cb156178ccd52c5da7b51884a938996d16b5a625457869bce [2024-10-24 12:17:59,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:17:59,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:17:59,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:17:59,999 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:18:00,000 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:18:00,002 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-10-24 12:18:01,529 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:18:01,818 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:18:01,819 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-10-24 12:18:01,839 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78fc5fbaa/f95f3ad61c2f4a619899a46b709c2431/FLAG3f54f7582 [2024-10-24 12:18:01,855 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78fc5fbaa/f95f3ad61c2f4a619899a46b709c2431 [2024-10-24 12:18:01,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:18:01,859 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:18:01,860 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:18:01,860 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:18:01,865 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:18:01,865 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:18:01" (1/1) ... [2024-10-24 12:18:01,866 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50dc46e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:01, skipping insertion in model container [2024-10-24 12:18:01,866 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:18:01" (1/1) ... [2024-10-24 12:18:01,911 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:18:02,102 WARN L248 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] [2024-10-24 12:18:02,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:18:02,294 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:18:02,306 WARN L248 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] [2024-10-24 12:18:02,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:18:02,396 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:18:02,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:02 WrapperNode [2024-10-24 12:18:02,397 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:18:02,398 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:18:02,398 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:18:02,398 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:18:02,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:02" (1/1) ... [2024-10-24 12:18:02,429 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:02" (1/1) ... [2024-10-24 12:18:02,458 INFO L138 Inliner]: procedures = 175, calls = 39, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2024-10-24 12:18:02,459 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:18:02,460 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:18:02,460 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:18:02,461 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:18:02,471 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:02" (1/1) ... [2024-10-24 12:18:02,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:02" (1/1) ... [2024-10-24 12:18:02,474 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:02" (1/1) ... [2024-10-24 12:18:02,495 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]. [2024-10-24 12:18:02,495 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:02" (1/1) ... [2024-10-24 12:18:02,496 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:02" (1/1) ... [2024-10-24 12:18:02,500 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:02" (1/1) ... [2024-10-24 12:18:02,502 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:02" (1/1) ... [2024-10-24 12:18:02,503 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:02" (1/1) ... [2024-10-24 12:18:02,505 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:02" (1/1) ... [2024-10-24 12:18:02,507 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:18:02,509 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:18:02,509 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:18:02,509 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:18:02,510 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:02" (1/1) ... [2024-10-24 12:18:02,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:18:02,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:18:02,550 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) [2024-10-24 12:18:02,554 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 [2024-10-24 12:18:02,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 12:18:02,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:18:02,611 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-24 12:18:02,611 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-24 12:18:02,611 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-24 12:18:02,612 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-24 12:18:02,612 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-24 12:18:02,614 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-24 12:18:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:18:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 12:18:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:18:02,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:18:02,616 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 12:18:02,756 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:18:02,759 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:18:02,923 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:18:02,923 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:18:03,040 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:18:03,044 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 12:18:03,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:18:03 BoogieIcfgContainer [2024-10-24 12:18:03,045 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:18:03,047 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:18:03,049 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:18:03,054 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:18:03,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:18:01" (1/3) ... [2024-10-24 12:18:03,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0d03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:18:03, skipping insertion in model container [2024-10-24 12:18:03,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:02" (2/3) ... [2024-10-24 12:18:03,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0d03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:18:03, skipping insertion in model container [2024-10-24 12:18:03,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:18:03" (3/3) ... [2024-10-24 12:18:03,058 INFO L112 eAbstractionObserver]: Analyzing ICFG safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-10-24 12:18:03,113 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:18:03,114 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:18:03,114 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:18:03,200 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 12:18:03,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 37 transitions, 86 flow [2024-10-24 12:18:03,254 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-10-24 12:18:03,254 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:18:03,258 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 58 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. [2024-10-24 12:18:03,258 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 37 transitions, 86 flow [2024-10-24 12:18:03,262 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2024-10-24 12:18:03,276 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:18:03,284 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;@2a566b5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:18:03,285 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-24 12:18:03,303 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:18:03,303 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-10-24 12:18:03,303 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:18:03,304 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:18:03,304 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:18:03,305 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)] === [2024-10-24 12:18:03,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:18:03,312 INFO L85 PathProgramCache]: Analyzing trace with hash -921715653, now seen corresponding path program 1 times [2024-10-24 12:18:03,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:18:03,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131228369] [2024-10-24 12:18:03,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:18:03,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:18:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:18:03,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:18:03,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:18:03,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131228369] [2024-10-24 12:18:03,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131228369] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:18:03,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:18:03,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:18:03,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656231610] [2024-10-24 12:18:03,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:18:03,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:18:03,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:18:03,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:18:03,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:18:03,974 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-10-24 12:18:03,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2024-10-24 12:18:03,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:18:03,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-10-24 12:18:03,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:18:04,457 INFO L124 PetriNetUnfolderBase]: 759/1540 cut-off events. [2024-10-24 12:18:04,458 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-24 12:18:04,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2796 conditions, 1540 events. 759/1540 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 10918 event pairs, 262 based on Foata normal form. 52/1549 useless extension candidates. Maximal degree in co-relation 2785. Up to 647 conditions per place. [2024-10-24 12:18:04,480 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 27 selfloop transitions, 5 changer transitions 29/74 dead transitions. [2024-10-24 12:18:04,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 74 transitions, 285 flow [2024-10-24 12:18:04,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 12:18:04,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 12:18:04,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-10-24 12:18:04,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6756756756756757 [2024-10-24 12:18:04,496 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 7 states and 175 transitions. [2024-10-24 12:18:04,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 74 transitions, 285 flow [2024-10-24 12:18:04,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 74 transitions, 280 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 12:18:04,505 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 117 flow [2024-10-24 12:18:04,507 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=7, PETRI_FLOW=117, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2024-10-24 12:18:04,512 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2024-10-24 12:18:04,513 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 117 flow [2024-10-24 12:18:04,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2024-10-24 12:18:04,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:18:04,514 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:18:04,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:18:04,514 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)] === [2024-10-24 12:18:04,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:18:04,515 INFO L85 PathProgramCache]: Analyzing trace with hash -705700838, now seen corresponding path program 1 times [2024-10-24 12:18:04,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:18:04,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322402323] [2024-10-24 12:18:04,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:18:04,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:18:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:18:04,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:18:04,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:18:04,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322402323] [2024-10-24 12:18:04,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322402323] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:18:04,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:18:04,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:18:04,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999077673] [2024-10-24 12:18:04,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:18:04,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:18:04,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:18:04,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:18:04,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:18:04,789 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-10-24 12:18:04,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-10-24 12:18:04,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:18:04,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-10-24 12:18:04,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:18:05,166 INFO L124 PetriNetUnfolderBase]: 660/1371 cut-off events. [2024-10-24 12:18:05,166 INFO L125 PetriNetUnfolderBase]: For 1352/1361 co-relation queries the response was YES. [2024-10-24 12:18:05,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3581 conditions, 1371 events. 660/1371 cut-off events. For 1352/1361 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 9602 event pairs, 117 based on Foata normal form. 58/1419 useless extension candidates. Maximal degree in co-relation 3566. Up to 515 conditions per place. [2024-10-24 12:18:05,180 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 34 selfloop transitions, 7 changer transitions 38/92 dead transitions. [2024-10-24 12:18:05,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 92 transitions, 540 flow [2024-10-24 12:18:05,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 12:18:05,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 12:18:05,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-10-24 12:18:05,185 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6459459459459459 [2024-10-24 12:18:05,185 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 117 flow. Second operand 10 states and 239 transitions. [2024-10-24 12:18:05,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 92 transitions, 540 flow [2024-10-24 12:18:05,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 92 transitions, 510 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-10-24 12:18:05,193 INFO L231 Difference]: Finished difference. Result has 59 places, 38 transitions, 176 flow [2024-10-24 12:18:05,194 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=176, PETRI_PLACES=59, PETRI_TRANSITIONS=38} [2024-10-24 12:18:05,195 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2024-10-24 12:18:05,195 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 38 transitions, 176 flow [2024-10-24 12:18:05,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-10-24 12:18:05,196 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:18:05,197 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:18:05,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 12:18:05,197 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)] === [2024-10-24 12:18:05,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:18:05,198 INFO L85 PathProgramCache]: Analyzing trace with hash -181861764, now seen corresponding path program 1 times [2024-10-24 12:18:05,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:18:05,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119572988] [2024-10-24 12:18:05,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:18:05,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:18:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:18:05,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:18:05,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:18:05,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119572988] [2024-10-24 12:18:05,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119572988] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:18:05,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:18:05,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:18:05,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927014828] [2024-10-24 12:18:05,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:18:05,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:18:05,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:18:05,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:18:05,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:18:05,377 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-10-24 12:18:05,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 38 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-10-24 12:18:05,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:18:05,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-10-24 12:18:05,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:18:05,673 INFO L124 PetriNetUnfolderBase]: 544/1168 cut-off events. [2024-10-24 12:18:05,674 INFO L125 PetriNetUnfolderBase]: For 2249/2255 co-relation queries the response was YES. [2024-10-24 12:18:05,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3368 conditions, 1168 events. 544/1168 cut-off events. For 2249/2255 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7951 event pairs, 173 based on Foata normal form. 38/1189 useless extension candidates. Maximal degree in co-relation 3346. Up to 433 conditions per place. [2024-10-24 12:18:05,704 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 40 selfloop transitions, 7 changer transitions 32/92 dead transitions. [2024-10-24 12:18:05,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 92 transitions, 589 flow [2024-10-24 12:18:05,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 12:18:05,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 12:18:05,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 232 transitions. [2024-10-24 12:18:05,707 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6270270270270271 [2024-10-24 12:18:05,707 INFO L175 Difference]: Start difference. First operand has 59 places, 38 transitions, 176 flow. Second operand 10 states and 232 transitions. [2024-10-24 12:18:05,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 92 transitions, 589 flow [2024-10-24 12:18:05,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 92 transitions, 541 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-10-24 12:18:05,717 INFO L231 Difference]: Finished difference. Result has 66 places, 41 transitions, 232 flow [2024-10-24 12:18:05,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=232, PETRI_PLACES=66, PETRI_TRANSITIONS=41} [2024-10-24 12:18:05,718 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2024-10-24 12:18:05,719 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 41 transitions, 232 flow [2024-10-24 12:18:05,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-10-24 12:18:05,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:18:05,720 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:18:05,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 12:18:05,721 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)] === [2024-10-24 12:18:05,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:18:05,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1249945243, now seen corresponding path program 1 times [2024-10-24 12:18:05,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:18:05,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350690952] [2024-10-24 12:18:05,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:18:05,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:18:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:18:05,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:18:05,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:18:05,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350690952] [2024-10-24 12:18:05,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350690952] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:18:05,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:18:05,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:18:05,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788114910] [2024-10-24 12:18:05,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:18:05,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:18:05,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:18:05,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:18:05,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:18:05,878 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-10-24 12:18:05,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 41 transitions, 232 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) [2024-10-24 12:18:05,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:18:05,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-10-24 12:18:05,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:18:06,054 INFO L124 PetriNetUnfolderBase]: 288/725 cut-off events. [2024-10-24 12:18:06,055 INFO L125 PetriNetUnfolderBase]: For 1273/1291 co-relation queries the response was YES. [2024-10-24 12:18:06,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2051 conditions, 725 events. 288/725 cut-off events. For 1273/1291 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4930 event pairs, 82 based on Foata normal form. 20/705 useless extension candidates. Maximal degree in co-relation 2023. Up to 357 conditions per place. [2024-10-24 12:18:06,066 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 19 selfloop transitions, 3 changer transitions 15/62 dead transitions. [2024-10-24 12:18:06,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 62 transitions, 384 flow [2024-10-24 12:18:06,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 12:18:06,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 12:18:06,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-10-24 12:18:06,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6602316602316602 [2024-10-24 12:18:06,069 INFO L175 Difference]: Start difference. First operand has 66 places, 41 transitions, 232 flow. Second operand 7 states and 171 transitions. [2024-10-24 12:18:06,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 62 transitions, 384 flow [2024-10-24 12:18:06,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 62 transitions, 354 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-10-24 12:18:06,079 INFO L231 Difference]: Finished difference. Result has 65 places, 41 transitions, 233 flow [2024-10-24 12:18:06,079 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=233, PETRI_PLACES=65, PETRI_TRANSITIONS=41} [2024-10-24 12:18:06,082 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 24 predicate places. [2024-10-24 12:18:06,083 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 41 transitions, 233 flow [2024-10-24 12:18:06,083 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) [2024-10-24 12:18:06,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:18:06,083 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:18:06,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 12:18:06,083 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)] === [2024-10-24 12:18:06,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:18:06,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1521150131, now seen corresponding path program 1 times [2024-10-24 12:18:06,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:18:06,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725468363] [2024-10-24 12:18:06,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:18:06,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:18:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:18:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:18:06,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:18:06,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725468363] [2024-10-24 12:18:06,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725468363] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:18:06,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:18:06,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 12:18:06,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934971536] [2024-10-24 12:18:06,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:18:06,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:18:06,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:18:06,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:18:06,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:18:06,277 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 37 [2024-10-24 12:18:06,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 41 transitions, 233 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-10-24 12:18:06,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:18:06,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 37 [2024-10-24 12:18:06,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:18:06,621 INFO L124 PetriNetUnfolderBase]: 765/1609 cut-off events. [2024-10-24 12:18:06,622 INFO L125 PetriNetUnfolderBase]: For 3252/3261 co-relation queries the response was YES. [2024-10-24 12:18:06,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4642 conditions, 1609 events. 765/1609 cut-off events. For 3252/3261 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11476 event pairs, 133 based on Foata normal form. 40/1629 useless extension candidates. Maximal degree in co-relation 4613. Up to 374 conditions per place. [2024-10-24 12:18:06,636 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 41 selfloop transitions, 6 changer transitions 40/99 dead transitions. [2024-10-24 12:18:06,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 99 transitions, 730 flow [2024-10-24 12:18:06,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:18:06,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 12:18:06,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-10-24 12:18:06,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6306306306306306 [2024-10-24 12:18:06,639 INFO L175 Difference]: Start difference. First operand has 65 places, 41 transitions, 233 flow. Second operand 9 states and 210 transitions. [2024-10-24 12:18:06,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 99 transitions, 730 flow [2024-10-24 12:18:06,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 99 transitions, 694 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-10-24 12:18:06,650 INFO L231 Difference]: Finished difference. Result has 67 places, 35 transitions, 190 flow [2024-10-24 12:18:06,651 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=190, PETRI_PLACES=67, PETRI_TRANSITIONS=35} [2024-10-24 12:18:06,652 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 26 predicate places. [2024-10-24 12:18:06,653 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 35 transitions, 190 flow [2024-10-24 12:18:06,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-10-24 12:18:06,654 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:18:06,654 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] [2024-10-24 12:18:06,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 12:18:06,654 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)] === [2024-10-24 12:18:06,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:18:06,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1395503376, now seen corresponding path program 1 times [2024-10-24 12:18:06,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:18:06,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021794288] [2024-10-24 12:18:06,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:18:06,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:18:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:18:06,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:18:06,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:18:06,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021794288] [2024-10-24 12:18:06,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021794288] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:18:06,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:18:06,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:18:06,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682673221] [2024-10-24 12:18:06,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:18:06,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:18:06,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:18:06,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:18:06,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:18:06,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2024-10-24 12:18:06,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 35 transitions, 190 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 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) [2024-10-24 12:18:06,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:18:06,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2024-10-24 12:18:06,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:18:07,009 INFO L124 PetriNetUnfolderBase]: 304/710 cut-off events. [2024-10-24 12:18:07,010 INFO L125 PetriNetUnfolderBase]: For 1873/1919 co-relation queries the response was YES. [2024-10-24 12:18:07,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2084 conditions, 710 events. 304/710 cut-off events. For 1873/1919 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4575 event pairs, 88 based on Foata normal form. 20/707 useless extension candidates. Maximal degree in co-relation 2055. Up to 216 conditions per place. [2024-10-24 12:18:07,015 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 19 selfloop transitions, 3 changer transitions 20/56 dead transitions. [2024-10-24 12:18:07,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 56 transitions, 369 flow [2024-10-24 12:18:07,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:18:07,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:18:07,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-10-24 12:18:07,017 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-10-24 12:18:07,017 INFO L175 Difference]: Start difference. First operand has 67 places, 35 transitions, 190 flow. Second operand 6 states and 144 transitions. [2024-10-24 12:18:07,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 56 transitions, 369 flow [2024-10-24 12:18:07,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 274 flow, removed 18 selfloop flow, removed 15 redundant places. [2024-10-24 12:18:07,024 INFO L231 Difference]: Finished difference. Result has 56 places, 31 transitions, 114 flow [2024-10-24 12:18:07,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=56, PETRI_TRANSITIONS=31} [2024-10-24 12:18:07,027 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2024-10-24 12:18:07,027 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 31 transitions, 114 flow [2024-10-24 12:18:07,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 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) [2024-10-24 12:18:07,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:18:07,028 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] [2024-10-24 12:18:07,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 12:18:07,028 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 12:18:07,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:18:07,029 INFO L85 PathProgramCache]: Analyzing trace with hash 152487610, now seen corresponding path program 2 times [2024-10-24 12:18:07,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:18:07,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877362342] [2024-10-24 12:18:07,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:18:07,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:18:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:18:07,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:18:07,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:18:07,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877362342] [2024-10-24 12:18:07,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877362342] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:18:07,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:18:07,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:18:07,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122248211] [2024-10-24 12:18:07,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:18:07,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:18:07,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:18:07,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:18:07,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:18:07,146 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-10-24 12:18:07,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 31 transitions, 114 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) [2024-10-24 12:18:07,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:18:07,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-10-24 12:18:07,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:18:07,226 INFO L124 PetriNetUnfolderBase]: 278/565 cut-off events. [2024-10-24 12:18:07,227 INFO L125 PetriNetUnfolderBase]: For 92/102 co-relation queries the response was YES. [2024-10-24 12:18:07,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1152 conditions, 565 events. 278/565 cut-off events. For 92/102 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3024 event pairs, 70 based on Foata normal form. 27/565 useless extension candidates. Maximal degree in co-relation 1131. Up to 261 conditions per place. [2024-10-24 12:18:07,230 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 19 selfloop transitions, 4 changer transitions 4/42 dead transitions. [2024-10-24 12:18:07,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 42 transitions, 190 flow [2024-10-24 12:18:07,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:18:07,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 12:18:07,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-10-24 12:18:07,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7094594594594594 [2024-10-24 12:18:07,232 INFO L175 Difference]: Start difference. First operand has 56 places, 31 transitions, 114 flow. Second operand 4 states and 105 transitions. [2024-10-24 12:18:07,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 42 transitions, 190 flow [2024-10-24 12:18:07,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 158 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-10-24 12:18:07,234 INFO L231 Difference]: Finished difference. Result has 48 places, 33 transitions, 110 flow [2024-10-24 12:18:07,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=48, PETRI_TRANSITIONS=33} [2024-10-24 12:18:07,235 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2024-10-24 12:18:07,235 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 33 transitions, 110 flow [2024-10-24 12:18:07,236 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) [2024-10-24 12:18:07,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:18:07,236 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] [2024-10-24 12:18:07,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 12:18:07,236 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 12:18:07,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:18:07,237 INFO L85 PathProgramCache]: Analyzing trace with hash 651729301, now seen corresponding path program 1 times [2024-10-24 12:18:07,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:18:07,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218272034] [2024-10-24 12:18:07,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:18:07,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:18:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:18:07,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:18:07,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:18:07,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218272034] [2024-10-24 12:18:07,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218272034] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:18:07,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:18:07,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:18:07,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356361542] [2024-10-24 12:18:07,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:18:07,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:18:07,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:18:07,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:18:07,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:18:07,344 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-10-24 12:18:07,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 33 transitions, 110 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) [2024-10-24 12:18:07,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:18:07,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-10-24 12:18:07,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:18:07,430 INFO L124 PetriNetUnfolderBase]: 198/404 cut-off events. [2024-10-24 12:18:07,430 INFO L125 PetriNetUnfolderBase]: For 143/188 co-relation queries the response was YES. [2024-10-24 12:18:07,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 404 events. 198/404 cut-off events. For 143/188 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1833 event pairs, 22 based on Foata normal form. 27/415 useless extension candidates. Maximal degree in co-relation 946. Up to 161 conditions per place. [2024-10-24 12:18:07,432 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 18 selfloop transitions, 6 changer transitions 8/47 dead transitions. [2024-10-24 12:18:07,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 217 flow [2024-10-24 12:18:07,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:18:07,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:18:07,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-10-24 12:18:07,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6972972972972973 [2024-10-24 12:18:07,434 INFO L175 Difference]: Start difference. First operand has 48 places, 33 transitions, 110 flow. Second operand 5 states and 129 transitions. [2024-10-24 12:18:07,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 217 flow [2024-10-24 12:18:07,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 208 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-24 12:18:07,436 INFO L231 Difference]: Finished difference. Result has 52 places, 33 transitions, 128 flow [2024-10-24 12:18:07,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=128, PETRI_PLACES=52, PETRI_TRANSITIONS=33} [2024-10-24 12:18:07,437 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2024-10-24 12:18:07,437 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 33 transitions, 128 flow [2024-10-24 12:18:07,437 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) [2024-10-24 12:18:07,438 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:18:07,438 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] [2024-10-24 12:18:07,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 12:18:07,438 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 12:18:07,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:18:07,439 INFO L85 PathProgramCache]: Analyzing trace with hash -797204846, now seen corresponding path program 1 times [2024-10-24 12:18:07,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:18:07,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160073461] [2024-10-24 12:18:07,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:18:07,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:18:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:18:07,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:18:07,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:18:07,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160073461] [2024-10-24 12:18:07,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160073461] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:18:07,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:18:07,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:18:07,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290135966] [2024-10-24 12:18:07,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:18:07,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:18:07,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:18:07,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:18:07,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:18:07,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-10-24 12:18:07,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 33 transitions, 128 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) [2024-10-24 12:18:07,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:18:07,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-10-24 12:18:07,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:18:07,650 INFO L124 PetriNetUnfolderBase]: 76/162 cut-off events. [2024-10-24 12:18:07,650 INFO L125 PetriNetUnfolderBase]: For 165/214 co-relation queries the response was YES. [2024-10-24 12:18:07,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 162 events. 76/162 cut-off events. For 165/214 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 475 event pairs, 2 based on Foata normal form. 16/174 useless extension candidates. Maximal degree in co-relation 418. Up to 56 conditions per place. [2024-10-24 12:18:07,651 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 0 selfloop transitions, 0 changer transitions 40/40 dead transitions. [2024-10-24 12:18:07,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 40 transitions, 198 flow [2024-10-24 12:18:07,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:18:07,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:18:07,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-10-24 12:18:07,654 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-10-24 12:18:07,654 INFO L175 Difference]: Start difference. First operand has 52 places, 33 transitions, 128 flow. Second operand 6 states and 144 transitions. [2024-10-24 12:18:07,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 40 transitions, 198 flow [2024-10-24 12:18:07,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 173 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-24 12:18:07,656 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2024-10-24 12:18:07,656 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2024-10-24 12:18:07,657 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2024-10-24 12:18:07,657 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2024-10-24 12:18:07,658 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) [2024-10-24 12:18:07,661 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-10-24 12:18:07,662 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-10-24 12:18:07,662 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-10-24 12:18:07,663 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-10-24 12:18:07,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 12:18:07,663 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:18:07,669 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-24 12:18:07,669 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 12:18:07,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:18:07 BasicIcfg [2024-10-24 12:18:07,679 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 12:18:07,680 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 12:18:07,680 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 12:18:07,680 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 12:18:07,681 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:18:03" (3/4) ... [2024-10-24 12:18:07,683 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-24 12:18:07,686 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-10-24 12:18:07,687 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-10-24 12:18:07,687 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-10-24 12:18:07,692 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2024-10-24 12:18:07,692 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-10-24 12:18:07,692 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-24 12:18:07,693 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-24 12:18:07,793 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 12:18:07,794 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-24 12:18:07,794 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 12:18:07,795 INFO L158 Benchmark]: Toolchain (without parser) took 5936.03ms. Allocated memory was 157.3MB in the beginning and 237.0MB in the end (delta: 79.7MB). Free memory was 122.7MB in the beginning and 175.1MB in the end (delta: -52.3MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. [2024-10-24 12:18:07,795 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 115.3MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 12:18:07,795 INFO L158 Benchmark]: CACSL2BoogieTranslator took 537.42ms. Allocated memory is still 157.3MB. Free memory was 122.2MB in the beginning and 100.3MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-24 12:18:07,795 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.78ms. Allocated memory is still 157.3MB. Free memory was 100.3MB in the beginning and 98.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 12:18:07,796 INFO L158 Benchmark]: Boogie Preprocessor took 46.68ms. Allocated memory is still 157.3MB. Free memory was 98.2MB in the beginning and 96.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 12:18:07,796 INFO L158 Benchmark]: RCFGBuilder took 536.26ms. Allocated memory is still 157.3MB. Free memory was 96.1MB in the beginning and 76.0MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-24 12:18:07,796 INFO L158 Benchmark]: TraceAbstraction took 4631.85ms. Allocated memory was 157.3MB in the beginning and 237.0MB in the end (delta: 79.7MB). Free memory was 75.4MB in the beginning and 179.2MB in the end (delta: -103.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 12:18:07,797 INFO L158 Benchmark]: Witness Printer took 114.08ms. Allocated memory is still 237.0MB. Free memory was 179.2MB in the beginning and 175.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 12:18:07,798 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 115.3MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 537.42ms. Allocated memory is still 157.3MB. Free memory was 122.2MB in the beginning and 100.3MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.78ms. Allocated memory is still 157.3MB. Free memory was 100.3MB in the beginning and 98.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.68ms. Allocated memory is still 157.3MB. Free memory was 98.2MB in the beginning and 96.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 536.26ms. Allocated memory is still 157.3MB. Free memory was 96.1MB in the beginning and 76.0MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4631.85ms. Allocated memory was 157.3MB in the beginning and 237.0MB in the end (delta: 79.7MB). Free memory was 75.4MB in the beginning and 179.2MB in the end (delta: -103.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 114.08ms. Allocated memory is still 237.0MB. Free memory was 179.2MB in the beginning and 175.1MB 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: 4.4s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 342 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 299 mSDsluCounter, 232 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 177 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 766 IncrementalHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 55 mSDtfsCounter, 766 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=233occurred in iteration=4, InterpolantAutomatonStates: 64, 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, 1.5s InterpolantComputationTime, 173 NumberOfCodeBlocks, 173 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 650 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2024-10-24 12:18:07,828 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