/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_16.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 04:02:22,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 04:02:22,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 04:02:22,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-29 04:02:22,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-29 04:02:22,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-29 04:02:22,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-29 04:02:22,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-29 04:02:22,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-29 04:02:22,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-29 04:02:22,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-29 04:02:22,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-29 04:02:22,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 04:02:22,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 04:02:22,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 04:02:22,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 04:02:22,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 04:02:22,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 04:02:22,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 04:02:22,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 04:02:22,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 04:02:22,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 04:02:22,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 04:02:22,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 04:02:22,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-29 04:02:22,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 04:02:22,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 04:02:22,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 04:02:22,431 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 04:02:22,486 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 04:02:22,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 04:02:22,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 04:02:22,493 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 04:02:22,493 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 04:02:22,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 04:02:22,493 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 04:02:22,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 04:02:22,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 04:02:22,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 04:02:22,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 04:02:22,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 04:02:22,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 04:02:22,496 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 04:02:22,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 04:02:22,497 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 04:02:22,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 04:02:22,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 04:02:22,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 04:02:22,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 04:02:22,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 04:02:22,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 04:02:22,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 04:02:22,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 04:02:22,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 04:02:22,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 04:02:22,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 04:02:22,500 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 04:02:22,500 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 04:02:22,500 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 04:02:22,500 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 04:02:22,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 04:02:23,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 04:02:23,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 04:02:23,045 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-04-29 04:02:23,046 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-04-29 04:02:23,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_16.bpl [2021-04-29 04:02:23,048 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_16.bpl' [2021-04-29 04:02:23,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 04:02:23,180 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-29 04:02:23,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 04:02:23,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 04:02:23,183 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 04:02:23,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:02:23" (1/1) ... [2021-04-29 04:02:23,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:02:23" (1/1) ... [2021-04-29 04:02:23,238 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 04:02:23,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 04:02:23,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 04:02:23,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 04:02:23,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:02:23" (1/1) ... [2021-04-29 04:02:23,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:02:23" (1/1) ... [2021-04-29 04:02:23,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:02:23" (1/1) ... [2021-04-29 04:02:23,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:02:23" (1/1) ... [2021-04-29 04:02:23,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:02:23" (1/1) ... [2021-04-29 04:02:23,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:02:23" (1/1) ... [2021-04-29 04:02:23,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:02:23" (1/1) ... [2021-04-29 04:02:23,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 04:02:23,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 04:02:23,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 04:02:23,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 04:02:23,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:02:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 04:02:23,437 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_14 given in one single declaration [2021-04-29 04:02:23,440 INFO L130 BoogieDeclarations]: Found specification of procedure set_14 [2021-04-29 04:02:23,440 INFO L138 BoogieDeclarations]: Found implementation of procedure set_14 [2021-04-29 04:02:23,441 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_15 given in one single declaration [2021-04-29 04:02:23,441 INFO L130 BoogieDeclarations]: Found specification of procedure set_15 [2021-04-29 04:02:23,441 INFO L138 BoogieDeclarations]: Found implementation of procedure set_15 [2021-04-29 04:02:23,441 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-04-29 04:02:23,442 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-04-29 04:02:23,442 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-04-29 04:02:23,442 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-04-29 04:02:23,442 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-04-29 04:02:23,442 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-04-29 04:02:23,443 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-04-29 04:02:23,443 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-04-29 04:02:23,444 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-04-29 04:02:23,444 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-04-29 04:02:23,444 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-04-29 04:02:23,445 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-04-29 04:02:23,445 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-04-29 04:02:23,445 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-04-29 04:02:23,448 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-04-29 04:02:23,448 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-04-29 04:02:23,448 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-04-29 04:02:23,448 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-04-29 04:02:23,449 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-04-29 04:02:23,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 04:02:23,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 04:02:23,449 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2021-04-29 04:02:23,449 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2021-04-29 04:02:23,450 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2021-04-29 04:02:23,450 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-04-29 04:02:23,450 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-04-29 04:02:23,450 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-04-29 04:02:23,450 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_13 given in one single declaration [2021-04-29 04:02:23,450 INFO L130 BoogieDeclarations]: Found specification of procedure set_13 [2021-04-29 04:02:23,451 INFO L138 BoogieDeclarations]: Found implementation of procedure set_13 [2021-04-29 04:02:23,451 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-04-29 04:02:23,451 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-04-29 04:02:23,451 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-04-29 04:02:23,451 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-04-29 04:02:23,452 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-04-29 04:02:23,452 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-04-29 04:02:23,452 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-04-29 04:02:23,452 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-04-29 04:02:23,452 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-04-29 04:02:23,452 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2021-04-29 04:02:23,453 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2021-04-29 04:02:23,453 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2021-04-29 04:02:23,453 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-04-29 04:02:23,453 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-04-29 04:02:23,453 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-04-29 04:02:23,454 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 04:02:23,733 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 04:02:23,734 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-04-29 04:02:23,737 INFO L202 PluginConnector]: Adding new model example_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 04:02:23 BoogieIcfgContainer [2021-04-29 04:02:23,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 04:02:23,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 04:02:23,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 04:02:23,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 04:02:23,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:02:23" (1/2) ... [2021-04-29 04:02:23,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616df54e and model type example_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 04:02:23, skipping insertion in model container [2021-04-29 04:02:23,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 04:02:23" (2/2) ... [2021-04-29 04:02:23,769 INFO L111 eAbstractionObserver]: Analyzing ICFG example_16.bpl [2021-04-29 04:02:23,778 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 04:02:23,783 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 04:02:23,784 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 04:02:24,212 INFO L149 ThreadInstanceAdder]: Constructed 256 joinOtherThreadTransitions. [2021-04-29 04:02:24,254 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-04-29 04:02:24,285 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 04:02:24,285 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 04:02:24,286 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 04:02:24,286 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 04:02:24,286 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 04:02:24,286 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 04:02:24,286 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 04:02:24,286 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 04:02:24,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 323 transitions, 1494 flow [2021-04-29 04:03:24,505 INFO L129 PetriNetUnfolder]: 458753/524339 cut-off events. [2021-04-29 04:03:24,505 INFO L130 PetriNetUnfolder]: For 524288/524288 co-relation queries the response was YES. [2021-04-29 04:03:28,043 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1048676 conditions, 524339 events. 458753/524339 cut-off events. For 524288/524288 co-relation queries the response was YES. Maximal size of possible extension queue 13495. Compared 2150347 event pairs, 0 based on Foata normal form. 0/524338 useless extension candidates. Maximal degree in co-relation 491597. Up to 102960 conditions per place. [2021-04-29 04:03:28,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 323 transitions, 1494 flow [2021-04-29 04:03:31,720 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 305 transitions, 1426 flow [2021-04-29 04:03:31,722 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:03:31,740 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 305 transitions, 1426 flow [2021-04-29 04:03:31,744 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 305 transitions, 1426 flow [2021-04-29 04:03:31,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 114 places, 305 transitions, 1426 flow [2021-04-29 04:04:41,078 INFO L129 PetriNetUnfolder]: 458753/524337 cut-off events. [2021-04-29 04:04:41,078 INFO L130 PetriNetUnfolder]: For 524288/524288 co-relation queries the response was YES. [2021-04-29 04:04:45,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1048674 conditions, 524337 events. 458753/524337 cut-off events. For 524288/524288 co-relation queries the response was YES. Maximal size of possible extension queue 13495. Compared 2255750 event pairs, 0 based on Foata normal form. 0/524337 useless extension candidates. Maximal degree in co-relation 491597. Up to 102960 conditions per place. [2021-04-29 04:04:58,311 INFO L146 LiptonReduction]: Number of co-enabled transitions 15840 [2021-04-29 04:04:59,036 INFO L158 LiptonReduction]: Checked pairs total: 4200 [2021-04-29 04:04:59,037 INFO L160 LiptonReduction]: Total number of compositions: 16 [2021-04-29 04:04:59,040 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 87319 [2021-04-29 04:05:59,545 INFO L129 PetriNetUnfolder]: 458753/524336 cut-off events. [2021-04-29 04:05:59,545 INFO L130 PetriNetUnfolder]: For 524288/524288 co-relation queries the response was YES. [2021-04-29 04:05:59,545 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:05:59,546 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:05:59,547 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-04-29 04:05:59,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:05:59,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1010853637, now seen corresponding path program 1 times [2021-04-29 04:05:59,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:05:59,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821113038] [2021-04-29 04:05:59,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:05:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:05:59,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:05:59,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:05:59,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:05:59,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 04:05:59,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:05:59,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:05:59,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:05:59,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821113038] [2021-04-29 04:05:59,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:05:59,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 04:05:59,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131249488] [2021-04-29 04:05:59,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 04:05:59,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:05:59,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 04:05:59,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 04:05:59,845 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-04-29 04:05:59,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 305 transitions, 1426 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:05:59,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:05:59,852 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-04-29 04:05:59,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:30,795 INFO L129 PetriNetUnfolder]: 235058/272818 cut-off events. [2021-04-29 04:06:30,795 INFO L130 PetriNetUnfolder]: For 366130/366130 co-relation queries the response was YES. [2021-04-29 04:06:32,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 550582 conditions, 272818 events. 235058/272818 cut-off events. For 366130/366130 co-relation queries the response was YES. Maximal size of possible extension queue 7060. Compared 1344731 event pairs, 0 based on Foata normal form. 27824/300626 useless extension candidates. Maximal degree in co-relation 491567. Up to 51480 conditions per place. [2021-04-29 04:06:34,795 INFO L132 encePairwiseOnDemand]: 328/339 looper letters, 6 selfloop transitions, 1 changer transitions 0/295 dead transitions. [2021-04-29 04:06:34,795 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 295 transitions, 1390 flow [2021-04-29 04:06:34,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 04:06:34,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 04:06:34,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-04-29 04:06:34,821 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-04-29 04:06:34,822 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-04-29 04:06:34,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-04-29 04:06:34,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:34,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-04-29 04:06:34,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 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) [2021-04-29 04:06:34,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:06:34,848 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:06:34,851 INFO L185 Difference]: Start difference. First operand has 114 places, 305 transitions, 1426 flow. Second operand 3 states and 983 transitions. [2021-04-29 04:06:34,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 295 transitions, 1390 flow [2021-04-29 04:06:56,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 295 transitions, 866 flow, removed 0 selfloop flow, removed 32 redundant places. [2021-04-29 04:06:56,301 INFO L241 Difference]: Finished difference. Result has 84 places, 295 transitions, 854 flow [2021-04-29 04:06:56,304 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=854, PETRI_PLACES=84, PETRI_TRANSITIONS=295} [2021-04-29 04:06:56,305 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -30 predicate places. [2021-04-29 04:06:56,305 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:56,305 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 295 transitions, 854 flow [2021-04-29 04:06:56,306 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 295 transitions, 854 flow [2021-04-29 04:06:56,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 295 transitions, 854 flow [2021-04-29 04:07:15,670 INFO L129 PetriNetUnfolder]: 235058/272818 cut-off events. [2021-04-29 04:07:15,671 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 04:07:17,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 272837 conditions, 272818 events. 235058/272818 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7060. Compared 1171342 event pairs, 0 based on Foata normal form. 0/272802 useless extension candidates. Maximal degree in co-relation 272812. Up to 51480 conditions per place. [2021-04-29 04:07:21,298 INFO L146 LiptonReduction]: Number of co-enabled transitions 15240 [2021-04-29 04:07:21,354 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:07:21,354 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:07:21,355 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 25050 [2021-04-29 04:07:21,362 INFO L480 AbstractCegarLoop]: Abstraction has has 84 places, 295 transitions, 854 flow [2021-04-29 04:07:21,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:07:21,364 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:07:21,364 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:07:21,364 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 04:07:21,365 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-04-29 04:07:21,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:07:21,365 INFO L82 PathProgramCache]: Analyzing trace with hash 735415583, now seen corresponding path program 1 times [2021-04-29 04:07:21,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:07:21,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971732604] [2021-04-29 04:07:21,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:07:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:07:21,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:07:21,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:07:21,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:07:21,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 04:07:21,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:07:21,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:07:21,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:07:21,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971732604] [2021-04-29 04:07:21,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:07:21,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 04:07:21,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673816210] [2021-04-29 04:07:21,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 04:07:21,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:07:21,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 04:07:21,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 04:07:21,417 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-04-29 04:07:21,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 295 transitions, 854 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:07:21,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:07:21,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-04-29 04:07:21,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:07:31,840 INFO L129 PetriNetUnfolder]: 135672/160521 cut-off events. [2021-04-29 04:07:31,841 INFO L130 PetriNetUnfolder]: For 17855/17855 co-relation queries the response was YES. [2021-04-29 04:07:32,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165486 conditions, 160521 events. 135672/160521 cut-off events. For 17855/17855 co-relation queries the response was YES. Maximal size of possible extension queue 4390. Compared 799982 event pairs, 0 based on Foata normal form. 12911/173416 useless extension candidates. Maximal degree in co-relation 165459. Up to 24024 conditions per place. [2021-04-29 04:07:33,156 INFO L132 encePairwiseOnDemand]: 329/339 looper letters, 7 selfloop transitions, 1 changer transitions 0/286 dead transitions. [2021-04-29 04:07:33,157 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 286 transitions, 843 flow [2021-04-29 04:07:33,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 04:07:33,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 04:07:33,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-04-29 04:07:33,160 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-04-29 04:07:33,161 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-04-29 04:07:33,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-04-29 04:07:33,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:07:33,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-04-29 04:07:33,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 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) [2021-04-29 04:07:33,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:07:33,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:07:33,170 INFO L185 Difference]: Start difference. First operand has 84 places, 295 transitions, 854 flow. Second operand 3 states and 983 transitions. [2021-04-29 04:07:33,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 286 transitions, 843 flow [2021-04-29 04:07:33,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 286 transitions, 842 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 04:07:33,241 INFO L241 Difference]: Finished difference. Result has 85 places, 286 transitions, 828 flow [2021-04-29 04:07:33,242 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=828, PETRI_PLACES=85, PETRI_TRANSITIONS=286} [2021-04-29 04:07:33,243 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -29 predicate places. [2021-04-29 04:07:33,243 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:07:33,243 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 286 transitions, 828 flow [2021-04-29 04:07:33,243 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 286 transitions, 828 flow [2021-04-29 04:07:33,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 286 transitions, 828 flow [2021-04-29 04:07:43,322 INFO L129 PetriNetUnfolder]: 135672/160521 cut-off events. [2021-04-29 04:07:43,323 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 04:07:43,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160541 conditions, 160521 events. 135672/160521 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4488. Compared 704685 event pairs, 0 based on Foata normal form. 0/160505 useless extension candidates. Maximal degree in co-relation 160518. Up to 24024 conditions per place. [2021-04-29 04:07:46,227 INFO L146 LiptonReduction]: Number of co-enabled transitions 14700 [2021-04-29 04:07:46,275 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:07:46,275 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:07:46,275 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13032 [2021-04-29 04:07:46,278 INFO L480 AbstractCegarLoop]: Abstraction has has 85 places, 286 transitions, 828 flow [2021-04-29 04:07:46,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:07:46,280 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:07:46,280 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:07:46,280 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 04:07:46,280 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-04-29 04:07:46,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:07:46,281 INFO L82 PathProgramCache]: Analyzing trace with hash 99714237, now seen corresponding path program 1 times [2021-04-29 04:07:46,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:07:46,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825692299] [2021-04-29 04:07:46,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:07:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:07:46,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:07:46,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:07:46,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:07:46,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 04:07:46,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:07:46,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:07:46,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:07:46,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825692299] [2021-04-29 04:07:46,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:07:46,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 04:07:46,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783137118] [2021-04-29 04:07:46,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 04:07:46,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:07:46,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 04:07:46,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 04:07:46,329 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-04-29 04:07:46,330 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 286 transitions, 828 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:07:46,330 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:07:46,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-04-29 04:07:46,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:07:55,894 INFO L129 PetriNetUnfolder]: 125350/149106 cut-off events. [2021-04-29 04:07:55,894 INFO L130 PetriNetUnfolder]: For 10756/10756 co-relation queries the response was YES. [2021-04-29 04:07:56,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158791 conditions, 149106 events. 125350/149106 cut-off events. For 10756/10756 co-relation queries the response was YES. Maximal size of possible extension queue 4390. Compared 747321 event pairs, 0 based on Foata normal form. 1093/150183 useless extension candidates. Maximal degree in co-relation 158766. Up to 24024 conditions per place. [2021-04-29 04:07:57,480 INFO L132 encePairwiseOnDemand]: 333/339 looper letters, 11 selfloop transitions, 1 changer transitions 0/281 dead transitions. [2021-04-29 04:07:57,480 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 281 transitions, 837 flow [2021-04-29 04:07:57,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 04:07:57,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 04:07:57,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-04-29 04:07:57,483 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-04-29 04:07:57,483 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-04-29 04:07:57,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-04-29 04:07:57,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:07:57,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-04-29 04:07:57,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 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) [2021-04-29 04:07:57,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:07:57,491 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:07:57,491 INFO L185 Difference]: Start difference. First operand has 85 places, 286 transitions, 828 flow. Second operand 3 states and 983 transitions. [2021-04-29 04:07:57,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 281 transitions, 837 flow [2021-04-29 04:07:57,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 281 transitions, 836 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 04:07:57,556 INFO L241 Difference]: Finished difference. Result has 86 places, 281 transitions, 814 flow [2021-04-29 04:07:57,557 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=814, PETRI_PLACES=86, PETRI_TRANSITIONS=281} [2021-04-29 04:07:57,557 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -28 predicate places. [2021-04-29 04:07:57,557 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:07:57,557 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 281 transitions, 814 flow [2021-04-29 04:07:57,558 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 281 transitions, 814 flow [2021-04-29 04:07:57,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 281 transitions, 814 flow [2021-04-29 04:08:06,304 INFO L129 PetriNetUnfolder]: 125350/149106 cut-off events. [2021-04-29 04:08:06,304 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 04:08:06,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149127 conditions, 149106 events. 125350/149106 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4488. Compared 665752 event pairs, 0 based on Foata normal form. 0/149090 useless extension candidates. Maximal degree in co-relation 149112. Up to 24024 conditions per place. [2021-04-29 04:08:09,182 INFO L146 LiptonReduction]: Number of co-enabled transitions 14400 [2021-04-29 04:08:09,229 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:08:09,229 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:08:09,230 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11673 [2021-04-29 04:08:09,233 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 281 transitions, 814 flow [2021-04-29 04:08:09,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:09,235 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:08:09,235 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:08:09,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-29 04:08:09,235 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-04-29 04:08:09,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:08:09,236 INFO L82 PathProgramCache]: Analyzing trace with hash 263353149, now seen corresponding path program 1 times [2021-04-29 04:08:09,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:08:09,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519103748] [2021-04-29 04:08:09,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:08:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:08:09,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:09,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:09,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:09,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 04:08:09,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:09,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:09,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:08:09,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519103748] [2021-04-29 04:08:09,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:08:09,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 04:08:09,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780358242] [2021-04-29 04:08:09,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 04:08:09,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:08:09,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 04:08:09,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 04:08:09,281 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-04-29 04:08:09,283 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 281 transitions, 814 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:09,283 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:08:09,283 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-04-29 04:08:09,283 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:08:16,596 INFO L129 PetriNetUnfolder]: 96298/116257 cut-off events. [2021-04-29 04:08:16,597 INFO L130 PetriNetUnfolder]: For 9962/9962 co-relation queries the response was YES. [2021-04-29 04:08:17,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122940 conditions, 116257 events. 96298/116257 cut-off events. For 9962/9962 co-relation queries the response was YES. Maximal size of possible extension queue 4390. Compared 596259 event pairs, 0 based on Foata normal form. 3302/119543 useless extension candidates. Maximal degree in co-relation 122924. Up to 21840 conditions per place. [2021-04-29 04:08:17,807 INFO L132 encePairwiseOnDemand]: 331/339 looper letters, 9 selfloop transitions, 1 changer transitions 0/274 dead transitions. [2021-04-29 04:08:17,807 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 274 transitions, 813 flow [2021-04-29 04:08:17,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 04:08:17,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 04:08:17,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-04-29 04:08:17,811 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-04-29 04:08:17,811 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-04-29 04:08:17,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-04-29 04:08:17,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:08:17,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-04-29 04:08:17,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 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) [2021-04-29 04:08:17,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:08:17,819 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:08:17,820 INFO L185 Difference]: Start difference. First operand has 86 places, 281 transitions, 814 flow. Second operand 3 states and 983 transitions. [2021-04-29 04:08:17,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 274 transitions, 813 flow [2021-04-29 04:08:17,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 274 transitions, 812 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 04:08:17,875 INFO L241 Difference]: Finished difference. Result has 87 places, 274 transitions, 794 flow [2021-04-29 04:08:17,876 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=794, PETRI_PLACES=87, PETRI_TRANSITIONS=274} [2021-04-29 04:08:17,876 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -27 predicate places. [2021-04-29 04:08:17,876 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:08:17,876 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 274 transitions, 794 flow [2021-04-29 04:08:17,877 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 274 transitions, 794 flow [2021-04-29 04:08:17,878 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 274 transitions, 794 flow [2021-04-29 04:08:24,836 INFO L129 PetriNetUnfolder]: 96298/116257 cut-off events. [2021-04-29 04:08:24,837 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 04:08:25,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116279 conditions, 116257 events. 96298/116257 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4488. Compared 532657 event pairs, 0 based on Foata normal form. 0/116241 useless extension candidates. Maximal degree in co-relation 116264. Up to 21840 conditions per place. [2021-04-29 04:08:26,605 INFO L146 LiptonReduction]: Number of co-enabled transitions 13980 [2021-04-29 04:08:26,637 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:08:26,637 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:08:26,637 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8761 [2021-04-29 04:08:26,640 INFO L480 AbstractCegarLoop]: Abstraction has has 87 places, 274 transitions, 794 flow [2021-04-29 04:08:26,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:26,641 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:08:26,641 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:08:26,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-29 04:08:26,641 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-04-29 04:08:26,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:08:26,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1542445459, now seen corresponding path program 1 times [2021-04-29 04:08:26,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:08:26,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008588373] [2021-04-29 04:08:26,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:08:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:08:26,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:26,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:26,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:26,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 04:08:26,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:26,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:08:26,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008588373] [2021-04-29 04:08:26,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:08:26,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 04:08:26,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615707084] [2021-04-29 04:08:26,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 04:08:26,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:08:26,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 04:08:26,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 04:08:26,689 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-04-29 04:08:26,690 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 274 transitions, 794 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:26,691 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:08:26,691 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-04-29 04:08:26,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:08:31,930 INFO L129 PetriNetUnfolder]: 70668/86633 cut-off events. [2021-04-29 04:08:31,930 INFO L130 PetriNetUnfolder]: For 7684/7684 co-relation queries the response was YES. [2021-04-29 04:08:32,317 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91601 conditions, 86633 events. 70668/86633 cut-off events. For 7684/7684 co-relation queries the response was YES. Maximal size of possible extension queue 4390. Compared 449419 event pairs, 0 based on Foata normal form. 2740/89357 useless extension candidates. Maximal degree in co-relation 91585. Up to 21840 conditions per place. [2021-04-29 04:08:33,006 INFO L132 encePairwiseOnDemand]: 330/339 looper letters, 8 selfloop transitions, 1 changer transitions 0/266 dead transitions. [2021-04-29 04:08:33,007 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 266 transitions, 788 flow [2021-04-29 04:08:33,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 04:08:33,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 04:08:33,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-04-29 04:08:33,015 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-04-29 04:08:33,015 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-04-29 04:08:33,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-04-29 04:08:33,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:08:33,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-04-29 04:08:33,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 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) [2021-04-29 04:08:33,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:08:33,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:08:33,024 INFO L185 Difference]: Start difference. First operand has 87 places, 274 transitions, 794 flow. Second operand 3 states and 983 transitions. [2021-04-29 04:08:33,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 266 transitions, 788 flow [2021-04-29 04:08:33,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 266 transitions, 787 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 04:08:33,060 INFO L241 Difference]: Finished difference. Result has 88 places, 266 transitions, 771 flow [2021-04-29 04:08:33,060 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=771, PETRI_PLACES=88, PETRI_TRANSITIONS=266} [2021-04-29 04:08:33,061 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -26 predicate places. [2021-04-29 04:08:33,063 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:08:33,064 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 266 transitions, 771 flow [2021-04-29 04:08:33,068 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 266 transitions, 771 flow [2021-04-29 04:08:33,069 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 88 places, 266 transitions, 771 flow [2021-04-29 04:08:38,058 INFO L129 PetriNetUnfolder]: 70668/86633 cut-off events. [2021-04-29 04:08:38,058 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 04:08:38,382 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86656 conditions, 86633 events. 70668/86633 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4488. Compared 411624 event pairs, 0 based on Foata normal form. 0/86617 useless extension candidates. Maximal degree in co-relation 86641. Up to 21840 conditions per place. [2021-04-29 04:08:39,333 INFO L146 LiptonReduction]: Number of co-enabled transitions 13500 [2021-04-29 04:08:39,372 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:08:39,372 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:08:39,373 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6310 [2021-04-29 04:08:39,375 INFO L480 AbstractCegarLoop]: Abstraction has has 88 places, 266 transitions, 771 flow [2021-04-29 04:08:39,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:39,376 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:08:39,376 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:08:39,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-29 04:08:39,376 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-04-29 04:08:39,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:08:39,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1738023031, now seen corresponding path program 1 times [2021-04-29 04:08:39,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:08:39,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170886815] [2021-04-29 04:08:39,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:08:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:08:39,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:39,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:39,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:39,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 04:08:39,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:39,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:39,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:08:39,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170886815] [2021-04-29 04:08:39,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:08:39,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 04:08:39,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107944461] [2021-04-29 04:08:39,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 04:08:39,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:08:39,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 04:08:39,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 04:08:39,413 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-04-29 04:08:39,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 266 transitions, 771 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:39,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:08:39,414 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-04-29 04:08:39,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:08:41,001 INFO L129 PetriNetUnfolder]: 22146/28352 cut-off events. [2021-04-29 04:08:41,001 INFO L130 PetriNetUnfolder]: For 5582/5582 co-relation queries the response was YES. [2021-04-29 04:08:41,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28953 conditions, 28352 events. 22146/28352 cut-off events. For 5582/5582 co-relation queries the response was YES. Maximal size of possible extension queue 1373. Compared 144765 event pairs, 0 based on Foata normal form. 5006/33342 useless extension candidates. Maximal degree in co-relation 28937. Up to 5460 conditions per place. [2021-04-29 04:08:41,220 INFO L132 encePairwiseOnDemand]: 326/339 looper letters, 4 selfloop transitions, 1 changer transitions 0/254 dead transitions. [2021-04-29 04:08:41,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 254 transitions, 745 flow [2021-04-29 04:08:41,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 04:08:41,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 04:08:41,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-04-29 04:08:41,224 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-04-29 04:08:41,224 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-04-29 04:08:41,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-04-29 04:08:41,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:08:41,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-04-29 04:08:41,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 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) [2021-04-29 04:08:41,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:08:41,231 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:08:41,232 INFO L185 Difference]: Start difference. First operand has 88 places, 266 transitions, 771 flow. Second operand 3 states and 983 transitions. [2021-04-29 04:08:41,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 254 transitions, 745 flow [2021-04-29 04:08:41,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 254 transitions, 744 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 04:08:41,240 INFO L241 Difference]: Finished difference. Result has 89 places, 254 transitions, 736 flow [2021-04-29 04:08:41,240 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=736, PETRI_PLACES=89, PETRI_TRANSITIONS=254} [2021-04-29 04:08:41,240 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -25 predicate places. [2021-04-29 04:08:41,240 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:08:41,241 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 254 transitions, 736 flow [2021-04-29 04:08:41,241 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 254 transitions, 736 flow [2021-04-29 04:08:41,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 254 transitions, 736 flow [2021-04-29 04:08:42,476 INFO L129 PetriNetUnfolder]: 22146/28352 cut-off events. [2021-04-29 04:08:42,476 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 04:08:42,664 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28376 conditions, 28352 events. 22146/28352 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1401. Compared 133317 event pairs, 0 based on Foata normal form. 0/28336 useless extension candidates. Maximal degree in co-relation 28361. Up to 5460 conditions per place. [2021-04-29 04:08:43,049 INFO L146 LiptonReduction]: Number of co-enabled transitions 12780 [2021-04-29 04:08:43,078 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:08:43,078 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:08:43,078 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1838 [2021-04-29 04:08:43,081 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 254 transitions, 736 flow [2021-04-29 04:08:43,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:43,082 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:08:43,082 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:08:43,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-29 04:08:43,082 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-04-29 04:08:43,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:08:43,083 INFO L82 PathProgramCache]: Analyzing trace with hash -93083391, now seen corresponding path program 1 times [2021-04-29 04:08:43,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:08:43,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397026454] [2021-04-29 04:08:43,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:08:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:08:43,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:43,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:43,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:43,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 04:08:43,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:43,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:43,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:08:43,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397026454] [2021-04-29 04:08:43,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:08:43,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 04:08:43,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292874465] [2021-04-29 04:08:43,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 04:08:43,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:08:43,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 04:08:43,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 04:08:43,119 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-04-29 04:08:43,121 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 254 transitions, 736 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:43,121 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:08:43,121 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-04-29 04:08:43,121 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:08:43,706 INFO L129 PetriNetUnfolder]: 8415/11362 cut-off events. [2021-04-29 04:08:43,706 INFO L130 PetriNetUnfolder]: For 1959/1959 co-relation queries the response was YES. [2021-04-29 04:08:43,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11964 conditions, 11362 events. 8415/11362 cut-off events. For 1959/1959 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 57748 event pairs, 0 based on Foata normal form. 1383/12729 useless extension candidates. Maximal degree in co-relation 11948. Up to 1820 conditions per place. [2021-04-29 04:08:43,776 INFO L132 encePairwiseOnDemand]: 327/339 looper letters, 5 selfloop transitions, 1 changer transitions 0/243 dead transitions. [2021-04-29 04:08:43,776 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 243 transitions, 715 flow [2021-04-29 04:08:43,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 04:08:43,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 04:08:43,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-04-29 04:08:43,779 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-04-29 04:08:43,779 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-04-29 04:08:43,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-04-29 04:08:43,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:08:43,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-04-29 04:08:43,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 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) [2021-04-29 04:08:43,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:08:43,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:08:43,786 INFO L185 Difference]: Start difference. First operand has 89 places, 254 transitions, 736 flow. Second operand 3 states and 983 transitions. [2021-04-29 04:08:43,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 243 transitions, 715 flow [2021-04-29 04:08:43,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 243 transitions, 714 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 04:08:43,795 INFO L241 Difference]: Finished difference. Result has 90 places, 243 transitions, 704 flow [2021-04-29 04:08:43,795 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=704, PETRI_PLACES=90, PETRI_TRANSITIONS=243} [2021-04-29 04:08:43,795 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -24 predicate places. [2021-04-29 04:08:43,795 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:08:43,796 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 243 transitions, 704 flow [2021-04-29 04:08:43,796 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 243 transitions, 704 flow [2021-04-29 04:08:43,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 243 transitions, 704 flow [2021-04-29 04:08:44,254 INFO L129 PetriNetUnfolder]: 8415/11362 cut-off events. [2021-04-29 04:08:44,255 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 04:08:44,290 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11387 conditions, 11362 events. 8415/11362 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 53387 event pairs, 0 based on Foata normal form. 0/11346 useless extension candidates. Maximal degree in co-relation 11372. Up to 1820 conditions per place. [2021-04-29 04:08:44,400 INFO L146 LiptonReduction]: Number of co-enabled transitions 12120 [2021-04-29 04:08:44,424 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:08:44,424 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:08:44,424 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 629 [2021-04-29 04:08:44,426 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 243 transitions, 704 flow [2021-04-29 04:08:44,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:44,427 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:08:44,427 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:08:44,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-29 04:08:44,427 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-04-29 04:08:44,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:08:44,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1600861145, now seen corresponding path program 1 times [2021-04-29 04:08:44,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:08:44,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295511477] [2021-04-29 04:08:44,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:08:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:08:44,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:44,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:44,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:44,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 04:08:44,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:44,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:44,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:08:44,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295511477] [2021-04-29 04:08:44,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:08:44,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 04:08:44,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672729466] [2021-04-29 04:08:44,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 04:08:44,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:08:44,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 04:08:44,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 04:08:44,460 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-04-29 04:08:44,461 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 243 transitions, 704 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:44,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:08:44,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-04-29 04:08:44,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:08:44,675 INFO L129 PetriNetUnfolder]: 2037/3001 cut-off events. [2021-04-29 04:08:44,675 INFO L130 PetriNetUnfolder]: For 795/795 co-relation queries the response was YES. [2021-04-29 04:08:44,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3149 conditions, 3001 events. 2037/3001 cut-off events. For 795/795 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 13962 event pairs, 0 based on Foata normal form. 674/3659 useless extension candidates. Maximal degree in co-relation 3133. Up to 315 conditions per place. [2021-04-29 04:08:44,695 INFO L132 encePairwiseOnDemand]: 325/339 looper letters, 3 selfloop transitions, 1 changer transitions 0/230 dead transitions. [2021-04-29 04:08:44,695 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 230 transitions, 673 flow [2021-04-29 04:08:44,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 04:08:44,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 04:08:44,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-04-29 04:08:44,698 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-04-29 04:08:44,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-04-29 04:08:44,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-04-29 04:08:44,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:08:44,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-04-29 04:08:44,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 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) [2021-04-29 04:08:44,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:08:44,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:08:44,705 INFO L185 Difference]: Start difference. First operand has 90 places, 243 transitions, 704 flow. Second operand 3 states and 983 transitions. [2021-04-29 04:08:44,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 230 transitions, 673 flow [2021-04-29 04:08:44,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 230 transitions, 672 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 04:08:44,712 INFO L241 Difference]: Finished difference. Result has 91 places, 230 transitions, 666 flow [2021-04-29 04:08:44,712 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=666, PETRI_PLACES=91, PETRI_TRANSITIONS=230} [2021-04-29 04:08:44,712 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -23 predicate places. [2021-04-29 04:08:44,712 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:08:44,713 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 230 transitions, 666 flow [2021-04-29 04:08:44,713 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 230 transitions, 666 flow [2021-04-29 04:08:44,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 230 transitions, 666 flow [2021-04-29 04:08:44,863 INFO L129 PetriNetUnfolder]: 2037/3001 cut-off events. [2021-04-29 04:08:44,863 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 04:08:44,868 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3027 conditions, 3001 events. 2037/3001 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12833 event pairs, 0 based on Foata normal form. 0/2985 useless extension candidates. Maximal degree in co-relation 3012. Up to 315 conditions per place. [2021-04-29 04:08:44,890 INFO L146 LiptonReduction]: Number of co-enabled transitions 11340 [2021-04-29 04:08:44,920 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:08:44,920 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:08:44,920 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 208 [2021-04-29 04:08:44,922 INFO L480 AbstractCegarLoop]: Abstraction has has 91 places, 230 transitions, 666 flow [2021-04-29 04:08:44,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:44,923 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:08:44,923 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:08:44,923 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-29 04:08:44,923 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-04-29 04:08:44,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:08:44,924 INFO L82 PathProgramCache]: Analyzing trace with hash -944306193, now seen corresponding path program 1 times [2021-04-29 04:08:44,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:08:44,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379720700] [2021-04-29 04:08:44,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:08:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:08:44,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:44,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:44,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:44,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 04:08:44,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:44,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:44,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:08:44,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379720700] [2021-04-29 04:08:44,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:08:44,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 04:08:44,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546826297] [2021-04-29 04:08:44,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 04:08:44,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:08:44,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 04:08:44,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 04:08:44,968 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-04-29 04:08:44,970 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 230 transitions, 666 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:44,970 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:08:44,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-04-29 04:08:44,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:08:45,213 INFO L129 PetriNetUnfolder]: 1988/2944 cut-off events. [2021-04-29 04:08:45,213 INFO L130 PetriNetUnfolder]: For 241/241 co-relation queries the response was YES. [2021-04-29 04:08:45,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3205 conditions, 2944 events. 1988/2944 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 13656 event pairs, 0 based on Foata normal form. 8/2936 useless extension candidates. Maximal degree in co-relation 3188. Up to 315 conditions per place. [2021-04-29 04:08:45,234 INFO L132 encePairwiseOnDemand]: 336/339 looper letters, 14 selfloop transitions, 1 changer transitions 0/228 dead transitions. [2021-04-29 04:08:45,234 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 228 transitions, 690 flow [2021-04-29 04:08:45,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 04:08:45,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 04:08:45,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-04-29 04:08:45,236 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-04-29 04:08:45,237 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-04-29 04:08:45,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-04-29 04:08:45,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:08:45,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-04-29 04:08:45,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 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) [2021-04-29 04:08:45,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:08:45,243 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:08:45,243 INFO L185 Difference]: Start difference. First operand has 91 places, 230 transitions, 666 flow. Second operand 3 states and 983 transitions. [2021-04-29 04:08:45,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 228 transitions, 690 flow [2021-04-29 04:08:45,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 228 transitions, 689 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 04:08:45,250 INFO L241 Difference]: Finished difference. Result has 92 places, 228 transitions, 661 flow [2021-04-29 04:08:45,250 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=661, PETRI_PLACES=92, PETRI_TRANSITIONS=228} [2021-04-29 04:08:45,250 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -22 predicate places. [2021-04-29 04:08:45,251 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:08:45,251 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 228 transitions, 661 flow [2021-04-29 04:08:45,251 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 228 transitions, 661 flow [2021-04-29 04:08:45,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 228 transitions, 661 flow [2021-04-29 04:08:45,390 INFO L129 PetriNetUnfolder]: 1988/2944 cut-off events. [2021-04-29 04:08:45,391 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 04:08:45,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2971 conditions, 2944 events. 1988/2944 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12681 event pairs, 0 based on Foata normal form. 0/2928 useless extension candidates. Maximal degree in co-relation 2962. Up to 315 conditions per place. [2021-04-29 04:08:45,433 INFO L146 LiptonReduction]: Number of co-enabled transitions 11220 [2021-04-29 04:08:45,454 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:08:45,454 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:08:45,455 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 204 [2021-04-29 04:08:45,456 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 228 transitions, 661 flow [2021-04-29 04:08:45,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:45,457 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:08:45,458 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:08:45,458 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-29 04:08:45,458 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-04-29 04:08:45,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:08:45,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1943587507, now seen corresponding path program 1 times [2021-04-29 04:08:45,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:08:45,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350451799] [2021-04-29 04:08:45,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:08:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:08:45,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:45,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:45,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:45,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 04:08:45,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:45,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:45,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:08:45,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350451799] [2021-04-29 04:08:45,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:08:45,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 04:08:45,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649676106] [2021-04-29 04:08:45,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 04:08:45,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:08:45,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 04:08:45,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 04:08:45,489 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-04-29 04:08:45,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 228 transitions, 661 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:45,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:08:45,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-04-29 04:08:45,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:08:45,677 INFO L129 PetriNetUnfolder]: 1707/2600 cut-off events. [2021-04-29 04:08:45,677 INFO L130 PetriNetUnfolder]: For 234/234 co-relation queries the response was YES. [2021-04-29 04:08:45,684 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2806 conditions, 2600 events. 1707/2600 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12335 event pairs, 0 based on Foata normal form. 57/2641 useless extension candidates. Maximal degree in co-relation 2796. Up to 315 conditions per place. [2021-04-29 04:08:45,691 INFO L132 encePairwiseOnDemand]: 334/339 looper letters, 12 selfloop transitions, 1 changer transitions 0/224 dead transitions. [2021-04-29 04:08:45,691 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 224 transitions, 675 flow [2021-04-29 04:08:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 04:08:45,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 04:08:45,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-04-29 04:08:45,693 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-04-29 04:08:45,693 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-04-29 04:08:45,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-04-29 04:08:45,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:08:45,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-04-29 04:08:45,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 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) [2021-04-29 04:08:45,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:08:45,699 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:08:45,699 INFO L185 Difference]: Start difference. First operand has 92 places, 228 transitions, 661 flow. Second operand 3 states and 983 transitions. [2021-04-29 04:08:45,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 224 transitions, 675 flow [2021-04-29 04:08:45,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 224 transitions, 674 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 04:08:45,705 INFO L241 Difference]: Finished difference. Result has 93 places, 224 transitions, 650 flow [2021-04-29 04:08:45,706 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=650, PETRI_PLACES=93, PETRI_TRANSITIONS=224} [2021-04-29 04:08:45,706 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -21 predicate places. [2021-04-29 04:08:45,706 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:08:45,706 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 224 transitions, 650 flow [2021-04-29 04:08:45,706 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 224 transitions, 650 flow [2021-04-29 04:08:45,708 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 224 transitions, 650 flow [2021-04-29 04:08:45,820 INFO L129 PetriNetUnfolder]: 1707/2600 cut-off events. [2021-04-29 04:08:45,820 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 04:08:45,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2628 conditions, 2600 events. 1707/2600 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11513 event pairs, 0 based on Foata normal form. 0/2584 useless extension candidates. Maximal degree in co-relation 2619. Up to 315 conditions per place. [2021-04-29 04:08:45,848 INFO L146 LiptonReduction]: Number of co-enabled transitions 10980 [2021-04-29 04:08:45,869 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:08:45,869 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:08:45,869 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 163 [2021-04-29 04:08:45,871 INFO L480 AbstractCegarLoop]: Abstraction has has 93 places, 224 transitions, 650 flow [2021-04-29 04:08:45,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:45,872 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:08:45,872 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:08:45,872 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-04-29 04:08:45,872 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-04-29 04:08:45,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:08:45,872 INFO L82 PathProgramCache]: Analyzing trace with hash 651556581, now seen corresponding path program 1 times [2021-04-29 04:08:45,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:08:45,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165680965] [2021-04-29 04:08:45,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:08:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:08:45,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:45,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:45,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:45,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 04:08:45,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:45,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:45,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:08:45,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165680965] [2021-04-29 04:08:45,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:08:45,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 04:08:45,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561890305] [2021-04-29 04:08:45,902 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 04:08:45,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:08:45,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 04:08:45,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 04:08:45,904 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-04-29 04:08:45,905 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 224 transitions, 650 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:45,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:08:45,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-04-29 04:08:45,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:08:46,074 INFO L129 PetriNetUnfolder]: 1702/2594 cut-off events. [2021-04-29 04:08:46,074 INFO L130 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2021-04-29 04:08:46,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2816 conditions, 2594 events. 1702/2594 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12449 event pairs, 0 based on Foata normal form. 1/2579 useless extension candidates. Maximal degree in co-relation 2805. Up to 315 conditions per place. [2021-04-29 04:08:46,090 INFO L132 encePairwiseOnDemand]: 337/339 looper letters, 15 selfloop transitions, 1 changer transitions 0/223 dead transitions. [2021-04-29 04:08:46,090 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 223 transitions, 679 flow [2021-04-29 04:08:46,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 04:08:46,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 04:08:46,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-04-29 04:08:46,098 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-04-29 04:08:46,098 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-04-29 04:08:46,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-04-29 04:08:46,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:08:46,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-04-29 04:08:46,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 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) [2021-04-29 04:08:46,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:08:46,104 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:08:46,104 INFO L185 Difference]: Start difference. First operand has 93 places, 224 transitions, 650 flow. Second operand 3 states and 983 transitions. [2021-04-29 04:08:46,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 223 transitions, 679 flow [2021-04-29 04:08:46,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 223 transitions, 678 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 04:08:46,110 INFO L241 Difference]: Finished difference. Result has 94 places, 223 transitions, 648 flow [2021-04-29 04:08:46,110 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=648, PETRI_PLACES=94, PETRI_TRANSITIONS=223} [2021-04-29 04:08:46,110 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -20 predicate places. [2021-04-29 04:08:46,110 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:08:46,111 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 223 transitions, 648 flow [2021-04-29 04:08:46,111 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 223 transitions, 648 flow [2021-04-29 04:08:46,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 223 transitions, 648 flow [2021-04-29 04:08:46,240 INFO L129 PetriNetUnfolder]: 1702/2594 cut-off events. [2021-04-29 04:08:46,240 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 04:08:46,250 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2623 conditions, 2594 events. 1702/2594 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11496 event pairs, 0 based on Foata normal form. 0/2578 useless extension candidates. Maximal degree in co-relation 2616. Up to 315 conditions per place. [2021-04-29 04:08:46,282 INFO L146 LiptonReduction]: Number of co-enabled transitions 10920 [2021-04-29 04:08:46,305 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:08:46,305 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:08:46,305 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 195 [2021-04-29 04:08:46,307 INFO L480 AbstractCegarLoop]: Abstraction has has 94 places, 223 transitions, 648 flow [2021-04-29 04:08:46,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:46,308 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:08:46,308 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:08:46,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-04-29 04:08:46,308 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-04-29 04:08:46,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:08:46,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1894982511, now seen corresponding path program 1 times [2021-04-29 04:08:46,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:08:46,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415200282] [2021-04-29 04:08:46,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:08:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:08:46,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:46,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:46,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:46,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 04:08:46,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:46,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:46,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:08:46,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415200282] [2021-04-29 04:08:46,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:08:46,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 04:08:46,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705891044] [2021-04-29 04:08:46,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 04:08:46,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:08:46,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 04:08:46,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 04:08:46,336 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-04-29 04:08:46,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 223 transitions, 648 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:46,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:08:46,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-04-29 04:08:46,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:08:46,488 INFO L129 PetriNetUnfolder]: 1285/2045 cut-off events. [2021-04-29 04:08:46,488 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2021-04-29 04:08:46,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2197 conditions, 2045 events. 1285/2045 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9935 event pairs, 0 based on Foata normal form. 71/2100 useless extension candidates. Maximal degree in co-relation 2189. Up to 315 conditions per place. [2021-04-29 04:08:46,498 INFO L132 encePairwiseOnDemand]: 332/339 looper letters, 10 selfloop transitions, 1 changer transitions 0/217 dead transitions. [2021-04-29 04:08:46,499 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 217 transitions, 652 flow [2021-04-29 04:08:46,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 04:08:46,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 04:08:46,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-04-29 04:08:46,501 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-04-29 04:08:46,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-04-29 04:08:46,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-04-29 04:08:46,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:08:46,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-04-29 04:08:46,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 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) [2021-04-29 04:08:46,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:08:46,506 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:08:46,506 INFO L185 Difference]: Start difference. First operand has 94 places, 223 transitions, 648 flow. Second operand 3 states and 983 transitions. [2021-04-29 04:08:46,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 217 transitions, 652 flow [2021-04-29 04:08:46,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 217 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 04:08:46,517 INFO L241 Difference]: Finished difference. Result has 95 places, 217 transitions, 631 flow [2021-04-29 04:08:46,517 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=631, PETRI_PLACES=95, PETRI_TRANSITIONS=217} [2021-04-29 04:08:46,518 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -19 predicate places. [2021-04-29 04:08:46,518 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:08:46,518 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 217 transitions, 631 flow [2021-04-29 04:08:46,518 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 217 transitions, 631 flow [2021-04-29 04:08:46,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 95 places, 217 transitions, 631 flow [2021-04-29 04:08:46,656 INFO L129 PetriNetUnfolder]: 1285/2045 cut-off events. [2021-04-29 04:08:46,656 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 04:08:46,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2075 conditions, 2045 events. 1285/2045 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9328 event pairs, 0 based on Foata normal form. 0/2029 useless extension candidates. Maximal degree in co-relation 2068. Up to 315 conditions per place. [2021-04-29 04:08:46,686 INFO L146 LiptonReduction]: Number of co-enabled transitions 10560 [2021-04-29 04:08:46,738 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:08:46,738 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:08:46,739 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 221 [2021-04-29 04:08:46,741 INFO L480 AbstractCegarLoop]: Abstraction has has 95 places, 217 transitions, 631 flow [2021-04-29 04:08:46,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:46,742 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:08:46,742 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:08:46,742 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-04-29 04:08:46,743 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-04-29 04:08:46,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:08:46,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1199666469, now seen corresponding path program 1 times [2021-04-29 04:08:46,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:08:46,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142965652] [2021-04-29 04:08:46,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:08:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:08:46,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:46,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:46,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:46,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 04:08:46,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:46,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:46,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:08:46,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142965652] [2021-04-29 04:08:46,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:08:46,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 04:08:46,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062294838] [2021-04-29 04:08:46,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 04:08:46,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:08:46,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 04:08:46,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 04:08:46,801 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-04-29 04:08:46,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 217 transitions, 631 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:46,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:08:46,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-04-29 04:08:46,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:08:46,977 INFO L129 PetriNetUnfolder]: 1240/1985 cut-off events. [2021-04-29 04:08:46,977 INFO L130 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2021-04-29 04:08:46,984 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2138 conditions, 1985 events. 1240/1985 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9603 event pairs, 0 based on Foata normal form. 10/1979 useless extension candidates. Maximal degree in co-relation 2130. Up to 315 conditions per place. [2021-04-29 04:08:46,992 INFO L132 encePairwiseOnDemand]: 335/339 looper letters, 13 selfloop transitions, 1 changer transitions 0/214 dead transitions. [2021-04-29 04:08:46,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 214 transitions, 650 flow [2021-04-29 04:08:46,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 04:08:46,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 04:08:46,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-04-29 04:08:46,995 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-04-29 04:08:46,995 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-04-29 04:08:46,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-04-29 04:08:46,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:08:46,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-04-29 04:08:46,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 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) [2021-04-29 04:08:47,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:08:47,001 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:08:47,001 INFO L185 Difference]: Start difference. First operand has 95 places, 217 transitions, 631 flow. Second operand 3 states and 983 transitions. [2021-04-29 04:08:47,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 214 transitions, 650 flow [2021-04-29 04:08:47,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 214 transitions, 649 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 04:08:47,007 INFO L241 Difference]: Finished difference. Result has 96 places, 214 transitions, 623 flow [2021-04-29 04:08:47,007 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=623, PETRI_PLACES=96, PETRI_TRANSITIONS=214} [2021-04-29 04:08:47,007 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -18 predicate places. [2021-04-29 04:08:47,007 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:08:47,008 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 214 transitions, 623 flow [2021-04-29 04:08:47,008 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 214 transitions, 623 flow [2021-04-29 04:08:47,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 214 transitions, 623 flow [2021-04-29 04:08:47,104 INFO L129 PetriNetUnfolder]: 1240/1985 cut-off events. [2021-04-29 04:08:47,104 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 04:08:47,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2016 conditions, 1985 events. 1240/1985 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9132 event pairs, 0 based on Foata normal form. 0/1969 useless extension candidates. Maximal degree in co-relation 2009. Up to 315 conditions per place. [2021-04-29 04:08:47,123 INFO L146 LiptonReduction]: Number of co-enabled transitions 10380 [2021-04-29 04:08:47,144 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:08:47,144 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:08:47,145 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 138 [2021-04-29 04:08:47,146 INFO L480 AbstractCegarLoop]: Abstraction has has 96 places, 214 transitions, 623 flow [2021-04-29 04:08:47,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:47,147 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:08:47,147 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:08:47,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-04-29 04:08:47,147 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-04-29 04:08:47,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:08:47,148 INFO L82 PathProgramCache]: Analyzing trace with hash -619577913, now seen corresponding path program 1 times [2021-04-29 04:08:47,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:08:47,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721939006] [2021-04-29 04:08:47,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:08:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:08:47,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:47,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:47,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:47,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 04:08:47,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:47,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:47,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:08:47,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721939006] [2021-04-29 04:08:47,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:08:47,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 04:08:47,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419715876] [2021-04-29 04:08:47,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 04:08:47,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:08:47,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 04:08:47,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 04:08:47,170 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-04-29 04:08:47,171 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 214 transitions, 623 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:47,171 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:08:47,171 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-04-29 04:08:47,171 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:08:47,217 INFO L129 PetriNetUnfolder]: 120/305 cut-off events. [2021-04-29 04:08:47,217 INFO L130 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2021-04-29 04:08:47,218 INFO L84 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 305 events. 120/305 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1049 event pairs, 0 based on Foata normal form. 105/394 useless extension candidates. Maximal degree in co-relation 346. Up to 30 conditions per place. [2021-04-29 04:08:47,219 INFO L132 encePairwiseOnDemand]: 324/339 looper letters, 2 selfloop transitions, 1 changer transitions 2/200 dead transitions. [2021-04-29 04:08:47,219 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 200 transitions, 587 flow [2021-04-29 04:08:47,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 04:08:47,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 04:08:47,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-04-29 04:08:47,222 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-04-29 04:08:47,222 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-04-29 04:08:47,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-04-29 04:08:47,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:08:47,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-04-29 04:08:47,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 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) [2021-04-29 04:08:47,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:08:47,228 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:08:47,228 INFO L185 Difference]: Start difference. First operand has 96 places, 214 transitions, 623 flow. Second operand 3 states and 983 transitions. [2021-04-29 04:08:47,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 200 transitions, 587 flow [2021-04-29 04:08:47,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 200 transitions, 586 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 04:08:47,233 INFO L241 Difference]: Finished difference. Result has 97 places, 198 transitions, 578 flow [2021-04-29 04:08:47,234 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=578, PETRI_PLACES=97, PETRI_TRANSITIONS=198} [2021-04-29 04:08:47,234 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -17 predicate places. [2021-04-29 04:08:47,234 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:08:47,234 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 198 transitions, 578 flow [2021-04-29 04:08:47,235 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 198 transitions, 578 flow [2021-04-29 04:08:47,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 95 places, 198 transitions, 578 flow [2021-04-29 04:08:47,260 INFO L129 PetriNetUnfolder]: 120/303 cut-off events. [2021-04-29 04:08:47,260 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 04:08:47,261 INFO L84 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 303 events. 120/303 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 983 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 328. Up to 30 conditions per place. [2021-04-29 04:08:47,265 INFO L146 LiptonReduction]: Number of co-enabled transitions 4852 [2021-04-29 04:08:47,288 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:08:47,288 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:08:47,288 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 54 [2021-04-29 04:08:47,290 INFO L480 AbstractCegarLoop]: Abstraction has has 95 places, 198 transitions, 578 flow [2021-04-29 04:08:47,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:47,291 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:08:47,291 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:08:47,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-04-29 04:08:47,291 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-04-29 04:08:47,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:08:47,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1228118675, now seen corresponding path program 1 times [2021-04-29 04:08:47,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:08:47,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466338352] [2021-04-29 04:08:47,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:08:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:08:47,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:47,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:47,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:47,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 04:08:47,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:47,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:47,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:08:47,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466338352] [2021-04-29 04:08:47,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:08:47,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 04:08:47,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25958654] [2021-04-29 04:08:47,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 04:08:47,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:08:47,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 04:08:47,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 04:08:47,314 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 339 [2021-04-29 04:08:47,315 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 198 transitions, 578 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:47,315 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:08:47,315 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 339 [2021-04-29 04:08:47,316 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:08:47,341 INFO L129 PetriNetUnfolder]: 0/63 cut-off events. [2021-04-29 04:08:47,342 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-04-29 04:08:47,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 63 events. 0/63 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 87 event pairs, 0 based on Foata normal form. 15/64 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 04:08:47,342 INFO L132 encePairwiseOnDemand]: 323/339 looper letters, 1 selfloop transitions, 1 changer transitions 14/63 dead transitions. [2021-04-29 04:08:47,342 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 63 transitions, 177 flow [2021-04-29 04:08:47,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 04:08:47,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 04:08:47,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2021-04-29 04:08:47,346 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9665683382497542 [2021-04-29 04:08:47,346 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2021-04-29 04:08:47,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2021-04-29 04:08:47,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:08:47,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2021-04-29 04:08:47,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 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) [2021-04-29 04:08:47,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:08:47,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2021-04-29 04:08:47,351 INFO L185 Difference]: Start difference. First operand has 95 places, 198 transitions, 578 flow. Second operand 3 states and 983 transitions. [2021-04-29 04:08:47,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 63 transitions, 177 flow [2021-04-29 04:08:47,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 63 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 04:08:47,353 INFO L241 Difference]: Finished difference. Result has 96 places, 49 transitions, 146 flow [2021-04-29 04:08:47,353 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=96, PETRI_TRANSITIONS=49} [2021-04-29 04:08:47,354 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, -18 predicate places. [2021-04-29 04:08:47,354 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:08:47,354 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 49 transitions, 146 flow [2021-04-29 04:08:47,354 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 49 transitions, 146 flow [2021-04-29 04:08:47,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 49 transitions, 146 flow [2021-04-29 04:08:47,360 INFO L129 PetriNetUnfolder]: 0/49 cut-off events. [2021-04-29 04:08:47,360 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 04:08:47,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 49 events. 0/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-04-29 04:08:47,361 INFO L146 LiptonReduction]: Number of co-enabled transitions 720 [2021-04-29 04:08:47,363 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:08:47,363 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:08:47,364 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-04-29 04:08:47,366 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 49 transitions, 146 flow [2021-04-29 04:08:47,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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) [2021-04-29 04:08:47,366 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:08:47,366 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:08:47,367 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-04-29 04:08:47,367 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-04-29 04:08:47,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:08:47,367 INFO L82 PathProgramCache]: Analyzing trace with hash 373167511, now seen corresponding path program 1 times [2021-04-29 04:08:47,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:08:47,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391534747] [2021-04-29 04:08:47,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:08:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:08:47,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:47,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:08:47,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:08:47,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:08:47,625 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-29 04:08:47,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-29 04:08:47,649 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-04-29 04:08:47,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-29 04:08:47,686 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-04-29 04:08:47,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-29 04:08:47,729 INFO L142 QuantifierPusher]: treesize reduction 18, result has 72.3 percent of original size [2021-04-29 04:08:47,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-04-29 04:08:47,787 INFO L142 QuantifierPusher]: treesize reduction 18, result has 74.6 percent of original size [2021-04-29 04:08:47,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-29 04:08:47,862 INFO L142 QuantifierPusher]: treesize reduction 27, result has 69.3 percent of original size [2021-04-29 04:08:47,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-04-29 04:08:47,950 INFO L142 QuantifierPusher]: treesize reduction 36, result has 65.7 percent of original size [2021-04-29 04:08:47,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-04-29 04:08:48,062 INFO L142 QuantifierPusher]: treesize reduction 45, result has 63.1 percent of original size [2021-04-29 04:08:48,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-04-29 04:08:48,190 INFO L142 QuantifierPusher]: treesize reduction 63, result has 56.3 percent of original size [2021-04-29 04:08:48,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-04-29 04:08:48,329 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2021-04-29 04:08:48,339 INFO L142 QuantifierPusher]: treesize reduction 72, result has 55.3 percent of original size [2021-04-29 04:08:48,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-04-29 04:08:48,515 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-04-29 04:08:48,525 INFO L142 QuantifierPusher]: treesize reduction 90, result has 52.4 percent of original size [2021-04-29 04:08:48,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-04-29 04:08:48,709 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2021-04-29 04:08:48,721 INFO L142 QuantifierPusher]: treesize reduction 99, result has 51.9 percent of original size [2021-04-29 04:08:48,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-04-29 04:08:48,927 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 04:08:48,941 INFO L142 QuantifierPusher]: treesize reduction 117, result has 48.7 percent of original size [2021-04-29 04:08:48,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-04-29 04:08:49,096 INFO L142 QuantifierPusher]: treesize reduction 126, result has 48.6 percent of original size [2021-04-29 04:08:49,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-04-29 04:08:49,273 INFO L142 QuantifierPusher]: treesize reduction 135, result has 47.3 percent of original size [2021-04-29 04:08:49,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-04-29 04:08:49,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:08:49,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391534747] [2021-04-29 04:08:49,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:08:49,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-04-29 04:08:49,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861261214] [2021-04-29 04:08:49,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-29 04:08:49,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:08:49,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-29 04:08:49,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-04-29 04:08:49,423 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 339 [2021-04-29 04:08:49,427 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 49 transitions, 146 flow. Second operand has 18 states, 18 states have (on average 305.94444444444446) internal successors, (5507), 18 states have internal predecessors, (5507), 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) [2021-04-29 04:08:49,427 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:08:49,427 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 339 [2021-04-29 04:08:49,427 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:10:47,457 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-04-29 04:10:47,859 INFO L129 PetriNetUnfolder]: 638979/742247 cut-off events. [2021-04-29 04:10:47,860 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 04:10:52,828 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1479577 conditions, 742247 events. 638979/742247 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 35488. Compared 3779176 event pairs, 212993 based on Foata normal form. 1/737998 useless extension candidates. Maximal degree in co-relation 1479569. Up to 262145 conditions per place. [2021-04-29 04:10:55,274 INFO L132 encePairwiseOnDemand]: 322/339 looper letters, 135 selfloop transitions, 15 changer transitions 1/183 dead transitions. [2021-04-29 04:10:55,274 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 183 transitions, 716 flow [2021-04-29 04:10:55,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-29 04:10:55,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-04-29 04:10:55,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5642 transitions. [2021-04-29 04:10:55,284 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246148803670927 [2021-04-29 04:10:55,284 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5642 transitions. [2021-04-29 04:10:55,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5642 transitions. [2021-04-29 04:10:55,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:10:55,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5642 transitions. [2021-04-29 04:10:55,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 313.44444444444446) internal successors, (5642), 18 states have internal predecessors, (5642), 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) [2021-04-29 04:10:55,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 339.0) internal successors, (6441), 19 states have internal predecessors, (6441), 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) [2021-04-29 04:10:55,307 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 339.0) internal successors, (6441), 19 states have internal predecessors, (6441), 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) [2021-04-29 04:10:55,308 INFO L185 Difference]: Start difference. First operand has 82 places, 49 transitions, 146 flow. Second operand 18 states and 5642 transitions. [2021-04-29 04:10:55,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 183 transitions, 716 flow [2021-04-29 04:10:55,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 183 transitions, 715 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 04:10:55,320 INFO L241 Difference]: Finished difference. Result has 114 places, 63 transitions, 264 flow [2021-04-29 04:10:55,320 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=264, PETRI_PLACES=114, PETRI_TRANSITIONS=63} [2021-04-29 04:10:55,320 INFO L343 CegarLoopForPetriNet]: 114 programPoint places, 0 predicate places. [2021-04-29 04:10:55,321 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:10:55,321 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 63 transitions, 264 flow [2021-04-29 04:10:55,321 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 63 transitions, 264 flow [2021-04-29 04:10:55,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 113 places, 63 transitions, 264 flow [2021-04-29 04:10:55,350 INFO L129 PetriNetUnfolder]: 0/239 cut-off events. [2021-04-29 04:10:55,350 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-04-29 04:10:55,351 INFO L84 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 239 events. 0/239 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1291 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 0. Up to 16 conditions per place. [2021-04-29 04:10:55,353 INFO L146 LiptonReduction]: Number of co-enabled transitions 1138 [2021-04-29 04:10:55,356 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:10:55,357 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:10:55,357 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36 [2021-04-29 04:10:55,359 INFO L480 AbstractCegarLoop]: Abstraction has has 113 places, 63 transitions, 264 flow [2021-04-29 04:10:55,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 305.94444444444446) internal successors, (5507), 18 states have internal predecessors, (5507), 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) [2021-04-29 04:10:55,361 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:10:55,361 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:10:55,361 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-04-29 04:10:55,361 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-04-29 04:10:55,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:10:55,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1130039239, now seen corresponding path program 2 times [2021-04-29 04:10:55,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:10:55,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681466392] [2021-04-29 04:10:55,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:10:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:10:55,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:10:55,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:10:55,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:10:55,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:10:55,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:10:55,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 04:10:55,512 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-29 04:10:55,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-29 04:10:55,529 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-04-29 04:10:55,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-29 04:10:55,553 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-04-29 04:10:55,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-29 04:10:55,584 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-04-29 04:10:55,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-29 04:10:55,629 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-04-29 04:10:55,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-29 04:10:55,684 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-04-29 04:10:55,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-04-29 04:10:55,749 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-04-29 04:10:55,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-04-29 04:10:55,828 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-04-29 04:10:55,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-04-29 04:10:55,916 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-04-29 04:10:55,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-04-29 04:10:56,021 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-04-29 04:10:56,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-04-29 04:10:56,136 INFO L142 QuantifierPusher]: treesize reduction 99, result has 50.5 percent of original size [2021-04-29 04:10:56,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-04-29 04:10:56,279 INFO L142 QuantifierPusher]: treesize reduction 108, result has 50.2 percent of original size [2021-04-29 04:10:56,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-04-29 04:10:56,429 INFO L142 QuantifierPusher]: treesize reduction 117, result has 50.0 percent of original size [2021-04-29 04:10:56,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-04-29 04:10:56,601 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-04-29 04:10:56,618 INFO L142 QuantifierPusher]: treesize reduction 135, result has 47.3 percent of original size [2021-04-29 04:10:56,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-04-29 04:10:56,765 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-04-29 04:10:56,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:10:56,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681466392] [2021-04-29 04:10:56,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:10:56,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-04-29 04:10:56,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544513341] [2021-04-29 04:10:56,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-29 04:10:56,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:10:56,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-29 04:10:56,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-04-29 04:10:56,775 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 339 [2021-04-29 04:10:56,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 63 transitions, 264 flow. Second operand has 18 states, 18 states have (on average 305.94444444444446) internal successors, (5507), 18 states have internal predecessors, (5507), 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) [2021-04-29 04:10:56,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:10:56,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 339 [2021-04-29 04:10:56,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown