./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-nzb-file-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-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 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:28:19,295 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:28:19,371 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:28:19,387 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:28:19,388 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:28:19,423 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:28:19,425 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:28:19,425 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:28:19,426 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:28:19,428 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:28:19,429 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:28:19,429 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:28:19,430 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:28:19,432 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:28:19,432 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:28:19,433 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:28:19,433 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:28:19,434 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:28:19,434 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:28:19,434 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:28:19,434 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:28:19,435 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:28:19,439 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:28:19,440 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:28:19,440 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:28:19,440 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:28:19,440 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:28:19,440 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:28:19,441 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:28:19,441 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:28:19,441 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:28:19,442 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:28:19,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:28:19,442 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:28:19,443 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:28:19,443 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:28:19,446 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:28:19,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:28:19,446 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:28:19,446 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:28:19,447 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:28:19,447 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:28:19,448 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b [2024-10-24 12:28:19,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:28:19,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:28:19,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:28:19,765 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:28:19,765 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:28:19,767 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2024-10-24 12:28:21,246 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:28:21,513 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:28:21,514 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2024-10-24 12:28:21,524 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/193098a21/1130f4caf5424185910ddc268e955fd0/FLAGb9f25d28d [2024-10-24 12:28:21,538 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/193098a21/1130f4caf5424185910ddc268e955fd0 [2024-10-24 12:28:21,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:28:21,542 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:28:21,543 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:28:21,543 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:28:21,549 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:28:21,550 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:28:21" (1/1) ... [2024-10-24 12:28:21,551 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e59ece5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:21, skipping insertion in model container [2024-10-24 12:28:21,552 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:28:21" (1/1) ... [2024-10-24 12:28:21,580 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:28:21,868 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6489,6502] [2024-10-24 12:28:21,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:28:21,911 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:28:21,975 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6489,6502] [2024-10-24 12:28:21,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:28:21,998 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:28:21,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:21 WrapperNode [2024-10-24 12:28:21,999 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:28:22,000 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:28:22,000 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:28:22,000 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:28:22,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:21" (1/1) ... [2024-10-24 12:28:22,021 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:21" (1/1) ... [2024-10-24 12:28:22,071 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 603 [2024-10-24 12:28:22,071 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:28:22,072 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:28:22,072 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:28:22,073 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:28:22,085 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:21" (1/1) ... [2024-10-24 12:28:22,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:21" (1/1) ... [2024-10-24 12:28:22,091 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:21" (1/1) ... [2024-10-24 12:28:22,115 INFO L175 MemorySlicer]: Split 29 memory accesses to 2 slices as follows [2, 27]. 93 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]. [2024-10-24 12:28:22,116 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:21" (1/1) ... [2024-10-24 12:28:22,116 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:21" (1/1) ... [2024-10-24 12:28:22,133 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:21" (1/1) ... [2024-10-24 12:28:22,139 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:21" (1/1) ... [2024-10-24 12:28:22,143 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:21" (1/1) ... [2024-10-24 12:28:22,145 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:21" (1/1) ... [2024-10-24 12:28:22,151 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:28:22,152 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:28:22,152 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:28:22,152 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:28:22,153 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:21" (1/1) ... [2024-10-24 12:28:22,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:28:22,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:28:22,192 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 12:28:22,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 12:28:22,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:28:22,256 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 12:28:22,256 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 12:28:22,256 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 12:28:22,256 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 12:28:22,256 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 12:28:22,257 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 12:28:22,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:28:22,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 12:28:22,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 12:28:22,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 12:28:22,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 12:28:22,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:28:22,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:28:22,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 12:28:22,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 12:28:22,264 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 12:28:22,410 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:28:22,412 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:28:23,368 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:28:23,369 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:28:24,351 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:28:24,351 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-24 12:28:24,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:28:24 BoogieIcfgContainer [2024-10-24 12:28:24,352 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:28:24,355 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:28:24,356 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:28:24,359 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:28:24,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:28:21" (1/3) ... [2024-10-24 12:28:24,362 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5d6bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:28:24, skipping insertion in model container [2024-10-24 12:28:24,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:21" (2/3) ... [2024-10-24 12:28:24,362 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5d6bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:28:24, skipping insertion in model container [2024-10-24 12:28:24,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:28:24" (3/3) ... [2024-10-24 12:28:24,364 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2024-10-24 12:28:24,382 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:28:24,382 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:28:24,382 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:28:24,503 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 12:28:24,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2024-10-24 12:28:24,585 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-10-24 12:28:24,585 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 12:28:24,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 12/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-10-24 12:28:24,591 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2024-10-24 12:28:24,594 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2024-10-24 12:28:24,610 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:28:24,620 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;@1c8a6f09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:28:24,621 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-24 12:28:24,645 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:28:24,646 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2024-10-24 12:28:24,646 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 12:28:24,646 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:24,647 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] [2024-10-24 12:28:24,647 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 12:28:24,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:24,654 INFO L85 PathProgramCache]: Analyzing trace with hash 46384734, now seen corresponding path program 1 times [2024-10-24 12:28:24,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:24,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253307629] [2024-10-24 12:28:24,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:24,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:28:25,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:25,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253307629] [2024-10-24 12:28:25,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253307629] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:25,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:25,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 12:28:25,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473229848] [2024-10-24 12:28:25,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:25,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:28:25,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:25,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:28:25,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:28:25,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:28:25,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:25,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:25,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:28:25,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:26,321 INFO L124 PetriNetUnfolderBase]: 2373/3237 cut-off events. [2024-10-24 12:28:26,321 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2024-10-24 12:28:26,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6649 conditions, 3237 events. 2373/3237 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12261 event pairs, 1692 based on Foata normal form. 0/2556 useless extension candidates. Maximal degree in co-relation 6206. Up to 3234 conditions per place. [2024-10-24 12:28:26,354 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 38 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2024-10-24 12:28:26,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 196 flow [2024-10-24 12:28:26,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:28:26,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 12:28:26,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-10-24 12:28:26,367 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2024-10-24 12:28:26,369 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 3 states and 62 transitions. [2024-10-24 12:28:26,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 196 flow [2024-10-24 12:28:26,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 184 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-24 12:28:26,384 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 122 flow [2024-10-24 12:28:26,386 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=40, PETRI_TRANSITIONS=45} [2024-10-24 12:28:26,393 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2024-10-24 12:28:26,395 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 122 flow [2024-10-24 12:28:26,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:26,395 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:26,396 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] [2024-10-24 12:28:26,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:28:26,396 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 12:28:26,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:26,397 INFO L85 PathProgramCache]: Analyzing trace with hash -2050377923, now seen corresponding path program 1 times [2024-10-24 12:28:26,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:26,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326823191] [2024-10-24 12:28:26,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:26,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:28:26,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:26,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326823191] [2024-10-24 12:28:26,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326823191] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:28:26,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286611657] [2024-10-24 12:28:26,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:26,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:28:26,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:28:26,645 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) [2024-10-24 12:28:26,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 12:28:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:26,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 12:28:26,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:28:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:28:26,938 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:28:26,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:28:26,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286611657] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:28:26,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:28:26,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-10-24 12:28:26,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597966177] [2024-10-24 12:28:26,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:28:26,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:28:26,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:26,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:28:26,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:28:26,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:28:26,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 45 transitions, 122 flow. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:26,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:26,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:28:26,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:27,689 INFO L124 PetriNetUnfolderBase]: 2373/3246 cut-off events. [2024-10-24 12:28:27,690 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-10-24 12:28:27,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6574 conditions, 3246 events. 2373/3246 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12260 event pairs, 1692 based on Foata normal form. 6/2573 useless extension candidates. Maximal degree in co-relation 6525. Up to 3234 conditions per place. [2024-10-24 12:28:27,709 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 38 selfloop transitions, 15 changer transitions 0/54 dead transitions. [2024-10-24 12:28:27,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 264 flow [2024-10-24 12:28:27,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:28:27,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:28:27,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-10-24 12:28:27,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2925170068027211 [2024-10-24 12:28:27,713 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 122 flow. Second operand 6 states and 86 transitions. [2024-10-24 12:28:27,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 264 flow [2024-10-24 12:28:27,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 12:28:27,715 INFO L231 Difference]: Finished difference. Result has 47 places, 54 transitions, 212 flow [2024-10-24 12:28:27,716 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=47, PETRI_TRANSITIONS=54} [2024-10-24 12:28:27,716 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-10-24 12:28:27,717 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 54 transitions, 212 flow [2024-10-24 12:28:27,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:27,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:27,717 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:28:27,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 12:28:27,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:28:27,919 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 12:28:27,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:27,920 INFO L85 PathProgramCache]: Analyzing trace with hash 154946276, now seen corresponding path program 2 times [2024-10-24 12:28:27,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:27,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923286565] [2024-10-24 12:28:27,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:27,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:28,219 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-24 12:28:28,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:28,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923286565] [2024-10-24 12:28:28,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923286565] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:28:28,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460044091] [2024-10-24 12:28:28,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 12:28:28,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:28:28,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:28:28,223 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) [2024-10-24 12:28:28,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 12:28:28,437 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 12:28:28,438 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:28:28,441 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 12:28:28,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:28:30,383 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-24 12:28:30,384 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:28:30,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460044091] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:30,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:28:30,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-10-24 12:28:30,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478766248] [2024-10-24 12:28:30,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:30,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:28:30,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:30,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:28:30,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-24 12:28:30,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:28:30,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 54 transitions, 212 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) [2024-10-24 12:28:30,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:30,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:28:30,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:31,884 INFO L124 PetriNetUnfolderBase]: 3141/4412 cut-off events. [2024-10-24 12:28:31,884 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-10-24 12:28:31,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8954 conditions, 4412 events. 3141/4412 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 19275 event pairs, 1692 based on Foata normal form. 1/3561 useless extension candidates. Maximal degree in co-relation 8866. Up to 3132 conditions per place. [2024-10-24 12:28:31,910 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 93 selfloop transitions, 2 changer transitions 8/104 dead transitions. [2024-10-24 12:28:31,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 104 transitions, 530 flow [2024-10-24 12:28:31,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:28:31,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:28:31,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-10-24 12:28:31,913 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-10-24 12:28:31,913 INFO L175 Difference]: Start difference. First operand has 47 places, 54 transitions, 212 flow. Second operand 5 states and 112 transitions. [2024-10-24 12:28:31,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 104 transitions, 530 flow [2024-10-24 12:28:31,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 104 transitions, 506 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-10-24 12:28:31,917 INFO L231 Difference]: Finished difference. Result has 53 places, 55 transitions, 203 flow [2024-10-24 12:28:31,917 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=53, PETRI_TRANSITIONS=55} [2024-10-24 12:28:31,918 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-10-24 12:28:31,918 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 55 transitions, 203 flow [2024-10-24 12:28:31,918 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) [2024-10-24 12:28:31,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:31,919 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:28:31,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 12:28:32,119 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,SelfDestructingSolverStorable2 [2024-10-24 12:28:32,120 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 12:28:32,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:32,121 INFO L85 PathProgramCache]: Analyzing trace with hash -507933382, now seen corresponding path program 3 times [2024-10-24 12:28:32,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:32,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818708353] [2024-10-24 12:28:32,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:32,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:32,364 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-24 12:28:32,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:32,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818708353] [2024-10-24 12:28:32,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818708353] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:28:32,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680850424] [2024-10-24 12:28:32,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 12:28:32,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:28:32,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:28:32,368 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:28:32,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 12:28:32,565 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-24 12:28:32,566 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:28:32,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 12:28:32,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:28:33,823 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-24 12:28:33,824 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:28:33,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680850424] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:33,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:28:33,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-10-24 12:28:33,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880504223] [2024-10-24 12:28:33,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:33,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:28:33,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:33,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:28:33,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-24 12:28:33,827 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:28:33,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 55 transitions, 203 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) [2024-10-24 12:28:33,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:33,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:28:33,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:35,360 INFO L124 PetriNetUnfolderBase]: 3904/5601 cut-off events. [2024-10-24 12:28:35,361 INFO L125 PetriNetUnfolderBase]: For 921/921 co-relation queries the response was YES. [2024-10-24 12:28:35,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11880 conditions, 5601 events. 3904/5601 cut-off events. For 921/921 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 26283 event pairs, 2311 based on Foata normal form. 1/5093 useless extension candidates. Maximal degree in co-relation 11841. Up to 3990 conditions per place. [2024-10-24 12:28:35,398 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 89 selfloop transitions, 3 changer transitions 8/101 dead transitions. [2024-10-24 12:28:35,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 101 transitions, 517 flow [2024-10-24 12:28:35,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:28:35,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:28:35,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-10-24 12:28:35,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44081632653061226 [2024-10-24 12:28:35,401 INFO L175 Difference]: Start difference. First operand has 53 places, 55 transitions, 203 flow. Second operand 5 states and 108 transitions. [2024-10-24 12:28:35,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 101 transitions, 517 flow [2024-10-24 12:28:35,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 101 transitions, 508 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-24 12:28:35,409 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 220 flow [2024-10-24 12:28:35,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=220, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2024-10-24 12:28:35,410 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-10-24 12:28:35,410 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 220 flow [2024-10-24 12:28:35,411 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) [2024-10-24 12:28:35,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:35,412 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:28:35,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 12:28:35,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:28:35,613 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 12:28:35,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:35,614 INFO L85 PathProgramCache]: Analyzing trace with hash -105214844, now seen corresponding path program 4 times [2024-10-24 12:28:35,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:35,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642430834] [2024-10-24 12:28:35,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:35,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:35,914 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-24 12:28:35,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:35,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642430834] [2024-10-24 12:28:35,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642430834] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:28:35,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761533169] [2024-10-24 12:28:35,916 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 12:28:35,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:28:35,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:28:35,918 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:28:35,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 12:28:36,136 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 12:28:36,136 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:28:36,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 12:28:36,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:28:36,198 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-24 12:28:36,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:28:36,237 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-24 12:28:36,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761533169] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:28:36,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:28:36,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-24 12:28:36,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132023058] [2024-10-24 12:28:36,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:28:36,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 12:28:36,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:36,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 12:28:36,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2024-10-24 12:28:36,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:28:36,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 220 flow. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:36,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:36,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:28:36,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:37,262 INFO L124 PetriNetUnfolderBase]: 3875/5552 cut-off events. [2024-10-24 12:28:37,262 INFO L125 PetriNetUnfolderBase]: For 2123/2123 co-relation queries the response was YES. [2024-10-24 12:28:37,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12312 conditions, 5552 events. 3875/5552 cut-off events. For 2123/2123 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 25529 event pairs, 3170 based on Foata normal form. 1/5044 useless extension candidates. Maximal degree in co-relation 12271. Up to 5531 conditions per place. [2024-10-24 12:28:37,296 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 40 selfloop transitions, 18 changer transitions 0/59 dead transitions. [2024-10-24 12:28:37,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 354 flow [2024-10-24 12:28:37,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 12:28:37,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 12:28:37,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-10-24 12:28:37,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2536443148688047 [2024-10-24 12:28:37,301 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 220 flow. Second operand 7 states and 87 transitions. [2024-10-24 12:28:37,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 354 flow [2024-10-24 12:28:37,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 348 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-24 12:28:37,311 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 282 flow [2024-10-24 12:28:37,311 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=282, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2024-10-24 12:28:37,312 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2024-10-24 12:28:37,312 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 282 flow [2024-10-24 12:28:37,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:37,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:37,313 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:28:37,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 12:28:37,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:28:37,514 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 12:28:37,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:37,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1674624371, now seen corresponding path program 5 times [2024-10-24 12:28:37,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:37,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488032745] [2024-10-24 12:28:37,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:37,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:38,543 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 12:28:38,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:38,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488032745] [2024-10-24 12:28:38,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488032745] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:38,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:38,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:28:38,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390972781] [2024-10-24 12:28:38,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:38,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:28:38,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:38,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:28:38,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:28:38,546 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:28:38,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 282 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) [2024-10-24 12:28:38,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:38,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:28:38,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:40,469 INFO L124 PetriNetUnfolderBase]: 6867/9866 cut-off events. [2024-10-24 12:28:40,469 INFO L125 PetriNetUnfolderBase]: For 2341/2341 co-relation queries the response was YES. [2024-10-24 12:28:40,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21319 conditions, 9866 events. 6867/9866 cut-off events. For 2341/2341 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 51215 event pairs, 2548 based on Foata normal form. 1/8858 useless extension candidates. Maximal degree in co-relation 21206. Up to 4462 conditions per place. [2024-10-24 12:28:40,525 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 114 selfloop transitions, 17 changer transitions 1/133 dead transitions. [2024-10-24 12:28:40,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 133 transitions, 738 flow [2024-10-24 12:28:40,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:28:40,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:28:40,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-10-24 12:28:40,527 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5469387755102041 [2024-10-24 12:28:40,527 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 282 flow. Second operand 5 states and 134 transitions. [2024-10-24 12:28:40,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 133 transitions, 738 flow [2024-10-24 12:28:40,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 133 transitions, 702 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-10-24 12:28:40,542 INFO L231 Difference]: Finished difference. Result has 65 places, 76 transitions, 400 flow [2024-10-24 12:28:40,543 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=400, PETRI_PLACES=65, PETRI_TRANSITIONS=76} [2024-10-24 12:28:40,543 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2024-10-24 12:28:40,544 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 76 transitions, 400 flow [2024-10-24 12:28:40,545 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) [2024-10-24 12:28:40,545 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:40,545 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:28:40,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 12:28:40,545 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 12:28:40,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:40,546 INFO L85 PathProgramCache]: Analyzing trace with hash -763439597, now seen corresponding path program 6 times [2024-10-24 12:28:40,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:40,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479873225] [2024-10-24 12:28:40,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:40,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:41,453 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 12:28:41,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:41,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479873225] [2024-10-24 12:28:41,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479873225] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:41,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:41,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:28:41,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033717181] [2024-10-24 12:28:41,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:41,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:28:41,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:41,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:28:41,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:28:41,458 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:28:41,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 76 transitions, 400 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) [2024-10-24 12:28:41,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:41,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:28:41,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:44,369 INFO L124 PetriNetUnfolderBase]: 13354/18979 cut-off events. [2024-10-24 12:28:44,370 INFO L125 PetriNetUnfolderBase]: For 11913/11913 co-relation queries the response was YES. [2024-10-24 12:28:44,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46940 conditions, 18979 events. 13354/18979 cut-off events. For 11913/11913 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 107828 event pairs, 3301 based on Foata normal form. 1/18282 useless extension candidates. Maximal degree in co-relation 46841. Up to 6905 conditions per place. [2024-10-24 12:28:44,498 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 134 selfloop transitions, 35 changer transitions 3/173 dead transitions. [2024-10-24 12:28:44,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 173 transitions, 1119 flow [2024-10-24 12:28:44,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:28:44,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:28:44,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2024-10-24 12:28:44,503 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5795918367346938 [2024-10-24 12:28:44,503 INFO L175 Difference]: Start difference. First operand has 65 places, 76 transitions, 400 flow. Second operand 5 states and 142 transitions. [2024-10-24 12:28:44,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 173 transitions, 1119 flow [2024-10-24 12:28:44,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 173 transitions, 1117 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-24 12:28:44,551 INFO L231 Difference]: Finished difference. Result has 72 places, 105 transitions, 725 flow [2024-10-24 12:28:44,552 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=725, PETRI_PLACES=72, PETRI_TRANSITIONS=105} [2024-10-24 12:28:44,553 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2024-10-24 12:28:44,554 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 105 transitions, 725 flow [2024-10-24 12:28:44,554 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) [2024-10-24 12:28:44,554 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:44,554 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:28:44,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 12:28:44,554 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 12:28:44,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:44,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1901130979, now seen corresponding path program 7 times [2024-10-24 12:28:44,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:44,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525688078] [2024-10-24 12:28:44,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:44,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:45,465 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 12:28:45,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:45,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525688078] [2024-10-24 12:28:45,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525688078] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:45,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:45,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:28:45,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892689348] [2024-10-24 12:28:45,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:45,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:28:45,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:45,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:28:45,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:28:45,469 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:28:45,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 105 transitions, 725 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) [2024-10-24 12:28:45,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:45,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:28:45,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:50,310 INFO L124 PetriNetUnfolderBase]: 20622/29187 cut-off events. [2024-10-24 12:28:50,310 INFO L125 PetriNetUnfolderBase]: For 39782/39782 co-relation queries the response was YES. [2024-10-24 12:28:50,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83187 conditions, 29187 events. 20622/29187 cut-off events. For 39782/39782 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 173558 event pairs, 6419 based on Foata normal form. 1/29188 useless extension candidates. Maximal degree in co-relation 83084. Up to 12446 conditions per place. [2024-10-24 12:28:50,564 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 168 selfloop transitions, 49 changer transitions 2/220 dead transitions. [2024-10-24 12:28:50,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 220 transitions, 1742 flow [2024-10-24 12:28:50,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:28:50,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:28:50,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-10-24 12:28:50,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6040816326530613 [2024-10-24 12:28:50,569 INFO L175 Difference]: Start difference. First operand has 72 places, 105 transitions, 725 flow. Second operand 5 states and 148 transitions. [2024-10-24 12:28:50,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 220 transitions, 1742 flow [2024-10-24 12:28:50,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 220 transitions, 1726 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-10-24 12:28:50,714 INFO L231 Difference]: Finished difference. Result has 80 places, 143 transitions, 1273 flow [2024-10-24 12:28:50,715 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1273, PETRI_PLACES=80, PETRI_TRANSITIONS=143} [2024-10-24 12:28:50,717 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places. [2024-10-24 12:28:50,717 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 143 transitions, 1273 flow [2024-10-24 12:28:50,717 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) [2024-10-24 12:28:50,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:50,718 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:28:50,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 12:28:50,718 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 12:28:50,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:50,718 INFO L85 PathProgramCache]: Analyzing trace with hash 186084019, now seen corresponding path program 8 times [2024-10-24 12:28:50,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:50,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512469629] [2024-10-24 12:28:50,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:50,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:51,601 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 12:28:51,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:51,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512469629] [2024-10-24 12:28:51,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512469629] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:51,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:51,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:28:51,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664256574] [2024-10-24 12:28:51,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:51,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:28:51,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:51,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:28:51,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:28:51,604 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:28:51,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 143 transitions, 1273 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) [2024-10-24 12:28:51,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:51,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:28:51,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:57,083 INFO L124 PetriNetUnfolderBase]: 21549/30539 cut-off events. [2024-10-24 12:28:57,083 INFO L125 PetriNetUnfolderBase]: For 76306/76306 co-relation queries the response was YES. [2024-10-24 12:28:57,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97480 conditions, 30539 events. 21549/30539 cut-off events. For 76306/76306 co-relation queries the response was YES. Maximal size of possible extension queue 1101. Compared 183844 event pairs, 4919 based on Foata normal form. 1/30540 useless extension candidates. Maximal degree in co-relation 97373. Up to 12120 conditions per place. [2024-10-24 12:28:57,356 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 188 selfloop transitions, 81 changer transitions 2/272 dead transitions. [2024-10-24 12:28:57,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 272 transitions, 2471 flow [2024-10-24 12:28:57,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:28:57,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:28:57,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-10-24 12:28:57,358 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2024-10-24 12:28:57,358 INFO L175 Difference]: Start difference. First operand has 80 places, 143 transitions, 1273 flow. Second operand 6 states and 180 transitions. [2024-10-24 12:28:57,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 272 transitions, 2471 flow [2024-10-24 12:28:57,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 272 transitions, 2417 flow, removed 27 selfloop flow, removed 0 redundant places. [2024-10-24 12:28:57,710 INFO L231 Difference]: Finished difference. Result has 89 places, 175 transitions, 1900 flow [2024-10-24 12:28:57,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1900, PETRI_PLACES=89, PETRI_TRANSITIONS=175} [2024-10-24 12:28:57,711 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 46 predicate places. [2024-10-24 12:28:57,711 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 175 transitions, 1900 flow [2024-10-24 12:28:57,711 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) [2024-10-24 12:28:57,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:57,711 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-10-24 12:28:57,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 12:28:57,712 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)] === [2024-10-24 12:28:57,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:57,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1406305834, now seen corresponding path program 1 times [2024-10-24 12:28:57,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:57,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236300385] [2024-10-24 12:28:57,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:57,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:58,012 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 12:28:58,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:58,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236300385] [2024-10-24 12:28:58,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236300385] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:58,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:58,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:28:58,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085676062] [2024-10-24 12:28:58,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:58,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:28:58,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:58,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:28:58,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:28:58,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:28:58,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 175 transitions, 1900 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2024-10-24 12:28:58,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:58,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:28:58,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:29:03,717 INFO L124 PetriNetUnfolderBase]: 22412/31845 cut-off events. [2024-10-24 12:29:03,717 INFO L125 PetriNetUnfolderBase]: For 110851/110851 co-relation queries the response was YES. [2024-10-24 12:29:04,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107694 conditions, 31845 events. 22412/31845 cut-off events. For 110851/110851 co-relation queries the response was YES. Maximal size of possible extension queue 1186. Compared 194081 event pairs, 12150 based on Foata normal form. 33/31878 useless extension candidates. Maximal degree in co-relation 107583. Up to 24221 conditions per place. [2024-10-24 12:29:04,162 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 225 selfloop transitions, 17 changer transitions 17/260 dead transitions. [2024-10-24 12:29:04,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 260 transitions, 3056 flow [2024-10-24 12:29:04,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:29:04,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:29:04,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-10-24 12:29:04,164 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47346938775510206 [2024-10-24 12:29:04,164 INFO L175 Difference]: Start difference. First operand has 89 places, 175 transitions, 1900 flow. Second operand 5 states and 116 transitions. [2024-10-24 12:29:04,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 260 transitions, 3056 flow [2024-10-24 12:29:04,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 260 transitions, 3018 flow, removed 19 selfloop flow, removed 0 redundant places. [2024-10-24 12:29:04,763 INFO L231 Difference]: Finished difference. Result has 96 places, 177 transitions, 1951 flow [2024-10-24 12:29:04,763 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1951, PETRI_PLACES=96, PETRI_TRANSITIONS=177} [2024-10-24 12:29:04,764 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 53 predicate places. [2024-10-24 12:29:04,764 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 177 transitions, 1951 flow [2024-10-24 12:29:04,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2024-10-24 12:29:04,764 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:04,765 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-10-24 12:29:04,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 12:29:04,765 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)] === [2024-10-24 12:29:04,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:04,765 INFO L85 PathProgramCache]: Analyzing trace with hash 2120424120, now seen corresponding path program 1 times [2024-10-24 12:29:04,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:04,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405399535] [2024-10-24 12:29:04,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:04,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:05,053 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 12:29:05,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:05,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405399535] [2024-10-24 12:29:05,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405399535] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:05,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:05,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:29:05,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376574784] [2024-10-24 12:29:05,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:05,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:29:05,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:05,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:29:05,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:29:05,058 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:05,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 177 transitions, 1951 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2024-10-24 12:29:05,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:05,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:05,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:29:11,144 INFO L124 PetriNetUnfolderBase]: 22699/32358 cut-off events. [2024-10-24 12:29:11,144 INFO L125 PetriNetUnfolderBase]: For 110042/110042 co-relation queries the response was YES. [2024-10-24 12:29:11,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107766 conditions, 32358 events. 22699/32358 cut-off events. For 110042/110042 co-relation queries the response was YES. Maximal size of possible extension queue 1194. Compared 199123 event pairs, 9341 based on Foata normal form. 72/32430 useless extension candidates. Maximal degree in co-relation 107651. Up to 19180 conditions per place. [2024-10-24 12:29:11,447 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 205 selfloop transitions, 14 changer transitions 42/262 dead transitions. [2024-10-24 12:29:11,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 262 transitions, 2950 flow [2024-10-24 12:29:11,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:29:11,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:29:11,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-10-24 12:29:11,449 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2024-10-24 12:29:11,449 INFO L175 Difference]: Start difference. First operand has 96 places, 177 transitions, 1951 flow. Second operand 5 states and 127 transitions. [2024-10-24 12:29:11,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 262 transitions, 2950 flow [2024-10-24 12:29:11,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 262 transitions, 2901 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-10-24 12:29:11,920 INFO L231 Difference]: Finished difference. Result has 99 places, 162 transitions, 1757 flow [2024-10-24 12:29:11,921 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1882, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1757, PETRI_PLACES=99, PETRI_TRANSITIONS=162} [2024-10-24 12:29:11,922 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 56 predicate places. [2024-10-24 12:29:11,922 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 162 transitions, 1757 flow [2024-10-24 12:29:11,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2024-10-24 12:29:11,922 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:29:11,922 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-10-24 12:29:11,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 12:29:11,923 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)] === [2024-10-24 12:29:11,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:29:11,923 INFO L85 PathProgramCache]: Analyzing trace with hash 596846704, now seen corresponding path program 1 times [2024-10-24 12:29:11,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:29:11,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493217769] [2024-10-24 12:29:11,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:29:11,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:29:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:29:12,365 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 12:29:12,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:29:12,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493217769] [2024-10-24 12:29:12,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493217769] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:29:12,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:29:12,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:29:12,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156304123] [2024-10-24 12:29:12,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:29:12,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:29:12,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:29:12,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:29:12,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:29:12,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-24 12:29:12,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 162 transitions, 1757 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2024-10-24 12:29:12,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:29:12,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-24 12:29:12,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand