./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 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/weaver/chl-array-int-trans.wvr.c -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 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:35:02,383 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:35:02,434 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 09:35:02,439 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:35:02,441 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:35:02,462 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:35:02,462 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:35:02,463 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:35:02,463 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:35:02,463 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:35:02,464 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:35:02,464 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:35:02,465 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:35:02,465 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:35:02,466 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:35:02,467 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:35:02,467 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:35:02,467 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 09:35:02,467 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:35:02,467 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 09:35:02,468 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:35:02,470 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:35:02,470 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:35:02,470 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:35:02,471 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:35:02,471 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 09:35:02,471 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:35:02,471 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:35:02,471 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:35:02,471 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:35:02,472 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:35:02,472 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:35:02,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:35:02,472 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:35:02,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:35:02,472 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:35:02,472 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:35:02,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:35:02,473 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:35:02,473 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:35:02,473 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:35:02,473 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:35:02,474 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 [2024-11-20 09:35:02,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:35:02,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:35:02,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:35:02,663 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:35:02,664 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:35:02,665 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2024-11-20 09:35:03,875 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:35:04,019 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:35:04,019 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2024-11-20 09:35:04,025 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae9e55a0c/a2a0a7b0371d4fe597dcde9138b3f9f5/FLAG95d44752c [2024-11-20 09:35:04,035 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae9e55a0c/a2a0a7b0371d4fe597dcde9138b3f9f5 [2024-11-20 09:35:04,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:35:04,037 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:35:04,038 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:35:04,038 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:35:04,043 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:35:04,043 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:35:04" (1/1) ... [2024-11-20 09:35:04,044 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ec2c623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:04, skipping insertion in model container [2024-11-20 09:35:04,044 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:35:04" (1/1) ... [2024-11-20 09:35:04,060 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:35:04,246 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2767,2780] [2024-11-20 09:35:04,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:35:04,262 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:35:04,286 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2767,2780] [2024-11-20 09:35:04,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:35:04,308 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:35:04,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:04 WrapperNode [2024-11-20 09:35:04,309 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:35:04,309 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:35:04,309 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:35:04,310 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:35:04,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:04" (1/1) ... [2024-11-20 09:35:04,320 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:04" (1/1) ... [2024-11-20 09:35:04,341 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 13, calls inlined = 21, statements flattened = 270 [2024-11-20 09:35:04,342 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:35:04,342 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:35:04,342 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:35:04,342 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:35:04,354 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:04" (1/1) ... [2024-11-20 09:35:04,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:04" (1/1) ... [2024-11-20 09:35:04,357 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:04" (1/1) ... [2024-11-20 09:35:04,370 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-20 09:35:04,371 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:04" (1/1) ... [2024-11-20 09:35:04,371 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:04" (1/1) ... [2024-11-20 09:35:04,377 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:04" (1/1) ... [2024-11-20 09:35:04,383 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:04" (1/1) ... [2024-11-20 09:35:04,386 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:04" (1/1) ... [2024-11-20 09:35:04,387 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:04" (1/1) ... [2024-11-20 09:35:04,391 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:35:04,392 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:35:04,392 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:35:04,392 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:35:04,393 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:04" (1/1) ... [2024-11-20 09:35:04,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:35:04,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:35:04,419 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 09:35:04,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 09:35:04,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:35:04,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 09:35:04,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 09:35:04,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 09:35:04,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 09:35:04,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-20 09:35:04,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-20 09:35:04,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:35:04,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 09:35:04,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 09:35:04,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 09:35:04,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 09:35:04,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:35:04,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:35:04,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 09:35:04,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 09:35:04,454 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 09:35:04,532 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:35:04,533 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:35:04,866 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 09:35:04,866 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:35:05,126 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:35:05,126 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-20 09:35:05,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:35:05 BoogieIcfgContainer [2024-11-20 09:35:05,127 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:35:05,128 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:35:05,129 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:35:05,131 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:35:05,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:35:04" (1/3) ... [2024-11-20 09:35:05,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5407e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:35:05, skipping insertion in model container [2024-11-20 09:35:05,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:04" (2/3) ... [2024-11-20 09:35:05,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5407e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:35:05, skipping insertion in model container [2024-11-20 09:35:05,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:35:05" (3/3) ... [2024-11-20 09:35:05,134 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2024-11-20 09:35:05,147 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:35:05,147 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 09:35:05,147 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 09:35:05,190 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-20 09:35:05,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 40 transitions, 101 flow [2024-11-20 09:35:05,246 INFO L124 PetriNetUnfolderBase]: 9/37 cut-off events. [2024-11-20 09:35:05,247 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 09:35:05,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 37 events. 9/37 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-20 09:35:05,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 40 transitions, 101 flow [2024-11-20 09:35:05,252 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 36 transitions, 90 flow [2024-11-20 09:35:05,263 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:35:05,270 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;@1bd0754c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:35:05,271 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-20 09:35:05,285 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:35:05,286 INFO L124 PetriNetUnfolderBase]: 9/35 cut-off events. [2024-11-20 09:35:05,286 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 09:35:05,286 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:05,287 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] [2024-11-20 09:35:05,287 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:05,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:05,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1791323821, now seen corresponding path program 1 times [2024-11-20 09:35:05,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:05,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793735977] [2024-11-20 09:35:05,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:05,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:05,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:35:05,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:05,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793735977] [2024-11-20 09:35:05,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793735977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:35:05,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:35:05,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 09:35:05,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513617242] [2024-11-20 09:35:05,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:05,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:35:05,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:05,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:35:05,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 09:35:05,820 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:05,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 90 flow. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:05,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:05,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:05,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:06,470 INFO L124 PetriNetUnfolderBase]: 2897/3947 cut-off events. [2024-11-20 09:35:06,470 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2024-11-20 09:35:06,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8176 conditions, 3947 events. 2897/3947 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 16746 event pairs, 254 based on Foata normal form. 1/2840 useless extension candidates. Maximal degree in co-relation 5265. Up to 1295 conditions per place. [2024-11-20 09:35:06,491 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 122 selfloop transitions, 13 changer transitions 2/138 dead transitions. [2024-11-20 09:35:06,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 138 transitions, 622 flow [2024-11-20 09:35:06,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 09:35:06,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 09:35:06,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-11-20 09:35:06,502 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-11-20 09:35:06,504 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 90 flow. Second operand 9 states and 174 transitions. [2024-11-20 09:35:06,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 138 transitions, 622 flow [2024-11-20 09:35:06,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 138 transitions, 574 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-20 09:35:06,518 INFO L231 Difference]: Finished difference. Result has 42 places, 49 transitions, 156 flow [2024-11-20 09:35:06,520 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=42, PETRI_TRANSITIONS=49} [2024-11-20 09:35:06,522 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2024-11-20 09:35:06,522 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 49 transitions, 156 flow [2024-11-20 09:35:06,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:06,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:06,523 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] [2024-11-20 09:35:06,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:35:06,523 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:06,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:06,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1504680807, now seen corresponding path program 2 times [2024-11-20 09:35:06,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:06,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728211564] [2024-11-20 09:35:06,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:06,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:06,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:35:06,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:06,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728211564] [2024-11-20 09:35:06,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728211564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:35:06,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:35:06,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 09:35:06,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638919739] [2024-11-20 09:35:06,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:06,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:35:06,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:06,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:35:06,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 09:35:06,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:06,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 49 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:06,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:06,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:06,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:07,195 INFO L124 PetriNetUnfolderBase]: 3338/4609 cut-off events. [2024-11-20 09:35:07,196 INFO L125 PetriNetUnfolderBase]: For 573/573 co-relation queries the response was YES. [2024-11-20 09:35:07,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10154 conditions, 4609 events. 3338/4609 cut-off events. For 573/573 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 20971 event pairs, 339 based on Foata normal form. 1/3781 useless extension candidates. Maximal degree in co-relation 7203. Up to 1443 conditions per place. [2024-11-20 09:35:07,215 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 124 selfloop transitions, 15 changer transitions 2/142 dead transitions. [2024-11-20 09:35:07,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 142 transitions, 655 flow [2024-11-20 09:35:07,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 09:35:07,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 09:35:07,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-11-20 09:35:07,218 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-11-20 09:35:07,218 INFO L175 Difference]: Start difference. First operand has 42 places, 49 transitions, 156 flow. Second operand 9 states and 176 transitions. [2024-11-20 09:35:07,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 142 transitions, 655 flow [2024-11-20 09:35:07,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 142 transitions, 653 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-20 09:35:07,223 INFO L231 Difference]: Finished difference. Result has 52 places, 53 transitions, 218 flow [2024-11-20 09:35:07,223 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=218, PETRI_PLACES=52, PETRI_TRANSITIONS=53} [2024-11-20 09:35:07,224 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 15 predicate places. [2024-11-20 09:35:07,224 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 53 transitions, 218 flow [2024-11-20 09:35:07,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:07,225 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:07,225 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:35:07,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 09:35:07,225 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:07,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:07,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1891129723, now seen corresponding path program 1 times [2024-11-20 09:35:07,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:07,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688362555] [2024-11-20 09:35:07,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:07,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:07,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:35:07,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:07,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688362555] [2024-11-20 09:35:07,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688362555] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:35:07,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860505873] [2024-11-20 09:35:07,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:07,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:35:07,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:35:07,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:35:07,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 09:35:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:07,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 09:35:07,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:35:07,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:35:07,640 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:35:07,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:35:07,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860505873] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 09:35:07,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 09:35:07,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 12 [2024-11-20 09:35:07,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125731696] [2024-11-20 09:35:07,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:07,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:35:07,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:07,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:35:07,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-20 09:35:07,726 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:07,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 218 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:07,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:07,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:07,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:08,241 INFO L124 PetriNetUnfolderBase]: 4570/6299 cut-off events. [2024-11-20 09:35:08,241 INFO L125 PetriNetUnfolderBase]: For 2968/2968 co-relation queries the response was YES. [2024-11-20 09:35:08,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14766 conditions, 6299 events. 4570/6299 cut-off events. For 2968/2968 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 27897 event pairs, 2476 based on Foata normal form. 1/5189 useless extension candidates. Maximal degree in co-relation 10928. Up to 3282 conditions per place. [2024-11-20 09:35:08,262 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 119 selfloop transitions, 8 changer transitions 3/131 dead transitions. [2024-11-20 09:35:08,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 131 transitions, 693 flow [2024-11-20 09:35:08,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 09:35:08,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 09:35:08,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2024-11-20 09:35:08,266 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-11-20 09:35:08,266 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 218 flow. Second operand 7 states and 145 transitions. [2024-11-20 09:35:08,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 131 transitions, 693 flow [2024-11-20 09:35:08,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 131 transitions, 676 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-20 09:35:08,273 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 247 flow [2024-11-20 09:35:08,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=247, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2024-11-20 09:35:08,275 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 20 predicate places. [2024-11-20 09:35:08,275 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 247 flow [2024-11-20 09:35:08,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:08,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:08,275 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:35:08,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 09:35:08,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:35:08,480 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:08,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:08,480 INFO L85 PathProgramCache]: Analyzing trace with hash 421060979, now seen corresponding path program 1 times [2024-11-20 09:35:08,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:08,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537259836] [2024-11-20 09:35:08,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:08,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:35:08,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:08,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537259836] [2024-11-20 09:35:08,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537259836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:35:08,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:35:08,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:35:08,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927053887] [2024-11-20 09:35:08,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:08,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:35:08,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:08,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:35:08,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:35:08,565 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:08,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 247 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:08,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:08,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:08,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:09,172 INFO L124 PetriNetUnfolderBase]: 5454/7667 cut-off events. [2024-11-20 09:35:09,172 INFO L125 PetriNetUnfolderBase]: For 4057/4057 co-relation queries the response was YES. [2024-11-20 09:35:09,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18768 conditions, 7667 events. 5454/7667 cut-off events. For 4057/4057 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 37517 event pairs, 2454 based on Foata normal form. 0/6755 useless extension candidates. Maximal degree in co-relation 15490. Up to 4606 conditions per place. [2024-11-20 09:35:09,205 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 99 selfloop transitions, 11 changer transitions 0/111 dead transitions. [2024-11-20 09:35:09,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 111 transitions, 664 flow [2024-11-20 09:35:09,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:35:09,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:35:09,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2024-11-20 09:35:09,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.495 [2024-11-20 09:35:09,207 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 247 flow. Second operand 5 states and 99 transitions. [2024-11-20 09:35:09,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 111 transitions, 664 flow [2024-11-20 09:35:09,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 111 transitions, 653 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-20 09:35:09,217 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 328 flow [2024-11-20 09:35:09,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2024-11-20 09:35:09,219 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 24 predicate places. [2024-11-20 09:35:09,219 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 328 flow [2024-11-20 09:35:09,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:09,219 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:09,220 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:35:09,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 09:35:09,220 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:09,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:09,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1385803279, now seen corresponding path program 1 times [2024-11-20 09:35:09,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:09,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460604997] [2024-11-20 09:35:09,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:09,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:35:09,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:09,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460604997] [2024-11-20 09:35:09,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460604997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:35:09,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:35:09,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 09:35:09,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208615584] [2024-11-20 09:35:09,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:09,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:35:09,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:09,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:35:09,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:35:09,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:09,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 328 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:09,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:09,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:09,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:09,692 INFO L124 PetriNetUnfolderBase]: 3800/5442 cut-off events. [2024-11-20 09:35:09,693 INFO L125 PetriNetUnfolderBase]: For 4113/4113 co-relation queries the response was YES. [2024-11-20 09:35:09,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13680 conditions, 5442 events. 3800/5442 cut-off events. For 4113/4113 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 26355 event pairs, 1572 based on Foata normal form. 0/5057 useless extension candidates. Maximal degree in co-relation 10643. Up to 2570 conditions per place. [2024-11-20 09:35:09,712 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 87 selfloop transitions, 6 changer transitions 5/99 dead transitions. [2024-11-20 09:35:09,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 99 transitions, 600 flow [2024-11-20 09:35:09,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:35:09,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:35:09,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-11-20 09:35:09,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-11-20 09:35:09,713 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 328 flow. Second operand 5 states and 104 transitions. [2024-11-20 09:35:09,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 99 transitions, 600 flow [2024-11-20 09:35:09,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 99 transitions, 572 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-20 09:35:09,722 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 255 flow [2024-11-20 09:35:09,722 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-11-20 09:35:09,723 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 26 predicate places. [2024-11-20 09:35:09,723 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 255 flow [2024-11-20 09:35:09,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:09,723 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:09,723 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] [2024-11-20 09:35:09,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 09:35:09,724 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:09,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:09,724 INFO L85 PathProgramCache]: Analyzing trace with hash -139095454, now seen corresponding path program 1 times [2024-11-20 09:35:09,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:09,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294085407] [2024-11-20 09:35:09,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:09,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:09,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:35:09,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:09,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294085407] [2024-11-20 09:35:09,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294085407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:35:09,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:35:09,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 09:35:09,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282793808] [2024-11-20 09:35:09,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:09,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 09:35:09,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:09,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 09:35:09,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-20 09:35:09,863 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:09,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 255 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:09,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:09,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:09,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:10,440 INFO L124 PetriNetUnfolderBase]: 3820/5452 cut-off events. [2024-11-20 09:35:10,441 INFO L125 PetriNetUnfolderBase]: For 3238/3238 co-relation queries the response was YES. [2024-11-20 09:35:10,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13354 conditions, 5452 events. 3820/5452 cut-off events. For 3238/3238 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 26046 event pairs, 1320 based on Foata normal form. 2/5069 useless extension candidates. Maximal degree in co-relation 11209. Up to 2527 conditions per place. [2024-11-20 09:35:10,460 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 83 selfloop transitions, 5 changer transitions 59/148 dead transitions. [2024-11-20 09:35:10,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 148 transitions, 796 flow [2024-11-20 09:35:10,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 09:35:10,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 09:35:10,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-11-20 09:35:10,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-11-20 09:35:10,462 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 255 flow. Second operand 8 states and 170 transitions. [2024-11-20 09:35:10,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 148 transitions, 796 flow [2024-11-20 09:35:10,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 148 transitions, 783 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-20 09:35:10,471 INFO L231 Difference]: Finished difference. Result has 70 places, 53 transitions, 239 flow [2024-11-20 09:35:10,471 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=239, PETRI_PLACES=70, PETRI_TRANSITIONS=53} [2024-11-20 09:35:10,473 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 33 predicate places. [2024-11-20 09:35:10,474 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 53 transitions, 239 flow [2024-11-20 09:35:10,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:10,474 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:10,475 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] [2024-11-20 09:35:10,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 09:35:10,475 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)] === [2024-11-20 09:35:10,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:10,477 INFO L85 PathProgramCache]: Analyzing trace with hash 49833286, now seen corresponding path program 2 times [2024-11-20 09:35:10,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:10,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126380592] [2024-11-20 09:35:10,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:10,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:35:10,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:10,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126380592] [2024-11-20 09:35:10,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126380592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:35:10,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:35:10,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 09:35:10,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287940592] [2024-11-20 09:35:10,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:10,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 09:35:10,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:10,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 09:35:10,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-20 09:35:10,628 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:10,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 53 transitions, 239 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:10,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:10,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:10,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:11,261 INFO L124 PetriNetUnfolderBase]: 4178/5966 cut-off events. [2024-11-20 09:35:11,261 INFO L125 PetriNetUnfolderBase]: For 4106/4106 co-relation queries the response was YES. [2024-11-20 09:35:11,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15142 conditions, 5966 events. 4178/5966 cut-off events. For 4106/4106 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 28721 event pairs, 1704 based on Foata normal form. 2/5556 useless extension candidates. Maximal degree in co-relation 15093. Up to 2527 conditions per place. [2024-11-20 09:35:11,281 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 102 selfloop transitions, 6 changer transitions 44/153 dead transitions. [2024-11-20 09:35:11,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 153 transitions, 868 flow [2024-11-20 09:35:11,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 09:35:11,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 09:35:11,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-11-20 09:35:11,284 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.540625 [2024-11-20 09:35:11,285 INFO L175 Difference]: Start difference. First operand has 70 places, 53 transitions, 239 flow. Second operand 8 states and 173 transitions. [2024-11-20 09:35:11,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 153 transitions, 868 flow [2024-11-20 09:35:11,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 153 transitions, 817 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-11-20 09:35:11,296 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 255 flow [2024-11-20 09:35:11,296 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=255, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-11-20 09:35:11,297 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 33 predicate places. [2024-11-20 09:35:11,298 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 255 flow [2024-11-20 09:35:11,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:11,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:11,298 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] [2024-11-20 09:35:11,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 09:35:11,298 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)] === [2024-11-20 09:35:11,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:11,299 INFO L85 PathProgramCache]: Analyzing trace with hash -808810084, now seen corresponding path program 3 times [2024-11-20 09:35:11,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:11,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61033191] [2024-11-20 09:35:11,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:11,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:11,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:35:11,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:11,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61033191] [2024-11-20 09:35:11,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61033191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:35:11,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:35:11,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 09:35:11,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745434352] [2024-11-20 09:35:11,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:11,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 09:35:11,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:11,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 09:35:11,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-20 09:35:11,435 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:11,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 255 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:11,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:11,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:11,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:12,037 INFO L124 PetriNetUnfolderBase]: 3860/5517 cut-off events. [2024-11-20 09:35:12,037 INFO L125 PetriNetUnfolderBase]: For 3977/3977 co-relation queries the response was YES. [2024-11-20 09:35:12,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14278 conditions, 5517 events. 3860/5517 cut-off events. For 3977/3977 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 25817 event pairs, 1745 based on Foata normal form. 2/5129 useless extension candidates. Maximal degree in co-relation 14240. Up to 2527 conditions per place. [2024-11-20 09:35:12,054 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 82 selfloop transitions, 5 changer transitions 58/146 dead transitions. [2024-11-20 09:35:12,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 146 transitions, 821 flow [2024-11-20 09:35:12,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 09:35:12,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 09:35:12,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-11-20 09:35:12,060 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-20 09:35:12,060 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 255 flow. Second operand 8 states and 168 transitions. [2024-11-20 09:35:12,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 146 transitions, 821 flow [2024-11-20 09:35:12,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 146 transitions, 794 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-20 09:35:12,074 INFO L231 Difference]: Finished difference. Result has 74 places, 55 transitions, 259 flow [2024-11-20 09:35:12,074 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=259, PETRI_PLACES=74, PETRI_TRANSITIONS=55} [2024-11-20 09:35:12,075 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 37 predicate places. [2024-11-20 09:35:12,075 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 55 transitions, 259 flow [2024-11-20 09:35:12,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:12,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:12,075 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:35:12,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 09:35:12,075 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)] === [2024-11-20 09:35:12,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:12,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1596420867, now seen corresponding path program 1 times [2024-11-20 09:35:12,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:12,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271884596] [2024-11-20 09:35:12,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:12,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:12,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:35:12,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:12,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271884596] [2024-11-20 09:35:12,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271884596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:35:12,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:35:12,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 09:35:12,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544872094] [2024-11-20 09:35:12,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:12,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 09:35:12,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:12,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 09:35:12,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-20 09:35:12,198 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:12,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 55 transitions, 259 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:12,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:12,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:12,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:13,166 INFO L124 PetriNetUnfolderBase]: 9020/12758 cut-off events. [2024-11-20 09:35:13,167 INFO L125 PetriNetUnfolderBase]: For 9668/9668 co-relation queries the response was YES. [2024-11-20 09:35:13,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32257 conditions, 12758 events. 9020/12758 cut-off events. For 9668/9668 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 68410 event pairs, 2572 based on Foata normal form. 4/11712 useless extension candidates. Maximal degree in co-relation 32182. Up to 3835 conditions per place. [2024-11-20 09:35:13,213 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 160 selfloop transitions, 28 changer transitions 11/200 dead transitions. [2024-11-20 09:35:13,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 200 transitions, 1255 flow [2024-11-20 09:35:13,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 09:35:13,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 09:35:13,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-11-20 09:35:13,215 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-11-20 09:35:13,215 INFO L175 Difference]: Start difference. First operand has 74 places, 55 transitions, 259 flow. Second operand 9 states and 184 transitions. [2024-11-20 09:35:13,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 200 transitions, 1255 flow [2024-11-20 09:35:13,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 200 transitions, 1209 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-11-20 09:35:13,240 INFO L231 Difference]: Finished difference. Result has 79 places, 81 transitions, 522 flow [2024-11-20 09:35:13,240 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=522, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2024-11-20 09:35:13,241 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 42 predicate places. [2024-11-20 09:35:13,241 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 522 flow [2024-11-20 09:35:13,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:13,241 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:13,241 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] [2024-11-20 09:35:13,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 09:35:13,242 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:13,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:13,242 INFO L85 PathProgramCache]: Analyzing trace with hash 89447332, now seen corresponding path program 1 times [2024-11-20 09:35:13,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:13,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350669565] [2024-11-20 09:35:13,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:13,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:13,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:35:13,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:13,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350669565] [2024-11-20 09:35:13,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350669565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:35:13,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444946537] [2024-11-20 09:35:13,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:13,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:35:13,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:35:13,397 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:35:13,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 09:35:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:13,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 09:35:13,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:35:13,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:35:13,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:35:13,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:35:13,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444946537] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 09:35:13,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 09:35:13,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 16 [2024-11-20 09:35:13,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166087434] [2024-11-20 09:35:13,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:13,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:35:13,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:13,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:35:13,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-20 09:35:13,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:13,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 522 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:13,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:13,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:13,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:14,726 INFO L124 PetriNetUnfolderBase]: 8062/11384 cut-off events. [2024-11-20 09:35:14,727 INFO L125 PetriNetUnfolderBase]: For 14152/14152 co-relation queries the response was YES. [2024-11-20 09:35:14,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32080 conditions, 11384 events. 8062/11384 cut-off events. For 14152/14152 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 60124 event pairs, 3041 based on Foata normal form. 2/11022 useless extension candidates. Maximal degree in co-relation 27805. Up to 5226 conditions per place. [2024-11-20 09:35:14,763 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 152 selfloop transitions, 28 changer transitions 8/189 dead transitions. [2024-11-20 09:35:14,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 189 transitions, 1270 flow [2024-11-20 09:35:14,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 09:35:14,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 09:35:14,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-11-20 09:35:14,765 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.553125 [2024-11-20 09:35:14,765 INFO L175 Difference]: Start difference. First operand has 79 places, 81 transitions, 522 flow. Second operand 8 states and 177 transitions. [2024-11-20 09:35:14,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 189 transitions, 1270 flow [2024-11-20 09:35:14,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 189 transitions, 1268 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-20 09:35:14,793 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 592 flow [2024-11-20 09:35:14,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=592, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2024-11-20 09:35:14,794 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 50 predicate places. [2024-11-20 09:35:14,794 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 592 flow [2024-11-20 09:35:14,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:14,794 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:14,794 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] [2024-11-20 09:35:14,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 09:35:14,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-20 09:35:14,999 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:14,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:14,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1253818341, now seen corresponding path program 2 times [2024-11-20 09:35:14,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:14,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867951614] [2024-11-20 09:35:14,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:14,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:15,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:35:15,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:15,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867951614] [2024-11-20 09:35:15,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867951614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:35:15,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:35:15,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 09:35:15,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78933123] [2024-11-20 09:35:15,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:15,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 09:35:15,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:15,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 09:35:15,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-20 09:35:15,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:15,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 592 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:15,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:15,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:15,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:16,425 INFO L124 PetriNetUnfolderBase]: 13193/18642 cut-off events. [2024-11-20 09:35:16,426 INFO L125 PetriNetUnfolderBase]: For 25472/25472 co-relation queries the response was YES. [2024-11-20 09:35:16,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53251 conditions, 18642 events. 13193/18642 cut-off events. For 25472/25472 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 105917 event pairs, 2626 based on Foata normal form. 2/18038 useless extension candidates. Maximal degree in co-relation 48752. Up to 4686 conditions per place. [2024-11-20 09:35:16,496 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 209 selfloop transitions, 28 changer transitions 17/255 dead transitions. [2024-11-20 09:35:16,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 255 transitions, 2058 flow [2024-11-20 09:35:16,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 09:35:16,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 09:35:16,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-11-20 09:35:16,500 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-11-20 09:35:16,500 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 592 flow. Second operand 10 states and 204 transitions. [2024-11-20 09:35:16,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 255 transitions, 2058 flow [2024-11-20 09:35:16,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 255 transitions, 1975 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-20 09:35:16,651 INFO L231 Difference]: Finished difference. Result has 98 places, 98 transitions, 836 flow [2024-11-20 09:35:16,651 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=836, PETRI_PLACES=98, PETRI_TRANSITIONS=98} [2024-11-20 09:35:16,652 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 61 predicate places. [2024-11-20 09:35:16,652 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 98 transitions, 836 flow [2024-11-20 09:35:16,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:16,652 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:16,652 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] [2024-11-20 09:35:16,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 09:35:16,652 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:16,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:16,653 INFO L85 PathProgramCache]: Analyzing trace with hash -138598625, now seen corresponding path program 3 times [2024-11-20 09:35:16,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:16,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419284852] [2024-11-20 09:35:16,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:16,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:16,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:35:16,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:16,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419284852] [2024-11-20 09:35:16,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419284852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:35:16,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:35:16,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 09:35:16,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950019263] [2024-11-20 09:35:16,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:16,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 09:35:16,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:16,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 09:35:16,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-20 09:35:16,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:16,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 98 transitions, 836 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:16,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:16,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:16,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:18,287 INFO L124 PetriNetUnfolderBase]: 12401/17537 cut-off events. [2024-11-20 09:35:18,287 INFO L125 PetriNetUnfolderBase]: For 31675/31675 co-relation queries the response was YES. [2024-11-20 09:35:18,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54180 conditions, 17537 events. 12401/17537 cut-off events. For 31675/31675 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 98554 event pairs, 4094 based on Foata normal form. 2/16987 useless extension candidates. Maximal degree in co-relation 42041. Up to 5047 conditions per place. [2024-11-20 09:35:18,374 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 177 selfloop transitions, 32 changer transitions 24/234 dead transitions. [2024-11-20 09:35:18,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 234 transitions, 2021 flow [2024-11-20 09:35:18,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 09:35:18,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 09:35:18,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2024-11-20 09:35:18,375 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5194444444444445 [2024-11-20 09:35:18,375 INFO L175 Difference]: Start difference. First operand has 98 places, 98 transitions, 836 flow. Second operand 9 states and 187 transitions. [2024-11-20 09:35:18,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 234 transitions, 2021 flow [2024-11-20 09:35:18,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 234 transitions, 1994 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-20 09:35:18,480 INFO L231 Difference]: Finished difference. Result has 107 places, 108 transitions, 1065 flow [2024-11-20 09:35:18,480 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1065, PETRI_PLACES=107, PETRI_TRANSITIONS=108} [2024-11-20 09:35:18,481 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 70 predicate places. [2024-11-20 09:35:18,481 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 108 transitions, 1065 flow [2024-11-20 09:35:18,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:18,481 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:18,481 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:35:18,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 09:35:18,481 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:18,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:18,482 INFO L85 PathProgramCache]: Analyzing trace with hash -625530116, now seen corresponding path program 1 times [2024-11-20 09:35:18,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:18,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690267655] [2024-11-20 09:35:18,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:18,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:18,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:35:18,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:18,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690267655] [2024-11-20 09:35:18,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690267655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:35:18,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:35:18,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:35:18,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226042009] [2024-11-20 09:35:18,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:18,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:35:18,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:18,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:35:18,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:35:18,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:18,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 108 transitions, 1065 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:18,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:18,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:18,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:20,568 INFO L124 PetriNetUnfolderBase]: 19330/27117 cut-off events. [2024-11-20 09:35:20,568 INFO L125 PetriNetUnfolderBase]: For 57225/57225 co-relation queries the response was YES. [2024-11-20 09:35:20,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84749 conditions, 27117 events. 19330/27117 cut-off events. For 57225/57225 co-relation queries the response was YES. Maximal size of possible extension queue 1235. Compared 162437 event pairs, 2695 based on Foata normal form. 1/26336 useless extension candidates. Maximal degree in co-relation 76128. Up to 12299 conditions per place. [2024-11-20 09:35:20,706 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 194 selfloop transitions, 36 changer transitions 1/232 dead transitions. [2024-11-20 09:35:20,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 232 transitions, 2460 flow [2024-11-20 09:35:20,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:35:20,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:35:20,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-11-20 09:35:20,707 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-20 09:35:20,707 INFO L175 Difference]: Start difference. First operand has 107 places, 108 transitions, 1065 flow. Second operand 6 states and 130 transitions. [2024-11-20 09:35:20,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 232 transitions, 2460 flow [2024-11-20 09:35:21,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 232 transitions, 2249 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-11-20 09:35:21,151 INFO L231 Difference]: Finished difference. Result has 108 places, 136 transitions, 1369 flow [2024-11-20 09:35:21,151 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1369, PETRI_PLACES=108, PETRI_TRANSITIONS=136} [2024-11-20 09:35:21,151 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 71 predicate places. [2024-11-20 09:35:21,152 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 136 transitions, 1369 flow [2024-11-20 09:35:21,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:21,152 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:21,152 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:35:21,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 09:35:21,152 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:21,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:21,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1016759300, now seen corresponding path program 2 times [2024-11-20 09:35:21,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:21,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83636505] [2024-11-20 09:35:21,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:21,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:21,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:35:21,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:21,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83636505] [2024-11-20 09:35:21,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83636505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:35:21,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:35:21,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:35:21,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163670127] [2024-11-20 09:35:21,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:21,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:35:21,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:21,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:35:21,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:35:21,227 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:21,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 136 transitions, 1369 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:21,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:21,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:21,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:24,090 INFO L124 PetriNetUnfolderBase]: 24550/34194 cut-off events. [2024-11-20 09:35:24,090 INFO L125 PetriNetUnfolderBase]: For 77719/77719 co-relation queries the response was YES. [2024-11-20 09:35:24,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112626 conditions, 34194 events. 24550/34194 cut-off events. For 77719/77719 co-relation queries the response was YES. Maximal size of possible extension queue 1607. Compared 209269 event pairs, 3653 based on Foata normal form. 1/34191 useless extension candidates. Maximal degree in co-relation 94597. Up to 17017 conditions per place. [2024-11-20 09:35:24,317 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 190 selfloop transitions, 54 changer transitions 1/246 dead transitions. [2024-11-20 09:35:24,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 246 transitions, 2640 flow [2024-11-20 09:35:24,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:35:24,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:35:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-11-20 09:35:24,318 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-20 09:35:24,318 INFO L175 Difference]: Start difference. First operand has 108 places, 136 transitions, 1369 flow. Second operand 6 states and 132 transitions. [2024-11-20 09:35:24,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 246 transitions, 2640 flow [2024-11-20 09:35:24,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 246 transitions, 2612 flow, removed 14 selfloop flow, removed 0 redundant places. [2024-11-20 09:35:24,839 INFO L231 Difference]: Finished difference. Result has 116 places, 162 transitions, 1878 flow [2024-11-20 09:35:24,840 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1341, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1878, PETRI_PLACES=116, PETRI_TRANSITIONS=162} [2024-11-20 09:35:24,840 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 79 predicate places. [2024-11-20 09:35:24,840 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 162 transitions, 1878 flow [2024-11-20 09:35:24,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:24,841 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:24,841 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:35:24,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 09:35:24,841 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:24,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:24,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1955319854, now seen corresponding path program 3 times [2024-11-20 09:35:24,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:24,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162360207] [2024-11-20 09:35:24,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:24,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:24,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:35:24,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:24,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162360207] [2024-11-20 09:35:24,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162360207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:35:24,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:35:24,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:35:24,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265909983] [2024-11-20 09:35:24,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:24,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:35:24,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:24,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:35:24,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:35:24,919 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:24,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 162 transitions, 1878 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:24,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:24,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:24,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:28,435 INFO L124 PetriNetUnfolderBase]: 27255/38058 cut-off events. [2024-11-20 09:35:28,436 INFO L125 PetriNetUnfolderBase]: For 116117/116117 co-relation queries the response was YES. [2024-11-20 09:35:28,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131495 conditions, 38058 events. 27255/38058 cut-off events. For 116117/116117 co-relation queries the response was YES. Maximal size of possible extension queue 1760. Compared 235397 event pairs, 4855 based on Foata normal form. 1/38055 useless extension candidates. Maximal degree in co-relation 111883. Up to 20061 conditions per place. [2024-11-20 09:35:28,781 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 131 selfloop transitions, 122 changer transitions 1/255 dead transitions. [2024-11-20 09:35:28,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 255 transitions, 2963 flow [2024-11-20 09:35:28,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:35:28,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:35:28,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-11-20 09:35:28,782 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-11-20 09:35:28,782 INFO L175 Difference]: Start difference. First operand has 116 places, 162 transitions, 1878 flow. Second operand 6 states and 128 transitions. [2024-11-20 09:35:28,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 255 transitions, 2963 flow [2024-11-20 09:35:29,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 255 transitions, 2901 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-11-20 09:35:29,594 INFO L231 Difference]: Finished difference. Result has 122 places, 192 transitions, 2538 flow [2024-11-20 09:35:29,595 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2538, PETRI_PLACES=122, PETRI_TRANSITIONS=192} [2024-11-20 09:35:29,595 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 85 predicate places. [2024-11-20 09:35:29,595 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 192 transitions, 2538 flow [2024-11-20 09:35:29,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:29,595 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:29,595 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:35:29,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 09:35:29,595 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:29,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:29,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1195890472, now seen corresponding path program 4 times [2024-11-20 09:35:29,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:29,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705112299] [2024-11-20 09:35:29,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:29,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:29,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:35:29,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:29,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705112299] [2024-11-20 09:35:29,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705112299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:35:29,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:35:29,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:35:29,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554338582] [2024-11-20 09:35:29,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:29,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:35:29,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:29,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:35:29,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:35:29,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:29,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 192 transitions, 2538 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:29,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:29,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:29,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:33,440 INFO L124 PetriNetUnfolderBase]: 29533/41558 cut-off events. [2024-11-20 09:35:33,441 INFO L125 PetriNetUnfolderBase]: For 168362/168362 co-relation queries the response was YES. [2024-11-20 09:35:33,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151802 conditions, 41558 events. 29533/41558 cut-off events. For 168362/168362 co-relation queries the response was YES. Maximal size of possible extension queue 1898. Compared 261907 event pairs, 4763 based on Foata normal form. 1/41555 useless extension candidates. Maximal degree in co-relation 127118. Up to 16230 conditions per place. [2024-11-20 09:35:33,764 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 242 selfloop transitions, 63 changer transitions 1/307 dead transitions. [2024-11-20 09:35:33,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 307 transitions, 4299 flow [2024-11-20 09:35:33,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:35:33,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:35:33,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-11-20 09:35:33,766 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-20 09:35:33,766 INFO L175 Difference]: Start difference. First operand has 122 places, 192 transitions, 2538 flow. Second operand 6 states and 126 transitions. [2024-11-20 09:35:33,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 307 transitions, 4299 flow [2024-11-20 09:35:34,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 307 transitions, 4237 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-11-20 09:35:34,888 INFO L231 Difference]: Finished difference. Result has 128 places, 211 transitions, 3015 flow [2024-11-20 09:35:34,888 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2482, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3015, PETRI_PLACES=128, PETRI_TRANSITIONS=211} [2024-11-20 09:35:34,889 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 91 predicate places. [2024-11-20 09:35:34,889 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 211 transitions, 3015 flow [2024-11-20 09:35:34,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:34,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:34,889 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:35:34,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-20 09:35:34,889 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:34,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:34,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1671834696, now seen corresponding path program 5 times [2024-11-20 09:35:34,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:34,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061889224] [2024-11-20 09:35:34,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:34,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:35:34,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:34,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061889224] [2024-11-20 09:35:34,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061889224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:35:34,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:35:34,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:35:34,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472748784] [2024-11-20 09:35:34,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:34,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:35:34,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:34,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:35:34,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:35:34,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:34,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 211 transitions, 3015 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:34,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:34,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:34,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:38,987 INFO L124 PetriNetUnfolderBase]: 29533/41556 cut-off events. [2024-11-20 09:35:38,987 INFO L125 PetriNetUnfolderBase]: For 208346/208346 co-relation queries the response was YES. [2024-11-20 09:35:39,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159761 conditions, 41556 events. 29533/41556 cut-off events. For 208346/208346 co-relation queries the response was YES. Maximal size of possible extension queue 1897. Compared 264944 event pairs, 3993 based on Foata normal form. 1/41553 useless extension candidates. Maximal degree in co-relation 141474. Up to 17893 conditions per place. [2024-11-20 09:35:39,578 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 155 selfloop transitions, 139 changer transitions 1/296 dead transitions. [2024-11-20 09:35:39,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 296 transitions, 4226 flow [2024-11-20 09:35:39,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:35:39,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:35:39,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-11-20 09:35:39,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-20 09:35:39,579 INFO L175 Difference]: Start difference. First operand has 128 places, 211 transitions, 3015 flow. Second operand 6 states and 130 transitions. [2024-11-20 09:35:39,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 296 transitions, 4226 flow [2024-11-20 09:35:40,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 296 transitions, 4158 flow, removed 29 selfloop flow, removed 1 redundant places. [2024-11-20 09:35:40,649 INFO L231 Difference]: Finished difference. Result has 135 places, 229 transitions, 3678 flow [2024-11-20 09:35:40,650 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2955, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3678, PETRI_PLACES=135, PETRI_TRANSITIONS=229} [2024-11-20 09:35:40,650 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 98 predicate places. [2024-11-20 09:35:40,650 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 229 transitions, 3678 flow [2024-11-20 09:35:40,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:40,650 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:35:40,650 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:35:40,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-20 09:35:40,650 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:35:40,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:35:40,651 INFO L85 PathProgramCache]: Analyzing trace with hash -733274142, now seen corresponding path program 6 times [2024-11-20 09:35:40,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:35:40,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667611747] [2024-11-20 09:35:40,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:35:40,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:35:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:35:40,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:35:40,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:35:40,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667611747] [2024-11-20 09:35:40,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667611747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:35:40,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:35:40,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:35:40,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768498617] [2024-11-20 09:35:40,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:35:40,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:35:40,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:35:40,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:35:40,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:35:40,726 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-20 09:35:40,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 229 transitions, 3678 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:35:40,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:35:40,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-20 09:35:40,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:35:45,051 INFO L124 PetriNetUnfolderBase]: 29533/41554 cut-off events. [2024-11-20 09:35:45,051 INFO L125 PetriNetUnfolderBase]: For 252874/252874 co-relation queries the response was YES. [2024-11-20 09:35:45,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166218 conditions, 41554 events. 29533/41554 cut-off events. For 252874/252874 co-relation queries the response was YES. Maximal size of possible extension queue 1898. Compared 262476 event pairs, 5189 based on Foata normal form. 1/41551 useless extension candidates. Maximal degree in co-relation 149543. Up to 16074 conditions per place. [2024-11-20 09:35:45,407 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 211 selfloop transitions, 110 changer transitions 1/323 dead transitions. [2024-11-20 09:35:45,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 323 transitions, 5243 flow [2024-11-20 09:35:45,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:35:45,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:35:45,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-11-20 09:35:45,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-20 09:35:45,409 INFO L175 Difference]: Start difference. First operand has 135 places, 229 transitions, 3678 flow. Second operand 6 states and 126 transitions. [2024-11-20 09:35:45,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 323 transitions, 5243 flow