./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.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 b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:44:33,460 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:44:33,522 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:44:33,525 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:44:33,526 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:44:33,550 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:44:33,551 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:44:33,552 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:44:33,552 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:44:33,554 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:44:33,554 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:44:33,554 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:44:33,555 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:44:33,556 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:44:33,556 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:44:33,556 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:44:33,557 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:44:33,557 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:44:33,557 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:44:33,557 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:44:33,558 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:44:33,558 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:44:33,559 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:44:33,559 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:44:33,559 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:44:33,560 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:44:33,561 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:44:33,562 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:44:33,562 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:44:33,562 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:44:33,562 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:44:33,562 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:44:33,562 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:44:33,563 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:44:33,563 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:44:33,563 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:44:33,563 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:44:33,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:44:33,563 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:44:33,564 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:44:33,564 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:44:33,565 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:44:33,565 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a [2024-11-19 01:44:33,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:44:33,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:44:33,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:44:33,801 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:44:33,801 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:44:33,802 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2024-11-19 01:44:35,106 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:44:35,294 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:44:35,295 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2024-11-19 01:44:35,301 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60f14f435/76aa783208dd405aab5864985cda209e/FLAG04220bebe [2024-11-19 01:44:35,310 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60f14f435/76aa783208dd405aab5864985cda209e [2024-11-19 01:44:35,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:44:35,313 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:44:35,314 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:44:35,314 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:44:35,323 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:44:35,324 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,324 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b622b8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35, skipping insertion in model container [2024-11-19 01:44:35,324 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,342 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:44:35,491 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c[2592,2605] [2024-11-19 01:44:35,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:44:35,503 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:44:35,526 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c[2592,2605] [2024-11-19 01:44:35,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:44:35,542 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:44:35,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35 WrapperNode [2024-11-19 01:44:35,542 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:44:35,543 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:44:35,543 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:44:35,543 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:44:35,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,559 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,580 INFO L138 Inliner]: procedures = 23, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 169 [2024-11-19 01:44:35,582 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:44:35,583 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:44:35,583 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:44:35,583 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:44:35,591 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,594 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,611 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-19 01:44:35,615 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,615 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,650 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,658 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,659 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,660 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,665 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:44:35,685 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:44:35,690 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:44:35,690 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:44:35,691 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:44:35,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:35,729 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) [2024-11-19 01:44:35,731 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 [2024-11-19 01:44:35,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:44:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:44:35,766 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:44:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:44:35,766 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:44:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:44:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:44:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:44:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:44:35,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 01:44:35,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:44:35,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:44:35,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:44:35,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:44:35,768 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:44:35,884 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:44:35,886 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:44:36,192 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:44:36,192 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:44:36,340 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:44:36,341 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 01:44:36,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:44:36 BoogieIcfgContainer [2024-11-19 01:44:36,341 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:44:36,342 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:44:36,342 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:44:36,345 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:44:36,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:44:35" (1/3) ... [2024-11-19 01:44:36,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7549c50c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:44:36, skipping insertion in model container [2024-11-19 01:44:36,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (2/3) ... [2024-11-19 01:44:36,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7549c50c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:44:36, skipping insertion in model container [2024-11-19 01:44:36,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:44:36" (3/3) ... [2024-11-19 01:44:36,346 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2024-11-19 01:44:36,358 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:44:36,359 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:44:36,359 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:44:36,401 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 01:44:36,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 70 flow [2024-11-19 01:44:36,496 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2024-11-19 01:44:36,496 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:44:36,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 6/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2024-11-19 01:44:36,498 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 28 transitions, 70 flow [2024-11-19 01:44:36,507 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 25 transitions, 62 flow [2024-11-19 01:44:36,522 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:44:36,535 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;@2fd7b79a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:44:36,535 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-19 01:44:36,548 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:44:36,548 INFO L124 PetriNetUnfolderBase]: 6/24 cut-off events. [2024-11-19 01:44:36,548 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:44:36,548 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:36,548 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:36,549 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:36,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:36,559 INFO L85 PathProgramCache]: Analyzing trace with hash -863716002, now seen corresponding path program 1 times [2024-11-19 01:44:36,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:36,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055682515] [2024-11-19 01:44:36,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:36,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:36,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:36,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:36,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055682515] [2024-11-19 01:44:36,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055682515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:36,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:36,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:44:36,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961659639] [2024-11-19 01:44:36,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:36,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:44:36,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:36,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:44:36,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:44:36,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:36,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2024-11-19 01:44:36,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:36,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:36,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:37,102 INFO L124 PetriNetUnfolderBase]: 237/396 cut-off events. [2024-11-19 01:44:37,102 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-19 01:44:37,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 396 events. 237/396 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1432 event pairs, 68 based on Foata normal form. 5/301 useless extension candidates. Maximal degree in co-relation 720. Up to 183 conditions per place. [2024-11-19 01:44:37,108 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 46 selfloop transitions, 5 changer transitions 2/54 dead transitions. [2024-11-19 01:44:37,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 54 transitions, 244 flow [2024-11-19 01:44:37,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:44:37,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:44:37,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2024-11-19 01:44:37,116 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-11-19 01:44:37,118 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 62 flow. Second operand 5 states and 69 transitions. [2024-11-19 01:44:37,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 54 transitions, 244 flow [2024-11-19 01:44:37,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 54 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 01:44:37,122 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 78 flow [2024-11-19 01:44:37,123 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=78, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2024-11-19 01:44:37,126 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2024-11-19 01:44:37,126 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 78 flow [2024-11-19 01:44:37,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2024-11-19 01:44:37,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:37,126 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:37,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:44:37,127 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:37,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:37,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1019207930, now seen corresponding path program 2 times [2024-11-19 01:44:37,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:37,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275079023] [2024-11-19 01:44:37,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:44:37,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:37,143 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:44:37,143 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:37,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:37,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:37,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275079023] [2024-11-19 01:44:37,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275079023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:37,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:37,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:44:37,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353464927] [2024-11-19 01:44:37,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:37,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:44:37,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:37,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:44:37,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:44:37,194 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:37,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2024-11-19 01:44:37,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:37,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:37,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:37,342 INFO L124 PetriNetUnfolderBase]: 461/788 cut-off events. [2024-11-19 01:44:37,343 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2024-11-19 01:44:37,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1770 conditions, 788 events. 461/788 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3348 event pairs, 176 based on Foata normal form. 4/691 useless extension candidates. Maximal degree in co-relation 614. Up to 395 conditions per place. [2024-11-19 01:44:37,350 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 50 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-11-19 01:44:37,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 56 transitions, 275 flow [2024-11-19 01:44:37,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:44:37,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:44:37,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2024-11-19 01:44:37,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-19 01:44:37,353 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 78 flow. Second operand 5 states and 65 transitions. [2024-11-19 01:44:37,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 56 transitions, 275 flow [2024-11-19 01:44:37,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 56 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:44:37,354 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 96 flow [2024-11-19 01:44:37,354 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=96, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2024-11-19 01:44:37,356 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2024-11-19 01:44:37,357 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 96 flow [2024-11-19 01:44:37,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2024-11-19 01:44:37,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:37,357 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:37,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:44:37,357 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:37,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:37,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1072340398, now seen corresponding path program 3 times [2024-11-19 01:44:37,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:37,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679016451] [2024-11-19 01:44:37,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:44:37,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:37,380 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:44:37,383 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:37,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:37,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:37,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679016451] [2024-11-19 01:44:37,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679016451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:37,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:37,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:44:37,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005125786] [2024-11-19 01:44:37,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:37,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:44:37,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:37,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:44:37,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:44:37,445 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:37,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2024-11-19 01:44:37,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:37,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:37,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:37,593 INFO L124 PetriNetUnfolderBase]: 601/1029 cut-off events. [2024-11-19 01:44:37,593 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2024-11-19 01:44:37,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2503 conditions, 1029 events. 601/1029 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4708 event pairs, 207 based on Foata normal form. 23/1051 useless extension candidates. Maximal degree in co-relation 885. Up to 766 conditions per place. [2024-11-19 01:44:37,598 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 45 selfloop transitions, 4 changer transitions 2/52 dead transitions. [2024-11-19 01:44:37,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 52 transitions, 273 flow [2024-11-19 01:44:37,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:44:37,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:44:37,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-11-19 01:44:37,600 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-11-19 01:44:37,600 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 96 flow. Second operand 4 states and 58 transitions. [2024-11-19 01:44:37,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 52 transitions, 273 flow [2024-11-19 01:44:37,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 52 transitions, 265 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:44:37,602 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 134 flow [2024-11-19 01:44:37,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2024-11-19 01:44:37,603 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2024-11-19 01:44:37,603 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 134 flow [2024-11-19 01:44:37,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2024-11-19 01:44:37,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:37,604 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:37,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:44:37,604 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:37,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:37,605 INFO L85 PathProgramCache]: Analyzing trace with hash 921043552, now seen corresponding path program 4 times [2024-11-19 01:44:37,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:37,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66333953] [2024-11-19 01:44:37,605 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:44:37,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:37,614 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:44:37,614 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:37,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:37,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:37,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66333953] [2024-11-19 01:44:37,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66333953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:37,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:37,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:44:37,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170387048] [2024-11-19 01:44:37,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:37,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:44:37,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:37,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:44:37,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:44:37,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:37,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2024-11-19 01:44:37,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:37,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:37,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:37,784 INFO L124 PetriNetUnfolderBase]: 620/1051 cut-off events. [2024-11-19 01:44:37,784 INFO L125 PetriNetUnfolderBase]: For 781/781 co-relation queries the response was YES. [2024-11-19 01:44:37,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2716 conditions, 1051 events. 620/1051 cut-off events. For 781/781 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4721 event pairs, 254 based on Foata normal form. 20/1069 useless extension candidates. Maximal degree in co-relation 1537. Up to 778 conditions per place. [2024-11-19 01:44:37,790 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 47 selfloop transitions, 6 changer transitions 3/57 dead transitions. [2024-11-19 01:44:37,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 57 transitions, 336 flow [2024-11-19 01:44:37,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:44:37,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:44:37,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2024-11-19 01:44:37,791 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-11-19 01:44:37,791 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 134 flow. Second operand 4 states and 59 transitions. [2024-11-19 01:44:37,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 57 transitions, 336 flow [2024-11-19 01:44:37,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 336 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 01:44:37,794 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 194 flow [2024-11-19 01:44:37,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-11-19 01:44:37,795 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2024-11-19 01:44:37,795 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 194 flow [2024-11-19 01:44:37,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2024-11-19 01:44:37,796 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:37,796 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:37,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:44:37,796 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:37,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:37,797 INFO L85 PathProgramCache]: Analyzing trace with hash -486151816, now seen corresponding path program 1 times [2024-11-19 01:44:37,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:37,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72693236] [2024-11-19 01:44:37,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:37,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:37,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:37,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:37,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72693236] [2024-11-19 01:44:37,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72693236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:37,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:37,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:44:37,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173337737] [2024-11-19 01:44:37,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:37,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:44:37,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:37,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:44:37,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:44:37,850 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:37,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2024-11-19 01:44:37,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:37,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:37,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:37,970 INFO L124 PetriNetUnfolderBase]: 559/944 cut-off events. [2024-11-19 01:44:37,970 INFO L125 PetriNetUnfolderBase]: For 1152/1152 co-relation queries the response was YES. [2024-11-19 01:44:37,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2640 conditions, 944 events. 559/944 cut-off events. For 1152/1152 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4241 event pairs, 183 based on Foata normal form. 16/958 useless extension candidates. Maximal degree in co-relation 937. Up to 479 conditions per place. [2024-11-19 01:44:37,974 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 56 selfloop transitions, 8 changer transitions 3/68 dead transitions. [2024-11-19 01:44:37,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 68 transitions, 447 flow [2024-11-19 01:44:37,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:44:37,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:44:37,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-11-19 01:44:37,976 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-11-19 01:44:37,976 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 194 flow. Second operand 4 states and 66 transitions. [2024-11-19 01:44:37,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 68 transitions, 447 flow [2024-11-19 01:44:37,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 68 transitions, 441 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-19 01:44:37,979 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 210 flow [2024-11-19 01:44:37,979 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-11-19 01:44:37,980 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2024-11-19 01:44:37,980 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 210 flow [2024-11-19 01:44:37,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2024-11-19 01:44:37,980 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:37,980 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:37,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:44:37,981 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:37,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:37,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1435951390, now seen corresponding path program 1 times [2024-11-19 01:44:37,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:37,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785678729] [2024-11-19 01:44:37,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:37,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:38,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:38,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:38,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785678729] [2024-11-19 01:44:38,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785678729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:38,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:38,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:44:38,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538201585] [2024-11-19 01:44:38,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:38,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:44:38,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:38,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:44:38,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:44:38,040 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:38,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2024-11-19 01:44:38,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:38,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:38,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:38,149 INFO L124 PetriNetUnfolderBase]: 497/831 cut-off events. [2024-11-19 01:44:38,151 INFO L125 PetriNetUnfolderBase]: For 1391/1391 co-relation queries the response was YES. [2024-11-19 01:44:38,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2448 conditions, 831 events. 497/831 cut-off events. For 1391/1391 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3428 event pairs, 183 based on Foata normal form. 18/847 useless extension candidates. Maximal degree in co-relation 2284. Up to 441 conditions per place. [2024-11-19 01:44:38,155 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 52 selfloop transitions, 8 changer transitions 2/63 dead transitions. [2024-11-19 01:44:38,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 63 transitions, 447 flow [2024-11-19 01:44:38,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:44:38,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:44:38,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-11-19 01:44:38,157 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-11-19 01:44:38,157 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 210 flow. Second operand 4 states and 62 transitions. [2024-11-19 01:44:38,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 63 transitions, 447 flow [2024-11-19 01:44:38,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 63 transitions, 421 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-19 01:44:38,160 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 214 flow [2024-11-19 01:44:38,160 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-11-19 01:44:38,161 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2024-11-19 01:44:38,161 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 214 flow [2024-11-19 01:44:38,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2024-11-19 01:44:38,161 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:38,161 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:38,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:44:38,161 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:38,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:38,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1602538200, now seen corresponding path program 1 times [2024-11-19 01:44:38,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:38,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239167850] [2024-11-19 01:44:38,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:38,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:38,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:38,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:38,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239167850] [2024-11-19 01:44:38,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239167850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:38,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:38,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:44:38,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14956702] [2024-11-19 01:44:38,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:38,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:44:38,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:38,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:44:38,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:44:38,254 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:38,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-11-19 01:44:38,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:38,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:38,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:38,327 INFO L124 PetriNetUnfolderBase]: 495/827 cut-off events. [2024-11-19 01:44:38,327 INFO L125 PetriNetUnfolderBase]: For 1280/1280 co-relation queries the response was YES. [2024-11-19 01:44:38,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2507 conditions, 827 events. 495/827 cut-off events. For 1280/1280 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3422 event pairs, 328 based on Foata normal form. 0/825 useless extension candidates. Maximal degree in co-relation 2325. Up to 819 conditions per place. [2024-11-19 01:44:38,331 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 34 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2024-11-19 01:44:38,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 294 flow [2024-11-19 01:44:38,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:44:38,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:44:38,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2024-11-19 01:44:38,334 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-11-19 01:44:38,334 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 214 flow. Second operand 3 states and 37 transitions. [2024-11-19 01:44:38,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 294 flow [2024-11-19 01:44:38,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 282 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-19 01:44:38,336 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 224 flow [2024-11-19 01:44:38,336 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-11-19 01:44:38,336 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 19 predicate places. [2024-11-19 01:44:38,336 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 224 flow [2024-11-19 01:44:38,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-11-19 01:44:38,336 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:38,337 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] [2024-11-19 01:44:38,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:44:38,337 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:38,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:38,338 INFO L85 PathProgramCache]: Analyzing trace with hash -168502724, now seen corresponding path program 1 times [2024-11-19 01:44:38,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:38,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017031589] [2024-11-19 01:44:38,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:38,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:38,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:38,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:38,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017031589] [2024-11-19 01:44:38,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017031589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:38,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255123941] [2024-11-19 01:44:38,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:38,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:38,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:38,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:44:38,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:44:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:38,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 01:44:38,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:44:38,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:38,512 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:44:38,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:38,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255123941] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:44:38,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:44:38,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-19 01:44:38,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971066556] [2024-11-19 01:44:38,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:44:38,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:44:38,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:38,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:44:38,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:44:38,532 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:38,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 224 flow. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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) [2024-11-19 01:44:38,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:38,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:38,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:38,634 INFO L124 PetriNetUnfolderBase]: 495/833 cut-off events. [2024-11-19 01:44:38,634 INFO L125 PetriNetUnfolderBase]: For 1059/1059 co-relation queries the response was YES. [2024-11-19 01:44:38,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2474 conditions, 833 events. 495/833 cut-off events. For 1059/1059 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3411 event pairs, 328 based on Foata normal form. 3/835 useless extension candidates. Maximal degree in co-relation 2434. Up to 819 conditions per place. [2024-11-19 01:44:38,637 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 34 selfloop transitions, 10 changer transitions 0/45 dead transitions. [2024-11-19 01:44:38,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 45 transitions, 336 flow [2024-11-19 01:44:38,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:44:38,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:44:38,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 56 transitions. [2024-11-19 01:44:38,638 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-11-19 01:44:38,638 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 224 flow. Second operand 6 states and 56 transitions. [2024-11-19 01:44:38,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 45 transitions, 336 flow [2024-11-19 01:44:38,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:44:38,640 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 286 flow [2024-11-19 01:44:38,641 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-11-19 01:44:38,641 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2024-11-19 01:44:38,641 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 286 flow [2024-11-19 01:44:38,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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) [2024-11-19 01:44:38,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:38,642 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:38,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:44:38,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:38,843 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:38,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:38,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1918512510, now seen corresponding path program 2 times [2024-11-19 01:44:38,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:38,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217375810] [2024-11-19 01:44:38,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:44:38,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:38,881 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:44:38,881 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:39,421 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-19 01:44:39,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:39,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217375810] [2024-11-19 01:44:39,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217375810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:39,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:39,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 01:44:39,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522063183] [2024-11-19 01:44:39,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:39,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:44:39,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:39,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:44:39,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:44:39,424 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:39,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 286 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:39,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:39,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:39,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:40,132 INFO L124 PetriNetUnfolderBase]: 822/1434 cut-off events. [2024-11-19 01:44:40,133 INFO L125 PetriNetUnfolderBase]: For 1801/1801 co-relation queries the response was YES. [2024-11-19 01:44:40,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4156 conditions, 1434 events. 822/1434 cut-off events. For 1801/1801 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7265 event pairs, 73 based on Foata normal form. 3/1436 useless extension candidates. Maximal degree in co-relation 4085. Up to 280 conditions per place. [2024-11-19 01:44:40,138 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 126 selfloop transitions, 59 changer transitions 8/194 dead transitions. [2024-11-19 01:44:40,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 194 transitions, 1277 flow [2024-11-19 01:44:40,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 01:44:40,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-19 01:44:40,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 222 transitions. [2024-11-19 01:44:40,140 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37755102040816324 [2024-11-19 01:44:40,140 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 286 flow. Second operand 21 states and 222 transitions. [2024-11-19 01:44:40,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 194 transitions, 1277 flow [2024-11-19 01:44:40,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 194 transitions, 1261 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-19 01:44:40,145 INFO L231 Difference]: Finished difference. Result has 80 places, 95 transitions, 755 flow [2024-11-19 01:44:40,145 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=755, PETRI_PLACES=80, PETRI_TRANSITIONS=95} [2024-11-19 01:44:40,146 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 54 predicate places. [2024-11-19 01:44:40,146 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 95 transitions, 755 flow [2024-11-19 01:44:40,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:40,146 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:40,146 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:40,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 01:44:40,147 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:40,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:40,147 INFO L85 PathProgramCache]: Analyzing trace with hash 831101504, now seen corresponding path program 3 times [2024-11-19 01:44:40,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:40,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401193974] [2024-11-19 01:44:40,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:44:40,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:40,178 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:44:40,179 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:40,582 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-19 01:44:40,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:40,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401193974] [2024-11-19 01:44:40,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401193974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:40,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:40,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 01:44:40,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807578252] [2024-11-19 01:44:40,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:40,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:44:40,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:40,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:44:40,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:44:40,584 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:40,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 95 transitions, 755 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:40,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:40,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:40,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:41,484 INFO L124 PetriNetUnfolderBase]: 1297/2328 cut-off events. [2024-11-19 01:44:41,485 INFO L125 PetriNetUnfolderBase]: For 5997/5997 co-relation queries the response was YES. [2024-11-19 01:44:41,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8000 conditions, 2328 events. 1297/2328 cut-off events. For 5997/5997 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 13577 event pairs, 105 based on Foata normal form. 1/2328 useless extension candidates. Maximal degree in co-relation 7926. Up to 388 conditions per place. [2024-11-19 01:44:41,497 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 178 selfloop transitions, 85 changer transitions 8/272 dead transitions. [2024-11-19 01:44:41,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 272 transitions, 2247 flow [2024-11-19 01:44:41,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 01:44:41,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-19 01:44:41,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 271 transitions. [2024-11-19 01:44:41,499 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3871428571428571 [2024-11-19 01:44:41,499 INFO L175 Difference]: Start difference. First operand has 80 places, 95 transitions, 755 flow. Second operand 25 states and 271 transitions. [2024-11-19 01:44:41,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 272 transitions, 2247 flow [2024-11-19 01:44:41,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 272 transitions, 2099 flow, removed 65 selfloop flow, removed 4 redundant places. [2024-11-19 01:44:41,527 INFO L231 Difference]: Finished difference. Result has 110 places, 143 transitions, 1314 flow [2024-11-19 01:44:41,527 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1314, PETRI_PLACES=110, PETRI_TRANSITIONS=143} [2024-11-19 01:44:41,528 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 84 predicate places. [2024-11-19 01:44:41,529 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 143 transitions, 1314 flow [2024-11-19 01:44:41,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:41,529 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:41,529 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:41,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 01:44:41,530 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:41,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:41,530 INFO L85 PathProgramCache]: Analyzing trace with hash -644626634, now seen corresponding path program 4 times [2024-11-19 01:44:41,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:41,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080194769] [2024-11-19 01:44:41,530 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:44:41,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:41,552 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:44:41,553 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:41,836 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-19 01:44:41,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:41,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080194769] [2024-11-19 01:44:41,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080194769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:41,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:41,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 01:44:41,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365136750] [2024-11-19 01:44:41,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:41,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:44:41,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:41,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:44:41,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:44:41,837 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:41,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 143 transitions, 1314 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:41,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:41,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:41,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:42,716 INFO L124 PetriNetUnfolderBase]: 1407/2517 cut-off events. [2024-11-19 01:44:42,716 INFO L125 PetriNetUnfolderBase]: For 8337/8337 co-relation queries the response was YES. [2024-11-19 01:44:42,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9403 conditions, 2517 events. 1407/2517 cut-off events. For 8337/8337 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 14788 event pairs, 85 based on Foata normal form. 1/2517 useless extension candidates. Maximal degree in co-relation 9319. Up to 480 conditions per place. [2024-11-19 01:44:42,734 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 141 selfloop transitions, 118 changer transitions 8/268 dead transitions. [2024-11-19 01:44:42,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 268 transitions, 2450 flow [2024-11-19 01:44:42,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 01:44:42,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-19 01:44:42,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 256 transitions. [2024-11-19 01:44:42,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39751552795031053 [2024-11-19 01:44:42,736 INFO L175 Difference]: Start difference. First operand has 110 places, 143 transitions, 1314 flow. Second operand 23 states and 256 transitions. [2024-11-19 01:44:42,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 268 transitions, 2450 flow [2024-11-19 01:44:42,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 268 transitions, 2309 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-11-19 01:44:42,772 INFO L231 Difference]: Finished difference. Result has 127 places, 160 transitions, 1558 flow [2024-11-19 01:44:42,772 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1558, PETRI_PLACES=127, PETRI_TRANSITIONS=160} [2024-11-19 01:44:42,772 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 101 predicate places. [2024-11-19 01:44:42,772 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 160 transitions, 1558 flow [2024-11-19 01:44:42,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:42,773 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:42,773 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:42,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 01:44:42,773 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:42,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:42,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1697157572, now seen corresponding path program 5 times [2024-11-19 01:44:42,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:42,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676886659] [2024-11-19 01:44:42,774 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:44:42,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:42,788 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 01:44:42,788 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:42,842 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 01:44:42,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:42,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676886659] [2024-11-19 01:44:42,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676886659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:42,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73621437] [2024-11-19 01:44:42,843 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:44:42,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:42,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:42,844 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) [2024-11-19 01:44:42,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:44:42,930 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 01:44:42,931 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:42,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:44:42,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:44:42,971 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 01:44:42,972 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:44:42,997 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 01:44:42,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73621437] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:44:42,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:44:42,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-19 01:44:42,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886728681] [2024-11-19 01:44:42,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:44:42,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:44:42,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:42,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:44:42,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:44:42,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:42,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 160 transitions, 1558 flow. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 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) [2024-11-19 01:44:42,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:42,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:42,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:43,275 INFO L124 PetriNetUnfolderBase]: 1397/2498 cut-off events. [2024-11-19 01:44:43,275 INFO L125 PetriNetUnfolderBase]: For 8007/8007 co-relation queries the response was YES. [2024-11-19 01:44:43,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9770 conditions, 2498 events. 1397/2498 cut-off events. For 8007/8007 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 14788 event pairs, 882 based on Foata normal form. 1/2498 useless extension candidates. Maximal degree in co-relation 9678. Up to 2459 conditions per place. [2024-11-19 01:44:43,288 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 149 selfloop transitions, 12 changer transitions 0/162 dead transitions. [2024-11-19 01:44:43,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 162 transitions, 1892 flow [2024-11-19 01:44:43,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:44:43,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:44:43,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 57 transitions. [2024-11-19 01:44:43,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29081632653061223 [2024-11-19 01:44:43,289 INFO L175 Difference]: Start difference. First operand has 127 places, 160 transitions, 1558 flow. Second operand 7 states and 57 transitions. [2024-11-19 01:44:43,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 162 transitions, 1892 flow [2024-11-19 01:44:43,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 162 transitions, 1796 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-11-19 01:44:43,327 INFO L231 Difference]: Finished difference. Result has 122 places, 162 transitions, 1508 flow [2024-11-19 01:44:43,327 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1462, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1508, PETRI_PLACES=122, PETRI_TRANSITIONS=162} [2024-11-19 01:44:43,331 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 96 predicate places. [2024-11-19 01:44:43,331 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 162 transitions, 1508 flow [2024-11-19 01:44:43,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 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) [2024-11-19 01:44:43,332 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:43,332 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:43,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 01:44:43,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-19 01:44:43,533 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:43,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:43,533 INFO L85 PathProgramCache]: Analyzing trace with hash 484261756, now seen corresponding path program 6 times [2024-11-19 01:44:43,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:43,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435790771] [2024-11-19 01:44:43,533 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:44:43,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:43,561 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-19 01:44:43,562 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:44,026 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:44:44,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:44,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435790771] [2024-11-19 01:44:44,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435790771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:44,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:44,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 01:44:44,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954117476] [2024-11-19 01:44:44,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:44,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:44:44,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:44,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:44:44,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:44:44,029 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:44,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 162 transitions, 1508 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:44,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:44,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:44,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:45,006 INFO L124 PetriNetUnfolderBase]: 1556/2777 cut-off events. [2024-11-19 01:44:45,006 INFO L125 PetriNetUnfolderBase]: For 8679/8679 co-relation queries the response was YES. [2024-11-19 01:44:45,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10644 conditions, 2777 events. 1556/2777 cut-off events. For 8679/8679 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 16850 event pairs, 188 based on Foata normal form. 1/2778 useless extension candidates. Maximal degree in co-relation 10542. Up to 536 conditions per place. [2024-11-19 01:44:45,018 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 171 selfloop transitions, 120 changer transitions 10/302 dead transitions. [2024-11-19 01:44:45,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 302 transitions, 2821 flow [2024-11-19 01:44:45,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-19 01:44:45,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-19 01:44:45,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 276 transitions. [2024-11-19 01:44:45,020 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3791208791208791 [2024-11-19 01:44:45,020 INFO L175 Difference]: Start difference. First operand has 122 places, 162 transitions, 1508 flow. Second operand 26 states and 276 transitions. [2024-11-19 01:44:45,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 302 transitions, 2821 flow [2024-11-19 01:44:45,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 302 transitions, 2797 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-19 01:44:45,055 INFO L231 Difference]: Finished difference. Result has 152 places, 180 transitions, 2051 flow [2024-11-19 01:44:45,056 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1484, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2051, PETRI_PLACES=152, PETRI_TRANSITIONS=180} [2024-11-19 01:44:45,056 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 126 predicate places. [2024-11-19 01:44:45,056 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 180 transitions, 2051 flow [2024-11-19 01:44:45,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:45,056 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:45,056 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:45,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 01:44:45,057 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:45,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:45,057 INFO L85 PathProgramCache]: Analyzing trace with hash -180405476, now seen corresponding path program 7 times [2024-11-19 01:44:45,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:45,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015981986] [2024-11-19 01:44:45,057 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:44:45,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:45,608 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:44:45,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:45,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015981986] [2024-11-19 01:44:45,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015981986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:45,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:45,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 01:44:45,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122414974] [2024-11-19 01:44:45,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:45,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:44:45,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:45,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:44:45,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:44:45,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:45,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 180 transitions, 2051 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:45,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:45,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:45,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:46,492 INFO L124 PetriNetUnfolderBase]: 1801/3228 cut-off events. [2024-11-19 01:44:46,492 INFO L125 PetriNetUnfolderBase]: For 14949/14949 co-relation queries the response was YES. [2024-11-19 01:44:46,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13887 conditions, 3228 events. 1801/3228 cut-off events. For 14949/14949 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 20410 event pairs, 197 based on Foata normal form. 1/3229 useless extension candidates. Maximal degree in co-relation 13786. Up to 674 conditions per place. [2024-11-19 01:44:46,509 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 190 selfloop transitions, 120 changer transitions 8/319 dead transitions. [2024-11-19 01:44:46,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 319 transitions, 3705 flow [2024-11-19 01:44:46,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 01:44:46,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-19 01:44:46,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 232 transitions. [2024-11-19 01:44:46,510 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3945578231292517 [2024-11-19 01:44:46,510 INFO L175 Difference]: Start difference. First operand has 152 places, 180 transitions, 2051 flow. Second operand 21 states and 232 transitions. [2024-11-19 01:44:46,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 319 transitions, 3705 flow [2024-11-19 01:44:46,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 319 transitions, 3530 flow, removed 46 selfloop flow, removed 12 redundant places. [2024-11-19 01:44:46,574 INFO L231 Difference]: Finished difference. Result has 171 places, 221 transitions, 2825 flow [2024-11-19 01:44:46,575 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1940, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2825, PETRI_PLACES=171, PETRI_TRANSITIONS=221} [2024-11-19 01:44:46,575 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 145 predicate places. [2024-11-19 01:44:46,575 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 221 transitions, 2825 flow [2024-11-19 01:44:46,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:46,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:46,575 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:46,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 01:44:46,576 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:46,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:46,576 INFO L85 PathProgramCache]: Analyzing trace with hash 156416266, now seen corresponding path program 8 times [2024-11-19 01:44:46,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:46,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230175484] [2024-11-19 01:44:46,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:44:46,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:46,601 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:44:46,601 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:46,873 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:44:46,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:46,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230175484] [2024-11-19 01:44:46,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230175484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:46,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:46,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 01:44:46,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129457166] [2024-11-19 01:44:46,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:46,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:44:46,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:46,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:44:46,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:44:46,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:46,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 221 transitions, 2825 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:46,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:46,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:46,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:47,976 INFO L124 PetriNetUnfolderBase]: 1841/3310 cut-off events. [2024-11-19 01:44:47,976 INFO L125 PetriNetUnfolderBase]: For 17773/17773 co-relation queries the response was YES. [2024-11-19 01:44:47,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15046 conditions, 3310 events. 1841/3310 cut-off events. For 17773/17773 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 21017 event pairs, 200 based on Foata normal form. 1/3311 useless extension candidates. Maximal degree in co-relation 14934. Up to 784 conditions per place. [2024-11-19 01:44:47,996 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 185 selfloop transitions, 153 changer transitions 8/347 dead transitions. [2024-11-19 01:44:47,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 347 transitions, 4174 flow [2024-11-19 01:44:47,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 01:44:47,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-19 01:44:47,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 283 transitions. [2024-11-19 01:44:47,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4042857142857143 [2024-11-19 01:44:47,997 INFO L175 Difference]: Start difference. First operand has 171 places, 221 transitions, 2825 flow. Second operand 25 states and 283 transitions. [2024-11-19 01:44:47,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 347 transitions, 4174 flow [2024-11-19 01:44:48,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 347 transitions, 4027 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-11-19 01:44:48,120 INFO L231 Difference]: Finished difference. Result has 198 places, 236 transitions, 3288 flow [2024-11-19 01:44:48,121 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2725, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3288, PETRI_PLACES=198, PETRI_TRANSITIONS=236} [2024-11-19 01:44:48,121 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 172 predicate places. [2024-11-19 01:44:48,121 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 236 transitions, 3288 flow [2024-11-19 01:44:48,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:48,121 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:48,122 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:48,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 01:44:48,122 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:48,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:48,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1120903812, now seen corresponding path program 9 times [2024-11-19 01:44:48,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:48,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413509830] [2024-11-19 01:44:48,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:44:48,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:48,138 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:44:48,142 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:48,705 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:44:48,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:48,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413509830] [2024-11-19 01:44:48,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413509830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:48,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:48,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 01:44:48,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928803897] [2024-11-19 01:44:48,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:48,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:44:48,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:48,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:44:48,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:44:48,707 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:48,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 236 transitions, 3288 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:48,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:48,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:48,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:49,492 INFO L124 PetriNetUnfolderBase]: 1861/3341 cut-off events. [2024-11-19 01:44:49,493 INFO L125 PetriNetUnfolderBase]: For 20221/20221 co-relation queries the response was YES. [2024-11-19 01:44:49,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15900 conditions, 3341 events. 1861/3341 cut-off events. For 20221/20221 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 21295 event pairs, 263 based on Foata normal form. 1/3342 useless extension candidates. Maximal degree in co-relation 15781. Up to 785 conditions per place. [2024-11-19 01:44:49,514 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 169 selfloop transitions, 143 changer transitions 7/320 dead transitions. [2024-11-19 01:44:49,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 320 transitions, 4309 flow [2024-11-19 01:44:49,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 01:44:49,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-19 01:44:49,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 219 transitions. [2024-11-19 01:44:49,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39107142857142857 [2024-11-19 01:44:49,516 INFO L175 Difference]: Start difference. First operand has 198 places, 236 transitions, 3288 flow. Second operand 20 states and 219 transitions. [2024-11-19 01:44:49,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 320 transitions, 4309 flow [2024-11-19 01:44:49,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 320 transitions, 4116 flow, removed 24 selfloop flow, removed 11 redundant places. [2024-11-19 01:44:49,581 INFO L231 Difference]: Finished difference. Result has 209 places, 240 transitions, 3496 flow [2024-11-19 01:44:49,581 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3111, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3496, PETRI_PLACES=209, PETRI_TRANSITIONS=240} [2024-11-19 01:44:49,582 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 183 predicate places. [2024-11-19 01:44:49,582 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 240 transitions, 3496 flow [2024-11-19 01:44:49,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:49,582 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:49,582 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:49,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 01:44:49,582 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:49,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:49,583 INFO L85 PathProgramCache]: Analyzing trace with hash 685650592, now seen corresponding path program 10 times [2024-11-19 01:44:49,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:49,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374406016] [2024-11-19 01:44:49,583 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:44:49,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:49,594 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:44:49,594 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:49,720 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:44:49,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:49,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374406016] [2024-11-19 01:44:49,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374406016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:49,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:49,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 01:44:49,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360802949] [2024-11-19 01:44:49,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:49,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:44:49,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:49,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:44:49,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:44:49,722 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:49,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 240 transitions, 3496 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:49,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:49,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:49,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:50,630 INFO L124 PetriNetUnfolderBase]: 1864/3348 cut-off events. [2024-11-19 01:44:50,630 INFO L125 PetriNetUnfolderBase]: For 20389/20389 co-relation queries the response was YES. [2024-11-19 01:44:50,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16354 conditions, 3348 events. 1864/3348 cut-off events. For 20389/20389 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 21304 event pairs, 129 based on Foata normal form. 1/3349 useless extension candidates. Maximal degree in co-relation 16236. Up to 708 conditions per place. [2024-11-19 01:44:50,647 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 186 selfloop transitions, 144 changer transitions 8/339 dead transitions. [2024-11-19 01:44:50,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 339 transitions, 4672 flow [2024-11-19 01:44:50,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 01:44:50,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-19 01:44:50,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 236 transitions. [2024-11-19 01:44:50,648 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42142857142857143 [2024-11-19 01:44:50,648 INFO L175 Difference]: Start difference. First operand has 209 places, 240 transitions, 3496 flow. Second operand 20 states and 236 transitions. [2024-11-19 01:44:50,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 339 transitions, 4672 flow [2024-11-19 01:44:50,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 339 transitions, 4460 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-11-19 01:44:50,725 INFO L231 Difference]: Finished difference. Result has 216 places, 241 transitions, 3615 flow [2024-11-19 01:44:50,725 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3303, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3615, PETRI_PLACES=216, PETRI_TRANSITIONS=241} [2024-11-19 01:44:50,725 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 190 predicate places. [2024-11-19 01:44:50,726 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 241 transitions, 3615 flow [2024-11-19 01:44:50,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:50,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:50,727 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:50,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 01:44:50,728 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:50,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:50,728 INFO L85 PathProgramCache]: Analyzing trace with hash 711426076, now seen corresponding path program 11 times [2024-11-19 01:44:50,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:50,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620314782] [2024-11-19 01:44:50,728 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:44:50,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:50,767 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 01:44:50,769 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:51,342 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-19 01:44:51,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:51,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620314782] [2024-11-19 01:44:51,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620314782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:51,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639914047] [2024-11-19 01:44:51,343 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:44:51,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:51,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:51,345 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:44:51,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:44:51,456 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 01:44:51,457 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:51,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 01:44:51,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:44:51,632 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-19 01:44:51,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 64 [2024-11-19 01:44:51,718 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:44:51,718 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:44:51,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639914047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:51,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:44:51,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 18 [2024-11-19 01:44:51,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382420437] [2024-11-19 01:44:51,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:51,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:44:51,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:51,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:44:51,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-11-19 01:44:51,720 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:51,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 241 transitions, 3615 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:51,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:51,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:51,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:52,366 INFO L124 PetriNetUnfolderBase]: 1851/3322 cut-off events. [2024-11-19 01:44:52,366 INFO L125 PetriNetUnfolderBase]: For 22862/22862 co-relation queries the response was YES. [2024-11-19 01:44:52,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16446 conditions, 3322 events. 1851/3322 cut-off events. For 22862/22862 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 21125 event pairs, 925 based on Foata normal form. 5/3327 useless extension candidates. Maximal degree in co-relation 16327. Up to 2227 conditions per place. [2024-11-19 01:44:52,389 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 205 selfloop transitions, 60 changer transitions 10/276 dead transitions. [2024-11-19 01:44:52,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 276 transitions, 4272 flow [2024-11-19 01:44:52,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:44:52,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:44:52,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-11-19 01:44:52,390 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-19 01:44:52,390 INFO L175 Difference]: Start difference. First operand has 216 places, 241 transitions, 3615 flow. Second operand 9 states and 112 transitions. [2024-11-19 01:44:52,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 276 transitions, 4272 flow [2024-11-19 01:44:52,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 276 transitions, 3971 flow, removed 4 selfloop flow, removed 18 redundant places. [2024-11-19 01:44:52,505 INFO L231 Difference]: Finished difference. Result has 206 places, 237 transitions, 3385 flow [2024-11-19 01:44:52,505 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3300, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3385, PETRI_PLACES=206, PETRI_TRANSITIONS=237} [2024-11-19 01:44:52,505 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 180 predicate places. [2024-11-19 01:44:52,505 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 237 transitions, 3385 flow [2024-11-19 01:44:52,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:52,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:52,506 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:52,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 01:44:52,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 01:44:52,710 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:52,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:52,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1220880394, now seen corresponding path program 12 times [2024-11-19 01:44:52,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:52,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786535428] [2024-11-19 01:44:52,711 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:44:52,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:52,729 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-19 01:44:52,732 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:53,018 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:44:53,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:53,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786535428] [2024-11-19 01:44:53,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786535428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:53,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:53,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 01:44:53,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599418912] [2024-11-19 01:44:53,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:53,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:44:53,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:53,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:44:53,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:44:53,021 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:53,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 237 transitions, 3385 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:53,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:53,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:53,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:54,073 INFO L124 PetriNetUnfolderBase]: 1836/3286 cut-off events. [2024-11-19 01:44:54,073 INFO L125 PetriNetUnfolderBase]: For 20428/20428 co-relation queries the response was YES. [2024-11-19 01:44:54,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15688 conditions, 3286 events. 1836/3286 cut-off events. For 20428/20428 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 20756 event pairs, 154 based on Foata normal form. 1/3287 useless extension candidates. Maximal degree in co-relation 15570. Up to 703 conditions per place. [2024-11-19 01:44:54,091 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 154 selfloop transitions, 175 changer transitions 7/337 dead transitions. [2024-11-19 01:44:54,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 337 transitions, 4493 flow [2024-11-19 01:44:54,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 01:44:54,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-19 01:44:54,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 259 transitions. [2024-11-19 01:44:54,095 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-11-19 01:44:54,095 INFO L175 Difference]: Start difference. First operand has 206 places, 237 transitions, 3385 flow. Second operand 24 states and 259 transitions. [2024-11-19 01:44:54,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 337 transitions, 4493 flow [2024-11-19 01:44:54,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 337 transitions, 4341 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-11-19 01:44:54,163 INFO L231 Difference]: Finished difference. Result has 218 places, 242 transitions, 3722 flow [2024-11-19 01:44:54,163 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3243, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3722, PETRI_PLACES=218, PETRI_TRANSITIONS=242} [2024-11-19 01:44:54,164 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 192 predicate places. [2024-11-19 01:44:54,164 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 242 transitions, 3722 flow [2024-11-19 01:44:54,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:54,164 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:54,164 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:54,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 01:44:54,165 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:54,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:54,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1509102896, now seen corresponding path program 13 times [2024-11-19 01:44:54,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:54,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459225820] [2024-11-19 01:44:54,165 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:44:54,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:54,665 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:44:54,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:54,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459225820] [2024-11-19 01:44:54,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459225820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:54,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:54,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 01:44:54,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105946865] [2024-11-19 01:44:54,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:54,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:44:54,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:54,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:44:54,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:44:54,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:54,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 242 transitions, 3722 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:54,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:54,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:54,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:55,667 INFO L124 PetriNetUnfolderBase]: 1985/3561 cut-off events. [2024-11-19 01:44:55,667 INFO L125 PetriNetUnfolderBase]: For 26558/26558 co-relation queries the response was YES. [2024-11-19 01:44:55,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17904 conditions, 3561 events. 1985/3561 cut-off events. For 26558/26558 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 22931 event pairs, 144 based on Foata normal form. 1/3562 useless extension candidates. Maximal degree in co-relation 17786. Up to 695 conditions per place. [2024-11-19 01:44:55,698 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 180 selfloop transitions, 216 changer transitions 7/404 dead transitions. [2024-11-19 01:44:55,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 404 transitions, 5839 flow [2024-11-19 01:44:55,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 01:44:55,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-19 01:44:55,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 269 transitions. [2024-11-19 01:44:55,701 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40029761904761907 [2024-11-19 01:44:55,701 INFO L175 Difference]: Start difference. First operand has 218 places, 242 transitions, 3722 flow. Second operand 24 states and 269 transitions. [2024-11-19 01:44:55,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 404 transitions, 5839 flow [2024-11-19 01:44:55,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 404 transitions, 5426 flow, removed 16 selfloop flow, removed 23 redundant places. [2024-11-19 01:44:55,789 INFO L231 Difference]: Finished difference. Result has 229 places, 293 transitions, 4824 flow [2024-11-19 01:44:55,789 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3401, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=4824, PETRI_PLACES=229, PETRI_TRANSITIONS=293} [2024-11-19 01:44:55,789 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 203 predicate places. [2024-11-19 01:44:55,790 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 293 transitions, 4824 flow [2024-11-19 01:44:55,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:55,790 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:55,790 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:55,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 01:44:55,790 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:55,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:55,791 INFO L85 PathProgramCache]: Analyzing trace with hash -107817026, now seen corresponding path program 14 times [2024-11-19 01:44:55,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:55,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537823936] [2024-11-19 01:44:55,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:44:55,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:55,806 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:44:55,807 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:56,165 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:44:56,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:56,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537823936] [2024-11-19 01:44:56,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537823936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:56,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:56,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 01:44:56,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901425616] [2024-11-19 01:44:56,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:56,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:44:56,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:56,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:44:56,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:44:56,168 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:56,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 293 transitions, 4824 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:56,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:56,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:56,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:57,236 INFO L124 PetriNetUnfolderBase]: 1980/3556 cut-off events. [2024-11-19 01:44:57,237 INFO L125 PetriNetUnfolderBase]: For 30733/30733 co-relation queries the response was YES. [2024-11-19 01:44:57,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18727 conditions, 3556 events. 1980/3556 cut-off events. For 30733/30733 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 22929 event pairs, 162 based on Foata normal form. 1/3557 useless extension candidates. Maximal degree in co-relation 18601. Up to 655 conditions per place. [2024-11-19 01:44:57,264 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 165 selfloop transitions, 230 changer transitions 7/403 dead transitions. [2024-11-19 01:44:57,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 403 transitions, 6159 flow [2024-11-19 01:44:57,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 01:44:57,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-19 01:44:57,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 269 transitions. [2024-11-19 01:44:57,266 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3842857142857143 [2024-11-19 01:44:57,266 INFO L175 Difference]: Start difference. First operand has 229 places, 293 transitions, 4824 flow. Second operand 25 states and 269 transitions. [2024-11-19 01:44:57,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 403 transitions, 6159 flow [2024-11-19 01:44:57,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 403 transitions, 5947 flow, removed 71 selfloop flow, removed 5 redundant places. [2024-11-19 01:44:57,382 INFO L231 Difference]: Finished difference. Result has 255 places, 301 transitions, 5286 flow [2024-11-19 01:44:57,383 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4653, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=5286, PETRI_PLACES=255, PETRI_TRANSITIONS=301} [2024-11-19 01:44:57,383 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 229 predicate places. [2024-11-19 01:44:57,383 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 301 transitions, 5286 flow [2024-11-19 01:44:57,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:57,383 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:57,383 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:57,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 01:44:57,384 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:57,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:57,384 INFO L85 PathProgramCache]: Analyzing trace with hash -643046828, now seen corresponding path program 15 times [2024-11-19 01:44:57,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:57,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829281225] [2024-11-19 01:44:57,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:44:57,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:57,400 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:44:57,400 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:57,759 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:44:57,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:57,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829281225] [2024-11-19 01:44:57,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829281225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:57,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:57,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 01:44:57,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475456137] [2024-11-19 01:44:57,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:57,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:44:57,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:57,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:44:57,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:44:57,763 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:57,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 301 transitions, 5286 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:57,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:57,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:57,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:58,729 INFO L124 PetriNetUnfolderBase]: 2068/3720 cut-off events. [2024-11-19 01:44:58,729 INFO L125 PetriNetUnfolderBase]: For 35853/35853 co-relation queries the response was YES. [2024-11-19 01:44:58,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20466 conditions, 3720 events. 2068/3720 cut-off events. For 35853/35853 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 24237 event pairs, 160 based on Foata normal form. 1/3721 useless extension candidates. Maximal degree in co-relation 20334. Up to 667 conditions per place. [2024-11-19 01:44:58,754 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 169 selfloop transitions, 240 changer transitions 7/417 dead transitions. [2024-11-19 01:44:58,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 417 transitions, 6769 flow [2024-11-19 01:44:58,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 01:44:58,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-19 01:44:58,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 278 transitions. [2024-11-19 01:44:58,756 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39714285714285713 [2024-11-19 01:44:58,756 INFO L175 Difference]: Start difference. First operand has 255 places, 301 transitions, 5286 flow. Second operand 25 states and 278 transitions. [2024-11-19 01:44:58,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 417 transitions, 6769 flow [2024-11-19 01:44:58,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 417 transitions, 6374 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-11-19 01:44:58,877 INFO L231 Difference]: Finished difference. Result has 272 places, 313 transitions, 5694 flow [2024-11-19 01:44:58,877 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4920, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=5694, PETRI_PLACES=272, PETRI_TRANSITIONS=313} [2024-11-19 01:44:58,878 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 246 predicate places. [2024-11-19 01:44:58,878 INFO L471 AbstractCegarLoop]: Abstraction has has 272 places, 313 transitions, 5694 flow [2024-11-19 01:44:58,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:58,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:58,878 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:58,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 01:44:58,878 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:44:58,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:58,878 INFO L85 PathProgramCache]: Analyzing trace with hash -25674046, now seen corresponding path program 16 times [2024-11-19 01:44:58,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:58,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100559380] [2024-11-19 01:44:58,879 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:44:58,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:58,889 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:44:58,889 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:59,066 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:44:59,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:59,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100559380] [2024-11-19 01:44:59,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100559380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:59,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:59,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 01:44:59,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231637207] [2024-11-19 01:44:59,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:59,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:44:59,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:59,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:44:59,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:44:59,067 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:44:59,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 313 transitions, 5694 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:59,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:59,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:44:59,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:00,400 INFO L124 PetriNetUnfolderBase]: 2427/4357 cut-off events. [2024-11-19 01:45:00,400 INFO L125 PetriNetUnfolderBase]: For 37604/37604 co-relation queries the response was YES. [2024-11-19 01:45:00,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24243 conditions, 4357 events. 2427/4357 cut-off events. For 37604/37604 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 29044 event pairs, 230 based on Foata normal form. 1/4358 useless extension candidates. Maximal degree in co-relation 24107. Up to 740 conditions per place. [2024-11-19 01:45:00,430 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 204 selfloop transitions, 254 changer transitions 10/469 dead transitions. [2024-11-19 01:45:00,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 469 transitions, 7888 flow [2024-11-19 01:45:00,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 01:45:00,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-19 01:45:00,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 270 transitions. [2024-11-19 01:45:00,431 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-11-19 01:45:00,431 INFO L175 Difference]: Start difference. First operand has 272 places, 313 transitions, 5694 flow. Second operand 24 states and 270 transitions. [2024-11-19 01:45:00,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 469 transitions, 7888 flow [2024-11-19 01:45:00,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 469 transitions, 7412 flow, removed 28 selfloop flow, removed 16 redundant places. [2024-11-19 01:45:00,589 INFO L231 Difference]: Finished difference. Result has 286 places, 355 transitions, 6751 flow [2024-11-19 01:45:00,589 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5295, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=6751, PETRI_PLACES=286, PETRI_TRANSITIONS=355} [2024-11-19 01:45:00,589 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 260 predicate places. [2024-11-19 01:45:00,589 INFO L471 AbstractCegarLoop]: Abstraction has has 286 places, 355 transitions, 6751 flow [2024-11-19 01:45:00,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:45:00,590 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:00,590 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:00,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-19 01:45:00,590 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:00,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:00,590 INFO L85 PathProgramCache]: Analyzing trace with hash -617271344, now seen corresponding path program 17 times [2024-11-19 01:45:00,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:00,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294777521] [2024-11-19 01:45:00,590 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:45:00,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:00,630 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 01:45:00,630 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:01,026 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:01,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:01,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294777521] [2024-11-19 01:45:01,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294777521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:01,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:01,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 01:45:01,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176733202] [2024-11-19 01:45:01,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:01,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:45:01,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:01,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:45:01,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:45:01,031 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:01,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 355 transitions, 6751 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:45:01,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:01,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:01,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:02,481 INFO L124 PetriNetUnfolderBase]: 2689/4864 cut-off events. [2024-11-19 01:45:02,481 INFO L125 PetriNetUnfolderBase]: For 44108/44108 co-relation queries the response was YES. [2024-11-19 01:45:02,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26962 conditions, 4864 events. 2689/4864 cut-off events. For 44108/44108 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 33582 event pairs, 466 based on Foata normal form. 5/4869 useless extension candidates. Maximal degree in co-relation 26819. Up to 1284 conditions per place. [2024-11-19 01:45:02,515 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 261 selfloop transitions, 220 changer transitions 9/491 dead transitions. [2024-11-19 01:45:02,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 491 transitions, 8733 flow [2024-11-19 01:45:02,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 01:45:02,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-19 01:45:02,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 272 transitions. [2024-11-19 01:45:02,519 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-11-19 01:45:02,519 INFO L175 Difference]: Start difference. First operand has 286 places, 355 transitions, 6751 flow. Second operand 24 states and 272 transitions. [2024-11-19 01:45:02,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 491 transitions, 8733 flow [2024-11-19 01:45:02,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 491 transitions, 8221 flow, removed 81 selfloop flow, removed 11 redundant places. [2024-11-19 01:45:02,709 INFO L231 Difference]: Finished difference. Result has 304 places, 378 transitions, 7326 flow [2024-11-19 01:45:02,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6305, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=7326, PETRI_PLACES=304, PETRI_TRANSITIONS=378} [2024-11-19 01:45:02,710 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 278 predicate places. [2024-11-19 01:45:02,710 INFO L471 AbstractCegarLoop]: Abstraction has has 304 places, 378 transitions, 7326 flow [2024-11-19 01:45:02,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:45:02,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:02,710 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:02,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 01:45:02,710 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:02,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:02,711 INFO L85 PathProgramCache]: Analyzing trace with hash -973873094, now seen corresponding path program 18 times [2024-11-19 01:45:02,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:02,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739468300] [2024-11-19 01:45:02,711 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:45:02,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:02,723 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-19 01:45:02,723 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:02,980 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:02,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:02,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739468300] [2024-11-19 01:45:02,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739468300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:02,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:02,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 01:45:02,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993545439] [2024-11-19 01:45:02,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:02,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:45:02,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:02,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:45:02,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:45:02,982 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:02,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 378 transitions, 7326 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:45:02,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:02,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:02,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:04,152 INFO L124 PetriNetUnfolderBase]: 2738/4959 cut-off events. [2024-11-19 01:45:04,152 INFO L125 PetriNetUnfolderBase]: For 42523/42523 co-relation queries the response was YES. [2024-11-19 01:45:04,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27721 conditions, 4959 events. 2738/4959 cut-off events. For 42523/42523 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 34353 event pairs, 267 based on Foata normal form. 1/4960 useless extension candidates. Maximal degree in co-relation 27575. Up to 927 conditions per place. [2024-11-19 01:45:04,193 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 234 selfloop transitions, 230 changer transitions 8/473 dead transitions. [2024-11-19 01:45:04,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 473 transitions, 8699 flow [2024-11-19 01:45:04,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 01:45:04,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-19 01:45:04,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 239 transitions. [2024-11-19 01:45:04,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.387987012987013 [2024-11-19 01:45:04,194 INFO L175 Difference]: Start difference. First operand has 304 places, 378 transitions, 7326 flow. Second operand 22 states and 239 transitions. [2024-11-19 01:45:04,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 473 transitions, 8699 flow [2024-11-19 01:45:04,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 473 transitions, 8221 flow, removed 38 selfloop flow, removed 24 redundant places. [2024-11-19 01:45:04,416 INFO L231 Difference]: Finished difference. Result has 302 places, 384 transitions, 7453 flow [2024-11-19 01:45:04,417 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6872, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7453, PETRI_PLACES=302, PETRI_TRANSITIONS=384} [2024-11-19 01:45:04,417 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 276 predicate places. [2024-11-19 01:45:04,417 INFO L471 AbstractCegarLoop]: Abstraction has has 302 places, 384 transitions, 7453 flow [2024-11-19 01:45:04,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:45:04,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:04,417 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:04,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 01:45:04,418 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:04,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:04,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1845366064, now seen corresponding path program 19 times [2024-11-19 01:45:04,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:04,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118311623] [2024-11-19 01:45:04,418 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:45:04,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:45:04,852 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:04,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:04,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118311623] [2024-11-19 01:45:04,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118311623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:04,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:04,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 01:45:04,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934917091] [2024-11-19 01:45:04,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:04,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:45:04,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:04,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:45:04,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:45:04,855 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:04,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 384 transitions, 7453 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:45:04,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:04,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:04,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:06,032 INFO L124 PetriNetUnfolderBase]: 2786/5033 cut-off events. [2024-11-19 01:45:06,033 INFO L125 PetriNetUnfolderBase]: For 44105/44105 co-relation queries the response was YES. [2024-11-19 01:45:06,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28200 conditions, 5033 events. 2786/5033 cut-off events. For 44105/44105 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 34972 event pairs, 364 based on Foata normal form. 5/5038 useless extension candidates. Maximal degree in co-relation 28063. Up to 1391 conditions per place. [2024-11-19 01:45:06,069 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 276 selfloop transitions, 213 changer transitions 9/499 dead transitions. [2024-11-19 01:45:06,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 499 transitions, 9212 flow [2024-11-19 01:45:06,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 01:45:06,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-19 01:45:06,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 243 transitions. [2024-11-19 01:45:06,070 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3944805194805195 [2024-11-19 01:45:06,070 INFO L175 Difference]: Start difference. First operand has 302 places, 384 transitions, 7453 flow. Second operand 22 states and 243 transitions. [2024-11-19 01:45:06,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 499 transitions, 9212 flow [2024-11-19 01:45:06,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 499 transitions, 8700 flow, removed 8 selfloop flow, removed 17 redundant places. [2024-11-19 01:45:06,243 INFO L231 Difference]: Finished difference. Result has 310 places, 396 transitions, 7698 flow [2024-11-19 01:45:06,243 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6982, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7698, PETRI_PLACES=310, PETRI_TRANSITIONS=396} [2024-11-19 01:45:06,244 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 284 predicate places. [2024-11-19 01:45:06,244 INFO L471 AbstractCegarLoop]: Abstraction has has 310 places, 396 transitions, 7698 flow [2024-11-19 01:45:06,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:45:06,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:06,244 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:06,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 01:45:06,244 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:06,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:06,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1038790082, now seen corresponding path program 20 times [2024-11-19 01:45:06,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:06,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032428948] [2024-11-19 01:45:06,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:45:06,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:06,257 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:45:06,257 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:06,518 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:06,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:06,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032428948] [2024-11-19 01:45:06,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032428948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:06,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:06,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 01:45:06,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645212064] [2024-11-19 01:45:06,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:06,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:45:06,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:06,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:45:06,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:45:06,519 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:06,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 396 transitions, 7698 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:45:06,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:06,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:06,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:08,122 INFO L124 PetriNetUnfolderBase]: 2834/5148 cut-off events. [2024-11-19 01:45:08,123 INFO L125 PetriNetUnfolderBase]: For 43831/43831 co-relation queries the response was YES. [2024-11-19 01:45:08,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28736 conditions, 5148 events. 2834/5148 cut-off events. For 43831/43831 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 35794 event pairs, 78 based on Foata normal form. 1/5149 useless extension candidates. Maximal degree in co-relation 28596. Up to 975 conditions per place. [2024-11-19 01:45:08,154 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 165 selfloop transitions, 342 changer transitions 7/515 dead transitions. [2024-11-19 01:45:08,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 515 transitions, 9247 flow [2024-11-19 01:45:08,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-19 01:45:08,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-19 01:45:08,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 305 transitions. [2024-11-19 01:45:08,156 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3513824884792627 [2024-11-19 01:45:08,156 INFO L175 Difference]: Start difference. First operand has 310 places, 396 transitions, 7698 flow. Second operand 31 states and 305 transitions. [2024-11-19 01:45:08,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 515 transitions, 9247 flow [2024-11-19 01:45:08,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 515 transitions, 8875 flow, removed 17 selfloop flow, removed 16 redundant places. [2024-11-19 01:45:08,344 INFO L231 Difference]: Finished difference. Result has 325 places, 401 transitions, 8143 flow [2024-11-19 01:45:08,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=7347, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=337, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=8143, PETRI_PLACES=325, PETRI_TRANSITIONS=401} [2024-11-19 01:45:08,345 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 299 predicate places. [2024-11-19 01:45:08,345 INFO L471 AbstractCegarLoop]: Abstraction has has 325 places, 401 transitions, 8143 flow [2024-11-19 01:45:08,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:45:08,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:08,345 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:08,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-19 01:45:08,345 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:08,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:08,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1064565566, now seen corresponding path program 21 times [2024-11-19 01:45:08,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:08,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218476551] [2024-11-19 01:45:08,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:45:08,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:08,358 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:45:08,359 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:08,650 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:08,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:08,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218476551] [2024-11-19 01:45:08,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218476551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:08,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:08,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 01:45:08,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140786290] [2024-11-19 01:45:08,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:08,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:45:08,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:08,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:45:08,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:45:08,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:08,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 401 transitions, 8143 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:45:08,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:08,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:08,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:09,819 INFO L124 PetriNetUnfolderBase]: 2838/5160 cut-off events. [2024-11-19 01:45:09,819 INFO L125 PetriNetUnfolderBase]: For 47047/47047 co-relation queries the response was YES. [2024-11-19 01:45:09,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29553 conditions, 5160 events. 2838/5160 cut-off events. For 47047/47047 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 36085 event pairs, 364 based on Foata normal form. 5/5165 useless extension candidates. Maximal degree in co-relation 29414. Up to 1321 conditions per place. [2024-11-19 01:45:09,855 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 224 selfloop transitions, 233 changer transitions 11/469 dead transitions. [2024-11-19 01:45:09,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 469 transitions, 9342 flow [2024-11-19 01:45:09,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 01:45:09,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-19 01:45:09,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 190 transitions. [2024-11-19 01:45:09,856 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.376984126984127 [2024-11-19 01:45:09,856 INFO L175 Difference]: Start difference. First operand has 325 places, 401 transitions, 8143 flow. Second operand 18 states and 190 transitions. [2024-11-19 01:45:09,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 469 transitions, 9342 flow [2024-11-19 01:45:10,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 469 transitions, 8587 flow, removed 21 selfloop flow, removed 27 redundant places. [2024-11-19 01:45:10,053 INFO L231 Difference]: Finished difference. Result has 317 places, 400 transitions, 7852 flow [2024-11-19 01:45:10,054 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=7397, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7852, PETRI_PLACES=317, PETRI_TRANSITIONS=400} [2024-11-19 01:45:10,054 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 291 predicate places. [2024-11-19 01:45:10,054 INFO L471 AbstractCegarLoop]: Abstraction has has 317 places, 400 transitions, 7852 flow [2024-11-19 01:45:10,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:45:10,054 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:10,054 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:10,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-19 01:45:10,055 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:10,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:10,055 INFO L85 PathProgramCache]: Analyzing trace with hash -2015042110, now seen corresponding path program 22 times [2024-11-19 01:45:10,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:10,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701215831] [2024-11-19 01:45:10,055 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:45:10,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:10,068 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:45:10,068 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:10,211 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:10,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:10,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701215831] [2024-11-19 01:45:10,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701215831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:10,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:10,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 01:45:10,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847915854] [2024-11-19 01:45:10,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:10,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:45:10,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:10,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:45:10,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:45:10,213 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:10,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 400 transitions, 7852 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:45:10,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:10,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:10,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:11,387 INFO L124 PetriNetUnfolderBase]: 2823/5124 cut-off events. [2024-11-19 01:45:11,387 INFO L125 PetriNetUnfolderBase]: For 44587/44587 co-relation queries the response was YES. [2024-11-19 01:45:11,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28714 conditions, 5124 events. 2823/5124 cut-off events. For 44587/44587 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 35690 event pairs, 122 based on Foata normal form. 1/5125 useless extension candidates. Maximal degree in co-relation 28575. Up to 1098 conditions per place. [2024-11-19 01:45:11,426 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 144 selfloop transitions, 321 changer transitions 7/473 dead transitions. [2024-11-19 01:45:11,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 473 transitions, 9050 flow [2024-11-19 01:45:11,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 01:45:11,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-19 01:45:11,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 199 transitions. [2024-11-19 01:45:11,427 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37406015037593987 [2024-11-19 01:45:11,427 INFO L175 Difference]: Start difference. First operand has 317 places, 400 transitions, 7852 flow. Second operand 19 states and 199 transitions. [2024-11-19 01:45:11,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 473 transitions, 9050 flow [2024-11-19 01:45:11,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 473 transitions, 8566 flow, removed 8 selfloop flow, removed 18 redundant places. [2024-11-19 01:45:11,621 INFO L231 Difference]: Finished difference. Result has 317 places, 400 transitions, 8044 flow [2024-11-19 01:45:11,621 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=7376, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=320, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=8044, PETRI_PLACES=317, PETRI_TRANSITIONS=400} [2024-11-19 01:45:11,622 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 291 predicate places. [2024-11-19 01:45:11,622 INFO L471 AbstractCegarLoop]: Abstraction has has 317 places, 400 transitions, 8044 flow [2024-11-19 01:45:11,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:45:11,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:11,623 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:11,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-19 01:45:11,623 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:11,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:11,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1803235205, now seen corresponding path program 1 times [2024-11-19 01:45:11,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:11,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521464648] [2024-11-19 01:45:11,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:45:11,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:45:11,667 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:11,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:11,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521464648] [2024-11-19 01:45:11,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521464648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:45:11,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515017665] [2024-11-19 01:45:11,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:45:11,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:45:11,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:45:11,670 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:45:11,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 01:45:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:45:11,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 01:45:11,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:45:11,793 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:11,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:45:11,820 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:11,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515017665] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:45:11,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:45:11,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-19 01:45:11,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24398912] [2024-11-19 01:45:11,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:45:11,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 01:45:11,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:11,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 01:45:11,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:45:11,822 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:11,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 400 transitions, 8044 flow. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 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) [2024-11-19 01:45:11,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:11,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:11,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:12,830 INFO L124 PetriNetUnfolderBase]: 3458/6192 cut-off events. [2024-11-19 01:45:12,831 INFO L125 PetriNetUnfolderBase]: For 50179/50179 co-relation queries the response was YES. [2024-11-19 01:45:12,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37515 conditions, 6192 events. 3458/6192 cut-off events. For 50179/50179 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 41849 event pairs, 704 based on Foata normal form. 514/6706 useless extension candidates. Maximal degree in co-relation 37377. Up to 1497 conditions per place. [2024-11-19 01:45:12,877 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 564 selfloop transitions, 107 changer transitions 0/672 dead transitions. [2024-11-19 01:45:12,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 672 transitions, 14077 flow [2024-11-19 01:45:12,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:45:12,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 01:45:12,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-11-19 01:45:12,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5044642857142857 [2024-11-19 01:45:12,878 INFO L175 Difference]: Start difference. First operand has 317 places, 400 transitions, 8044 flow. Second operand 8 states and 113 transitions. [2024-11-19 01:45:12,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 672 transitions, 14077 flow [2024-11-19 01:45:13,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 672 transitions, 13052 flow, removed 30 selfloop flow, removed 19 redundant places. [2024-11-19 01:45:13,214 INFO L231 Difference]: Finished difference. Result has 308 places, 443 transitions, 8439 flow [2024-11-19 01:45:13,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=7415, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8439, PETRI_PLACES=308, PETRI_TRANSITIONS=443} [2024-11-19 01:45:13,214 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 282 predicate places. [2024-11-19 01:45:13,214 INFO L471 AbstractCegarLoop]: Abstraction has has 308 places, 443 transitions, 8439 flow [2024-11-19 01:45:13,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 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) [2024-11-19 01:45:13,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:13,215 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:13,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 01:45:13,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:45:13,419 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:13,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:13,420 INFO L85 PathProgramCache]: Analyzing trace with hash -364246462, now seen corresponding path program 1 times [2024-11-19 01:45:13,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:13,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281975090] [2024-11-19 01:45:13,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:45:13,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:45:13,463 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:13,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:13,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281975090] [2024-11-19 01:45:13,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281975090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:45:13,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035606067] [2024-11-19 01:45:13,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:45:13,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:45:13,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:45:13,465 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:45:13,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 01:45:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:45:13,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 01:45:13,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:45:13,589 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:13,589 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:45:13,614 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:13,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035606067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:45:13,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:45:13,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-19 01:45:13,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660714501] [2024-11-19 01:45:13,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:45:13,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:45:13,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:13,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:45:13,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:45:13,616 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:13,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 443 transitions, 8439 flow. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 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) [2024-11-19 01:45:13,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:13,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:13,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:14,997 INFO L124 PetriNetUnfolderBase]: 3991/7040 cut-off events. [2024-11-19 01:45:14,997 INFO L125 PetriNetUnfolderBase]: For 58438/58438 co-relation queries the response was YES. [2024-11-19 01:45:15,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44781 conditions, 7040 events. 3991/7040 cut-off events. For 58438/58438 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 46268 event pairs, 1008 based on Foata normal form. 556/7596 useless extension candidates. Maximal degree in co-relation 44643. Up to 1849 conditions per place. [2024-11-19 01:45:15,077 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 638 selfloop transitions, 114 changer transitions 0/753 dead transitions. [2024-11-19 01:45:15,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 753 transitions, 15039 flow [2024-11-19 01:45:15,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:45:15,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:45:15,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-11-19 01:45:15,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2024-11-19 01:45:15,078 INFO L175 Difference]: Start difference. First operand has 308 places, 443 transitions, 8439 flow. Second operand 7 states and 120 transitions. [2024-11-19 01:45:15,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 753 transitions, 15039 flow [2024-11-19 01:45:15,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 753 transitions, 14771 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-11-19 01:45:15,506 INFO L231 Difference]: Finished difference. Result has 312 places, 484 transitions, 9382 flow [2024-11-19 01:45:15,506 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=8261, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9382, PETRI_PLACES=312, PETRI_TRANSITIONS=484} [2024-11-19 01:45:15,507 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 286 predicate places. [2024-11-19 01:45:15,507 INFO L471 AbstractCegarLoop]: Abstraction has has 312 places, 484 transitions, 9382 flow [2024-11-19 01:45:15,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 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) [2024-11-19 01:45:15,507 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:15,507 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:15,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 01:45:15,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:45:15,712 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:15,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:15,713 INFO L85 PathProgramCache]: Analyzing trace with hash 866801083, now seen corresponding path program 1 times [2024-11-19 01:45:15,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:15,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619989578] [2024-11-19 01:45:15,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:45:15,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:45:16,152 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:16,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:16,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619989578] [2024-11-19 01:45:16,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619989578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:45:16,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117082191] [2024-11-19 01:45:16,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:45:16,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:45:16,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:45:16,155 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:45:16,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 01:45:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:45:16,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 01:45:16,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:45:16,361 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:45:16,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 74 [2024-11-19 01:45:16,399 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:16,400 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:45:16,496 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-19 01:45:16,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 87 [2024-11-19 01:45:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:16,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117082191] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:45:16,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:45:16,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 7] total 18 [2024-11-19 01:45:16,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547986704] [2024-11-19 01:45:16,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:16,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:45:16,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:16,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:45:16,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-19 01:45:16,531 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:16,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 484 transitions, 9382 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2024-11-19 01:45:16,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:16,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:16,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:17,880 INFO L124 PetriNetUnfolderBase]: 4405/7940 cut-off events. [2024-11-19 01:45:17,881 INFO L125 PetriNetUnfolderBase]: For 66073/66073 co-relation queries the response was YES. [2024-11-19 01:45:17,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50053 conditions, 7940 events. 4405/7940 cut-off events. For 66073/66073 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 55151 event pairs, 894 based on Foata normal form. 30/7970 useless extension candidates. Maximal degree in co-relation 49915. Up to 2635 conditions per place. [2024-11-19 01:45:17,955 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 336 selfloop transitions, 225 changer transitions 0/562 dead transitions. [2024-11-19 01:45:17,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 562 transitions, 11150 flow [2024-11-19 01:45:17,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 01:45:17,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 01:45:17,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-11-19 01:45:17,957 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4577922077922078 [2024-11-19 01:45:17,957 INFO L175 Difference]: Start difference. First operand has 312 places, 484 transitions, 9382 flow. Second operand 11 states and 141 transitions. [2024-11-19 01:45:17,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 562 transitions, 11150 flow [2024-11-19 01:45:18,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 562 transitions, 10982 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-11-19 01:45:18,416 INFO L231 Difference]: Finished difference. Result has 320 places, 496 transitions, 9991 flow [2024-11-19 01:45:18,416 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=9182, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9991, PETRI_PLACES=320, PETRI_TRANSITIONS=496} [2024-11-19 01:45:18,417 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 294 predicate places. [2024-11-19 01:45:18,417 INFO L471 AbstractCegarLoop]: Abstraction has has 320 places, 496 transitions, 9991 flow [2024-11-19 01:45:18,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2024-11-19 01:45:18,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:18,417 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:18,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 01:45:18,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:45:18,618 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:18,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:18,618 INFO L85 PathProgramCache]: Analyzing trace with hash 814512127, now seen corresponding path program 2 times [2024-11-19 01:45:18,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:18,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376094247] [2024-11-19 01:45:18,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:45:18,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:18,647 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:45:18,648 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:18,939 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:18,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:18,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376094247] [2024-11-19 01:45:18,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376094247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:18,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:18,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:45:18,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404861779] [2024-11-19 01:45:18,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:18,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:45:18,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:18,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:45:18,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:45:18,940 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:18,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 496 transitions, 9991 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:45:18,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:18,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:18,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:20,326 INFO L124 PetriNetUnfolderBase]: 4400/7935 cut-off events. [2024-11-19 01:45:20,326 INFO L125 PetriNetUnfolderBase]: For 68901/68901 co-relation queries the response was YES. [2024-11-19 01:45:20,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51632 conditions, 7935 events. 4400/7935 cut-off events. For 68901/68901 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 55260 event pairs, 1215 based on Foata normal form. 5/7940 useless extension candidates. Maximal degree in co-relation 51493. Up to 2848 conditions per place. [2024-11-19 01:45:20,415 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 294 selfloop transitions, 225 changer transitions 10/530 dead transitions. [2024-11-19 01:45:20,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 530 transitions, 11167 flow [2024-11-19 01:45:20,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:45:20,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 01:45:20,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-11-19 01:45:20,417 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3892857142857143 [2024-11-19 01:45:20,417 INFO L175 Difference]: Start difference. First operand has 320 places, 496 transitions, 9991 flow. Second operand 10 states and 109 transitions. [2024-11-19 01:45:20,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 530 transitions, 11167 flow [2024-11-19 01:45:20,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 530 transitions, 10979 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-19 01:45:20,870 INFO L231 Difference]: Finished difference. Result has 326 places, 493 transitions, 10183 flow [2024-11-19 01:45:20,871 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=9774, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10183, PETRI_PLACES=326, PETRI_TRANSITIONS=493} [2024-11-19 01:45:20,871 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 300 predicate places. [2024-11-19 01:45:20,871 INFO L471 AbstractCegarLoop]: Abstraction has has 326 places, 493 transitions, 10183 flow [2024-11-19 01:45:20,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:45:20,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:20,871 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:20,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-19 01:45:20,872 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:20,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:20,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1454432192, now seen corresponding path program 1 times [2024-11-19 01:45:20,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:20,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876884118] [2024-11-19 01:45:20,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:45:20,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:45:21,166 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:21,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:21,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876884118] [2024-11-19 01:45:21,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876884118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:45:21,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662071790] [2024-11-19 01:45:21,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:45:21,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:45:21,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:45:21,168 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:45:21,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 01:45:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:45:21,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 01:45:21,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:45:21,430 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:21,430 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:45:21,513 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-19 01:45:21,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-19 01:45:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:21,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662071790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:45:21,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:45:21,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2024-11-19 01:45:21,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553635632] [2024-11-19 01:45:21,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:45:21,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:45:21,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:21,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:45:21,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:45:21,525 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:21,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 493 transitions, 10183 flow. Second operand has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 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) [2024-11-19 01:45:21,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:21,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:21,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:23,415 INFO L124 PetriNetUnfolderBase]: 4460/8031 cut-off events. [2024-11-19 01:45:23,415 INFO L125 PetriNetUnfolderBase]: For 73494/73494 co-relation queries the response was YES. [2024-11-19 01:45:23,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53626 conditions, 8031 events. 4460/8031 cut-off events. For 73494/73494 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 55976 event pairs, 495 based on Foata normal form. 56/8087 useless extension candidates. Maximal degree in co-relation 53485. Up to 1910 conditions per place. [2024-11-19 01:45:23,501 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 193 selfloop transitions, 387 changer transitions 1/582 dead transitions. [2024-11-19 01:45:23,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 582 transitions, 12125 flow [2024-11-19 01:45:23,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 01:45:23,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-19 01:45:23,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 186 transitions. [2024-11-19 01:45:23,502 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-11-19 01:45:23,502 INFO L175 Difference]: Start difference. First operand has 326 places, 493 transitions, 10183 flow. Second operand 18 states and 186 transitions. [2024-11-19 01:45:23,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 582 transitions, 12125 flow [2024-11-19 01:45:23,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 582 transitions, 11642 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-19 01:45:23,969 INFO L231 Difference]: Finished difference. Result has 333 places, 515 transitions, 11008 flow [2024-11-19 01:45:23,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=9634, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=11008, PETRI_PLACES=333, PETRI_TRANSITIONS=515} [2024-11-19 01:45:23,970 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 307 predicate places. [2024-11-19 01:45:23,970 INFO L471 AbstractCegarLoop]: Abstraction has has 333 places, 515 transitions, 11008 flow [2024-11-19 01:45:23,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 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) [2024-11-19 01:45:23,970 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:23,970 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:23,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 01:45:24,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:45:24,171 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:24,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:24,172 INFO L85 PathProgramCache]: Analyzing trace with hash 897304357, now seen corresponding path program 3 times [2024-11-19 01:45:24,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:24,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549365760] [2024-11-19 01:45:24,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:45:24,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:24,209 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:45:24,210 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:24,459 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:24,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:24,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549365760] [2024-11-19 01:45:24,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549365760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:24,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:24,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:45:24,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800001391] [2024-11-19 01:45:24,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:24,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:45:24,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:24,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:45:24,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:45:24,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:24,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 515 transitions, 11008 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:45:24,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:24,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:24,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:26,022 INFO L124 PetriNetUnfolderBase]: 4450/8016 cut-off events. [2024-11-19 01:45:26,022 INFO L125 PetriNetUnfolderBase]: For 79771/79771 co-relation queries the response was YES. [2024-11-19 01:45:26,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55105 conditions, 8016 events. 4450/8016 cut-off events. For 79771/79771 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 55899 event pairs, 773 based on Foata normal form. 5/8021 useless extension candidates. Maximal degree in co-relation 54960. Up to 1667 conditions per place. [2024-11-19 01:45:26,107 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 302 selfloop transitions, 261 changer transitions 6/570 dead transitions. [2024-11-19 01:45:26,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 570 transitions, 12291 flow [2024-11-19 01:45:26,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 01:45:26,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-19 01:45:26,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 169 transitions. [2024-11-19 01:45:26,108 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3550420168067227 [2024-11-19 01:45:26,108 INFO L175 Difference]: Start difference. First operand has 333 places, 515 transitions, 11008 flow. Second operand 17 states and 169 transitions. [2024-11-19 01:45:26,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 570 transitions, 12291 flow [2024-11-19 01:45:26,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 570 transitions, 12093 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-19 01:45:26,600 INFO L231 Difference]: Finished difference. Result has 342 places, 511 transitions, 11244 flow [2024-11-19 01:45:26,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=10758, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=11244, PETRI_PLACES=342, PETRI_TRANSITIONS=511} [2024-11-19 01:45:26,601 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 316 predicate places. [2024-11-19 01:45:26,601 INFO L471 AbstractCegarLoop]: Abstraction has has 342 places, 511 transitions, 11244 flow [2024-11-19 01:45:26,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:45:26,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:26,602 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:26,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-19 01:45:26,602 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:26,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:26,602 INFO L85 PathProgramCache]: Analyzing trace with hash -73697253, now seen corresponding path program 4 times [2024-11-19 01:45:26,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:26,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311699547] [2024-11-19 01:45:26,603 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:45:26,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:26,614 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:45:26,614 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:26,695 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:26,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:26,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311699547] [2024-11-19 01:45:26,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311699547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:26,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:26,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 01:45:26,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318406876] [2024-11-19 01:45:26,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:26,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:45:26,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:26,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:45:26,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:45:26,697 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:26,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 511 transitions, 11244 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2024-11-19 01:45:26,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:26,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:26,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:28,238 INFO L124 PetriNetUnfolderBase]: 4363/7832 cut-off events. [2024-11-19 01:45:28,238 INFO L125 PetriNetUnfolderBase]: For 84519/84519 co-relation queries the response was YES. [2024-11-19 01:45:28,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55561 conditions, 7832 events. 4363/7832 cut-off events. For 84519/84519 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 54036 event pairs, 767 based on Foata normal form. 5/7837 useless extension candidates. Maximal degree in co-relation 55418. Up to 1682 conditions per place. [2024-11-19 01:45:28,324 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 311 selfloop transitions, 258 changer transitions 4/574 dead transitions. [2024-11-19 01:45:28,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 574 transitions, 12700 flow [2024-11-19 01:45:28,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 01:45:28,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-19 01:45:28,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 160 transitions. [2024-11-19 01:45:28,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-11-19 01:45:28,325 INFO L175 Difference]: Start difference. First operand has 342 places, 511 transitions, 11244 flow. Second operand 14 states and 160 transitions. [2024-11-19 01:45:28,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 574 transitions, 12700 flow [2024-11-19 01:45:28,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 574 transitions, 12353 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-11-19 01:45:28,851 INFO L231 Difference]: Finished difference. Result has 338 places, 510 transitions, 11398 flow [2024-11-19 01:45:28,852 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=10837, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=11398, PETRI_PLACES=338, PETRI_TRANSITIONS=510} [2024-11-19 01:45:28,852 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 312 predicate places. [2024-11-19 01:45:28,852 INFO L471 AbstractCegarLoop]: Abstraction has has 338 places, 510 transitions, 11398 flow [2024-11-19 01:45:28,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2024-11-19 01:45:28,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:28,853 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:28,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-19 01:45:28,853 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:28,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:28,853 INFO L85 PathProgramCache]: Analyzing trace with hash 763083020, now seen corresponding path program 2 times [2024-11-19 01:45:28,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:28,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469210069] [2024-11-19 01:45:28,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:45:28,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:28,882 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:45:28,889 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:29,359 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:29,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:29,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469210069] [2024-11-19 01:45:29,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469210069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:45:29,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153858262] [2024-11-19 01:45:29,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:45:29,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:45:29,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:45:29,364 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:45:29,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 01:45:29,496 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:45:29,496 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:29,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 01:45:29,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:45:29,640 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:29,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:45:29,756 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-19 01:45:29,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-19 01:45:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:29,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153858262] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:45:29,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:45:29,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 16 [2024-11-19 01:45:29,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378125471] [2024-11-19 01:45:29,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:45:29,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:45:29,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:29,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:45:29,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:45:29,777 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:29,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 510 transitions, 11398 flow. Second operand has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 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) [2024-11-19 01:45:29,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:29,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:29,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:32,526 INFO L124 PetriNetUnfolderBase]: 5959/10683 cut-off events. [2024-11-19 01:45:32,527 INFO L125 PetriNetUnfolderBase]: For 115650/115650 co-relation queries the response was YES. [2024-11-19 01:45:32,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76166 conditions, 10683 events. 5959/10683 cut-off events. For 115650/115650 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 78023 event pairs, 1006 based on Foata normal form. 45/10728 useless extension candidates. Maximal degree in co-relation 76024. Up to 2575 conditions per place. [2024-11-19 01:45:32,622 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 302 selfloop transitions, 434 changer transitions 4/741 dead transitions. [2024-11-19 01:45:32,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 741 transitions, 16086 flow [2024-11-19 01:45:32,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 01:45:32,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-19 01:45:32,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 275 transitions. [2024-11-19 01:45:32,624 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40922619047619047 [2024-11-19 01:45:32,624 INFO L175 Difference]: Start difference. First operand has 338 places, 510 transitions, 11398 flow. Second operand 24 states and 275 transitions. [2024-11-19 01:45:32,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 741 transitions, 16086 flow [2024-11-19 01:45:33,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 741 transitions, 15511 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-11-19 01:45:33,403 INFO L231 Difference]: Finished difference. Result has 360 places, 620 transitions, 14924 flow [2024-11-19 01:45:33,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=10904, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=14924, PETRI_PLACES=360, PETRI_TRANSITIONS=620} [2024-11-19 01:45:33,409 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 334 predicate places. [2024-11-19 01:45:33,409 INFO L471 AbstractCegarLoop]: Abstraction has has 360 places, 620 transitions, 14924 flow [2024-11-19 01:45:33,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 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) [2024-11-19 01:45:33,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:33,409 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:33,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 01:45:33,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-19 01:45:33,611 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:33,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:33,611 INFO L85 PathProgramCache]: Analyzing trace with hash -527195520, now seen corresponding path program 3 times [2024-11-19 01:45:33,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:33,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122105847] [2024-11-19 01:45:33,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:45:33,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:33,655 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:45:33,656 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:34,215 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:34,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:34,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122105847] [2024-11-19 01:45:34,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122105847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:34,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:34,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:45:34,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673915006] [2024-11-19 01:45:34,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:34,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:45:34,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:34,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:45:34,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:45:34,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:34,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 620 transitions, 14924 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:45:34,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:34,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:34,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:37,205 INFO L124 PetriNetUnfolderBase]: 5949/10664 cut-off events. [2024-11-19 01:45:37,205 INFO L125 PetriNetUnfolderBase]: For 133228/133228 co-relation queries the response was YES. [2024-11-19 01:45:37,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79725 conditions, 10664 events. 5949/10664 cut-off events. For 133228/133228 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 78005 event pairs, 2759 based on Foata normal form. 4/10668 useless extension candidates. Maximal degree in co-relation 79572. Up to 8139 conditions per place. [2024-11-19 01:45:37,329 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 511 selfloop transitions, 130 changer transitions 4/646 dead transitions. [2024-11-19 01:45:37,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 646 transitions, 16285 flow [2024-11-19 01:45:37,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 01:45:37,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 01:45:37,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-11-19 01:45:37,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33630952380952384 [2024-11-19 01:45:37,331 INFO L175 Difference]: Start difference. First operand has 360 places, 620 transitions, 14924 flow. Second operand 12 states and 113 transitions. [2024-11-19 01:45:37,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 646 transitions, 16285 flow [2024-11-19 01:45:38,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 646 transitions, 15881 flow, removed 20 selfloop flow, removed 12 redundant places. [2024-11-19 01:45:38,395 INFO L231 Difference]: Finished difference. Result has 359 places, 617 transitions, 14711 flow [2024-11-19 01:45:38,396 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=14473, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14711, PETRI_PLACES=359, PETRI_TRANSITIONS=617} [2024-11-19 01:45:38,396 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 333 predicate places. [2024-11-19 01:45:38,396 INFO L471 AbstractCegarLoop]: Abstraction has has 359 places, 617 transitions, 14711 flow [2024-11-19 01:45:38,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:45:38,397 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:38,397 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:38,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-19 01:45:38,397 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:38,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:38,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1996233818, now seen corresponding path program 4 times [2024-11-19 01:45:38,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:38,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156377412] [2024-11-19 01:45:38,398 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:45:38,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:38,407 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:45:38,408 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:38,491 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:38,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:38,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156377412] [2024-11-19 01:45:38,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156377412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:45:38,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370288674] [2024-11-19 01:45:38,491 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:45:38,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:45:38,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:45:38,493 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:45:38,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 01:45:38,594 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:45:38,594 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:38,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 01:45:38,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:45:38,668 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:45:38,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 74 [2024-11-19 01:45:38,693 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:38,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:45:38,778 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-19 01:45:38,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-19 01:45:38,786 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:38,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370288674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:45:38,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:45:38,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-19 01:45:38,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54852030] [2024-11-19 01:45:38,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:45:38,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:45:38,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:38,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:45:38,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:45:38,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:38,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 617 transitions, 14711 flow. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 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) [2024-11-19 01:45:38,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:38,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:38,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:42,898 INFO L124 PetriNetUnfolderBase]: 7882/13851 cut-off events. [2024-11-19 01:45:42,899 INFO L125 PetriNetUnfolderBase]: For 166785/166785 co-relation queries the response was YES. [2024-11-19 01:45:43,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106334 conditions, 13851 events. 7882/13851 cut-off events. For 166785/166785 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 102857 event pairs, 1400 based on Foata normal form. 34/13885 useless extension candidates. Maximal degree in co-relation 106185. Up to 3912 conditions per place. [2024-11-19 01:45:43,063 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 315 selfloop transitions, 539 changer transitions 5/860 dead transitions. [2024-11-19 01:45:43,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 860 transitions, 20109 flow [2024-11-19 01:45:43,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 01:45:43,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-19 01:45:43,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 283 transitions. [2024-11-19 01:45:43,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4042857142857143 [2024-11-19 01:45:43,065 INFO L175 Difference]: Start difference. First operand has 359 places, 617 transitions, 14711 flow. Second operand 25 states and 283 transitions. [2024-11-19 01:45:43,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 860 transitions, 20109 flow [2024-11-19 01:45:44,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 860 transitions, 19749 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-11-19 01:45:44,392 INFO L231 Difference]: Finished difference. Result has 377 places, 740 transitions, 19168 flow [2024-11-19 01:45:44,397 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=14049, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=403, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=19168, PETRI_PLACES=377, PETRI_TRANSITIONS=740} [2024-11-19 01:45:44,399 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 351 predicate places. [2024-11-19 01:45:44,399 INFO L471 AbstractCegarLoop]: Abstraction has has 377 places, 740 transitions, 19168 flow [2024-11-19 01:45:44,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 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) [2024-11-19 01:45:44,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:44,403 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:44,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 01:45:44,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-19 01:45:44,605 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:44,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:44,605 INFO L85 PathProgramCache]: Analyzing trace with hash 298493033, now seen corresponding path program 5 times [2024-11-19 01:45:44,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:44,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097706821] [2024-11-19 01:45:44,609 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:45:44,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:44,668 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 01:45:44,670 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:46,105 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 01:45:46,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:46,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097706821] [2024-11-19 01:45:46,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097706821] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:45:46,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247801321] [2024-11-19 01:45:46,105 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:45:46,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:45:46,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:45:46,107 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:45:46,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 01:45:46,441 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 01:45:46,442 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:46,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 01:45:46,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:45:46,666 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:46,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:45:46,782 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-19 01:45:46,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-19 01:45:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:46,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247801321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:45:46,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:45:46,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 7] total 22 [2024-11-19 01:45:46,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87663307] [2024-11-19 01:45:46,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:45:46,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 01:45:46,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:46,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 01:45:46,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2024-11-19 01:45:46,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:46,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 740 transitions, 19168 flow. Second operand has 22 states, 22 states have (on average 5.181818181818182) internal successors, (114), 22 states have internal predecessors, (114), 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) [2024-11-19 01:45:46,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:46,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:46,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:51,963 INFO L124 PetriNetUnfolderBase]: 8105/14344 cut-off events. [2024-11-19 01:45:51,963 INFO L125 PetriNetUnfolderBase]: For 205641/205641 co-relation queries the response was YES. [2024-11-19 01:45:52,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115377 conditions, 14344 events. 8105/14344 cut-off events. For 205641/205641 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 108265 event pairs, 1373 based on Foata normal form. 52/14396 useless extension candidates. Maximal degree in co-relation 115218. Up to 4478 conditions per place. [2024-11-19 01:45:52,107 INFO L140 encePairwiseOnDemand]: 15/28 looper letters, 428 selfloop transitions, 419 changer transitions 0/848 dead transitions. [2024-11-19 01:45:52,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 848 transitions, 22043 flow [2024-11-19 01:45:52,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 01:45:52,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-19 01:45:52,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 192 transitions. [2024-11-19 01:45:52,109 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3609022556390977 [2024-11-19 01:45:52,109 INFO L175 Difference]: Start difference. First operand has 377 places, 740 transitions, 19168 flow. Second operand 19 states and 192 transitions. [2024-11-19 01:45:52,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 848 transitions, 22043 flow [2024-11-19 01:45:53,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 848 transitions, 21748 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-11-19 01:45:53,894 INFO L231 Difference]: Finished difference. Result has 389 places, 779 transitions, 20709 flow [2024-11-19 01:45:53,895 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=18876, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=383, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=20709, PETRI_PLACES=389, PETRI_TRANSITIONS=779} [2024-11-19 01:45:53,896 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 363 predicate places. [2024-11-19 01:45:53,896 INFO L471 AbstractCegarLoop]: Abstraction has has 389 places, 779 transitions, 20709 flow [2024-11-19 01:45:53,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.181818181818182) internal successors, (114), 22 states have internal predecessors, (114), 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) [2024-11-19 01:45:53,896 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:53,896 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:53,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 01:45:54,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-19 01:45:54,101 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:54,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:54,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1486478912, now seen corresponding path program 5 times [2024-11-19 01:45:54,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:54,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725557087] [2024-11-19 01:45:54,101 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:45:54,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:54,132 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 01:45:54,134 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:54,931 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 01:45:54,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:54,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725557087] [2024-11-19 01:45:54,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725557087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:45:54,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435184111] [2024-11-19 01:45:54,932 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:45:54,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:45:54,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:45:54,936 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:45:54,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 01:45:55,106 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 01:45:55,106 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:55,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 01:45:55,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:45:55,249 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:45:55,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 70 [2024-11-19 01:45:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:55,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:45:55,342 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-19 01:45:55,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 95 [2024-11-19 01:45:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:55,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435184111] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:45:55,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:45:55,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15, 9] total 22 [2024-11-19 01:45:55,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712665234] [2024-11-19 01:45:55,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:55,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:45:55,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:55,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:45:55,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2024-11-19 01:45:55,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:45:55,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 779 transitions, 20709 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2024-11-19 01:45:55,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:55,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:45:55,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:59,751 INFO L124 PetriNetUnfolderBase]: 8610/15391 cut-off events. [2024-11-19 01:45:59,751 INFO L125 PetriNetUnfolderBase]: For 234315/234315 co-relation queries the response was YES. [2024-11-19 01:45:59,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125159 conditions, 15391 events. 8610/15391 cut-off events. For 234315/234315 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 119135 event pairs, 2515 based on Foata normal form. 34/15425 useless extension candidates. Maximal degree in co-relation 124987. Up to 7090 conditions per place. [2024-11-19 01:46:00,052 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 470 selfloop transitions, 387 changer transitions 1/859 dead transitions. [2024-11-19 01:46:00,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 859 transitions, 23351 flow [2024-11-19 01:46:00,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 01:46:00,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 01:46:00,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-11-19 01:46:00,053 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4707792207792208 [2024-11-19 01:46:00,054 INFO L175 Difference]: Start difference. First operand has 389 places, 779 transitions, 20709 flow. Second operand 11 states and 145 transitions. [2024-11-19 01:46:00,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 859 transitions, 23351 flow [2024-11-19 01:46:02,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 859 transitions, 22734 flow, removed 34 selfloop flow, removed 15 redundant places. [2024-11-19 01:46:02,063 INFO L231 Difference]: Finished difference. Result has 386 places, 795 transitions, 21757 flow [2024-11-19 01:46:02,064 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=20060, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=777, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=370, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21757, PETRI_PLACES=386, PETRI_TRANSITIONS=795} [2024-11-19 01:46:02,065 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 360 predicate places. [2024-11-19 01:46:02,065 INFO L471 AbstractCegarLoop]: Abstraction has has 386 places, 795 transitions, 21757 flow [2024-11-19 01:46:02,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2024-11-19 01:46:02,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:46:02,065 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:46:02,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 01:46:02,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-19 01:46:02,270 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:46:02,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:46:02,270 INFO L85 PathProgramCache]: Analyzing trace with hash 217093977, now seen corresponding path program 6 times [2024-11-19 01:46:02,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:46:02,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432991258] [2024-11-19 01:46:02,271 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:46:02,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:46:02,289 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 01:46:02,289 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:46:02,608 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:46:02,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:46:02,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432991258] [2024-11-19 01:46:02,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432991258] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:46:02,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710378785] [2024-11-19 01:46:02,608 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:46:02,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:46:02,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:46:02,612 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:46:02,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 01:46:02,736 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 01:46:02,736 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:46:02,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 01:46:02,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:46:02,830 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:46:02,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 70 [2024-11-19 01:46:02,855 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:46:02,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:46:02,940 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-19 01:46:02,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-19 01:46:02,966 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:46:02,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710378785] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:46:02,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:46:02,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 17 [2024-11-19 01:46:02,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319605491] [2024-11-19 01:46:02,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:46:02,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 01:46:02,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:46:02,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 01:46:02,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-19 01:46:02,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-11-19 01:46:02,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 795 transitions, 21757 flow. Second operand has 17 states, 17 states have (on average 5.352941176470588) internal successors, (91), 17 states have internal predecessors, (91), 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) [2024-11-19 01:46:02,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:46:02,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-11-19 01:46:02,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand