./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/safe011_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 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/safe011_tso.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 c5d6625a918041bec3ddf6b8a37ec84fd94f58444755be51392d35f521d3d51e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 14:26:10,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 14:26:10,860 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 14:26:10,866 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 14:26:10,866 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 14:26:10,885 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 14:26:10,886 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 14:26:10,886 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 14:26:10,887 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 14:26:10,887 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 14:26:10,888 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 14:26:10,888 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 14:26:10,889 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 14:26:10,889 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 14:26:10,889 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 14:26:10,890 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 14:26:10,890 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 14:26:10,890 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 14:26:10,891 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 14:26:10,893 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 14:26:10,893 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 14:26:10,895 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 14:26:10,895 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 14:26:10,895 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 14:26:10,896 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 14:26:10,896 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 14:26:10,896 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 14:26:10,896 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 14:26:10,897 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 14:26:10,897 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 14:26:10,897 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 14:26:10,898 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 14:26:10,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:26:10,898 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 14:26:10,899 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 14:26:10,899 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 14:26:10,899 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 14:26:10,900 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 14:26:10,900 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 14:26:10,900 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 14:26:10,900 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 14:26:10,901 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 14:26:10,901 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5d6625a918041bec3ddf6b8a37ec84fd94f58444755be51392d35f521d3d51e [2024-10-14 14:26:11,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 14:26:11,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 14:26:11,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 14:26:11,165 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 14:26:11,166 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 14:26:11,167 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe011_tso.i [2024-10-14 14:26:12,596 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 14:26:12,826 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 14:26:12,827 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe011_tso.i [2024-10-14 14:26:12,842 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a550fab1/476f4d508d7f46ac884261c4d1497df2/FLAG356202375 [2024-10-14 14:26:12,857 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a550fab1/476f4d508d7f46ac884261c4d1497df2 [2024-10-14 14:26:12,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 14:26:12,862 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 14:26:12,863 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 14:26:12,863 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 14:26:12,867 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 14:26:12,868 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:26:12" (1/1) ... [2024-10-14 14:26:12,869 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31b058bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:12, skipping insertion in model container [2024-10-14 14:26:12,869 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:26:12" (1/1) ... [2024-10-14 14:26:12,910 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 14:26:13,123 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/safe011_tso.i[945,958] [2024-10-14 14:26:13,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:26:13,316 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 14:26:13,329 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/safe011_tso.i[945,958] [2024-10-14 14:26:13,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:26:13,401 INFO L204 MainTranslator]: Completed translation [2024-10-14 14:26:13,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:13 WrapperNode [2024-10-14 14:26:13,402 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 14:26:13,403 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 14:26:13,403 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 14:26:13,404 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 14:26:13,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:13" (1/1) ... [2024-10-14 14:26:13,427 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:13" (1/1) ... [2024-10-14 14:26:13,451 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2024-10-14 14:26:13,452 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 14:26:13,452 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 14:26:13,452 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 14:26:13,452 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 14:26:13,463 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:13" (1/1) ... [2024-10-14 14:26:13,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:13" (1/1) ... [2024-10-14 14:26:13,468 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:13" (1/1) ... [2024-10-14 14:26:13,494 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]. [2024-10-14 14:26:13,496 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:13" (1/1) ... [2024-10-14 14:26:13,496 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:13" (1/1) ... [2024-10-14 14:26:13,504 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:13" (1/1) ... [2024-10-14 14:26:13,506 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:13" (1/1) ... [2024-10-14 14:26:13,510 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:13" (1/1) ... [2024-10-14 14:26:13,511 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:13" (1/1) ... [2024-10-14 14:26:13,517 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 14:26:13,518 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 14:26:13,518 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 14:26:13,518 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 14:26:13,519 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:13" (1/1) ... [2024-10-14 14:26:13,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:26:13,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:26:13,556 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) [2024-10-14 14:26:13,563 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 [2024-10-14 14:26:13,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 14:26:13,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 14:26:13,613 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-14 14:26:13,613 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-14 14:26:13,613 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-14 14:26:13,613 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-14 14:26:13,613 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-14 14:26:13,615 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-14 14:26:13,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 14:26:13,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 14:26:13,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 14:26:13,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 14:26:13,617 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 14:26:13,762 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 14:26:13,764 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 14:26:13,890 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 14:26:13,891 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 14:26:13,992 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 14:26:13,992 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-14 14:26:13,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:26:13 BoogieIcfgContainer [2024-10-14 14:26:13,994 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 14:26:13,996 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 14:26:13,997 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 14:26:14,001 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 14:26:14,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:26:12" (1/3) ... [2024-10-14 14:26:14,004 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5e0e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:26:14, skipping insertion in model container [2024-10-14 14:26:14,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:13" (2/3) ... [2024-10-14 14:26:14,004 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5e0e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:26:14, skipping insertion in model container [2024-10-14 14:26:14,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:26:13" (3/3) ... [2024-10-14 14:26:14,006 INFO L112 eAbstractionObserver]: Analyzing ICFG safe011_tso.i [2024-10-14 14:26:14,021 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 14:26:14,022 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 14:26:14,022 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 14:26:14,076 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 14:26:14,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2024-10-14 14:26:14,172 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-10-14 14:26:14,173 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 14:26:14,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-10-14 14:26:14,179 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2024-10-14 14:26:14,183 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-10-14 14:26:14,196 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 14:26:14,204 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;@636ad433, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 14:26:14,205 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-14 14:26:14,224 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 14:26:14,225 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-10-14 14:26:14,225 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 14:26:14,225 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:26:14,226 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:26:14,226 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)] === [2024-10-14 14:26:14,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:26:14,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1547160918, now seen corresponding path program 1 times [2024-10-14 14:26:14,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:26:14,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388543434] [2024-10-14 14:26:14,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:26:14,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:26:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:26:14,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:26:14,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:26:14,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388543434] [2024-10-14 14:26:14,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388543434] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:26:14,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:26:14,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:26:14,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696629388] [2024-10-14 14:26:14,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:26:14,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:26:14,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:26:14,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:26:14,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:26:14,934 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-10-14 14:26:14,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 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) [2024-10-14 14:26:14,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:26:14,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-10-14 14:26:14,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:26:15,432 INFO L124 PetriNetUnfolderBase]: 1153/2253 cut-off events. [2024-10-14 14:26:15,433 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-14 14:26:15,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4099 conditions, 2253 events. 1153/2253 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 16333 event pairs, 332 based on Foata normal form. 76/2274 useless extension candidates. Maximal degree in co-relation 4088. Up to 751 conditions per place. [2024-10-14 14:26:15,454 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 29 selfloop transitions, 6 changer transitions 35/83 dead transitions. [2024-10-14 14:26:15,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 83 transitions, 321 flow [2024-10-14 14:26:15,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 14:26:15,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 14:26:15,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-10-14 14:26:15,468 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6917293233082706 [2024-10-14 14:26:15,470 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 7 states and 184 transitions. [2024-10-14 14:26:15,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 83 transitions, 321 flow [2024-10-14 14:26:15,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 83 transitions, 316 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 14:26:15,479 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 144 flow [2024-10-14 14:26:15,481 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=144, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2024-10-14 14:26:15,486 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-10-14 14:26:15,486 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 144 flow [2024-10-14 14:26:15,487 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) [2024-10-14 14:26:15,487 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:26:15,487 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:26:15,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 14:26:15,487 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)] === [2024-10-14 14:26:15,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:26:15,489 INFO L85 PathProgramCache]: Analyzing trace with hash -447144789, now seen corresponding path program 1 times [2024-10-14 14:26:15,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:26:15,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492067523] [2024-10-14 14:26:15,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:26:15,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:26:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:26:15,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:26:15,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:26:15,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492067523] [2024-10-14 14:26:15,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492067523] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:26:15,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:26:15,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:26:15,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251369243] [2024-10-14 14:26:15,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:26:15,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:26:15,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:26:15,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:26:15,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:26:15,743 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-10-14 14:26:15,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 144 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) [2024-10-14 14:26:15,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:26:15,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-10-14 14:26:15,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:26:16,132 INFO L124 PetriNetUnfolderBase]: 1014/2136 cut-off events. [2024-10-14 14:26:16,132 INFO L125 PetriNetUnfolderBase]: For 2269/2278 co-relation queries the response was YES. [2024-10-14 14:26:16,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5733 conditions, 2136 events. 1014/2136 cut-off events. For 2269/2278 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 15987 event pairs, 149 based on Foata normal form. 79/2174 useless extension candidates. Maximal degree in co-relation 5717. Up to 637 conditions per place. [2024-10-14 14:26:16,184 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 39 selfloop transitions, 10 changer transitions 54/116 dead transitions. [2024-10-14 14:26:16,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 116 transitions, 760 flow [2024-10-14 14:26:16,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 14:26:16,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 14:26:16,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-10-14 14:26:16,187 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6736842105263158 [2024-10-14 14:26:16,187 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 144 flow. Second operand 10 states and 256 transitions. [2024-10-14 14:26:16,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 116 transitions, 760 flow [2024-10-14 14:26:16,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 116 transitions, 702 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 14:26:16,199 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 252 flow [2024-10-14 14:26:16,199 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=252, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2024-10-14 14:26:16,200 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-10-14 14:26:16,200 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 252 flow [2024-10-14 14:26:16,200 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) [2024-10-14 14:26:16,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:26:16,201 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:26:16,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 14:26:16,201 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)] === [2024-10-14 14:26:16,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:26:16,202 INFO L85 PathProgramCache]: Analyzing trace with hash -269828757, now seen corresponding path program 1 times [2024-10-14 14:26:16,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:26:16,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153891805] [2024-10-14 14:26:16,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:26:16,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:26:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:26:16,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:26:16,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:26:16,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153891805] [2024-10-14 14:26:16,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153891805] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:26:16,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:26:16,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:26:16,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283374440] [2024-10-14 14:26:16,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:26:16,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:26:16,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:26:16,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:26:16,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:26:16,356 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-10-14 14:26:16,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 252 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) [2024-10-14 14:26:16,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:26:16,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-10-14 14:26:16,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:26:16,706 INFO L124 PetriNetUnfolderBase]: 856/1714 cut-off events. [2024-10-14 14:26:16,707 INFO L125 PetriNetUnfolderBase]: For 5086/5086 co-relation queries the response was YES. [2024-10-14 14:26:16,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5650 conditions, 1714 events. 856/1714 cut-off events. For 5086/5086 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 11721 event pairs, 171 based on Foata normal form. 40/1714 useless extension candidates. Maximal degree in co-relation 5625. Up to 589 conditions per place. [2024-10-14 14:26:16,719 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 42 selfloop transitions, 14 changer transitions 38/107 dead transitions. [2024-10-14 14:26:16,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 107 transitions, 810 flow [2024-10-14 14:26:16,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 14:26:16,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 14:26:16,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-10-14 14:26:16,722 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-14 14:26:16,722 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 252 flow. Second operand 10 states and 247 transitions. [2024-10-14 14:26:16,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 107 transitions, 810 flow [2024-10-14 14:26:16,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 107 transitions, 778 flow, removed 16 selfloop flow, removed 0 redundant places. [2024-10-14 14:26:16,737 INFO L231 Difference]: Finished difference. Result has 74 places, 49 transitions, 350 flow [2024-10-14 14:26:16,738 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=350, PETRI_PLACES=74, PETRI_TRANSITIONS=49} [2024-10-14 14:26:16,739 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2024-10-14 14:26:16,739 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 49 transitions, 350 flow [2024-10-14 14:26:16,739 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) [2024-10-14 14:26:16,739 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:26:16,740 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:26:16,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 14:26:16,740 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)] === [2024-10-14 14:26:16,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:26:16,741 INFO L85 PathProgramCache]: Analyzing trace with hash 58176476, now seen corresponding path program 1 times [2024-10-14 14:26:16,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:26:16,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753820382] [2024-10-14 14:26:16,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:26:16,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:26:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:26:16,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:26:16,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:26:16,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753820382] [2024-10-14 14:26:16,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753820382] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:26:16,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:26:16,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:26:16,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483339715] [2024-10-14 14:26:16,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:26:16,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:26:16,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:26:16,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:26:16,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:26:16,920 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-10-14 14:26:16,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 49 transitions, 350 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2024-10-14 14:26:16,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:26:16,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-10-14 14:26:16,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:26:17,252 INFO L124 PetriNetUnfolderBase]: 771/1571 cut-off events. [2024-10-14 14:26:17,252 INFO L125 PetriNetUnfolderBase]: For 6915/6929 co-relation queries the response was YES. [2024-10-14 14:26:17,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5668 conditions, 1571 events. 771/1571 cut-off events. For 6915/6929 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10883 event pairs, 152 based on Foata normal form. 35/1585 useless extension candidates. Maximal degree in co-relation 5633. Up to 460 conditions per place. [2024-10-14 14:26:17,269 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 38 selfloop transitions, 14 changer transitions 32/97 dead transitions. [2024-10-14 14:26:17,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 846 flow [2024-10-14 14:26:17,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 14:26:17,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 14:26:17,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2024-10-14 14:26:17,272 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-10-14 14:26:17,272 INFO L175 Difference]: Start difference. First operand has 74 places, 49 transitions, 350 flow. Second operand 10 states and 230 transitions. [2024-10-14 14:26:17,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 846 flow [2024-10-14 14:26:17,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 97 transitions, 780 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-10-14 14:26:17,291 INFO L231 Difference]: Finished difference. Result has 76 places, 52 transitions, 427 flow [2024-10-14 14:26:17,291 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=427, PETRI_PLACES=76, PETRI_TRANSITIONS=52} [2024-10-14 14:26:17,292 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2024-10-14 14:26:17,292 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 52 transitions, 427 flow [2024-10-14 14:26:17,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2024-10-14 14:26:17,293 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:26:17,293 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:26:17,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 14:26:17,293 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)] === [2024-10-14 14:26:17,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:26:17,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1539955744, now seen corresponding path program 1 times [2024-10-14 14:26:17,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:26:17,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903102475] [2024-10-14 14:26:17,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:26:17,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:26:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:26:17,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:26:17,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:26:17,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903102475] [2024-10-14 14:26:17,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903102475] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:26:17,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:26:17,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:26:17,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091113198] [2024-10-14 14:26:17,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:26:17,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:26:17,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:26:17,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:26:17,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:26:17,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 38 [2024-10-14 14:26:17,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 52 transitions, 427 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-10-14 14:26:17,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:26:17,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 38 [2024-10-14 14:26:17,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:26:17,660 INFO L124 PetriNetUnfolderBase]: 611/1438 cut-off events. [2024-10-14 14:26:17,660 INFO L125 PetriNetUnfolderBase]: For 6690/6775 co-relation queries the response was YES. [2024-10-14 14:26:17,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4823 conditions, 1438 events. 611/1438 cut-off events. For 6690/6775 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11038 event pairs, 224 based on Foata normal form. 74/1422 useless extension candidates. Maximal degree in co-relation 4787. Up to 526 conditions per place. [2024-10-14 14:26:17,675 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 28 selfloop transitions, 8 changer transitions 20/82 dead transitions. [2024-10-14 14:26:17,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 82 transitions, 709 flow [2024-10-14 14:26:17,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 14:26:17,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 14:26:17,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-10-14 14:26:17,677 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6766917293233082 [2024-10-14 14:26:17,677 INFO L175 Difference]: Start difference. First operand has 76 places, 52 transitions, 427 flow. Second operand 7 states and 180 transitions. [2024-10-14 14:26:17,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 82 transitions, 709 flow [2024-10-14 14:26:17,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 82 transitions, 647 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-10-14 14:26:17,693 INFO L231 Difference]: Finished difference. Result has 75 places, 51 transitions, 413 flow [2024-10-14 14:26:17,693 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=413, PETRI_PLACES=75, PETRI_TRANSITIONS=51} [2024-10-14 14:26:17,696 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 33 predicate places. [2024-10-14 14:26:17,696 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 51 transitions, 413 flow [2024-10-14 14:26:17,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-10-14 14:26:17,697 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:26:17,697 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:26:17,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 14:26:17,697 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)] === [2024-10-14 14:26:17,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:26:17,699 INFO L85 PathProgramCache]: Analyzing trace with hash 610401862, now seen corresponding path program 1 times [2024-10-14 14:26:17,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:26:17,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614410913] [2024-10-14 14:26:17,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:26:17,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:26:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:26:17,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:26:17,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:26:17,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614410913] [2024-10-14 14:26:17,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614410913] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:26:17,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:26:17,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 14:26:17,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322740179] [2024-10-14 14:26:17,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:26:17,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 14:26:17,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:26:17,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 14:26:17,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 14:26:17,878 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-10-14 14:26:17,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 51 transitions, 413 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) [2024-10-14 14:26:17,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:26:17,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-10-14 14:26:17,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:26:18,234 INFO L124 PetriNetUnfolderBase]: 1200/2440 cut-off events. [2024-10-14 14:26:18,234 INFO L125 PetriNetUnfolderBase]: For 12178/12187 co-relation queries the response was YES. [2024-10-14 14:26:18,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8334 conditions, 2440 events. 1200/2440 cut-off events. For 12178/12187 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 18531 event pairs, 201 based on Foata normal form. 71/2470 useless extension candidates. Maximal degree in co-relation 8308. Up to 556 conditions per place. [2024-10-14 14:26:18,253 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 39 selfloop transitions, 7 changer transitions 63/121 dead transitions. [2024-10-14 14:26:18,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 121 transitions, 1238 flow [2024-10-14 14:26:18,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 14:26:18,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 14:26:18,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-10-14 14:26:18,255 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2024-10-14 14:26:18,255 INFO L175 Difference]: Start difference. First operand has 75 places, 51 transitions, 413 flow. Second operand 9 states and 213 transitions. [2024-10-14 14:26:18,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 121 transitions, 1238 flow [2024-10-14 14:26:18,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 121 transitions, 1172 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-10-14 14:26:18,279 INFO L231 Difference]: Finished difference. Result has 79 places, 40 transitions, 284 flow [2024-10-14 14:26:18,280 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=284, PETRI_PLACES=79, PETRI_TRANSITIONS=40} [2024-10-14 14:26:18,281 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 37 predicate places. [2024-10-14 14:26:18,281 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 40 transitions, 284 flow [2024-10-14 14:26:18,282 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) [2024-10-14 14:26:18,282 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:26:18,282 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] [2024-10-14 14:26:18,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 14:26:18,283 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)] === [2024-10-14 14:26:18,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:26:18,283 INFO L85 PathProgramCache]: Analyzing trace with hash 960247407, now seen corresponding path program 1 times [2024-10-14 14:26:18,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:26:18,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365954767] [2024-10-14 14:26:18,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:26:18,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:26:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:26:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:26:18,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:26:18,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365954767] [2024-10-14 14:26:18,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365954767] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:26:18,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:26:18,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 14:26:18,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843378862] [2024-10-14 14:26:18,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:26:18,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:26:18,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:26:18,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:26:18,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:26:18,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-10-14 14:26:18,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 40 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2024-10-14 14:26:18,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:26:18,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-10-14 14:26:18,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:26:18,565 INFO L124 PetriNetUnfolderBase]: 724/1455 cut-off events. [2024-10-14 14:26:18,566 INFO L125 PetriNetUnfolderBase]: For 2594/2640 co-relation queries the response was YES. [2024-10-14 14:26:18,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3718 conditions, 1455 events. 724/1455 cut-off events. For 2594/2640 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9593 event pairs, 194 based on Foata normal form. 87/1466 useless extension candidates. Maximal degree in co-relation 3691. Up to 631 conditions per place. [2024-10-14 14:26:18,579 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 26 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-10-14 14:26:18,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 55 transitions, 380 flow [2024-10-14 14:26:18,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:26:18,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:26:18,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-10-14 14:26:18,581 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.743421052631579 [2024-10-14 14:26:18,581 INFO L175 Difference]: Start difference. First operand has 79 places, 40 transitions, 284 flow. Second operand 4 states and 113 transitions. [2024-10-14 14:26:18,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 55 transitions, 380 flow [2024-10-14 14:26:18,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 55 transitions, 286 flow, removed 17 selfloop flow, removed 17 redundant places. [2024-10-14 14:26:18,590 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 228 flow [2024-10-14 14:26:18,590 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2024-10-14 14:26:18,591 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-10-14 14:26:18,592 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 228 flow [2024-10-14 14:26:18,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2024-10-14 14:26:18,593 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:26:18,593 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] [2024-10-14 14:26:18,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 14:26:18,593 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)] === [2024-10-14 14:26:18,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:26:18,594 INFO L85 PathProgramCache]: Analyzing trace with hash 912476548, now seen corresponding path program 1 times [2024-10-14 14:26:18,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:26:18,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450300063] [2024-10-14 14:26:18,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:26:18,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:26:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:26:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:26:18,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:26:18,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450300063] [2024-10-14 14:26:18,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450300063] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:26:18,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:26:18,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:26:18,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806643802] [2024-10-14 14:26:18,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:26:18,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:26:18,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:26:18,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:26:18,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:26:18,710 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-10-14 14:26:18,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2024-10-14 14:26:18,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:26:18,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-10-14 14:26:18,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:26:18,862 INFO L124 PetriNetUnfolderBase]: 587/1172 cut-off events. [2024-10-14 14:26:18,863 INFO L125 PetriNetUnfolderBase]: For 630/951 co-relation queries the response was YES. [2024-10-14 14:26:18,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3011 conditions, 1172 events. 587/1172 cut-off events. For 630/951 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 6918 event pairs, 57 based on Foata normal form. 95/1206 useless extension candidates. Maximal degree in co-relation 2993. Up to 520 conditions per place. [2024-10-14 14:26:18,870 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 27 selfloop transitions, 8 changer transitions 9/65 dead transitions. [2024-10-14 14:26:18,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 65 transitions, 373 flow [2024-10-14 14:26:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:26:18,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:26:18,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-10-14 14:26:18,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7526315789473684 [2024-10-14 14:26:18,871 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 228 flow. Second operand 5 states and 143 transitions. [2024-10-14 14:26:18,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 65 transitions, 373 flow [2024-10-14 14:26:18,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 65 transitions, 348 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-10-14 14:26:18,875 INFO L231 Difference]: Finished difference. Result has 64 places, 42 transitions, 217 flow [2024-10-14 14:26:18,875 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=64, PETRI_TRANSITIONS=42} [2024-10-14 14:26:18,876 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2024-10-14 14:26:18,876 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 42 transitions, 217 flow [2024-10-14 14:26:18,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2024-10-14 14:26:18,876 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:26:18,877 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:26:18,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 14:26:18,877 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)] === [2024-10-14 14:26:18,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:26:18,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1707616869, now seen corresponding path program 1 times [2024-10-14 14:26:18,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:26:18,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198437232] [2024-10-14 14:26:18,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:26:18,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:26:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:26:18,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:26:18,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:26:18,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198437232] [2024-10-14 14:26:18,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198437232] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:26:18,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:26:18,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:26:18,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881964545] [2024-10-14 14:26:18,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:26:18,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:26:18,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:26:18,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:26:18,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:26:18,986 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-10-14 14:26:18,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 42 transitions, 217 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2024-10-14 14:26:18,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:26:18,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-10-14 14:26:18,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:26:19,115 INFO L124 PetriNetUnfolderBase]: 313/595 cut-off events. [2024-10-14 14:26:19,116 INFO L125 PetriNetUnfolderBase]: For 974/1313 co-relation queries the response was YES. [2024-10-14 14:26:19,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1828 conditions, 595 events. 313/595 cut-off events. For 974/1313 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2790 event pairs, 17 based on Foata normal form. 72/629 useless extension candidates. Maximal degree in co-relation 1812. Up to 248 conditions per place. [2024-10-14 14:26:19,119 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 0 selfloop transitions, 0 changer transitions 57/57 dead transitions. [2024-10-14 14:26:19,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 330 flow [2024-10-14 14:26:19,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:26:19,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 14:26:19,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-10-14 14:26:19,120 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.706140350877193 [2024-10-14 14:26:19,120 INFO L175 Difference]: Start difference. First operand has 64 places, 42 transitions, 217 flow. Second operand 6 states and 161 transitions. [2024-10-14 14:26:19,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 330 flow [2024-10-14 14:26:19,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 293 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-10-14 14:26:19,122 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2024-10-14 14:26:19,123 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2024-10-14 14:26:19,124 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2024-10-14 14:26:19,125 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2024-10-14 14:26:19,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2024-10-14 14:26:19,130 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-10-14 14:26:19,131 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-10-14 14:26:19,131 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-10-14 14:26:19,131 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-10-14 14:26:19,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 14:26:19,132 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:26:19,135 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-14 14:26:19,135 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 14:26:19,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 02:26:19 BasicIcfg [2024-10-14 14:26:19,145 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 14:26:19,145 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 14:26:19,146 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 14:26:19,146 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 14:26:19,146 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:26:13" (3/4) ... [2024-10-14 14:26:19,148 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-14 14:26:19,151 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-10-14 14:26:19,151 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-10-14 14:26:19,152 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-10-14 14:26:19,156 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2024-10-14 14:26:19,157 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-10-14 14:26:19,157 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-14 14:26:19,157 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-14 14:26:19,242 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-14 14:26:19,245 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-14 14:26:19,245 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 14:26:19,246 INFO L158 Benchmark]: Toolchain (without parser) took 6384.39ms. Allocated memory was 151.0MB in the beginning and 249.6MB in the end (delta: 98.6MB). Free memory was 89.7MB in the beginning and 182.3MB in the end (delta: -92.6MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2024-10-14 14:26:19,246 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 45.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 14:26:19,246 INFO L158 Benchmark]: CACSL2BoogieTranslator took 539.22ms. Allocated memory is still 151.0MB. Free memory was 89.4MB in the beginning and 112.6MB in the end (delta: -23.2MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2024-10-14 14:26:19,247 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.96ms. Allocated memory is still 151.0MB. Free memory was 112.6MB in the beginning and 111.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 14:26:19,247 INFO L158 Benchmark]: Boogie Preprocessor took 65.09ms. Allocated memory is still 151.0MB. Free memory was 111.0MB in the beginning and 108.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 14:26:19,247 INFO L158 Benchmark]: RCFGBuilder took 476.40ms. Allocated memory is still 151.0MB. Free memory was 108.4MB in the beginning and 89.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-10-14 14:26:19,248 INFO L158 Benchmark]: TraceAbstraction took 5148.45ms. Allocated memory was 151.0MB in the beginning and 249.6MB in the end (delta: 98.6MB). Free memory was 89.0MB in the beginning and 186.5MB in the end (delta: -97.5MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. [2024-10-14 14:26:19,248 INFO L158 Benchmark]: Witness Printer took 100.08ms. Allocated memory is still 249.6MB. Free memory was 186.5MB in the beginning and 182.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-14 14:26:19,249 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 45.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 539.22ms. Allocated memory is still 151.0MB. Free memory was 89.4MB in the beginning and 112.6MB in the end (delta: -23.2MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.96ms. Allocated memory is still 151.0MB. Free memory was 112.6MB in the beginning and 111.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.09ms. Allocated memory is still 151.0MB. Free memory was 111.0MB in the beginning and 108.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 476.40ms. Allocated memory is still 151.0MB. Free memory was 108.4MB in the beginning and 89.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 5148.45ms. Allocated memory was 151.0MB in the beginning and 249.6MB in the end (delta: 98.6MB). Free memory was 89.0MB in the beginning and 186.5MB in the end (delta: -97.5MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. * Witness Printer took 100.08ms. Allocated memory is still 249.6MB. Free memory was 186.5MB in the beginning and 182.3MB 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, 62 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: 5.0s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 429 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 392 mSDsluCounter, 311 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 217 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 770 IncrementalHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 94 mSDtfsCounter, 770 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=427occurred in iteration=4, InterpolantAutomatonStates: 68, 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, 1.4s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 163 ConstructedInterpolants, 0 QuantifiedInterpolants, 703 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! [2024-10-14 14:26:19,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE