./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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/bench-exp3x3.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 21325645cf7d2c394d0eaa1628a16a96624f1addcdd1b56c7e8aa2473acfaf07 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:39:43,409 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:39:43,476 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:39:43,481 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:39:43,483 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:39:43,508 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:39:43,510 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:39:43,510 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:39:43,511 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:39:43,511 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:39:43,511 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:39:43,512 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:39:43,512 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:39:43,514 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:39:43,514 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:39:43,514 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:39:43,515 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:39:43,515 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:39:43,515 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:39:43,515 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:39:43,515 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:39:43,518 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:39:43,519 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:39:43,519 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:39:43,519 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:39:43,519 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:39:43,519 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:39:43,519 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:39:43,520 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:39:43,520 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:39:43,520 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:39:43,520 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:39:43,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:39:43,520 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:39:43,520 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:39:43,521 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:39:43,521 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:39:43,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:39:43,521 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:39:43,521 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:39:43,521 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:39:43,523 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:39:43,523 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21325645cf7d2c394d0eaa1628a16a96624f1addcdd1b56c7e8aa2473acfaf07 [2024-11-09 02:39:43,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:39:43,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:39:43,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:39:43,737 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:39:43,737 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:39:43,738 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2024-11-09 02:39:44,922 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:39:45,067 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:39:45,068 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2024-11-09 02:39:45,074 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e41e9aea/5f1074db2a73456f99ede5ec30b2fb62/FLAGb647430bd [2024-11-09 02:39:45,475 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e41e9aea/5f1074db2a73456f99ede5ec30b2fb62 [2024-11-09 02:39:45,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:39:45,478 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:39:45,480 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:39:45,480 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:39:45,484 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:39:45,485 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:39:45" (1/1) ... [2024-11-09 02:39:45,485 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64b9a617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:45, skipping insertion in model container [2024-11-09 02:39:45,486 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:39:45" (1/1) ... [2024-11-09 02:39:45,504 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:39:45,675 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/bench-exp3x3.wvr.c[2703,2716] [2024-11-09 02:39:45,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:39:45,693 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:39:45,713 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/bench-exp3x3.wvr.c[2703,2716] [2024-11-09 02:39:45,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:39:45,733 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:39:45,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:45 WrapperNode [2024-11-09 02:39:45,734 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:39:45,735 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:39:45,735 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:39:45,735 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:39:45,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:45" (1/1) ... [2024-11-09 02:39:45,747 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:45" (1/1) ... [2024-11-09 02:39:45,764 INFO L138 Inliner]: procedures = 21, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2024-11-09 02:39:45,765 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:39:45,765 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:39:45,765 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:39:45,765 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:39:45,774 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:45" (1/1) ... [2024-11-09 02:39:45,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:45" (1/1) ... [2024-11-09 02:39:45,776 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:45" (1/1) ... [2024-11-09 02:39:45,797 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 02:39:45,798 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:45" (1/1) ... [2024-11-09 02:39:45,798 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:45" (1/1) ... [2024-11-09 02:39:45,802 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:45" (1/1) ... [2024-11-09 02:39:45,805 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:45" (1/1) ... [2024-11-09 02:39:45,808 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:45" (1/1) ... [2024-11-09 02:39:45,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:45" (1/1) ... [2024-11-09 02:39:45,811 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:39:45,812 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:39:45,813 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:39:45,813 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:39:45,813 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:45" (1/1) ... [2024-11-09 02:39:45,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:39:45,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:39:45,850 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) [2024-11-09 02:39:45,853 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 [2024-11-09 02:39:45,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:39:45,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:39:45,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:39:45,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:39:45,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:39:45,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 02:39:45,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 02:39:45,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-09 02:39:45,903 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-09 02:39:45,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:39:45,903 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-11-09 02:39:45,903 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-11-09 02:39:45,903 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-11-09 02:39:45,903 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-11-09 02:39:45,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:39:45,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:39:45,904 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:39:46,055 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:39:46,057 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:39:46,258 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:39:46,259 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:39:46,388 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:39:46,390 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-09 02:39:46,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:39:46 BoogieIcfgContainer [2024-11-09 02:39:46,391 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:39:46,393 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:39:46,394 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:39:46,396 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:39:46,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:39:45" (1/3) ... [2024-11-09 02:39:46,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21276e97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:39:46, skipping insertion in model container [2024-11-09 02:39:46,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:45" (2/3) ... [2024-11-09 02:39:46,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21276e97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:39:46, skipping insertion in model container [2024-11-09 02:39:46,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:39:46" (3/3) ... [2024-11-09 02:39:46,401 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2024-11-09 02:39:46,416 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:39:46,416 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:39:46,416 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:39:46,482 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-11-09 02:39:46,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 46 transitions, 134 flow [2024-11-09 02:39:46,540 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2024-11-09 02:39:46,540 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-09 02:39:46,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 40 events. 6/40 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-11-09 02:39:46,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 46 transitions, 134 flow [2024-11-09 02:39:46,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 114 flow [2024-11-09 02:39:46,558 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:39:46,566 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;@17d511ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:39:46,567 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-09 02:39:46,579 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:39:46,579 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2024-11-09 02:39:46,580 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-09 02:39:46,580 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:46,580 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:39:46,581 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 4 more)] === [2024-11-09 02:39:46,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:46,585 INFO L85 PathProgramCache]: Analyzing trace with hash -2065069486, now seen corresponding path program 1 times [2024-11-09 02:39:46,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:46,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607037860] [2024-11-09 02:39:46,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:46,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:39:47,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:47,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607037860] [2024-11-09 02:39:47,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607037860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:39:47,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:39:47,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:39:47,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723190906] [2024-11-09 02:39:47,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:39:47,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:39:47,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:47,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:39:47,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:39:47,179 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:39:47,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-11-09 02:39:47,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:47,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:39:47,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:48,610 INFO L124 PetriNetUnfolderBase]: 18895/21812 cut-off events. [2024-11-09 02:39:48,610 INFO L125 PetriNetUnfolderBase]: For 1387/1387 co-relation queries the response was YES. [2024-11-09 02:39:48,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44837 conditions, 21812 events. 18895/21812 cut-off events. For 1387/1387 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 69696 event pairs, 1570 based on Foata normal form. 1/11916 useless extension candidates. Maximal degree in co-relation 38647. Up to 20725 conditions per place. [2024-11-09 02:39:48,754 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 53 selfloop transitions, 7 changer transitions 1/68 dead transitions. [2024-11-09 02:39:48,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 327 flow [2024-11-09 02:39:48,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:39:48,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:39:48,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-09 02:39:48,765 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7318840579710145 [2024-11-09 02:39:48,767 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 114 flow. Second operand 3 states and 101 transitions. [2024-11-09 02:39:48,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 327 flow [2024-11-09 02:39:48,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 281 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-09 02:39:48,790 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 137 flow [2024-11-09 02:39:48,791 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2024-11-09 02:39:48,794 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -9 predicate places. [2024-11-09 02:39:48,796 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 137 flow [2024-11-09 02:39:48,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-11-09 02:39:48,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:48,797 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:39:48,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:39:48,797 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 4 more)] === [2024-11-09 02:39:48,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:48,798 INFO L85 PathProgramCache]: Analyzing trace with hash -964997093, now seen corresponding path program 1 times [2024-11-09 02:39:48,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:48,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072439701] [2024-11-09 02:39:48,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:48,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:48,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:39:48,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:48,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072439701] [2024-11-09 02:39:48,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072439701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:39:48,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:39:48,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:39:48,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66401298] [2024-11-09 02:39:48,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:39:48,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:39:48,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:48,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:39:48,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:39:48,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:39:48,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-09 02:39:48,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:48,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:39:48,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:50,535 INFO L124 PetriNetUnfolderBase]: 23877/27726 cut-off events. [2024-11-09 02:39:50,535 INFO L125 PetriNetUnfolderBase]: For 6138/6138 co-relation queries the response was YES. [2024-11-09 02:39:50,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68956 conditions, 27726 events. 23877/27726 cut-off events. For 6138/6138 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 95814 event pairs, 2287 based on Foata normal form. 294/27956 useless extension candidates. Maximal degree in co-relation 18873. Up to 12310 conditions per place. [2024-11-09 02:39:50,694 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 106 selfloop transitions, 10 changer transitions 0/123 dead transitions. [2024-11-09 02:39:50,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 123 transitions, 595 flow [2024-11-09 02:39:50,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:39:50,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:39:50,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 171 transitions. [2024-11-09 02:39:50,698 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7434782608695653 [2024-11-09 02:39:50,698 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 137 flow. Second operand 5 states and 171 transitions. [2024-11-09 02:39:50,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 123 transitions, 595 flow [2024-11-09 02:39:50,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 123 transitions, 583 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:39:50,704 INFO L231 Difference]: Finished difference. Result has 48 places, 52 transitions, 195 flow [2024-11-09 02:39:50,705 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=48, PETRI_TRANSITIONS=52} [2024-11-09 02:39:50,706 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2024-11-09 02:39:50,706 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 52 transitions, 195 flow [2024-11-09 02:39:50,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-09 02:39:50,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:50,706 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:39:50,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:39:50,707 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 4 more)] === [2024-11-09 02:39:50,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:50,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1137220446, now seen corresponding path program 1 times [2024-11-09 02:39:50,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:50,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893632603] [2024-11-09 02:39:50,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:50,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:50,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:39:50,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:50,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893632603] [2024-11-09 02:39:50,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893632603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:39:50,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:39:50,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:39:50,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242410219] [2024-11-09 02:39:50,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:39:50,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:39:50,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:50,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:39:50,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:39:50,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:39:50,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 52 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-09 02:39:50,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:50,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:39:50,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:52,243 INFO L124 PetriNetUnfolderBase]: 23487/27336 cut-off events. [2024-11-09 02:39:52,243 INFO L125 PetriNetUnfolderBase]: For 19651/19651 co-relation queries the response was YES. [2024-11-09 02:39:52,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77644 conditions, 27336 events. 23487/27336 cut-off events. For 19651/19651 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 95913 event pairs, 1822 based on Foata normal form. 390/27662 useless extension candidates. Maximal degree in co-relation 40073. Up to 11920 conditions per place. [2024-11-09 02:39:52,570 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 105 selfloop transitions, 8 changer transitions 0/120 dead transitions. [2024-11-09 02:39:52,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 120 transitions, 612 flow [2024-11-09 02:39:52,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:39:52,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:39:52,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2024-11-09 02:39:52,574 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7347826086956522 [2024-11-09 02:39:52,574 INFO L175 Difference]: Start difference. First operand has 48 places, 52 transitions, 195 flow. Second operand 5 states and 169 transitions. [2024-11-09 02:39:52,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 120 transitions, 612 flow [2024-11-09 02:39:52,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 120 transitions, 612 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:39:52,590 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 209 flow [2024-11-09 02:39:52,590 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=209, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2024-11-09 02:39:52,591 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-11-09 02:39:52,592 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 209 flow [2024-11-09 02:39:52,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-09 02:39:52,592 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:52,592 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:39:52,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:39:52,592 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 4 more)] === [2024-11-09 02:39:52,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:52,594 INFO L85 PathProgramCache]: Analyzing trace with hash 2008324451, now seen corresponding path program 1 times [2024-11-09 02:39:52,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:52,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568020577] [2024-11-09 02:39:52,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:52,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:52,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:39:52,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:52,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568020577] [2024-11-09 02:39:52,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568020577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:39:52,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:39:52,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:39:52,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031782281] [2024-11-09 02:39:52,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:39:52,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:39:52,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:52,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:39:52,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:39:52,685 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:39:52,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-09 02:39:52,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:52,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:39:52,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:54,349 INFO L124 PetriNetUnfolderBase]: 31533/37371 cut-off events. [2024-11-09 02:39:54,349 INFO L125 PetriNetUnfolderBase]: For 44541/44541 co-relation queries the response was YES. [2024-11-09 02:39:54,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113751 conditions, 37371 events. 31533/37371 cut-off events. For 44541/44541 co-relation queries the response was YES. Maximal size of possible extension queue 1319. Compared 148585 event pairs, 4697 based on Foata normal form. 768/37856 useless extension candidates. Maximal degree in co-relation 59685. Up to 18028 conditions per place. [2024-11-09 02:39:54,660 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 121 selfloop transitions, 8 changer transitions 0/136 dead transitions. [2024-11-09 02:39:54,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 136 transitions, 844 flow [2024-11-09 02:39:54,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:39:54,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:39:54,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2024-11-09 02:39:54,662 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7217391304347827 [2024-11-09 02:39:54,662 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 209 flow. Second operand 5 states and 166 transitions. [2024-11-09 02:39:54,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 136 transitions, 844 flow [2024-11-09 02:39:54,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 136 transitions, 825 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:39:54,677 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 257 flow [2024-11-09 02:39:54,678 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=257, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2024-11-09 02:39:54,679 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-11-09 02:39:54,680 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 257 flow [2024-11-09 02:39:54,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-09 02:39:54,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:54,680 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:39:54,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:39:54,681 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 4 more)] === [2024-11-09 02:39:54,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:54,682 INFO L85 PathProgramCache]: Analyzing trace with hash -2093612161, now seen corresponding path program 2 times [2024-11-09 02:39:54,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:54,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700451935] [2024-11-09 02:39:54,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:54,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:54,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:39:54,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:54,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700451935] [2024-11-09 02:39:54,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700451935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:39:54,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:39:54,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:39:54,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492952611] [2024-11-09 02:39:54,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:39:54,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:39:54,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:54,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:39:54,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:39:54,791 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:39:54,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 257 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-09 02:39:54,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:54,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:39:54,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:56,936 INFO L124 PetriNetUnfolderBase]: 27965/32957 cut-off events. [2024-11-09 02:39:56,936 INFO L125 PetriNetUnfolderBase]: For 48148/48148 co-relation queries the response was YES. [2024-11-09 02:39:57,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114390 conditions, 32957 events. 27965/32957 cut-off events. For 48148/48148 co-relation queries the response was YES. Maximal size of possible extension queue 1148. Compared 123947 event pairs, 1761 based on Foata normal form. 416/33282 useless extension candidates. Maximal degree in co-relation 61594. Up to 14423 conditions per place. [2024-11-09 02:39:57,198 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 124 selfloop transitions, 11 changer transitions 0/142 dead transitions. [2024-11-09 02:39:57,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 142 transitions, 927 flow [2024-11-09 02:39:57,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:39:57,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:39:57,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 163 transitions. [2024-11-09 02:39:57,200 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7086956521739131 [2024-11-09 02:39:57,200 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 257 flow. Second operand 5 states and 163 transitions. [2024-11-09 02:39:57,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 142 transitions, 927 flow [2024-11-09 02:39:57,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 142 transitions, 927 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:39:57,342 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 318 flow [2024-11-09 02:39:57,342 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=318, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2024-11-09 02:39:57,342 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2024-11-09 02:39:57,342 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 318 flow [2024-11-09 02:39:57,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-09 02:39:57,343 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:57,343 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:39:57,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:39:57,343 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 4 more)] === [2024-11-09 02:39:57,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:57,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1588974486, now seen corresponding path program 1 times [2024-11-09 02:39:57,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:57,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88567432] [2024-11-09 02:39:57,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:57,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:57,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:39:57,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:57,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88567432] [2024-11-09 02:39:57,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88567432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:39:57,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:39:57,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:39:57,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672884388] [2024-11-09 02:39:57,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:39:57,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:39:57,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:57,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:39:57,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:39:57,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:39:57,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 318 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-09 02:39:57,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:57,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:39:57,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:59,409 INFO L124 PetriNetUnfolderBase]: 27528/32520 cut-off events. [2024-11-09 02:39:59,410 INFO L125 PetriNetUnfolderBase]: For 59590/59590 co-relation queries the response was YES. [2024-11-09 02:39:59,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119271 conditions, 32520 events. 27528/32520 cut-off events. For 59590/59590 co-relation queries the response was YES. Maximal size of possible extension queue 1148. Compared 124047 event pairs, 1418 based on Foata normal form. 437/32866 useless extension candidates. Maximal degree in co-relation 64676. Up to 14426 conditions per place. [2024-11-09 02:39:59,668 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 124 selfloop transitions, 8 changer transitions 0/139 dead transitions. [2024-11-09 02:39:59,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 139 transitions, 936 flow [2024-11-09 02:39:59,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:39:59,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:39:59,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-11-09 02:39:59,669 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-09 02:39:59,670 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 318 flow. Second operand 5 states and 161 transitions. [2024-11-09 02:39:59,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 139 transitions, 936 flow [2024-11-09 02:39:59,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 139 transitions, 925 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-09 02:39:59,787 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 321 flow [2024-11-09 02:39:59,787 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=321, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2024-11-09 02:39:59,787 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-11-09 02:39:59,787 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 321 flow [2024-11-09 02:39:59,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-09 02:39:59,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:59,788 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:39:59,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 02:39:59,788 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 4 more)] === [2024-11-09 02:39:59,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:59,788 INFO L85 PathProgramCache]: Analyzing trace with hash -71515683, now seen corresponding path program 1 times [2024-11-09 02:39:59,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:59,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543207385] [2024-11-09 02:39:59,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:59,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:39:59,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:59,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543207385] [2024-11-09 02:39:59,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543207385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:39:59,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971378074] [2024-11-09 02:39:59,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:59,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:39:59,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:39:59,869 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) [2024-11-09 02:39:59,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:39:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:59,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 02:39:59,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:40:00,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:40:00,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:40:00,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:40:00,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971378074] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:40:00,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:40:00,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-09 02:40:00,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190983693] [2024-11-09 02:40:00,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:40:00,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:40:00,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:00,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:40:00,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:40:00,276 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:40:00,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 321 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 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) [2024-11-09 02:40:00,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:00,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:40:00,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:02,845 INFO L124 PetriNetUnfolderBase]: 36429/43893 cut-off events. [2024-11-09 02:40:02,845 INFO L125 PetriNetUnfolderBase]: For 112035/112035 co-relation queries the response was YES. [2024-11-09 02:40:02,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168737 conditions, 43893 events. 36429/43893 cut-off events. For 112035/112035 co-relation queries the response was YES. Maximal size of possible extension queue 1695. Compared 191238 event pairs, 5834 based on Foata normal form. 776/44018 useless extension candidates. Maximal degree in co-relation 96482. Up to 19072 conditions per place. [2024-11-09 02:40:03,195 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 147 selfloop transitions, 8 changer transitions 0/162 dead transitions. [2024-11-09 02:40:03,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 162 transitions, 1254 flow [2024-11-09 02:40:03,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:40:03,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:40:03,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-11-09 02:40:03,196 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6782608695652174 [2024-11-09 02:40:03,196 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 321 flow. Second operand 5 states and 156 transitions. [2024-11-09 02:40:03,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 162 transitions, 1254 flow [2024-11-09 02:40:03,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 162 transitions, 1219 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-09 02:40:03,252 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 365 flow [2024-11-09 02:40:03,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=365, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-11-09 02:40:03,253 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 22 predicate places. [2024-11-09 02:40:03,253 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 365 flow [2024-11-09 02:40:03,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 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) [2024-11-09 02:40:03,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:03,254 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:03,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 02:40:03,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:40:03,454 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 4 more)] === [2024-11-09 02:40:03,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:03,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1513196829, now seen corresponding path program 2 times [2024-11-09 02:40:03,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:03,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966408008] [2024-11-09 02:40:03,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:03,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:03,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:40:03,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:03,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966408008] [2024-11-09 02:40:03,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966408008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:03,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:03,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:40:03,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143406468] [2024-11-09 02:40:03,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:03,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:40:03,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:03,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:40:03,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:40:03,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:40:03,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 365 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-09 02:40:03,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:03,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:40:03,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:06,035 INFO L124 PetriNetUnfolderBase]: 32687/39219 cut-off events. [2024-11-09 02:40:06,035 INFO L125 PetriNetUnfolderBase]: For 98811/98811 co-relation queries the response was YES. [2024-11-09 02:40:06,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164337 conditions, 39219 events. 32687/39219 cut-off events. For 98811/98811 co-relation queries the response was YES. Maximal size of possible extension queue 1474. Compared 162622 event pairs, 2185 based on Foata normal form. 386/39242 useless extension candidates. Maximal degree in co-relation 106931. Up to 16920 conditions per place. [2024-11-09 02:40:06,380 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 152 selfloop transitions, 11 changer transitions 0/170 dead transitions. [2024-11-09 02:40:06,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 170 transitions, 1346 flow [2024-11-09 02:40:06,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:40:06,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:40:06,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-11-09 02:40:06,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-11-09 02:40:06,381 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 365 flow. Second operand 5 states and 155 transitions. [2024-11-09 02:40:06,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 170 transitions, 1346 flow [2024-11-09 02:40:06,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 170 transitions, 1346 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:40:06,721 INFO L231 Difference]: Finished difference. Result has 79 places, 70 transitions, 426 flow [2024-11-09 02:40:06,722 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=426, PETRI_PLACES=79, PETRI_TRANSITIONS=70} [2024-11-09 02:40:06,722 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-11-09 02:40:06,722 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 70 transitions, 426 flow [2024-11-09 02:40:06,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-09 02:40:06,723 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:06,723 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:06,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 02:40:06,723 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 4 more)] === [2024-11-09 02:40:06,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:06,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1466637382, now seen corresponding path program 1 times [2024-11-09 02:40:06,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:06,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394500568] [2024-11-09 02:40:06,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:06,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:06,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:40:06,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:06,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394500568] [2024-11-09 02:40:06,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394500568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:06,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:06,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:40:06,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6775156] [2024-11-09 02:40:06,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:06,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:40:06,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:06,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:40:06,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:40:06,800 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:40:06,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 426 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-09 02:40:06,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:06,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:40:06,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:09,166 INFO L124 PetriNetUnfolderBase]: 32297/38829 cut-off events. [2024-11-09 02:40:09,166 INFO L125 PetriNetUnfolderBase]: For 109998/109998 co-relation queries the response was YES. [2024-11-09 02:40:09,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170786 conditions, 38829 events. 32297/38829 cut-off events. For 109998/109998 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 162554 event pairs, 1846 based on Foata normal form. 390/38856 useless extension candidates. Maximal degree in co-relation 111214. Up to 17265 conditions per place. [2024-11-09 02:40:09,470 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 152 selfloop transitions, 8 changer transitions 0/167 dead transitions. [2024-11-09 02:40:09,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 167 transitions, 1355 flow [2024-11-09 02:40:09,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:40:09,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:40:09,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-11-09 02:40:09,471 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6652173913043479 [2024-11-09 02:40:09,471 INFO L175 Difference]: Start difference. First operand has 79 places, 70 transitions, 426 flow. Second operand 5 states and 153 transitions. [2024-11-09 02:40:09,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 167 transitions, 1355 flow [2024-11-09 02:40:09,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 167 transitions, 1344 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-09 02:40:09,787 INFO L231 Difference]: Finished difference. Result has 83 places, 69 transitions, 429 flow [2024-11-09 02:40:09,788 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=429, PETRI_PLACES=83, PETRI_TRANSITIONS=69} [2024-11-09 02:40:09,788 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 31 predicate places. [2024-11-09 02:40:09,788 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 429 flow [2024-11-09 02:40:09,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-09 02:40:09,789 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:09,789 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:09,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 02:40:09,789 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 4 more)] === [2024-11-09 02:40:09,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:09,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1284560570, now seen corresponding path program 2 times [2024-11-09 02:40:09,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:09,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591388439] [2024-11-09 02:40:09,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:09,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:09,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:40:09,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:09,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591388439] [2024-11-09 02:40:09,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591388439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:09,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:09,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:40:09,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440004489] [2024-11-09 02:40:09,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:09,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:40:09,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:09,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:40:09,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:40:09,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:40:09,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 69 transitions, 429 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-09 02:40:09,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:09,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:40:09,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:12,531 INFO L124 PetriNetUnfolderBase]: 31525/38201 cut-off events. [2024-11-09 02:40:12,532 INFO L125 PetriNetUnfolderBase]: For 112708/112708 co-relation queries the response was YES. [2024-11-09 02:40:12,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171232 conditions, 38201 events. 31525/38201 cut-off events. For 112708/112708 co-relation queries the response was YES. Maximal size of possible extension queue 1438. Compared 166762 event pairs, 5456 based on Foata normal form. 772/38466 useless extension candidates. Maximal degree in co-relation 111509. Up to 19731 conditions per place. [2024-11-09 02:40:12,848 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 147 selfloop transitions, 8 changer transitions 0/162 dead transitions. [2024-11-09 02:40:12,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 162 transitions, 1326 flow [2024-11-09 02:40:12,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:40:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:40:12,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2024-11-09 02:40:12,851 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6565217391304348 [2024-11-09 02:40:12,851 INFO L175 Difference]: Start difference. First operand has 83 places, 69 transitions, 429 flow. Second operand 5 states and 151 transitions. [2024-11-09 02:40:12,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 162 transitions, 1326 flow [2024-11-09 02:40:13,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 162 transitions, 1313 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-09 02:40:13,106 INFO L231 Difference]: Finished difference. Result has 88 places, 72 transitions, 469 flow [2024-11-09 02:40:13,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=469, PETRI_PLACES=88, PETRI_TRANSITIONS=72} [2024-11-09 02:40:13,107 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-11-09 02:40:13,107 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 72 transitions, 469 flow [2024-11-09 02:40:13,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-09 02:40:13,107 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:13,107 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:13,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 02:40:13,107 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 4 more)] === [2024-11-09 02:40:13,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:13,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1077542136, now seen corresponding path program 2 times [2024-11-09 02:40:13,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:13,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576893294] [2024-11-09 02:40:13,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:13,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:13,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:40:13,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:13,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576893294] [2024-11-09 02:40:13,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576893294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:13,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:13,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:40:13,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55697051] [2024-11-09 02:40:13,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:13,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:40:13,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:13,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:40:13,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:40:13,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:40:13,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 72 transitions, 469 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-09 02:40:13,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:13,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:40:13,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:15,915 INFO L124 PetriNetUnfolderBase]: 30541/37013 cut-off events. [2024-11-09 02:40:15,915 INFO L125 PetriNetUnfolderBase]: For 114341/114629 co-relation queries the response was YES. [2024-11-09 02:40:16,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172685 conditions, 37013 events. 30541/37013 cut-off events. For 114341/114629 co-relation queries the response was YES. Maximal size of possible extension queue 1359. Compared 161360 event pairs, 5914 based on Foata normal form. 1032/37826 useless extension candidates. Maximal degree in co-relation 155609. Up to 20395 conditions per place. [2024-11-09 02:40:16,230 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 167 selfloop transitions, 8 changer transitions 0/182 dead transitions. [2024-11-09 02:40:16,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 182 transitions, 1554 flow [2024-11-09 02:40:16,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:40:16,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:40:16,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-11-09 02:40:16,231 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.691304347826087 [2024-11-09 02:40:16,231 INFO L175 Difference]: Start difference. First operand has 88 places, 72 transitions, 469 flow. Second operand 5 states and 159 transitions. [2024-11-09 02:40:16,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 182 transitions, 1554 flow [2024-11-09 02:40:16,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 182 transitions, 1492 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-11-09 02:40:16,656 INFO L231 Difference]: Finished difference. Result has 92 places, 75 transitions, 500 flow [2024-11-09 02:40:16,657 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=500, PETRI_PLACES=92, PETRI_TRANSITIONS=75} [2024-11-09 02:40:16,657 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 40 predicate places. [2024-11-09 02:40:16,657 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 75 transitions, 500 flow [2024-11-09 02:40:16,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-09 02:40:16,657 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:16,657 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:16,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 02:40:16,658 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 4 more)] === [2024-11-09 02:40:16,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:16,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1587236977, now seen corresponding path program 2 times [2024-11-09 02:40:16,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:16,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110492672] [2024-11-09 02:40:16,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:16,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:16,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:40:16,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:16,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110492672] [2024-11-09 02:40:16,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110492672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:16,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:16,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:40:16,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392376998] [2024-11-09 02:40:16,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:16,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:40:16,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:16,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:40:16,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:40:16,706 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:40:16,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 75 transitions, 500 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-09 02:40:16,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:16,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:40:16,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:19,364 INFO L124 PetriNetUnfolderBase]: 29565/35979 cut-off events. [2024-11-09 02:40:19,364 INFO L125 PetriNetUnfolderBase]: For 132527/132783 co-relation queries the response was YES. [2024-11-09 02:40:19,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172134 conditions, 35979 events. 29565/35979 cut-off events. For 132527/132783 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 161874 event pairs, 7482 based on Foata normal form. 1020/36788 useless extension candidates. Maximal degree in co-relation 155985. Up to 19791 conditions per place. [2024-11-09 02:40:19,739 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 199 selfloop transitions, 8 changer transitions 0/214 dead transitions. [2024-11-09 02:40:19,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 214 transitions, 1853 flow [2024-11-09 02:40:19,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:40:19,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:40:19,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 170 transitions. [2024-11-09 02:40:19,740 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7391304347826086 [2024-11-09 02:40:19,740 INFO L175 Difference]: Start difference. First operand has 92 places, 75 transitions, 500 flow. Second operand 5 states and 170 transitions. [2024-11-09 02:40:19,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 214 transitions, 1853 flow [2024-11-09 02:40:19,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 214 transitions, 1791 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-11-09 02:40:19,981 INFO L231 Difference]: Finished difference. Result has 96 places, 78 transitions, 530 flow [2024-11-09 02:40:19,981 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=530, PETRI_PLACES=96, PETRI_TRANSITIONS=78} [2024-11-09 02:40:19,982 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 44 predicate places. [2024-11-09 02:40:19,982 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 78 transitions, 530 flow [2024-11-09 02:40:19,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-09 02:40:19,982 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:19,982 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:19,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 02:40:19,983 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 4 more)] === [2024-11-09 02:40:19,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:19,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1944060164, now seen corresponding path program 2 times [2024-11-09 02:40:19,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:19,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227433254] [2024-11-09 02:40:19,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:19,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:20,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:40:20,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:20,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227433254] [2024-11-09 02:40:20,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227433254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:40:20,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:40:20,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:40:20,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242422414] [2024-11-09 02:40:20,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:20,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:40:20,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:20,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:40:20,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:40:20,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-09 02:40:20,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 78 transitions, 530 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-09 02:40:20,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:20,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-09 02:40:20,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:22,791 INFO L124 PetriNetUnfolderBase]: 28729/35143 cut-off events. [2024-11-09 02:40:22,791 INFO L125 PetriNetUnfolderBase]: For 138356/138612 co-relation queries the response was YES. [2024-11-09 02:40:22,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173820 conditions, 35143 events. 28729/35143 cut-off events. For 138356/138612 co-relation queries the response was YES. Maximal size of possible extension queue 1302. Compared 159095 event pairs, 8432 based on Foata normal form. 876/35808 useless extension candidates. Maximal degree in co-relation 157576. Up to 19637 conditions per place. [2024-11-09 02:40:23,114 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 199 selfloop transitions, 8 changer transitions 0/214 dead transitions. [2024-11-09 02:40:23,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 214 transitions, 1842 flow [2024-11-09 02:40:23,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:40:23,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:40:23,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-11-09 02:40:23,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7260869565217392 [2024-11-09 02:40:23,115 INFO L175 Difference]: Start difference. First operand has 96 places, 78 transitions, 530 flow. Second operand 5 states and 167 transitions. [2024-11-09 02:40:23,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 214 transitions, 1842 flow [2024-11-09 02:40:23,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 214 transitions, 1833 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 02:40:23,329 INFO L231 Difference]: Finished difference. Result has 101 places, 81 transitions, 578 flow [2024-11-09 02:40:23,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=578, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2024-11-09 02:40:23,330 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 49 predicate places. [2024-11-09 02:40:23,330 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 578 flow [2024-11-09 02:40:23,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-09 02:40:23,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:23,331 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:23,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 02:40:23,331 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 4 more)] === [2024-11-09 02:40:23,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:23,332 INFO L85 PathProgramCache]: Analyzing trace with hash 776290359, now seen corresponding path program 1 times [2024-11-09 02:40:23,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:23,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658746685] [2024-11-09 02:40:23,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:23,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:23,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:40:23,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:23,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658746685] [2024-11-09 02:40:23,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658746685] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:40:23,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053137821] [2024-11-09 02:40:23,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:23,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:40:23,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:40:23,836 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) [2024-11-09 02:40:23,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:40:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:24,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:40:24,006 INFO L278 TraceCheckSpWp]: Computing forward predicates...