./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/weaver/chl-array-int-subst.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 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:18:41,361 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:18:41,437 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:18:41,442 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:18:41,444 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:18:41,477 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:18:41,480 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:18:41,481 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:18:41,481 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:18:41,483 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:18:41,483 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:18:41,483 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:18:41,484 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:18:41,484 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:18:41,487 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:18:41,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:18:41,488 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:18:41,488 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:18:41,488 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:18:41,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:18:41,489 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:18:41,490 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:18:41,490 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:18:41,494 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:18:41,495 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:18:41,495 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:18:41,495 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:18:41,495 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:18:41,496 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:18:41,496 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:18:41,496 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:18:41,496 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:18:41,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:18:41,497 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:18:41,497 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:18:41,497 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:18:41,498 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:18:41,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:18:41,498 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:18:41,500 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:18:41,500 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:18:41,501 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:18:41,501 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 [2024-11-12 08:18:41,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:18:41,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:18:41,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:18:41,829 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:18:41,829 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:18:41,830 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2024-11-12 08:18:43,352 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:18:43,604 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:18:43,605 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2024-11-12 08:18:43,619 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78f0d52f0/f738dcd283244da981315407fc3ded37/FLAG24eb0af1c [2024-11-12 08:18:43,636 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78f0d52f0/f738dcd283244da981315407fc3ded37 [2024-11-12 08:18:43,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:18:43,640 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:18:43,642 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:18:43,642 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:18:43,647 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:18:43,648 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:18:43" (1/1) ... [2024-11-12 08:18:43,649 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@535a6750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:18:43, skipping insertion in model container [2024-11-12 08:18:43,649 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:18:43" (1/1) ... [2024-11-12 08:18:43,679 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:18:43,929 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c[2820,2833] [2024-11-12 08:18:43,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:18:43,966 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:18:43,996 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c[2820,2833] [2024-11-12 08:18:44,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:18:44,018 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:18:44,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:18:44 WrapperNode [2024-11-12 08:18:44,019 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:18:44,020 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:18:44,020 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:18:44,020 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:18:44,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:18:44" (1/1) ... [2024-11-12 08:18:44,039 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:18:44" (1/1) ... [2024-11-12 08:18:44,084 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 274 [2024-11-12 08:18:44,085 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:18:44,086 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:18:44,086 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:18:44,086 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:18:44,097 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:18:44" (1/1) ... [2024-11-12 08:18:44,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:18:44" (1/1) ... [2024-11-12 08:18:44,105 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:18:44" (1/1) ... [2024-11-12 08:18:44,138 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-12 08:18:44,139 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:18:44" (1/1) ... [2024-11-12 08:18:44,139 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:18:44" (1/1) ... [2024-11-12 08:18:44,147 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:18:44" (1/1) ... [2024-11-12 08:18:44,152 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:18:44" (1/1) ... [2024-11-12 08:18:44,154 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:18:44" (1/1) ... [2024-11-12 08:18:44,156 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:18:44" (1/1) ... [2024-11-12 08:18:44,160 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:18:44,161 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:18:44,161 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:18:44,161 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:18:44,162 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:18:44" (1/1) ... [2024-11-12 08:18:44,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:18:44,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:18:44,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 08:18:44,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 08:18:44,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:18:44,243 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 08:18:44,244 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 08:18:44,244 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 08:18:44,244 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 08:18:44,245 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 08:18:44,245 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 08:18:44,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:18:44,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 08:18:44,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 08:18:44,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 08:18:44,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 08:18:44,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:18:44,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:18:44,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 08:18:44,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 08:18:44,249 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 08:18:44,366 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:18:44,369 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:18:44,850 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:18:44,851 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:18:45,283 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:18:45,284 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-12 08:18:45,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:18:45 BoogieIcfgContainer [2024-11-12 08:18:45,284 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:18:45,287 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:18:45,288 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:18:45,291 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:18:45,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:18:43" (1/3) ... [2024-11-12 08:18:45,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52658b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:18:45, skipping insertion in model container [2024-11-12 08:18:45,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:18:44" (2/3) ... [2024-11-12 08:18:45,294 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52658b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:18:45, skipping insertion in model container [2024-11-12 08:18:45,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:18:45" (3/3) ... [2024-11-12 08:18:45,296 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2024-11-12 08:18:45,325 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:18:45,326 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 08:18:45,326 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:18:45,390 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-12 08:18:45,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 40 transitions, 101 flow [2024-11-12 08:18:45,468 INFO L124 PetriNetUnfolderBase]: 9/37 cut-off events. [2024-11-12 08:18:45,469 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 08:18:45,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 37 events. 9/37 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-12 08:18:45,474 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 40 transitions, 101 flow [2024-11-12 08:18:45,478 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 36 transitions, 90 flow [2024-11-12 08:18:45,490 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:18:45,499 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;@7eb45895, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:18:45,500 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-12 08:18:45,518 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:18:45,519 INFO L124 PetriNetUnfolderBase]: 9/35 cut-off events. [2024-11-12 08:18:45,519 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 08:18:45,519 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:18:45,520 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:18:45,521 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:18:45,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:18:45,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1313884014, now seen corresponding path program 1 times [2024-11-12 08:18:45,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:18:45,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914039526] [2024-11-12 08:18:45,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:18:45,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:18:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:18:46,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:46,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:18:46,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914039526] [2024-11-12 08:18:46,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914039526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:18:46,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:18:46,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 08:18:46,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747288355] [2024-11-12 08:18:46,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:18:46,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 08:18:46,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:18:46,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 08:18:46,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-12 08:18:46,641 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:18:46,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 90 flow. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:18:46,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:18:46,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:18:46,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:18:47,678 INFO L124 PetriNetUnfolderBase]: 2768/3758 cut-off events. [2024-11-12 08:18:47,678 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2024-11-12 08:18:47,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7738 conditions, 3758 events. 2768/3758 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 14868 event pairs, 244 based on Foata normal form. 1/2695 useless extension candidates. Maximal degree in co-relation 4518. Up to 1254 conditions per place. [2024-11-12 08:18:47,711 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 114 selfloop transitions, 16 changer transitions 1/132 dead transitions. [2024-11-12 08:18:47,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 132 transitions, 592 flow [2024-11-12 08:18:47,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 08:18:47,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 08:18:47,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-11-12 08:18:47,728 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-11-12 08:18:47,730 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 90 flow. Second operand 10 states and 172 transitions. [2024-11-12 08:18:47,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 132 transitions, 592 flow [2024-11-12 08:18:47,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 132 transitions, 548 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-12 08:18:47,747 INFO L231 Difference]: Finished difference. Result has 44 places, 52 transitions, 178 flow [2024-11-12 08:18:47,750 INFO L262 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=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=178, PETRI_PLACES=44, PETRI_TRANSITIONS=52} [2024-11-12 08:18:47,753 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2024-11-12 08:18:47,755 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 52 transitions, 178 flow [2024-11-12 08:18:47,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:18:47,756 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:18:47,756 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:18:47,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:18:47,757 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:18:47,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:18:47,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1734295646, now seen corresponding path program 2 times [2024-11-12 08:18:47,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:18:47,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508822560] [2024-11-12 08:18:47,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:18:47,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:18:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:18:48,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:48,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:18:48,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508822560] [2024-11-12 08:18:48,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508822560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:18:48,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:18:48,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 08:18:48,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242355382] [2024-11-12 08:18:48,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:18:48,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 08:18:48,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:18:48,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 08:18:48,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-12 08:18:48,316 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:18:48,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 52 transitions, 178 flow. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:18:48,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:18:48,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:18:48,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:18:49,161 INFO L124 PetriNetUnfolderBase]: 3138/4313 cut-off events. [2024-11-12 08:18:49,161 INFO L125 PetriNetUnfolderBase]: For 540/540 co-relation queries the response was YES. [2024-11-12 08:18:49,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9476 conditions, 4313 events. 3138/4313 cut-off events. For 540/540 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 18237 event pairs, 304 based on Foata normal form. 1/3518 useless extension candidates. Maximal degree in co-relation 6533. Up to 1352 conditions per place. [2024-11-12 08:18:49,188 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 116 selfloop transitions, 18 changer transitions 1/136 dead transitions. [2024-11-12 08:18:49,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 136 transitions, 645 flow [2024-11-12 08:18:49,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 08:18:49,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 08:18:49,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-11-12 08:18:49,193 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.435 [2024-11-12 08:18:49,193 INFO L175 Difference]: Start difference. First operand has 44 places, 52 transitions, 178 flow. Second operand 10 states and 174 transitions. [2024-11-12 08:18:49,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 136 transitions, 645 flow [2024-11-12 08:18:49,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 136 transitions, 639 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-12 08:18:49,200 INFO L231 Difference]: Finished difference. Result has 55 places, 56 transitions, 242 flow [2024-11-12 08:18:49,200 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=242, PETRI_PLACES=55, PETRI_TRANSITIONS=56} [2024-11-12 08:18:49,201 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2024-11-12 08:18:49,203 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 56 transitions, 242 flow [2024-11-12 08:18:49,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:18:49,204 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:18:49,204 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:18:49,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 08:18:49,205 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:18:49,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:18:49,205 INFO L85 PathProgramCache]: Analyzing trace with hash 875880000, now seen corresponding path program 1 times [2024-11-12 08:18:49,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:18:49,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772980095] [2024-11-12 08:18:49,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:18:49,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:18:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:18:49,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:49,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:18:49,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772980095] [2024-11-12 08:18:49,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772980095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:18:49,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760496735] [2024-11-12 08:18:49,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:18:49,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:18:49,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:18:49,382 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:18:49,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 08:18:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:18:49,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 08:18:49,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:18:49,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:49,621 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:18:49,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:49,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760496735] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:18:49,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:18:49,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2024-11-12 08:18:49,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447685748] [2024-11-12 08:18:49,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:18:49,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:18:49,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:18:49,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:18:49,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-12 08:18:49,725 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:18:49,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 56 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:18:49,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:18:49,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:18:49,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:18:50,612 INFO L124 PetriNetUnfolderBase]: 5430/7452 cut-off events. [2024-11-12 08:18:50,612 INFO L125 PetriNetUnfolderBase]: For 2751/2751 co-relation queries the response was YES. [2024-11-12 08:18:50,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17374 conditions, 7452 events. 5430/7452 cut-off events. For 2751/2751 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 33951 event pairs, 2892 based on Foata normal form. 1/6109 useless extension candidates. Maximal degree in co-relation 14138. Up to 4306 conditions per place. [2024-11-12 08:18:50,659 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 133 selfloop transitions, 8 changer transitions 5/147 dead transitions. [2024-11-12 08:18:50,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 147 transitions, 811 flow [2024-11-12 08:18:50,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 08:18:50,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 08:18:50,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-11-12 08:18:50,662 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5392857142857143 [2024-11-12 08:18:50,662 INFO L175 Difference]: Start difference. First operand has 55 places, 56 transitions, 242 flow. Second operand 7 states and 151 transitions. [2024-11-12 08:18:50,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 147 transitions, 811 flow [2024-11-12 08:18:50,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 147 transitions, 786 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-12 08:18:50,682 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 269 flow [2024-11-12 08:18:50,683 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=269, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2024-11-12 08:18:50,683 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 22 predicate places. [2024-11-12 08:18:50,684 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 269 flow [2024-11-12 08:18:50,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:18:50,684 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:18:50,684 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:18:50,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-12 08:18:50,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:18:50,886 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:18:50,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:18:50,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1686032846, now seen corresponding path program 1 times [2024-11-12 08:18:50,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:18:50,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393429620] [2024-11-12 08:18:50,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:18:50,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:18:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:18:51,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:51,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:18:51,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393429620] [2024-11-12 08:18:51,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393429620] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:18:51,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724235840] [2024-11-12 08:18:51,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:18:51,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:18:51,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:18:51,029 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:18:51,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 08:18:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:18:51,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 08:18:51,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:18:51,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:51,239 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:18:51,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:51,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724235840] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:18:51,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:18:51,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-11-12 08:18:51,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306185966] [2024-11-12 08:18:51,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:18:51,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 08:18:51,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:18:51,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 08:18:51,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-12 08:18:51,386 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:18:51,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 269 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:18:51,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:18:51,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:18:51,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:18:52,498 INFO L124 PetriNetUnfolderBase]: 6746/9268 cut-off events. [2024-11-12 08:18:52,499 INFO L125 PetriNetUnfolderBase]: For 3841/3841 co-relation queries the response was YES. [2024-11-12 08:18:52,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22428 conditions, 9268 events. 6746/9268 cut-off events. For 3841/3841 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 43798 event pairs, 3730 based on Foata normal form. 1/8020 useless extension candidates. Maximal degree in co-relation 19100. Up to 4460 conditions per place. [2024-11-12 08:18:52,572 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 127 selfloop transitions, 8 changer transitions 5/141 dead transitions. [2024-11-12 08:18:52,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 141 transitions, 792 flow [2024-11-12 08:18:52,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:18:52,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:18:52,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-11-12 08:18:52,576 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-11-12 08:18:52,577 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 269 flow. Second operand 6 states and 147 transitions. [2024-11-12 08:18:52,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 141 transitions, 792 flow [2024-11-12 08:18:52,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 141 transitions, 781 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-12 08:18:52,596 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 293 flow [2024-11-12 08:18:52,596 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=293, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-11-12 08:18:52,597 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 27 predicate places. [2024-11-12 08:18:52,598 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 293 flow [2024-11-12 08:18:52,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:18:52,599 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:18:52,599 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:18:52,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-12 08:18:52,799 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,SelfDestructingSolverStorable3 [2024-11-12 08:18:52,800 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:18:52,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:18:52,801 INFO L85 PathProgramCache]: Analyzing trace with hash 862633564, now seen corresponding path program 1 times [2024-11-12 08:18:52,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:18:52,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316349025] [2024-11-12 08:18:52,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:18:52,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:18:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:18:52,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:52,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:18:52,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316349025] [2024-11-12 08:18:52,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316349025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:18:52,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:18:52,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:18:52,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924052530] [2024-11-12 08:18:52,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:18:52,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:18:52,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:18:52,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:18:52,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:18:52,938 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:18:52,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 293 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:18:52,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:18:52,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:18:52,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:18:53,636 INFO L124 PetriNetUnfolderBase]: 5027/7072 cut-off events. [2024-11-12 08:18:53,638 INFO L125 PetriNetUnfolderBase]: For 4094/4094 co-relation queries the response was YES. [2024-11-12 08:18:53,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17512 conditions, 7072 events. 5027/7072 cut-off events. For 4094/4094 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 33632 event pairs, 2062 based on Foata normal form. 0/6265 useless extension candidates. Maximal degree in co-relation 15527. Up to 3198 conditions per place. [2024-11-12 08:18:53,673 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 97 selfloop transitions, 8 changer transitions 0/106 dead transitions. [2024-11-12 08:18:53,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 106 transitions, 643 flow [2024-11-12 08:18:53,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:18:53,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:18:53,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-11-12 08:18:53,675 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-11-12 08:18:53,675 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 293 flow. Second operand 5 states and 103 transitions. [2024-11-12 08:18:53,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 106 transitions, 643 flow [2024-11-12 08:18:53,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 106 transitions, 610 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-12 08:18:53,687 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 281 flow [2024-11-12 08:18:53,688 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-11-12 08:18:53,690 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 28 predicate places. [2024-11-12 08:18:53,690 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 281 flow [2024-11-12 08:18:53,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:18:53,691 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:18:53,691 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:18:53,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 08:18:53,691 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:18:53,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:18:53,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1986635036, now seen corresponding path program 1 times [2024-11-12 08:18:53,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:18:53,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717589964] [2024-11-12 08:18:53,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:18:53,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:18:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:18:53,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:53,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:18:53,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717589964] [2024-11-12 08:18:53,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717589964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:18:53,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:18:53,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 08:18:53,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956987771] [2024-11-12 08:18:53,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:18:53,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:18:53,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:18:53,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:18:53,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:18:53,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:18:53,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 281 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:18:53,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:18:53,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:18:53,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:18:54,458 INFO L124 PetriNetUnfolderBase]: 3947/5694 cut-off events. [2024-11-12 08:18:54,458 INFO L125 PetriNetUnfolderBase]: For 3925/3925 co-relation queries the response was YES. [2024-11-12 08:18:54,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14231 conditions, 5694 events. 3947/5694 cut-off events. For 3925/3925 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 27139 event pairs, 1725 based on Foata normal form. 0/5156 useless extension candidates. Maximal degree in co-relation 13379. Up to 2622 conditions per place. [2024-11-12 08:18:54,497 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 88 selfloop transitions, 11 changer transitions 5/105 dead transitions. [2024-11-12 08:18:54,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 105 transitions, 635 flow [2024-11-12 08:18:54,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:18:54,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:18:54,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-11-12 08:18:54,499 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-11-12 08:18:54,499 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 281 flow. Second operand 6 states and 106 transitions. [2024-11-12 08:18:54,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 105 transitions, 635 flow [2024-11-12 08:18:54,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 105 transitions, 624 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 08:18:54,509 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 271 flow [2024-11-12 08:18:54,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-11-12 08:18:54,510 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 32 predicate places. [2024-11-12 08:18:54,510 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 271 flow [2024-11-12 08:18:54,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:18:54,511 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:18:54,512 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:18:54,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 08:18:54,512 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:18:54,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:18:54,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1157327458, now seen corresponding path program 1 times [2024-11-12 08:18:54,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:18:54,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830571162] [2024-11-12 08:18:54,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:18:54,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:18:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:18:54,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:54,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:18:54,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830571162] [2024-11-12 08:18:54,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830571162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:18:54,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006350492] [2024-11-12 08:18:54,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:18:54,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:18:54,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:18:54,860 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) [2024-11-12 08:18:54,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 08:18:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:18:54,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-12 08:18:54,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:18:55,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:55,202 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:18:55,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:55,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006350492] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:18:55,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:18:55,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2024-11-12 08:18:55,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156184481] [2024-11-12 08:18:55,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:18:55,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 08:18:55,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:18:55,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 08:18:55,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-12 08:18:55,563 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:18:55,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 271 flow. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:18:55,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:18:55,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:18:55,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:18:56,241 INFO L124 PetriNetUnfolderBase]: 3477/4992 cut-off events. [2024-11-12 08:18:56,242 INFO L125 PetriNetUnfolderBase]: For 3685/3685 co-relation queries the response was YES. [2024-11-12 08:18:56,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12844 conditions, 4992 events. 3477/4992 cut-off events. For 3685/3685 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 23590 event pairs, 522 based on Foata normal form. 1/4619 useless extension candidates. Maximal degree in co-relation 12797. Up to 3740 conditions per place. [2024-11-12 08:18:56,283 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 98 selfloop transitions, 12 changer transitions 18/129 dead transitions. [2024-11-12 08:18:56,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 129 transitions, 785 flow [2024-11-12 08:18:56,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 08:18:56,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 08:18:56,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-11-12 08:18:56,285 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3825 [2024-11-12 08:18:56,285 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 271 flow. Second operand 10 states and 153 transitions. [2024-11-12 08:18:56,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 129 transitions, 785 flow [2024-11-12 08:18:56,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 129 transitions, 757 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-12 08:18:56,295 INFO L231 Difference]: Finished difference. Result has 72 places, 57 transitions, 300 flow [2024-11-12 08:18:56,296 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=300, PETRI_PLACES=72, PETRI_TRANSITIONS=57} [2024-11-12 08:18:56,296 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 35 predicate places. [2024-11-12 08:18:56,296 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 300 flow [2024-11-12 08:18:56,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:18:56,297 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:18:56,297 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:18:56,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 08:18:56,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:18:56,499 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:18:56,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:18:56,500 INFO L85 PathProgramCache]: Analyzing trace with hash -254538266, now seen corresponding path program 2 times [2024-11-12 08:18:56,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:18:56,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577613752] [2024-11-12 08:18:56,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:18:56,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:18:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:18:56,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:56,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:18:56,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577613752] [2024-11-12 08:18:56,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577613752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:18:56,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913277630] [2024-11-12 08:18:56,854 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:18:56,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:18:56,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:18:56,856 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:18:56,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 08:18:56,959 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 08:18:56,959 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:18:56,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-12 08:18:56,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:18:57,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:18:57,255 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 08:18:57,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913277630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:18:57,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 08:18:57,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2024-11-12 08:18:57,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407789279] [2024-11-12 08:18:57,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:18:57,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 08:18:57,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:18:57,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 08:18:57,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-12 08:18:57,261 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:18:57,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 57 transitions, 300 flow. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:18:57,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:18:57,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:18:57,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:18:57,889 INFO L124 PetriNetUnfolderBase]: 3449/4988 cut-off events. [2024-11-12 08:18:57,889 INFO L125 PetriNetUnfolderBase]: For 5195/5195 co-relation queries the response was YES. [2024-11-12 08:18:57,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13141 conditions, 4988 events. 3449/4988 cut-off events. For 5195/5195 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 23788 event pairs, 1220 based on Foata normal form. 1/4622 useless extension candidates. Maximal degree in co-relation 13091. Up to 3945 conditions per place. [2024-11-12 08:18:57,915 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 107 selfloop transitions, 21 changer transitions 8/137 dead transitions. [2024-11-12 08:18:57,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 137 transitions, 865 flow [2024-11-12 08:18:57,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 08:18:57,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 08:18:57,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-11-12 08:18:57,918 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3704545454545455 [2024-11-12 08:18:57,918 INFO L175 Difference]: Start difference. First operand has 72 places, 57 transitions, 300 flow. Second operand 11 states and 163 transitions. [2024-11-12 08:18:57,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 137 transitions, 865 flow [2024-11-12 08:18:57,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 137 transitions, 817 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-11-12 08:18:57,936 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 455 flow [2024-11-12 08:18:57,936 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=455, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2024-11-12 08:18:57,937 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 40 predicate places. [2024-11-12 08:18:57,937 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 455 flow [2024-11-12 08:18:57,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:18:57,937 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:18:57,938 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:18:57,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-12 08:18:58,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:18:58,138 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:18:58,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:18:58,139 INFO L85 PathProgramCache]: Analyzing trace with hash 276219648, now seen corresponding path program 3 times [2024-11-12 08:18:58,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:18:58,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386049899] [2024-11-12 08:18:58,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:18:58,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:18:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:18:58,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:58,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:18:58,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386049899] [2024-11-12 08:18:58,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386049899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:18:58,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816504901] [2024-11-12 08:18:58,395 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:18:58,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:18:58,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:18:58,398 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:18:58,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 08:18:58,491 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-12 08:18:58,492 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:18:58,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-12 08:18:58,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:18:58,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:18:58,678 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 08:18:58,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816504901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:18:58,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 08:18:58,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2024-11-12 08:18:58,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027714971] [2024-11-12 08:18:58,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:18:58,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:18:58,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:18:58,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:18:58,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-12 08:18:58,680 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:18:58,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 455 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:18:58,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:18:58,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:18:58,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:18:59,353 INFO L124 PetriNetUnfolderBase]: 4350/6288 cut-off events. [2024-11-12 08:18:59,353 INFO L125 PetriNetUnfolderBase]: For 5929/5929 co-relation queries the response was YES. [2024-11-12 08:18:59,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16388 conditions, 6288 events. 4350/6288 cut-off events. For 5929/5929 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 31519 event pairs, 828 based on Foata normal form. 1/5781 useless extension candidates. Maximal degree in co-relation 15545. Up to 2597 conditions per place. [2024-11-12 08:18:59,385 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 120 selfloop transitions, 33 changer transitions 6/160 dead transitions. [2024-11-12 08:18:59,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 160 transitions, 1056 flow [2024-11-12 08:18:59,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 08:18:59,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 08:18:59,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-11-12 08:18:59,387 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-11-12 08:18:59,387 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 455 flow. Second operand 10 states and 172 transitions. [2024-11-12 08:18:59,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 160 transitions, 1056 flow [2024-11-12 08:18:59,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 160 transitions, 1028 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-11-12 08:18:59,399 INFO L231 Difference]: Finished difference. Result has 86 places, 80 transitions, 582 flow [2024-11-12 08:18:59,399 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=582, PETRI_PLACES=86, PETRI_TRANSITIONS=80} [2024-11-12 08:18:59,400 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 49 predicate places. [2024-11-12 08:18:59,400 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 80 transitions, 582 flow [2024-11-12 08:18:59,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:18:59,401 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:18:59,401 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:18:59,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 08:18:59,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:18:59,602 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:18:59,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:18:59,602 INFO L85 PathProgramCache]: Analyzing trace with hash -620935228, now seen corresponding path program 4 times [2024-11-12 08:18:59,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:18:59,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505249104] [2024-11-12 08:18:59,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:18:59,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:18:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:18:59,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:59,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:18:59,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505249104] [2024-11-12 08:18:59,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505249104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:18:59,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812476251] [2024-11-12 08:18:59,838 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 08:18:59,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:18:59,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:18:59,841 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:18:59,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 08:18:59,928 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 08:18:59,928 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:18:59,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 08:18:59,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:18:59,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:18:59,982 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 08:18:59,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812476251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:18:59,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 08:18:59,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2024-11-12 08:18:59,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197577346] [2024-11-12 08:18:59,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:18:59,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:18:59,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:18:59,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:18:59,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-12 08:18:59,984 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:18:59,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 582 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:18:59,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:18:59,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:18:59,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:19:00,919 INFO L124 PetriNetUnfolderBase]: 7151/10187 cut-off events. [2024-11-12 08:19:00,920 INFO L125 PetriNetUnfolderBase]: For 12300/12300 co-relation queries the response was YES. [2024-11-12 08:19:00,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27275 conditions, 10187 events. 7151/10187 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 54001 event pairs, 740 based on Foata normal form. 2/9681 useless extension candidates. Maximal degree in co-relation 26390. Up to 4031 conditions per place. [2024-11-12 08:19:00,980 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 114 selfloop transitions, 42 changer transitions 1/158 dead transitions. [2024-11-12 08:19:00,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 158 transitions, 1242 flow [2024-11-12 08:19:00,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:19:00,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:19:00,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-11-12 08:19:00,982 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-12 08:19:00,982 INFO L175 Difference]: Start difference. First operand has 86 places, 80 transitions, 582 flow. Second operand 6 states and 126 transitions. [2024-11-12 08:19:00,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 158 transitions, 1242 flow [2024-11-12 08:19:01,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 158 transitions, 1190 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-11-12 08:19:01,013 INFO L231 Difference]: Finished difference. Result has 90 places, 99 transitions, 857 flow [2024-11-12 08:19:01,013 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=857, PETRI_PLACES=90, PETRI_TRANSITIONS=99} [2024-11-12 08:19:01,014 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 53 predicate places. [2024-11-12 08:19:01,014 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 99 transitions, 857 flow [2024-11-12 08:19:01,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:01,014 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:19:01,014 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:19:01,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 08:19:01,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:19:01,215 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:19:01,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:19:01,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1411683354, now seen corresponding path program 1 times [2024-11-12 08:19:01,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:19:01,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773916139] [2024-11-12 08:19:01,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:19:01,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:19:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:19:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:19:01,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:19:01,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773916139] [2024-11-12 08:19:01,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773916139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:19:01,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:19:01,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:19:01,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072216720] [2024-11-12 08:19:01,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:19:01,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:19:01,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:19:01,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:19:01,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:19:01,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:19:01,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 99 transitions, 857 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:01,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:19:01,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:19:01,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:19:02,121 INFO L124 PetriNetUnfolderBase]: 5982/8573 cut-off events. [2024-11-12 08:19:02,121 INFO L125 PetriNetUnfolderBase]: For 18717/18717 co-relation queries the response was YES. [2024-11-12 08:19:02,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25216 conditions, 8573 events. 5982/8573 cut-off events. For 18717/18717 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 45135 event pairs, 3475 based on Foata normal form. 0/8258 useless extension candidates. Maximal degree in co-relation 24614. Up to 6344 conditions per place. [2024-11-12 08:19:02,178 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 67 selfloop transitions, 2 changer transitions 62/132 dead transitions. [2024-11-12 08:19:02,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 132 transitions, 1198 flow [2024-11-12 08:19:02,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:19:02,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:19:02,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-11-12 08:19:02,179 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-11-12 08:19:02,179 INFO L175 Difference]: Start difference. First operand has 90 places, 99 transitions, 857 flow. Second operand 6 states and 105 transitions. [2024-11-12 08:19:02,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 132 transitions, 1198 flow [2024-11-12 08:19:02,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 132 transitions, 1152 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-11-12 08:19:02,239 INFO L231 Difference]: Finished difference. Result has 97 places, 70 transitions, 506 flow [2024-11-12 08:19:02,239 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=506, PETRI_PLACES=97, PETRI_TRANSITIONS=70} [2024-11-12 08:19:02,240 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 60 predicate places. [2024-11-12 08:19:02,240 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 70 transitions, 506 flow [2024-11-12 08:19:02,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:02,240 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:19:02,241 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:19:02,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 08:19:02,241 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:19:02,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:19:02,242 INFO L85 PathProgramCache]: Analyzing trace with hash -341278882, now seen corresponding path program 1 times [2024-11-12 08:19:02,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:19:02,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709528266] [2024-11-12 08:19:02,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:19:02,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:19:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:19:02,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:19:02,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:19:02,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709528266] [2024-11-12 08:19:02,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709528266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:19:02,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:19:02,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 08:19:02,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377999504] [2024-11-12 08:19:02,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:19:02,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:19:02,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:19:02,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:19:02,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:19:02,319 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:19:02,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 70 transitions, 506 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:02,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:19:02,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:19:02,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:19:02,789 INFO L124 PetriNetUnfolderBase]: 3539/4972 cut-off events. [2024-11-12 08:19:02,789 INFO L125 PetriNetUnfolderBase]: For 8274/8274 co-relation queries the response was YES. [2024-11-12 08:19:02,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14291 conditions, 4972 events. 3539/4972 cut-off events. For 8274/8274 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 22961 event pairs, 1737 based on Foata normal form. 154/5124 useless extension candidates. Maximal degree in co-relation 14259. Up to 3059 conditions per place. [2024-11-12 08:19:02,814 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 47 selfloop transitions, 2 changer transitions 52/102 dead transitions. [2024-11-12 08:19:02,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 102 transitions, 795 flow [2024-11-12 08:19:02,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:19:02,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:19:02,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-11-12 08:19:02,816 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-11-12 08:19:02,816 INFO L175 Difference]: Start difference. First operand has 97 places, 70 transitions, 506 flow. Second operand 6 states and 101 transitions. [2024-11-12 08:19:02,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 102 transitions, 795 flow [2024-11-12 08:19:02,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 102 transitions, 729 flow, removed 31 selfloop flow, removed 12 redundant places. [2024-11-12 08:19:02,838 INFO L231 Difference]: Finished difference. Result has 74 places, 50 transitions, 247 flow [2024-11-12 08:19:02,838 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=247, PETRI_PLACES=74, PETRI_TRANSITIONS=50} [2024-11-12 08:19:02,839 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 37 predicate places. [2024-11-12 08:19:02,839 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 50 transitions, 247 flow [2024-11-12 08:19:02,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:02,839 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:19:02,839 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:19:02,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 08:19:02,840 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:19:02,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:19:02,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1081268092, now seen corresponding path program 1 times [2024-11-12 08:19:02,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:19:02,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403421256] [2024-11-12 08:19:02,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:19:02,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:19:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:19:02,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:19:02,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:19:02,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403421256] [2024-11-12 08:19:02,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403421256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:19:02,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29616080] [2024-11-12 08:19:02,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:19:02,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:19:02,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:19:02,964 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:19:02,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 08:19:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:19:03,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 08:19:03,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:19:03,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:19:03,147 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:19:03,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:19:03,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29616080] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:19:03,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:19:03,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2024-11-12 08:19:03,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729440529] [2024-11-12 08:19:03,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:19:03,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:19:03,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:19:03,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:19:03,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-12 08:19:03,227 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:19:03,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 50 transitions, 247 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:03,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:19:03,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:19:03,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:19:03,613 INFO L124 PetriNetUnfolderBase]: 3117/4283 cut-off events. [2024-11-12 08:19:03,613 INFO L125 PetriNetUnfolderBase]: For 4504/4504 co-relation queries the response was YES. [2024-11-12 08:19:03,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11713 conditions, 4283 events. 3117/4283 cut-off events. For 4504/4504 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 17894 event pairs, 1432 based on Foata normal form. 154/4205 useless extension candidates. Maximal degree in co-relation 11690. Up to 2238 conditions per place. [2024-11-12 08:19:03,636 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 69 selfloop transitions, 9 changer transitions 0/79 dead transitions. [2024-11-12 08:19:03,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 79 transitions, 531 flow [2024-11-12 08:19:03,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 08:19:03,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 08:19:03,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-11-12 08:19:03,637 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31785714285714284 [2024-11-12 08:19:03,637 INFO L175 Difference]: Start difference. First operand has 74 places, 50 transitions, 247 flow. Second operand 7 states and 89 transitions. [2024-11-12 08:19:03,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 79 transitions, 531 flow [2024-11-12 08:19:03,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 79 transitions, 475 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-11-12 08:19:03,653 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 248 flow [2024-11-12 08:19:03,654 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=248, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2024-11-12 08:19:03,654 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 22 predicate places. [2024-11-12 08:19:03,655 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 248 flow [2024-11-12 08:19:03,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:03,655 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:19:03,656 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:19:03,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-12 08:19:03,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:19:03,857 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:19:03,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:19:03,857 INFO L85 PathProgramCache]: Analyzing trace with hash -57540264, now seen corresponding path program 1 times [2024-11-12 08:19:03,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:19:03,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549585555] [2024-11-12 08:19:03,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:19:03,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:19:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:19:03,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 08:19:03,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:19:03,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549585555] [2024-11-12 08:19:03,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549585555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:19:03,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:19:03,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:19:03,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166228264] [2024-11-12 08:19:03,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:19:03,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:19:03,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:19:03,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:19:03,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:19:03,975 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:19:03,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:03,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:19:03,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:19:03,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:19:04,282 INFO L124 PetriNetUnfolderBase]: 3117/4279 cut-off events. [2024-11-12 08:19:04,282 INFO L125 PetriNetUnfolderBase]: For 3122/3122 co-relation queries the response was YES. [2024-11-12 08:19:04,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11541 conditions, 4279 events. 3117/4279 cut-off events. For 3122/3122 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 18360 event pairs, 1309 based on Foata normal form. 2/3856 useless extension candidates. Maximal degree in co-relation 11525. Up to 2752 conditions per place. [2024-11-12 08:19:04,299 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 67 selfloop transitions, 3 changer transitions 26/97 dead transitions. [2024-11-12 08:19:04,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 97 transitions, 607 flow [2024-11-12 08:19:04,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 08:19:04,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 08:19:04,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-11-12 08:19:04,300 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-12 08:19:04,300 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 248 flow. Second operand 4 states and 90 transitions. [2024-11-12 08:19:04,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 97 transitions, 607 flow [2024-11-12 08:19:04,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 97 transitions, 594 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-12 08:19:04,307 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 225 flow [2024-11-12 08:19:04,308 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2024-11-12 08:19:04,308 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 21 predicate places. [2024-11-12 08:19:04,309 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 225 flow [2024-11-12 08:19:04,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:04,309 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:19:04,309 INFO L206 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, 1] [2024-11-12 08:19:04,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-12 08:19:04,310 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:19:04,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:19:04,312 INFO L85 PathProgramCache]: Analyzing trace with hash -45934218, now seen corresponding path program 1 times [2024-11-12 08:19:04,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:19:04,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933397030] [2024-11-12 08:19:04,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:19:04,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:19:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:19:04,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 08:19:04,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:19:04,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933397030] [2024-11-12 08:19:04,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933397030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:19:04,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075301411] [2024-11-12 08:19:04,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:19:04,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:19:04,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:19:04,586 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:19:04,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 08:19:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:19:04,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:19:04,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:19:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 08:19:04,884 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:19:05,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 08:19:05,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075301411] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:19:05,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:19:05,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 19 [2024-11-12 08:19:05,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516301839] [2024-11-12 08:19:05,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:19:05,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:19:05,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:19:05,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:19:05,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-11-12 08:19:05,190 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:19:05,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 225 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:05,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:19:05,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:19:05,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:19:06,101 INFO L124 PetriNetUnfolderBase]: 6522/8968 cut-off events. [2024-11-12 08:19:06,102 INFO L125 PetriNetUnfolderBase]: For 8064/8064 co-relation queries the response was YES. [2024-11-12 08:19:06,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24462 conditions, 8968 events. 6522/8968 cut-off events. For 8064/8064 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 43507 event pairs, 1463 based on Foata normal form. 1/8029 useless extension candidates. Maximal degree in co-relation 24445. Up to 3471 conditions per place. [2024-11-12 08:19:06,152 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 132 selfloop transitions, 21 changer transitions 1/155 dead transitions. [2024-11-12 08:19:06,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 155 transitions, 934 flow [2024-11-12 08:19:06,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 08:19:06,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 08:19:06,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-11-12 08:19:06,154 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-12 08:19:06,154 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 225 flow. Second operand 11 states and 180 transitions. [2024-11-12 08:19:06,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 155 transitions, 934 flow [2024-11-12 08:19:06,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 155 transitions, 904 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-12 08:19:06,168 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 408 flow [2024-11-12 08:19:06,168 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=408, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-11-12 08:19:06,168 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 32 predicate places. [2024-11-12 08:19:06,169 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 408 flow [2024-11-12 08:19:06,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:06,169 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:19:06,169 INFO L206 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, 1] [2024-11-12 08:19:06,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-12 08:19:06,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-12 08:19:06,370 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:19:06,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:19:06,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1134680602, now seen corresponding path program 2 times [2024-11-12 08:19:06,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:19:06,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733490341] [2024-11-12 08:19:06,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:19:06,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:19:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:19:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 08:19:06,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:19:06,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733490341] [2024-11-12 08:19:06,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733490341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:19:06,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84963857] [2024-11-12 08:19:06,621 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:19:06,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:19:06,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:19:06,622 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:19:06,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 08:19:06,710 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 08:19:06,711 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:19:06,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-12 08:19:06,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:19:06,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:19:06,883 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 08:19:06,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84963857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:19:06,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 08:19:06,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2024-11-12 08:19:06,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821950861] [2024-11-12 08:19:06,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:19:06,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 08:19:06,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:19:06,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 08:19:06,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-12 08:19:06,886 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:19:06,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 408 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:06,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:19:06,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:19:06,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:19:07,625 INFO L124 PetriNetUnfolderBase]: 6522/8966 cut-off events. [2024-11-12 08:19:07,625 INFO L125 PetriNetUnfolderBase]: For 12064/12064 co-relation queries the response was YES. [2024-11-12 08:19:07,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25372 conditions, 8966 events. 6522/8966 cut-off events. For 12064/12064 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 43398 event pairs, 1563 based on Foata normal form. 1/8028 useless extension candidates. Maximal degree in co-relation 25351. Up to 3471 conditions per place. [2024-11-12 08:19:07,679 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 134 selfloop transitions, 20 changer transitions 1/156 dead transitions. [2024-11-12 08:19:07,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 156 transitions, 1045 flow [2024-11-12 08:19:07,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 08:19:07,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 08:19:07,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-11-12 08:19:07,681 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4325 [2024-11-12 08:19:07,681 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 408 flow. Second operand 10 states and 173 transitions. [2024-11-12 08:19:07,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 156 transitions, 1045 flow [2024-11-12 08:19:07,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 156 transitions, 1027 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-12 08:19:07,699 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 517 flow [2024-11-12 08:19:07,699 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=517, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2024-11-12 08:19:07,699 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 41 predicate places. [2024-11-12 08:19:07,700 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 517 flow [2024-11-12 08:19:07,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:07,700 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:19:07,700 INFO L206 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, 1] [2024-11-12 08:19:07,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-12 08:19:07,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-12 08:19:07,901 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:19:07,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:19:07,901 INFO L85 PathProgramCache]: Analyzing trace with hash -548762382, now seen corresponding path program 3 times [2024-11-12 08:19:07,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:19:07,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656163937] [2024-11-12 08:19:07,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:19:07,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:19:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:19:08,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:19:08,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:19:08,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656163937] [2024-11-12 08:19:08,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656163937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:19:08,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354453407] [2024-11-12 08:19:08,199 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:19:08,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:19:08,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:19:08,201 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:19:08,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 08:19:08,302 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-12 08:19:08,303 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:19:08,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-12 08:19:08,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:19:08,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:19:08,481 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 08:19:08,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354453407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:19:08,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 08:19:08,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-11-12 08:19:08,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782295995] [2024-11-12 08:19:08,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:19:08,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 08:19:08,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:19:08,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 08:19:08,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-12 08:19:08,483 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:19:08,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 517 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:08,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:19:08,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:19:08,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:19:09,453 INFO L124 PetriNetUnfolderBase]: 7121/9877 cut-off events. [2024-11-12 08:19:09,453 INFO L125 PetriNetUnfolderBase]: For 18664/18664 co-relation queries the response was YES. [2024-11-12 08:19:09,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28910 conditions, 9877 events. 7121/9877 cut-off events. For 18664/18664 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 49098 event pairs, 1821 based on Foata normal form. 1/8890 useless extension candidates. Maximal degree in co-relation 28886. Up to 3471 conditions per place. [2024-11-12 08:19:09,507 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 143 selfloop transitions, 26 changer transitions 1/171 dead transitions. [2024-11-12 08:19:09,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 171 transitions, 1261 flow [2024-11-12 08:19:09,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 08:19:09,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 08:19:09,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-11-12 08:19:09,508 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4475 [2024-11-12 08:19:09,508 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 517 flow. Second operand 10 states and 179 transitions. [2024-11-12 08:19:09,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 171 transitions, 1261 flow [2024-11-12 08:19:09,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 171 transitions, 1227 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-12 08:19:09,537 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 672 flow [2024-11-12 08:19:09,537 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=672, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2024-11-12 08:19:09,537 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 49 predicate places. [2024-11-12 08:19:09,538 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 672 flow [2024-11-12 08:19:09,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:09,538 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:19:09,538 INFO L206 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, 1] [2024-11-12 08:19:09,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-12 08:19:09,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-12 08:19:09,739 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:19:09,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:19:09,739 INFO L85 PathProgramCache]: Analyzing trace with hash 180881828, now seen corresponding path program 4 times [2024-11-12 08:19:09,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:19:09,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292185022] [2024-11-12 08:19:09,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:19:09,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:19:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:19:10,012 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:19:10,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:19:10,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292185022] [2024-11-12 08:19:10,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292185022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:19:10,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847685089] [2024-11-12 08:19:10,013 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 08:19:10,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:19:10,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:19:10,015 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:19:10,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-12 08:19:10,101 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 08:19:10,102 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:19:10,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 08:19:10,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:19:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 08:19:10,239 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:19:10,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 08:19:10,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847685089] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:19:10,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:19:10,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 7] total 19 [2024-11-12 08:19:10,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457460306] [2024-11-12 08:19:10,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:19:10,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:19:10,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:19:10,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:19:10,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2024-11-12 08:19:10,612 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:19:10,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 672 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:10,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:19:10,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:19:10,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:19:12,519 INFO L124 PetriNetUnfolderBase]: 15416/21930 cut-off events. [2024-11-12 08:19:12,519 INFO L125 PetriNetUnfolderBase]: For 44641/44641 co-relation queries the response was YES. [2024-11-12 08:19:12,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62170 conditions, 21930 events. 15416/21930 cut-off events. For 44641/44641 co-relation queries the response was YES. Maximal size of possible extension queue 908. Compared 130113 event pairs, 1402 based on Foata normal form. 2/19390 useless extension candidates. Maximal degree in co-relation 62142. Up to 7202 conditions per place. [2024-11-12 08:19:12,745 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 182 selfloop transitions, 90 changer transitions 3/276 dead transitions. [2024-11-12 08:19:12,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 276 transitions, 2518 flow [2024-11-12 08:19:12,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 08:19:12,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 08:19:12,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-11-12 08:19:12,747 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49318181818181817 [2024-11-12 08:19:12,747 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 672 flow. Second operand 11 states and 217 transitions. [2024-11-12 08:19:12,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 276 transitions, 2518 flow [2024-11-12 08:19:12,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 276 transitions, 2436 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-11-12 08:19:12,843 INFO L231 Difference]: Finished difference. Result has 100 places, 154 transitions, 1821 flow [2024-11-12 08:19:12,843 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1821, PETRI_PLACES=100, PETRI_TRANSITIONS=154} [2024-11-12 08:19:12,844 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 63 predicate places. [2024-11-12 08:19:12,844 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 154 transitions, 1821 flow [2024-11-12 08:19:12,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:12,844 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:19:12,844 INFO L206 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, 1] [2024-11-12 08:19:12,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-12 08:19:13,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-12 08:19:13,046 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)] === [2024-11-12 08:19:13,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:19:13,046 INFO L85 PathProgramCache]: Analyzing trace with hash -259686146, now seen corresponding path program 5 times [2024-11-12 08:19:13,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:19:13,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517239234] [2024-11-12 08:19:13,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:19:13,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:19:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:19:13,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:19:13,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:19:13,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517239234] [2024-11-12 08:19:13,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517239234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:19:13,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763138238] [2024-11-12 08:19:13,322 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 08:19:13,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:19:13,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:19:13,324 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:19:13,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-12 08:19:13,425 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:19:13,425 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:19:13,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 08:19:13,428 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:19:13,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:19:13,643 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:19:13,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 08:19:13,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763138238] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:19:13,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:19:13,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 10] total 25 [2024-11-12 08:19:13,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842961628] [2024-11-12 08:19:13,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:19:13,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 08:19:13,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:19:13,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 08:19:13,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2024-11-12 08:19:13,993 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:19:13,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 154 transitions, 1821 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:13,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:19:13,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:19:13,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:19:16,199 INFO L124 PetriNetUnfolderBase]: 16465/23353 cut-off events. [2024-11-12 08:19:16,199 INFO L125 PetriNetUnfolderBase]: For 75369/75369 co-relation queries the response was YES. [2024-11-12 08:19:16,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80371 conditions, 23353 events. 16465/23353 cut-off events. For 75369/75369 co-relation queries the response was YES. Maximal size of possible extension queue 971. Compared 137611 event pairs, 2267 based on Foata normal form. 2/22082 useless extension candidates. Maximal degree in co-relation 80336. Up to 5589 conditions per place. [2024-11-12 08:19:16,655 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 234 selfloop transitions, 130 changer transitions 3/368 dead transitions. [2024-11-12 08:19:16,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 368 transitions, 3696 flow [2024-11-12 08:19:16,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 08:19:16,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-12 08:19:16,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 266 transitions. [2024-11-12 08:19:16,657 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5115384615384615 [2024-11-12 08:19:16,657 INFO L175 Difference]: Start difference. First operand has 100 places, 154 transitions, 1821 flow. Second operand 13 states and 266 transitions. [2024-11-12 08:19:16,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 368 transitions, 3696 flow [2024-11-12 08:19:16,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 368 transitions, 3652 flow, removed 22 selfloop flow, removed 0 redundant places. [2024-11-12 08:19:16,803 INFO L231 Difference]: Finished difference. Result has 117 places, 199 transitions, 2689 flow [2024-11-12 08:19:16,804 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1791, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2689, PETRI_PLACES=117, PETRI_TRANSITIONS=199} [2024-11-12 08:19:16,804 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 80 predicate places. [2024-11-12 08:19:16,804 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 199 transitions, 2689 flow [2024-11-12 08:19:16,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:16,804 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:19:16,804 INFO L206 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, 1] [2024-11-12 08:19:16,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-12 08:19:17,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:19:17,005 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:19:17,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:19:17,006 INFO L85 PathProgramCache]: Analyzing trace with hash 2012363864, now seen corresponding path program 6 times [2024-11-12 08:19:17,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:19:17,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692748197] [2024-11-12 08:19:17,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:19:17,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:19:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:19:17,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:19:17,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:19:17,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692748197] [2024-11-12 08:19:17,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692748197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:19:17,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201103264] [2024-11-12 08:19:17,281 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 08:19:17,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:19:17,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:19:17,283 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:19:17,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-12 08:19:17,368 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-12 08:19:17,368 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:19:17,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-12 08:19:17,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:19:17,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:19:17,512 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 08:19:17,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201103264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:19:17,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 08:19:17,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-11-12 08:19:17,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791143570] [2024-11-12 08:19:17,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:19:17,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 08:19:17,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:19:17,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 08:19:17,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-12 08:19:17,514 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:19:17,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 199 transitions, 2689 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:17,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:19:17,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:19:17,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:19:20,221 INFO L124 PetriNetUnfolderBase]: 16465/23349 cut-off events. [2024-11-12 08:19:20,222 INFO L125 PetriNetUnfolderBase]: For 100463/100463 co-relation queries the response was YES. [2024-11-12 08:19:20,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86020 conditions, 23349 events. 16465/23349 cut-off events. For 100463/100463 co-relation queries the response was YES. Maximal size of possible extension queue 981. Compared 137590 event pairs, 4601 based on Foata normal form. 2/22078 useless extension candidates. Maximal degree in co-relation 85980. Up to 7885 conditions per place. [2024-11-12 08:19:20,479 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 221 selfloop transitions, 95 changer transitions 2/319 dead transitions. [2024-11-12 08:19:20,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 319 transitions, 4021 flow [2024-11-12 08:19:20,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 08:19:20,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 08:19:20,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-11-12 08:19:20,481 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.435 [2024-11-12 08:19:20,481 INFO L175 Difference]: Start difference. First operand has 117 places, 199 transitions, 2689 flow. Second operand 10 states and 174 transitions. [2024-11-12 08:19:20,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 319 transitions, 4021 flow [2024-11-12 08:19:20,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 319 transitions, 3943 flow, removed 32 selfloop flow, removed 2 redundant places. [2024-11-12 08:19:20,881 INFO L231 Difference]: Finished difference. Result has 128 places, 213 transitions, 3205 flow [2024-11-12 08:19:20,881 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2611, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3205, PETRI_PLACES=128, PETRI_TRANSITIONS=213} [2024-11-12 08:19:20,882 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 91 predicate places. [2024-11-12 08:19:20,882 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 213 transitions, 3205 flow [2024-11-12 08:19:20,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:20,882 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:19:20,882 INFO L206 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, 1, 1] [2024-11-12 08:19:20,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-12 08:19:21,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-12 08:19:21,083 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:19:21,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:19:21,084 INFO L85 PathProgramCache]: Analyzing trace with hash 161506056, now seen corresponding path program 1 times [2024-11-12 08:19:21,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:19:21,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425089754] [2024-11-12 08:19:21,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:19:21,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:19:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:19:21,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 08:19:21,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:19:21,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425089754] [2024-11-12 08:19:21,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425089754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:19:21,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129079499] [2024-11-12 08:19:21,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:19:21,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:19:21,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:19:21,235 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:19:21,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-12 08:19:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:19:21,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 08:19:21,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:19:21,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 08:19:21,433 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:19:21,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 08:19:21,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129079499] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:19:21,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:19:21,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2024-11-12 08:19:21,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908075794] [2024-11-12 08:19:21,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:19:21,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:19:21,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:19:21,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:19:21,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-12 08:19:21,514 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:19:21,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 213 transitions, 3205 flow. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:21,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:19:21,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:19:21,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:19:24,164 INFO L124 PetriNetUnfolderBase]: 15432/21927 cut-off events. [2024-11-12 08:19:24,165 INFO L125 PetriNetUnfolderBase]: For 120372/120372 co-relation queries the response was YES. [2024-11-12 08:19:24,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84383 conditions, 21927 events. 15432/21927 cut-off events. For 120372/120372 co-relation queries the response was YES. Maximal size of possible extension queue 926. Compared 130032 event pairs, 7811 based on Foata normal form. 250/20999 useless extension candidates. Maximal degree in co-relation 84338. Up to 11556 conditions per place. [2024-11-12 08:19:24,417 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 278 selfloop transitions, 20 changer transitions 0/299 dead transitions. [2024-11-12 08:19:24,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 299 transitions, 4606 flow [2024-11-12 08:19:24,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 08:19:24,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 08:19:24,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-11-12 08:19:24,418 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-11-12 08:19:24,418 INFO L175 Difference]: Start difference. First operand has 128 places, 213 transitions, 3205 flow. Second operand 8 states and 136 transitions. [2024-11-12 08:19:24,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 299 transitions, 4606 flow [2024-11-12 08:19:24,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 299 transitions, 4491 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-11-12 08:19:24,718 INFO L231 Difference]: Finished difference. Result has 131 places, 201 transitions, 3004 flow [2024-11-12 08:19:24,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2910, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3004, PETRI_PLACES=131, PETRI_TRANSITIONS=201} [2024-11-12 08:19:24,719 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 94 predicate places. [2024-11-12 08:19:24,719 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 201 transitions, 3004 flow [2024-11-12 08:19:24,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:24,719 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:19:24,719 INFO L206 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, 1, 1] [2024-11-12 08:19:24,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-12 08:19:24,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:19:24,920 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:19:24,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:19:24,921 INFO L85 PathProgramCache]: Analyzing trace with hash -22213174, now seen corresponding path program 1 times [2024-11-12 08:19:24,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:19:24,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450761092] [2024-11-12 08:19:24,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:19:24,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:19:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:19:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 08:19:25,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:19:25,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450761092] [2024-11-12 08:19:25,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450761092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:19:25,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:19:25,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 08:19:25,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331081442] [2024-11-12 08:19:25,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:19:25,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:19:25,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:19:25,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:19:25,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:19:25,008 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:19:25,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 201 transitions, 3004 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:25,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:19:25,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:19:25,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:19:26,793 INFO L124 PetriNetUnfolderBase]: 10669/15684 cut-off events. [2024-11-12 08:19:26,793 INFO L125 PetriNetUnfolderBase]: For 81220/81220 co-relation queries the response was YES. [2024-11-12 08:19:26,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59965 conditions, 15684 events. 10669/15684 cut-off events. For 81220/81220 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 92926 event pairs, 5420 based on Foata normal form. 0/15352 useless extension candidates. Maximal degree in co-relation 59919. Up to 7874 conditions per place. [2024-11-12 08:19:26,917 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 146 selfloop transitions, 18 changer transitions 19/184 dead transitions. [2024-11-12 08:19:26,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 184 transitions, 2529 flow [2024-11-12 08:19:26,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:19:26,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:19:26,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2024-11-12 08:19:26,918 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-11-12 08:19:26,918 INFO L175 Difference]: Start difference. First operand has 131 places, 201 transitions, 3004 flow. Second operand 5 states and 95 transitions. [2024-11-12 08:19:26,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 184 transitions, 2529 flow [2024-11-12 08:19:27,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 184 transitions, 2357 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-11-12 08:19:27,155 INFO L231 Difference]: Finished difference. Result has 127 places, 131 transitions, 1642 flow [2024-11-12 08:19:27,155 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1783, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1642, PETRI_PLACES=127, PETRI_TRANSITIONS=131} [2024-11-12 08:19:27,156 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 90 predicate places. [2024-11-12 08:19:27,156 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 131 transitions, 1642 flow [2024-11-12 08:19:27,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:27,156 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:19:27,156 INFO L206 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, 1, 1] [2024-11-12 08:19:27,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-12 08:19:27,157 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:19:27,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:19:27,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1201822886, now seen corresponding path program 1 times [2024-11-12 08:19:27,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:19:27,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591379710] [2024-11-12 08:19:27,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:19:27,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:19:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:19:27,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 08:19:27,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:19:27,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591379710] [2024-11-12 08:19:27,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591379710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:19:27,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:19:27,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 08:19:27,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841553810] [2024-11-12 08:19:27,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:19:27,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:19:27,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:19:27,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:19:27,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:19:27,248 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:19:27,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 131 transitions, 1642 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:27,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:19:27,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:19:27,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:19:28,193 INFO L124 PetriNetUnfolderBase]: 5138/7529 cut-off events. [2024-11-12 08:19:28,193 INFO L125 PetriNetUnfolderBase]: For 35163/35163 co-relation queries the response was YES. [2024-11-12 08:19:28,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28157 conditions, 7529 events. 5138/7529 cut-off events. For 35163/35163 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 38939 event pairs, 3182 based on Foata normal form. 325/7853 useless extension candidates. Maximal degree in co-relation 28115. Up to 6481 conditions per place. [2024-11-12 08:19:28,231 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 66 selfloop transitions, 2 changer transitions 49/118 dead transitions. [2024-11-12 08:19:28,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 118 transitions, 1362 flow [2024-11-12 08:19:28,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:19:28,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:19:28,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-11-12 08:19:28,233 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-11-12 08:19:28,233 INFO L175 Difference]: Start difference. First operand has 127 places, 131 transitions, 1642 flow. Second operand 5 states and 85 transitions. [2024-11-12 08:19:28,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 118 transitions, 1362 flow [2024-11-12 08:19:28,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 118 transitions, 1241 flow, removed 18 selfloop flow, removed 18 redundant places. [2024-11-12 08:19:28,287 INFO L231 Difference]: Finished difference. Result has 107 places, 69 transitions, 530 flow [2024-11-12 08:19:28,287 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=530, PETRI_PLACES=107, PETRI_TRANSITIONS=69} [2024-11-12 08:19:28,288 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 70 predicate places. [2024-11-12 08:19:28,288 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 69 transitions, 530 flow [2024-11-12 08:19:28,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:28,288 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:19:28,288 INFO L206 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, 1, 1, 1] [2024-11-12 08:19:28,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-12 08:19:28,288 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:19:28,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:19:28,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1787561796, now seen corresponding path program 1 times [2024-11-12 08:19:28,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:19:28,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752840452] [2024-11-12 08:19:28,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:19:28,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:19:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:19:28,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 08:19:28,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:19:28,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752840452] [2024-11-12 08:19:28,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752840452] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:19:28,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076458387] [2024-11-12 08:19:28,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:19:28,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:19:28,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:19:28,427 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:19:28,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-12 08:19:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:19:28,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 08:19:28,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:19:28,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:19:28,638 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:19:28,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:19:28,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076458387] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:19:28,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:19:28,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 15 [2024-11-12 08:19:28,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193425500] [2024-11-12 08:19:28,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:19:28,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:19:28,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:19:28,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:19:28,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-12 08:19:28,734 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:19:28,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 69 transitions, 530 flow. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:28,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:19:28,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:19:28,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:19:29,391 INFO L124 PetriNetUnfolderBase]: 5328/7600 cut-off events. [2024-11-12 08:19:29,391 INFO L125 PetriNetUnfolderBase]: For 20007/20007 co-relation queries the response was YES. [2024-11-12 08:19:29,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26240 conditions, 7600 events. 5328/7600 cut-off events. For 20007/20007 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 36886 event pairs, 2253 based on Foata normal form. 331/7930 useless extension candidates. Maximal degree in co-relation 26209. Up to 4056 conditions per place. [2024-11-12 08:19:29,437 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 86 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2024-11-12 08:19:29,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 99 transitions, 943 flow [2024-11-12 08:19:29,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 08:19:29,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 08:19:29,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-11-12 08:19:29,438 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29642857142857143 [2024-11-12 08:19:29,438 INFO L175 Difference]: Start difference. First operand has 107 places, 69 transitions, 530 flow. Second operand 7 states and 83 transitions. [2024-11-12 08:19:29,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 99 transitions, 943 flow [2024-11-12 08:19:29,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 99 transitions, 844 flow, removed 24 selfloop flow, removed 11 redundant places. [2024-11-12 08:19:29,474 INFO L231 Difference]: Finished difference. Result has 78 places, 70 transitions, 506 flow [2024-11-12 08:19:29,474 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=506, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2024-11-12 08:19:29,475 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 41 predicate places. [2024-11-12 08:19:29,475 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 506 flow [2024-11-12 08:19:29,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:29,475 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:19:29,475 INFO L206 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, 1, 1, 1, 1] [2024-11-12 08:19:29,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-12 08:19:29,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:19:29,676 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:19:29,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:19:29,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1549905052, now seen corresponding path program 1 times [2024-11-12 08:19:29,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:19:29,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383146048] [2024-11-12 08:19:29,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:19:29,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:19:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:19:31,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:19:31,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:19:31,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383146048] [2024-11-12 08:19:31,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383146048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:19:31,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367046383] [2024-11-12 08:19:31,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:19:31,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:19:31,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:19:31,568 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:19:31,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-12 08:19:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:19:31,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-12 08:19:31,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:19:32,085 INFO L349 Elim1Store]: treesize reduction 18, result has 51.4 percent of original size [2024-11-12 08:19:32,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 36 [2024-11-12 08:19:32,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:19:32,132 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 08:19:32,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367046383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:19:32,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 08:19:32,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 25 [2024-11-12 08:19:32,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696924275] [2024-11-12 08:19:32,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:19:32,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 08:19:32,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:19:32,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 08:19:32,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2024-11-12 08:19:32,137 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-12 08:19:32,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 70 transitions, 506 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:32,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:19:32,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-12 08:19:32,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:19:33,601 INFO L124 PetriNetUnfolderBase]: 8016/11472 cut-off events. [2024-11-12 08:19:33,601 INFO L125 PetriNetUnfolderBase]: For 21188/21188 co-relation queries the response was YES. [2024-11-12 08:19:33,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39264 conditions, 11472 events. 8016/11472 cut-off events. For 21188/21188 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 63429 event pairs, 627 based on Foata normal form. 2/11473 useless extension candidates. Maximal degree in co-relation 39239. Up to 6293 conditions per place. [2024-11-12 08:19:33,652 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 203 selfloop transitions, 22 changer transitions 12/238 dead transitions. [2024-11-12 08:19:33,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 238 transitions, 1963 flow [2024-11-12 08:19:33,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 08:19:33,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 08:19:33,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-11-12 08:19:33,654 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4975 [2024-11-12 08:19:33,654 INFO L175 Difference]: Start difference. First operand has 78 places, 70 transitions, 506 flow. Second operand 10 states and 199 transitions. [2024-11-12 08:19:33,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 238 transitions, 1963 flow [2024-11-12 08:19:33,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 238 transitions, 1923 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 08:19:33,668 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 723 flow [2024-11-12 08:19:33,668 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=723, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2024-11-12 08:19:33,668 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 53 predicate places. [2024-11-12 08:19:33,668 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 723 flow [2024-11-12 08:19:33,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:19:33,669 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:19:33,669 INFO L206 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, 1, 1, 1, 1] [2024-11-12 08:19:33,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-12 08:19:33,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-12 08:19:33,869 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:19:33,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:19:33,870 INFO L85 PathProgramCache]: Analyzing trace with hash 809436664, now seen corresponding path program 2 times [2024-11-12 08:19:33,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:19:33,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664231617] [2024-11-12 08:19:33,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:19:33,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:19:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:19:35,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:19:35,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:19:35,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664231617] [2024-11-12 08:19:35,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664231617] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:19:35,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617926855] [2024-11-12 08:19:35,230 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:19:35,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:19:35,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:19:35,232 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:19:35,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-12 08:19:35,354 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:19:35,354 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:19:35,356 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-12 08:19:35,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:19:35,799 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2024-11-12 08:19:35,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 41 [2024-11-12 08:19:35,872 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:19:35,872 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:19:37,149 INFO L349 Elim1Store]: treesize reduction 70, result has 87.8 percent of original size [2024-11-12 08:19:37,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 198 treesize of output 550