./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 14:33:53,046 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 14:33:53,119 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 14:33:53,123 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 14:33:53,123 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 14:33:53,149 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 14:33:53,150 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 14:33:53,150 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 14:33:53,151 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 14:33:53,151 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 14:33:53,151 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 14:33:53,152 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 14:33:53,153 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 14:33:53,156 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 14:33:53,156 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 14:33:53,157 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 14:33:53,157 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 14:33:53,157 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 14:33:53,158 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 14:33:53,158 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 14:33:53,158 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 14:33:53,159 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 14:33:53,159 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 14:33:53,159 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 14:33:53,160 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 14:33:53,160 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 14:33:53,160 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 14:33:53,160 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 14:33:53,161 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 14:33:53,161 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 14:33:53,161 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 14:33:53,161 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 14:33:53,161 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:33:53,162 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 14:33:53,162 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 14:33:53,164 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 14:33:53,164 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 14:33:53,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 14:33:53,164 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 14:33:53,164 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 14:33:53,164 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 14:33:53,165 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 14:33:53,165 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 [2024-10-14 14:33:53,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 14:33:53,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 14:33:53,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 14:33:53,433 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 14:33:53,434 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 14:33:53,435 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2024-10-14 14:33:54,825 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 14:33:55,010 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 14:33:55,010 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2024-10-14 14:33:55,019 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc4864795/504da1508ff24e06a7679c773694c792/FLAG3652e29e3 [2024-10-14 14:33:55,034 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc4864795/504da1508ff24e06a7679c773694c792 [2024-10-14 14:33:55,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 14:33:55,038 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 14:33:55,041 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 14:33:55,041 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 14:33:55,046 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 14:33:55,046 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:33:55" (1/1) ... [2024-10-14 14:33:55,049 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea96ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:33:55, skipping insertion in model container [2024-10-14 14:33:55,049 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:33:55" (1/1) ... [2024-10-14 14:33:55,076 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 14:33:55,277 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-array-int-trans.wvr.c[2767,2780] [2024-10-14 14:33:55,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:33:55,301 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 14:33:55,323 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-array-int-trans.wvr.c[2767,2780] [2024-10-14 14:33:55,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:33:55,342 INFO L204 MainTranslator]: Completed translation [2024-10-14 14:33:55,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:33:55 WrapperNode [2024-10-14 14:33:55,343 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 14:33:55,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 14:33:55,344 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 14:33:55,345 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 14:33:55,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:33:55" (1/1) ... [2024-10-14 14:33:55,359 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:33:55" (1/1) ... [2024-10-14 14:33:55,387 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 13, calls inlined = 21, statements flattened = 270 [2024-10-14 14:33:55,389 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 14:33:55,389 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 14:33:55,389 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 14:33:55,390 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 14:33:55,403 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:33:55" (1/1) ... [2024-10-14 14:33:55,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:33:55" (1/1) ... [2024-10-14 14:33:55,412 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:33:55" (1/1) ... [2024-10-14 14:33:55,438 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-14 14:33:55,438 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:33:55" (1/1) ... [2024-10-14 14:33:55,439 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:33:55" (1/1) ... [2024-10-14 14:33:55,455 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:33:55" (1/1) ... [2024-10-14 14:33:55,464 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:33:55" (1/1) ... [2024-10-14 14:33:55,465 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:33:55" (1/1) ... [2024-10-14 14:33:55,467 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:33:55" (1/1) ... [2024-10-14 14:33:55,474 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 14:33:55,475 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 14:33:55,475 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 14:33:55,475 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 14:33:55,476 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:33:55" (1/1) ... [2024-10-14 14:33:55,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:33:55,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:33:55,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 14:33:55,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 14:33:55,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 14:33:55,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 14:33:55,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 14:33:55,542 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 14:33:55,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 14:33:55,542 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 14:33:55,543 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 14:33:55,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 14:33:55,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 14:33:55,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 14:33:55,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 14:33:55,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 14:33:55,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 14:33:55,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 14:33:55,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 14:33:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 14:33:55,547 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 14:33:55,655 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 14:33:55,656 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 14:33:56,068 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 14:33:56,069 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 14:33:56,413 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 14:33:56,413 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-14 14:33:56,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:33:56 BoogieIcfgContainer [2024-10-14 14:33:56,414 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 14:33:56,417 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 14:33:56,417 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 14:33:56,420 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 14:33:56,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:33:55" (1/3) ... [2024-10-14 14:33:56,422 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5feccf64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:33:56, skipping insertion in model container [2024-10-14 14:33:56,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:33:55" (2/3) ... [2024-10-14 14:33:56,422 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5feccf64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:33:56, skipping insertion in model container [2024-10-14 14:33:56,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:33:56" (3/3) ... [2024-10-14 14:33:56,424 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2024-10-14 14:33:56,440 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 14:33:56,440 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 14:33:56,441 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 14:33:56,495 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-14 14:33:56,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 40 transitions, 101 flow [2024-10-14 14:33:56,548 INFO L124 PetriNetUnfolderBase]: 9/37 cut-off events. [2024-10-14 14:33:56,548 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 14:33:56,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 37 events. 9/37 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-10-14 14:33:56,551 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 40 transitions, 101 flow [2024-10-14 14:33:56,554 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 36 transitions, 90 flow [2024-10-14 14:33:56,562 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 14:33:56,568 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;@7883b84b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 14:33:56,568 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-14 14:33:56,579 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 14:33:56,579 INFO L124 PetriNetUnfolderBase]: 9/35 cut-off events. [2024-10-14 14:33:56,579 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 14:33:56,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:33:56,581 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] [2024-10-14 14:33:56,582 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:33:56,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:33:56,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1791323821, now seen corresponding path program 1 times [2024-10-14 14:33:56,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:33:56,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705338014] [2024-10-14 14:33:56,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:33:56,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:33:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:33:57,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:33:57,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:33:57,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705338014] [2024-10-14 14:33:57,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705338014] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:33:57,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:33:57,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 14:33:57,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790289652] [2024-10-14 14:33:57,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:33:57,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 14:33:57,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:33:57,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 14:33:57,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 14:33:57,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-14 14:33:57,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 90 flow. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:33:57,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:33:57,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-14 14:33:57,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:33:58,138 INFO L124 PetriNetUnfolderBase]: 2897/3947 cut-off events. [2024-10-14 14:33:58,139 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2024-10-14 14:33:58,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8176 conditions, 3947 events. 2897/3947 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 16746 event pairs, 254 based on Foata normal form. 1/2840 useless extension candidates. Maximal degree in co-relation 5265. Up to 1295 conditions per place. [2024-10-14 14:33:58,168 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 122 selfloop transitions, 13 changer transitions 2/138 dead transitions. [2024-10-14 14:33:58,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 138 transitions, 622 flow [2024-10-14 14:33:58,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 14:33:58,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 14:33:58,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-10-14 14:33:58,183 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-10-14 14:33:58,185 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 90 flow. Second operand 9 states and 174 transitions. [2024-10-14 14:33:58,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 138 transitions, 622 flow [2024-10-14 14:33:58,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 138 transitions, 574 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-14 14:33:58,201 INFO L231 Difference]: Finished difference. Result has 42 places, 49 transitions, 156 flow [2024-10-14 14:33:58,203 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=42, PETRI_TRANSITIONS=49} [2024-10-14 14:33:58,207 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2024-10-14 14:33:58,207 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 49 transitions, 156 flow [2024-10-14 14:33:58,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:33:58,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:33:58,208 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] [2024-10-14 14:33:58,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 14:33:58,209 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:33:58,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:33:58,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1504680807, now seen corresponding path program 2 times [2024-10-14 14:33:58,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:33:58,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766217716] [2024-10-14 14:33:58,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:33:58,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:33:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:33:58,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:33:58,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:33:58,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766217716] [2024-10-14 14:33:58,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766217716] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:33:58,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:33:58,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 14:33:58,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158089544] [2024-10-14 14:33:58,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:33:58,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 14:33:58,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:33:58,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 14:33:58,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 14:33:58,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-14 14:33:58,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 49 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:33:58,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:33:58,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-14 14:33:58,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:33:59,096 INFO L124 PetriNetUnfolderBase]: 3338/4609 cut-off events. [2024-10-14 14:33:59,097 INFO L125 PetriNetUnfolderBase]: For 573/573 co-relation queries the response was YES. [2024-10-14 14:33:59,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10154 conditions, 4609 events. 3338/4609 cut-off events. For 573/573 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 20971 event pairs, 339 based on Foata normal form. 1/3781 useless extension candidates. Maximal degree in co-relation 7203. Up to 1443 conditions per place. [2024-10-14 14:33:59,117 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 124 selfloop transitions, 15 changer transitions 2/142 dead transitions. [2024-10-14 14:33:59,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 142 transitions, 655 flow [2024-10-14 14:33:59,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 14:33:59,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 14:33:59,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-10-14 14:33:59,121 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-10-14 14:33:59,122 INFO L175 Difference]: Start difference. First operand has 42 places, 49 transitions, 156 flow. Second operand 9 states and 176 transitions. [2024-10-14 14:33:59,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 142 transitions, 655 flow [2024-10-14 14:33:59,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 142 transitions, 653 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-14 14:33:59,129 INFO L231 Difference]: Finished difference. Result has 52 places, 53 transitions, 218 flow [2024-10-14 14:33:59,130 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=218, PETRI_PLACES=52, PETRI_TRANSITIONS=53} [2024-10-14 14:33:59,131 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 15 predicate places. [2024-10-14 14:33:59,131 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 53 transitions, 218 flow [2024-10-14 14:33:59,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:33:59,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:33:59,132 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:33:59,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 14:33:59,132 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:33:59,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:33:59,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1891129723, now seen corresponding path program 1 times [2024-10-14 14:33:59,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:33:59,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881322606] [2024-10-14 14:33:59,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:33:59,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:33:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:33:59,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:33:59,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:33:59,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881322606] [2024-10-14 14:33:59,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881322606] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:33:59,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342495482] [2024-10-14 14:33:59,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:33:59,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:33:59,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:33:59,353 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) [2024-10-14 14:33:59,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 14:33:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:33:59,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 14:33:59,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:33:59,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:33:59,589 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:33:59,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:33:59,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342495482] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 14:33:59,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 14:33:59,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 12 [2024-10-14 14:33:59,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137240043] [2024-10-14 14:33:59,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:33:59,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 14:33:59,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:33:59,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 14:33:59,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-14 14:33:59,699 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-14 14:33:59,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 218 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:33:59,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:33:59,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-14 14:33:59,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:34:00,437 INFO L124 PetriNetUnfolderBase]: 4570/6299 cut-off events. [2024-10-14 14:34:00,437 INFO L125 PetriNetUnfolderBase]: For 2968/2968 co-relation queries the response was YES. [2024-10-14 14:34:00,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14766 conditions, 6299 events. 4570/6299 cut-off events. For 2968/2968 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 27897 event pairs, 2476 based on Foata normal form. 1/5189 useless extension candidates. Maximal degree in co-relation 10928. Up to 3282 conditions per place. [2024-10-14 14:34:00,466 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 119 selfloop transitions, 8 changer transitions 3/131 dead transitions. [2024-10-14 14:34:00,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 131 transitions, 693 flow [2024-10-14 14:34:00,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 14:34:00,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 14:34:00,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2024-10-14 14:34:00,468 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-10-14 14:34:00,468 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 218 flow. Second operand 7 states and 145 transitions. [2024-10-14 14:34:00,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 131 transitions, 693 flow [2024-10-14 14:34:00,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 131 transitions, 676 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-14 14:34:00,476 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 247 flow [2024-10-14 14:34:00,477 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=247, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2024-10-14 14:34:00,477 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 20 predicate places. [2024-10-14 14:34:00,477 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 247 flow [2024-10-14 14:34:00,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:00,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:34:00,478 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:34:00,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 14:34:00,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:34:00,679 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:34:00,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:34:00,680 INFO L85 PathProgramCache]: Analyzing trace with hash 421060979, now seen corresponding path program 1 times [2024-10-14 14:34:00,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:34:00,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484878390] [2024-10-14 14:34:00,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:34:00,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:34:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:34:00,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:34:00,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:34:00,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484878390] [2024-10-14 14:34:00,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484878390] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:34:00,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:34:00,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:34:00,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237294487] [2024-10-14 14:34:00,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:34:00,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:34:00,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:34:00,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:34:00,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:34:00,822 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-14 14:34:00,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 247 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:00,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:34:00,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-14 14:34:00,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:34:01,547 INFO L124 PetriNetUnfolderBase]: 5454/7667 cut-off events. [2024-10-14 14:34:01,547 INFO L125 PetriNetUnfolderBase]: For 4057/4057 co-relation queries the response was YES. [2024-10-14 14:34:01,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18768 conditions, 7667 events. 5454/7667 cut-off events. For 4057/4057 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 37517 event pairs, 2454 based on Foata normal form. 0/6755 useless extension candidates. Maximal degree in co-relation 15490. Up to 4606 conditions per place. [2024-10-14 14:34:01,589 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 99 selfloop transitions, 11 changer transitions 0/111 dead transitions. [2024-10-14 14:34:01,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 111 transitions, 664 flow [2024-10-14 14:34:01,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:34:01,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:34:01,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2024-10-14 14:34:01,590 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.495 [2024-10-14 14:34:01,590 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 247 flow. Second operand 5 states and 99 transitions. [2024-10-14 14:34:01,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 111 transitions, 664 flow [2024-10-14 14:34:01,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 111 transitions, 653 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-14 14:34:01,604 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 328 flow [2024-10-14 14:34:01,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2024-10-14 14:34:01,605 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 24 predicate places. [2024-10-14 14:34:01,606 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 328 flow [2024-10-14 14:34:01,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:01,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:34:01,606 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:34:01,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 14:34:01,606 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:34:01,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:34:01,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1385803279, now seen corresponding path program 1 times [2024-10-14 14:34:01,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:34:01,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856407522] [2024-10-14 14:34:01,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:34:01,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:34:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:34:01,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:34:01,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:34:01,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856407522] [2024-10-14 14:34:01,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856407522] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:34:01,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:34:01,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:34:01,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625769670] [2024-10-14 14:34:01,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:34:01,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:34:01,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:34:01,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:34:01,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:34:01,708 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-14 14:34:01,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 328 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:01,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:34:01,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-14 14:34:01,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:34:02,366 INFO L124 PetriNetUnfolderBase]: 3800/5442 cut-off events. [2024-10-14 14:34:02,367 INFO L125 PetriNetUnfolderBase]: For 4113/4113 co-relation queries the response was YES. [2024-10-14 14:34:02,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13680 conditions, 5442 events. 3800/5442 cut-off events. For 4113/4113 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 26355 event pairs, 1572 based on Foata normal form. 0/5057 useless extension candidates. Maximal degree in co-relation 10643. Up to 2570 conditions per place. [2024-10-14 14:34:02,391 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 87 selfloop transitions, 6 changer transitions 5/99 dead transitions. [2024-10-14 14:34:02,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 99 transitions, 600 flow [2024-10-14 14:34:02,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:34:02,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:34:02,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-10-14 14:34:02,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-10-14 14:34:02,395 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 328 flow. Second operand 5 states and 104 transitions. [2024-10-14 14:34:02,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 99 transitions, 600 flow [2024-10-14 14:34:02,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 99 transitions, 572 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-10-14 14:34:02,410 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 255 flow [2024-10-14 14:34:02,410 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-10-14 14:34:02,411 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 26 predicate places. [2024-10-14 14:34:02,411 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 255 flow [2024-10-14 14:34:02,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:02,412 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:34:02,412 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:34:02,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 14:34:02,412 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:34:02,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:34:02,413 INFO L85 PathProgramCache]: Analyzing trace with hash -139095454, now seen corresponding path program 1 times [2024-10-14 14:34:02,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:34:02,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159362758] [2024-10-14 14:34:02,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:34:02,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:34:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:34:02,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:34:02,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:34:02,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159362758] [2024-10-14 14:34:02,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159362758] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:34:02,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:34:02,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 14:34:02,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371398860] [2024-10-14 14:34:02,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:34:02,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:34:02,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:34:02,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:34:02,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-14 14:34:02,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-14 14:34:02,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 255 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:02,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:34:02,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-14 14:34:02,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:34:03,426 INFO L124 PetriNetUnfolderBase]: 3820/5452 cut-off events. [2024-10-14 14:34:03,426 INFO L125 PetriNetUnfolderBase]: For 3238/3238 co-relation queries the response was YES. [2024-10-14 14:34:03,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13354 conditions, 5452 events. 3820/5452 cut-off events. For 3238/3238 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 26046 event pairs, 1320 based on Foata normal form. 2/5069 useless extension candidates. Maximal degree in co-relation 11209. Up to 2527 conditions per place. [2024-10-14 14:34:03,447 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 83 selfloop transitions, 5 changer transitions 59/148 dead transitions. [2024-10-14 14:34:03,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 148 transitions, 796 flow [2024-10-14 14:34:03,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 14:34:03,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 14:34:03,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-10-14 14:34:03,449 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-10-14 14:34:03,449 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 255 flow. Second operand 8 states and 170 transitions. [2024-10-14 14:34:03,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 148 transitions, 796 flow [2024-10-14 14:34:03,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 148 transitions, 783 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-14 14:34:03,460 INFO L231 Difference]: Finished difference. Result has 70 places, 53 transitions, 239 flow [2024-10-14 14:34:03,461 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=239, PETRI_PLACES=70, PETRI_TRANSITIONS=53} [2024-10-14 14:34:03,461 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 33 predicate places. [2024-10-14 14:34:03,462 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 53 transitions, 239 flow [2024-10-14 14:34:03,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:03,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:34:03,463 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:34:03,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 14:34:03,464 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:34:03,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:34:03,466 INFO L85 PathProgramCache]: Analyzing trace with hash 49833286, now seen corresponding path program 2 times [2024-10-14 14:34:03,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:34:03,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647223589] [2024-10-14 14:34:03,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:34:03,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:34:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:34:03,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:34:03,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:34:03,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647223589] [2024-10-14 14:34:03,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647223589] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:34:03,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:34:03,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 14:34:03,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180979824] [2024-10-14 14:34:03,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:34:03,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:34:03,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:34:03,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:34:03,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-14 14:34:03,643 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-14 14:34:03,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 53 transitions, 239 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:03,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:34:03,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-14 14:34:03,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:34:04,411 INFO L124 PetriNetUnfolderBase]: 4178/5966 cut-off events. [2024-10-14 14:34:04,411 INFO L125 PetriNetUnfolderBase]: For 4106/4106 co-relation queries the response was YES. [2024-10-14 14:34:04,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15142 conditions, 5966 events. 4178/5966 cut-off events. For 4106/4106 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 28721 event pairs, 1704 based on Foata normal form. 2/5556 useless extension candidates. Maximal degree in co-relation 15093. Up to 2527 conditions per place. [2024-10-14 14:34:04,435 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 102 selfloop transitions, 6 changer transitions 44/153 dead transitions. [2024-10-14 14:34:04,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 153 transitions, 868 flow [2024-10-14 14:34:04,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 14:34:04,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 14:34:04,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-10-14 14:34:04,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.540625 [2024-10-14 14:34:04,437 INFO L175 Difference]: Start difference. First operand has 70 places, 53 transitions, 239 flow. Second operand 8 states and 173 transitions. [2024-10-14 14:34:04,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 153 transitions, 868 flow [2024-10-14 14:34:04,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 153 transitions, 817 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-10-14 14:34:04,451 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 255 flow [2024-10-14 14:34:04,452 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=255, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-10-14 14:34:04,452 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 33 predicate places. [2024-10-14 14:34:04,452 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 255 flow [2024-10-14 14:34:04,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:04,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:34:04,453 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:34:04,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 14:34:04,453 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:34:04,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:34:04,454 INFO L85 PathProgramCache]: Analyzing trace with hash -808810084, now seen corresponding path program 3 times [2024-10-14 14:34:04,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:34:04,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043983647] [2024-10-14 14:34:04,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:34:04,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:34:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:34:04,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:34:04,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:34:04,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043983647] [2024-10-14 14:34:04,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043983647] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:34:04,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:34:04,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 14:34:04,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482478981] [2024-10-14 14:34:04,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:34:04,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:34:04,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:34:04,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:34:04,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-14 14:34:04,597 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-14 14:34:04,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 255 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:04,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:34:04,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-14 14:34:04,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:34:05,343 INFO L124 PetriNetUnfolderBase]: 3860/5517 cut-off events. [2024-10-14 14:34:05,343 INFO L125 PetriNetUnfolderBase]: For 3977/3977 co-relation queries the response was YES. [2024-10-14 14:34:05,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14278 conditions, 5517 events. 3860/5517 cut-off events. For 3977/3977 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 25817 event pairs, 1745 based on Foata normal form. 2/5129 useless extension candidates. Maximal degree in co-relation 14240. Up to 2527 conditions per place. [2024-10-14 14:34:05,364 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 82 selfloop transitions, 5 changer transitions 58/146 dead transitions. [2024-10-14 14:34:05,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 146 transitions, 821 flow [2024-10-14 14:34:05,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 14:34:05,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 14:34:05,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-10-14 14:34:05,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-10-14 14:34:05,366 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 255 flow. Second operand 8 states and 168 transitions. [2024-10-14 14:34:05,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 146 transitions, 821 flow [2024-10-14 14:34:05,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 146 transitions, 794 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-10-14 14:34:05,380 INFO L231 Difference]: Finished difference. Result has 74 places, 55 transitions, 259 flow [2024-10-14 14:34:05,380 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=259, PETRI_PLACES=74, PETRI_TRANSITIONS=55} [2024-10-14 14:34:05,381 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 37 predicate places. [2024-10-14 14:34:05,381 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 55 transitions, 259 flow [2024-10-14 14:34:05,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:05,381 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:34:05,381 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:34:05,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 14:34:05,382 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:34:05,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:34:05,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1596420867, now seen corresponding path program 1 times [2024-10-14 14:34:05,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:34:05,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023554645] [2024-10-14 14:34:05,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:34:05,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:34:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:34:05,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:34:05,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:34:05,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023554645] [2024-10-14 14:34:05,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023554645] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:34:05,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:34:05,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 14:34:05,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540943848] [2024-10-14 14:34:05,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:34:05,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:34:05,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:34:05,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:34:05,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-14 14:34:05,520 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-14 14:34:05,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 55 transitions, 259 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:05,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:34:05,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-14 14:34:05,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:34:06,849 INFO L124 PetriNetUnfolderBase]: 9020/12758 cut-off events. [2024-10-14 14:34:06,850 INFO L125 PetriNetUnfolderBase]: For 9668/9668 co-relation queries the response was YES. [2024-10-14 14:34:06,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32257 conditions, 12758 events. 9020/12758 cut-off events. For 9668/9668 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 68410 event pairs, 2572 based on Foata normal form. 4/11712 useless extension candidates. Maximal degree in co-relation 32182. Up to 3835 conditions per place. [2024-10-14 14:34:06,927 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 160 selfloop transitions, 28 changer transitions 11/200 dead transitions. [2024-10-14 14:34:06,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 200 transitions, 1255 flow [2024-10-14 14:34:06,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 14:34:06,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 14:34:06,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-10-14 14:34:06,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-10-14 14:34:06,929 INFO L175 Difference]: Start difference. First operand has 74 places, 55 transitions, 259 flow. Second operand 9 states and 184 transitions. [2024-10-14 14:34:06,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 200 transitions, 1255 flow [2024-10-14 14:34:06,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 200 transitions, 1209 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-10-14 14:34:06,960 INFO L231 Difference]: Finished difference. Result has 79 places, 81 transitions, 522 flow [2024-10-14 14:34:06,960 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=522, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2024-10-14 14:34:06,961 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 42 predicate places. [2024-10-14 14:34:06,961 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 522 flow [2024-10-14 14:34:06,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:06,961 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:34:06,961 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:34:06,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 14:34:06,962 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)] === [2024-10-14 14:34:06,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:34:06,962 INFO L85 PathProgramCache]: Analyzing trace with hash 89447332, now seen corresponding path program 1 times [2024-10-14 14:34:06,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:34:06,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804524253] [2024-10-14 14:34:06,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:34:06,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:34:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:34:07,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:34:07,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:34:07,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804524253] [2024-10-14 14:34:07,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804524253] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:34:07,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318157363] [2024-10-14 14:34:07,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:34:07,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:34:07,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:34:07,184 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) [2024-10-14 14:34:07,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 14:34:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:34:07,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 14:34:07,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:34:07,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:34:07,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:34:07,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:34:07,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318157363] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 14:34:07,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 14:34:07,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 16 [2024-10-14 14:34:07,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993998311] [2024-10-14 14:34:07,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:34:07,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:34:07,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:34:07,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:34:07,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-10-14 14:34:07,541 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-14 14:34:07,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 522 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:07,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:34:07,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-14 14:34:07,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:34:08,380 INFO L124 PetriNetUnfolderBase]: 8062/11384 cut-off events. [2024-10-14 14:34:08,380 INFO L125 PetriNetUnfolderBase]: For 14152/14152 co-relation queries the response was YES. [2024-10-14 14:34:08,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32080 conditions, 11384 events. 8062/11384 cut-off events. For 14152/14152 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 60124 event pairs, 3041 based on Foata normal form. 2/11022 useless extension candidates. Maximal degree in co-relation 27805. Up to 5226 conditions per place. [2024-10-14 14:34:08,431 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 152 selfloop transitions, 28 changer transitions 8/189 dead transitions. [2024-10-14 14:34:08,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 189 transitions, 1270 flow [2024-10-14 14:34:08,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 14:34:08,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 14:34:08,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-10-14 14:34:08,432 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.553125 [2024-10-14 14:34:08,432 INFO L175 Difference]: Start difference. First operand has 79 places, 81 transitions, 522 flow. Second operand 8 states and 177 transitions. [2024-10-14 14:34:08,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 189 transitions, 1270 flow [2024-10-14 14:34:08,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 189 transitions, 1268 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-14 14:34:08,480 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 592 flow [2024-10-14 14:34:08,480 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=592, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2024-10-14 14:34:08,482 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 50 predicate places. [2024-10-14 14:34:08,482 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 592 flow [2024-10-14 14:34:08,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:08,482 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:34:08,482 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:34:08,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 14:34:08,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-14 14:34:08,684 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)] === [2024-10-14 14:34:08,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:34:08,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1253818341, now seen corresponding path program 2 times [2024-10-14 14:34:08,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:34:08,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730153795] [2024-10-14 14:34:08,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:34:08,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:34:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:34:08,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:34:08,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:34:08,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730153795] [2024-10-14 14:34:08,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730153795] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:34:08,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:34:08,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 14:34:08,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359419756] [2024-10-14 14:34:08,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:34:08,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:34:08,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:34:08,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:34:08,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-14 14:34:08,846 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-14 14:34:08,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 592 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:08,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:34:08,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-14 14:34:08,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:34:10,163 INFO L124 PetriNetUnfolderBase]: 13193/18642 cut-off events. [2024-10-14 14:34:10,163 INFO L125 PetriNetUnfolderBase]: For 25472/25472 co-relation queries the response was YES. [2024-10-14 14:34:10,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53251 conditions, 18642 events. 13193/18642 cut-off events. For 25472/25472 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 105917 event pairs, 2626 based on Foata normal form. 2/18038 useless extension candidates. Maximal degree in co-relation 48752. Up to 4686 conditions per place. [2024-10-14 14:34:10,391 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 209 selfloop transitions, 28 changer transitions 17/255 dead transitions. [2024-10-14 14:34:10,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 255 transitions, 2058 flow [2024-10-14 14:34:10,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 14:34:10,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 14:34:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-10-14 14:34:10,393 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-10-14 14:34:10,393 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 592 flow. Second operand 10 states and 204 transitions. [2024-10-14 14:34:10,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 255 transitions, 2058 flow [2024-10-14 14:34:10,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 255 transitions, 1975 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-10-14 14:34:10,472 INFO L231 Difference]: Finished difference. Result has 98 places, 98 transitions, 836 flow [2024-10-14 14:34:10,472 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=836, PETRI_PLACES=98, PETRI_TRANSITIONS=98} [2024-10-14 14:34:10,473 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 61 predicate places. [2024-10-14 14:34:10,473 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 98 transitions, 836 flow [2024-10-14 14:34:10,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:10,473 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:34:10,473 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:34:10,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 14:34:10,474 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)] === [2024-10-14 14:34:10,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:34:10,474 INFO L85 PathProgramCache]: Analyzing trace with hash -138598625, now seen corresponding path program 3 times [2024-10-14 14:34:10,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:34:10,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697986366] [2024-10-14 14:34:10,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:34:10,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:34:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:34:10,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:34:10,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:34:10,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697986366] [2024-10-14 14:34:10,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697986366] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:34:10,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:34:10,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 14:34:10,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931048909] [2024-10-14 14:34:10,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:34:10,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:34:10,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:34:10,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:34:10,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-14 14:34:10,621 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-14 14:34:10,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 98 transitions, 836 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:10,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:34:10,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-14 14:34:10,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:34:12,382 INFO L124 PetriNetUnfolderBase]: 12401/17537 cut-off events. [2024-10-14 14:34:12,382 INFO L125 PetriNetUnfolderBase]: For 31675/31675 co-relation queries the response was YES. [2024-10-14 14:34:12,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54180 conditions, 17537 events. 12401/17537 cut-off events. For 31675/31675 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 98554 event pairs, 4094 based on Foata normal form. 2/16987 useless extension candidates. Maximal degree in co-relation 42041. Up to 5047 conditions per place. [2024-10-14 14:34:12,628 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 177 selfloop transitions, 32 changer transitions 24/234 dead transitions. [2024-10-14 14:34:12,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 234 transitions, 2021 flow [2024-10-14 14:34:12,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 14:34:12,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 14:34:12,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2024-10-14 14:34:12,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5194444444444445 [2024-10-14 14:34:12,631 INFO L175 Difference]: Start difference. First operand has 98 places, 98 transitions, 836 flow. Second operand 9 states and 187 transitions. [2024-10-14 14:34:12,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 234 transitions, 2021 flow [2024-10-14 14:34:12,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 234 transitions, 1994 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-10-14 14:34:12,738 INFO L231 Difference]: Finished difference. Result has 107 places, 108 transitions, 1065 flow [2024-10-14 14:34:12,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1065, PETRI_PLACES=107, PETRI_TRANSITIONS=108} [2024-10-14 14:34:12,739 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 70 predicate places. [2024-10-14 14:34:12,739 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 108 transitions, 1065 flow [2024-10-14 14:34:12,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:12,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:34:12,740 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] [2024-10-14 14:34:12,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 14:34:12,740 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:34:12,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:34:12,740 INFO L85 PathProgramCache]: Analyzing trace with hash -625530116, now seen corresponding path program 1 times [2024-10-14 14:34:12,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:34:12,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627536403] [2024-10-14 14:34:12,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:34:12,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:34:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:34:12,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:34:12,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:34:12,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627536403] [2024-10-14 14:34:12,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627536403] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:34:12,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:34:12,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:34:12,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060303311] [2024-10-14 14:34:12,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:34:12,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:34:12,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:34:12,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:34:12,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:34:12,828 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-14 14:34:12,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 108 transitions, 1065 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:12,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:34:12,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-14 14:34:12,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:34:14,785 INFO L124 PetriNetUnfolderBase]: 19330/27117 cut-off events. [2024-10-14 14:34:14,785 INFO L125 PetriNetUnfolderBase]: For 57225/57225 co-relation queries the response was YES. [2024-10-14 14:34:15,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84749 conditions, 27117 events. 19330/27117 cut-off events. For 57225/57225 co-relation queries the response was YES. Maximal size of possible extension queue 1235. Compared 162437 event pairs, 2695 based on Foata normal form. 1/26336 useless extension candidates. Maximal degree in co-relation 76128. Up to 12299 conditions per place. [2024-10-14 14:34:15,161 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 194 selfloop transitions, 36 changer transitions 1/232 dead transitions. [2024-10-14 14:34:15,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 232 transitions, 2460 flow [2024-10-14 14:34:15,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:34:15,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 14:34:15,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-10-14 14:34:15,162 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-14 14:34:15,162 INFO L175 Difference]: Start difference. First operand has 107 places, 108 transitions, 1065 flow. Second operand 6 states and 130 transitions. [2024-10-14 14:34:15,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 232 transitions, 2460 flow [2024-10-14 14:34:15,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 232 transitions, 2249 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-10-14 14:34:15,470 INFO L231 Difference]: Finished difference. Result has 108 places, 136 transitions, 1369 flow [2024-10-14 14:34:15,470 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1369, PETRI_PLACES=108, PETRI_TRANSITIONS=136} [2024-10-14 14:34:15,470 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 71 predicate places. [2024-10-14 14:34:15,471 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 136 transitions, 1369 flow [2024-10-14 14:34:15,471 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) [2024-10-14 14:34:15,471 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:34:15,471 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] [2024-10-14 14:34:15,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 14:34:15,471 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:34:15,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:34:15,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1016759300, now seen corresponding path program 2 times [2024-10-14 14:34:15,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:34:15,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703348344] [2024-10-14 14:34:15,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:34:15,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:34:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:34:15,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:34:15,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:34:15,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703348344] [2024-10-14 14:34:15,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703348344] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:34:15,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:34:15,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:34:15,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436322828] [2024-10-14 14:34:15,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:34:15,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:34:15,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:34:15,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:34:15,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:34:15,577 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-14 14:34:15,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 136 transitions, 1369 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:15,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:34:15,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-14 14:34:15,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:34:18,509 INFO L124 PetriNetUnfolderBase]: 24550/34194 cut-off events. [2024-10-14 14:34:18,510 INFO L125 PetriNetUnfolderBase]: For 77719/77719 co-relation queries the response was YES. [2024-10-14 14:34:18,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112626 conditions, 34194 events. 24550/34194 cut-off events. For 77719/77719 co-relation queries the response was YES. Maximal size of possible extension queue 1607. Compared 209269 event pairs, 3653 based on Foata normal form. 1/34191 useless extension candidates. Maximal degree in co-relation 94597. Up to 17017 conditions per place. [2024-10-14 14:34:18,827 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 190 selfloop transitions, 54 changer transitions 1/246 dead transitions. [2024-10-14 14:34:18,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 246 transitions, 2640 flow [2024-10-14 14:34:18,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:34:18,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 14:34:18,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-10-14 14:34:18,829 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-10-14 14:34:18,829 INFO L175 Difference]: Start difference. First operand has 108 places, 136 transitions, 1369 flow. Second operand 6 states and 132 transitions. [2024-10-14 14:34:18,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 246 transitions, 2640 flow [2024-10-14 14:34:19,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 246 transitions, 2612 flow, removed 14 selfloop flow, removed 0 redundant places. [2024-10-14 14:34:19,216 INFO L231 Difference]: Finished difference. Result has 116 places, 162 transitions, 1878 flow [2024-10-14 14:34:19,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1341, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1878, PETRI_PLACES=116, PETRI_TRANSITIONS=162} [2024-10-14 14:34:19,217 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 79 predicate places. [2024-10-14 14:34:19,217 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 162 transitions, 1878 flow [2024-10-14 14:34:19,218 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) [2024-10-14 14:34:19,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:34:19,218 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] [2024-10-14 14:34:19,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 14:34:19,218 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:34:19,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:34:19,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1955319854, now seen corresponding path program 3 times [2024-10-14 14:34:19,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:34:19,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126815407] [2024-10-14 14:34:19,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:34:19,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:34:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:34:19,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:34:19,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:34:19,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126815407] [2024-10-14 14:34:19,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126815407] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:34:19,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:34:19,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:34:19,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40193548] [2024-10-14 14:34:19,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:34:19,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:34:19,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:34:19,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:34:19,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:34:19,336 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-14 14:34:19,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 162 transitions, 1878 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:19,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:34:19,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-14 14:34:19,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:34:22,968 INFO L124 PetriNetUnfolderBase]: 27255/38058 cut-off events. [2024-10-14 14:34:22,969 INFO L125 PetriNetUnfolderBase]: For 116117/116117 co-relation queries the response was YES. [2024-10-14 14:34:23,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131495 conditions, 38058 events. 27255/38058 cut-off events. For 116117/116117 co-relation queries the response was YES. Maximal size of possible extension queue 1760. Compared 235397 event pairs, 4855 based on Foata normal form. 1/38055 useless extension candidates. Maximal degree in co-relation 111883. Up to 20061 conditions per place. [2024-10-14 14:34:23,227 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 131 selfloop transitions, 122 changer transitions 1/255 dead transitions. [2024-10-14 14:34:23,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 255 transitions, 2963 flow [2024-10-14 14:34:23,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:34:23,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 14:34:23,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-10-14 14:34:23,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-10-14 14:34:23,228 INFO L175 Difference]: Start difference. First operand has 116 places, 162 transitions, 1878 flow. Second operand 6 states and 128 transitions. [2024-10-14 14:34:23,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 255 transitions, 2963 flow [2024-10-14 14:34:24,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 255 transitions, 2901 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-10-14 14:34:24,020 INFO L231 Difference]: Finished difference. Result has 122 places, 192 transitions, 2538 flow [2024-10-14 14:34:24,020 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2538, PETRI_PLACES=122, PETRI_TRANSITIONS=192} [2024-10-14 14:34:24,020 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 85 predicate places. [2024-10-14 14:34:24,021 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 192 transitions, 2538 flow [2024-10-14 14:34:24,021 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) [2024-10-14 14:34:24,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:34:24,021 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] [2024-10-14 14:34:24,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 14:34:24,021 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:34:24,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:34:24,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1195890472, now seen corresponding path program 4 times [2024-10-14 14:34:24,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:34:24,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604056496] [2024-10-14 14:34:24,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:34:24,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:34:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:34:24,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:34:24,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:34:24,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604056496] [2024-10-14 14:34:24,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604056496] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:34:24,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:34:24,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:34:24,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399246591] [2024-10-14 14:34:24,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:34:24,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:34:24,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:34:24,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:34:24,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:34:24,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-14 14:34:24,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 192 transitions, 2538 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:24,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:34:24,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-14 14:34:24,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:34:28,379 INFO L124 PetriNetUnfolderBase]: 29533/41558 cut-off events. [2024-10-14 14:34:28,379 INFO L125 PetriNetUnfolderBase]: For 168362/168362 co-relation queries the response was YES. [2024-10-14 14:34:28,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151802 conditions, 41558 events. 29533/41558 cut-off events. For 168362/168362 co-relation queries the response was YES. Maximal size of possible extension queue 1898. Compared 261907 event pairs, 4763 based on Foata normal form. 1/41555 useless extension candidates. Maximal degree in co-relation 127118. Up to 16230 conditions per place. [2024-10-14 14:34:28,657 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 242 selfloop transitions, 63 changer transitions 1/307 dead transitions. [2024-10-14 14:34:28,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 307 transitions, 4299 flow [2024-10-14 14:34:28,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:34:28,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 14:34:28,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-10-14 14:34:28,658 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-10-14 14:34:28,658 INFO L175 Difference]: Start difference. First operand has 122 places, 192 transitions, 2538 flow. Second operand 6 states and 126 transitions. [2024-10-14 14:34:28,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 307 transitions, 4299 flow [2024-10-14 14:34:29,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 307 transitions, 4237 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-10-14 14:34:29,595 INFO L231 Difference]: Finished difference. Result has 128 places, 211 transitions, 3015 flow [2024-10-14 14:34:29,595 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2482, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3015, PETRI_PLACES=128, PETRI_TRANSITIONS=211} [2024-10-14 14:34:29,596 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 91 predicate places. [2024-10-14 14:34:29,596 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 211 transitions, 3015 flow [2024-10-14 14:34:29,596 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) [2024-10-14 14:34:29,596 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:34:29,596 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] [2024-10-14 14:34:29,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 14:34:29,597 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:34:29,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:34:29,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1671834696, now seen corresponding path program 5 times [2024-10-14 14:34:29,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:34:29,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750392764] [2024-10-14 14:34:29,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:34:29,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:34:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:34:29,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:34:29,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:34:29,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750392764] [2024-10-14 14:34:29,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750392764] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:34:29,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:34:29,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:34:29,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804326143] [2024-10-14 14:34:29,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:34:29,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:34:29,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:34:29,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:34:29,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:34:29,687 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-14 14:34:29,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 211 transitions, 3015 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:29,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:34:29,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-14 14:34:29,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:34:34,446 INFO L124 PetriNetUnfolderBase]: 29533/41556 cut-off events. [2024-10-14 14:34:34,447 INFO L125 PetriNetUnfolderBase]: For 208346/208346 co-relation queries the response was YES. [2024-10-14 14:34:34,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159761 conditions, 41556 events. 29533/41556 cut-off events. For 208346/208346 co-relation queries the response was YES. Maximal size of possible extension queue 1897. Compared 264944 event pairs, 3993 based on Foata normal form. 1/41553 useless extension candidates. Maximal degree in co-relation 141474. Up to 17893 conditions per place. [2024-10-14 14:34:34,825 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 155 selfloop transitions, 139 changer transitions 1/296 dead transitions. [2024-10-14 14:34:34,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 296 transitions, 4226 flow [2024-10-14 14:34:34,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:34:34,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 14:34:34,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-10-14 14:34:34,826 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-14 14:34:34,826 INFO L175 Difference]: Start difference. First operand has 128 places, 211 transitions, 3015 flow. Second operand 6 states and 130 transitions. [2024-10-14 14:34:34,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 296 transitions, 4226 flow [2024-10-14 14:34:36,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 296 transitions, 4158 flow, removed 29 selfloop flow, removed 1 redundant places. [2024-10-14 14:34:36,102 INFO L231 Difference]: Finished difference. Result has 135 places, 229 transitions, 3678 flow [2024-10-14 14:34:36,103 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2955, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3678, PETRI_PLACES=135, PETRI_TRANSITIONS=229} [2024-10-14 14:34:36,103 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 98 predicate places. [2024-10-14 14:34:36,103 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 229 transitions, 3678 flow [2024-10-14 14:34:36,103 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) [2024-10-14 14:34:36,104 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:34:36,104 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] [2024-10-14 14:34:36,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-14 14:34:36,104 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:34:36,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:34:36,104 INFO L85 PathProgramCache]: Analyzing trace with hash -733274142, now seen corresponding path program 6 times [2024-10-14 14:34:36,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:34:36,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866142006] [2024-10-14 14:34:36,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:34:36,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:34:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:34:36,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:34:36,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:34:36,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866142006] [2024-10-14 14:34:36,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866142006] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:34:36,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:34:36,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:34:36,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918079571] [2024-10-14 14:34:36,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:34:36,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:34:36,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:34:36,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:34:36,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:34:36,208 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-14 14:34:36,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 229 transitions, 3678 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:36,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:34:36,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-14 14:34:36,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:34:41,260 INFO L124 PetriNetUnfolderBase]: 29533/41554 cut-off events. [2024-10-14 14:34:41,260 INFO L125 PetriNetUnfolderBase]: For 252874/252874 co-relation queries the response was YES. [2024-10-14 14:34:41,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166218 conditions, 41554 events. 29533/41554 cut-off events. For 252874/252874 co-relation queries the response was YES. Maximal size of possible extension queue 1898. Compared 262476 event pairs, 5189 based on Foata normal form. 1/41551 useless extension candidates. Maximal degree in co-relation 149543. Up to 16074 conditions per place. [2024-10-14 14:34:41,618 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 211 selfloop transitions, 110 changer transitions 1/323 dead transitions. [2024-10-14 14:34:41,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 323 transitions, 5243 flow [2024-10-14 14:34:41,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:34:41,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 14:34:41,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-10-14 14:34:41,619 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-10-14 14:34:41,619 INFO L175 Difference]: Start difference. First operand has 135 places, 229 transitions, 3678 flow. Second operand 6 states and 126 transitions. [2024-10-14 14:34:41,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 323 transitions, 5243 flow [2024-10-14 14:34:43,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 323 transitions, 5029 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-10-14 14:34:43,029 INFO L231 Difference]: Finished difference. Result has 141 places, 264 transitions, 4592 flow [2024-10-14 14:34:43,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3505, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4592, PETRI_PLACES=141, PETRI_TRANSITIONS=264} [2024-10-14 14:34:43,030 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 104 predicate places. [2024-10-14 14:34:43,030 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 264 transitions, 4592 flow [2024-10-14 14:34:43,030 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) [2024-10-14 14:34:43,030 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:34:43,030 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] [2024-10-14 14:34:43,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-14 14:34:43,031 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:34:43,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:34:43,031 INFO L85 PathProgramCache]: Analyzing trace with hash -376576011, now seen corresponding path program 1 times [2024-10-14 14:34:43,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:34:43,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210761191] [2024-10-14 14:34:43,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:34:43,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:34:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:34:43,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:34:43,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:34:43,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210761191] [2024-10-14 14:34:43,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210761191] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:34:43,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292635942] [2024-10-14 14:34:43,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:34:43,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:34:43,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:34:43,179 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) [2024-10-14 14:34:43,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 14:34:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:34:43,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 14:34:43,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:34:43,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:34:43,392 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:34:43,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:34:43,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292635942] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:34:43,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:34:43,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-14 14:34:43,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389141351] [2024-10-14 14:34:43,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:34:43,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 14:34:43,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:34:43,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 14:34:43,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-10-14 14:34:43,505 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-14 14:34:43,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 264 transitions, 4592 flow. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:34:43,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:34:43,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-14 14:34:43,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand