/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_15.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 07:59:03,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 07:59:03,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 07:59:03,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 07:59:03,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 07:59:03,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 07:59:03,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 07:59:03,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 07:59:03,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 07:59:03,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 07:59:03,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 07:59:03,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 07:59:03,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 07:59:03,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 07:59:03,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 07:59:03,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 07:59:03,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 07:59:03,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 07:59:03,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 07:59:03,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 07:59:03,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 07:59:03,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 07:59:03,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 07:59:03,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 07:59:03,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 07:59:03,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 07:59:03,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 07:59:03,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 07:59:03,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 07:59:03,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 07:59:03,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 07:59:03,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 07:59:03,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 07:59:03,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 07:59:03,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 07:59:03,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 07:59:03,469 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-RepeatedVariableLbe.epf [2021-03-25 07:59:03,497 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 07:59:03,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 07:59:03,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 07:59:03,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 07:59:03,500 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 07:59:03,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 07:59:03,500 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 07:59:03,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 07:59:03,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 07:59:03,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 07:59:03,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 07:59:03,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 07:59:03,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 07:59:03,502 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 07:59:03,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 07:59:03,502 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 07:59:03,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 07:59:03,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 07:59:03,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 07:59:03,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 07:59:03,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 07:59:03,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 07:59:03,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 07:59:03,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 07:59:03,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 07:59:03,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 07:59:03,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 07:59:03,503 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 07:59:03,503 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 07:59:03,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 07:59:03,503 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 07:59:03,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 07:59:03,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 07:59:03,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 07:59:03,709 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 07:59:03,710 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 07:59:03,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_15.bpl [2021-03-25 07:59:03,711 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_15.bpl' [2021-03-25 07:59:03,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 07:59:03,736 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 07:59:03,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 07:59:03,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 07:59:03,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 07:59:03,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:59:03" (1/1) ... [2021-03-25 07:59:03,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:59:03" (1/1) ... [2021-03-25 07:59:03,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 07:59:03,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 07:59:03,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 07:59:03,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 07:59:03,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:59:03" (1/1) ... [2021-03-25 07:59:03,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:59:03" (1/1) ... [2021-03-25 07:59:03,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:59:03" (1/1) ... [2021-03-25 07:59:03,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:59:03" (1/1) ... [2021-03-25 07:59:03,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:59:03" (1/1) ... [2021-03-25 07:59:03,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:59:03" (1/1) ... [2021-03-25 07:59:03,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:59:03" (1/1) ... [2021-03-25 07:59:03,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 07:59:03,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 07:59:03,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 07:59:03,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 07:59:03,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:59:03" (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 [2021-03-25 07:59:03,812 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_14 given in one single declaration [2021-03-25 07:59:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure set_14 [2021-03-25 07:59:03,813 INFO L138 BoogieDeclarations]: Found implementation of procedure set_14 [2021-03-25 07:59:03,813 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-25 07:59:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-25 07:59:03,813 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-25 07:59:03,813 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-25 07:59:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-25 07:59:03,813 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-25 07:59:03,813 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-25 07:59:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-25 07:59:03,813 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-25 07:59:03,813 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-25 07:59:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-25 07:59:03,814 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-25 07:59:03,814 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-25 07:59:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-25 07:59:03,814 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-25 07:59:03,814 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-03-25 07:59:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-03-25 07:59:03,814 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-03-25 07:59:03,814 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 07:59:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 07:59:03,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 07:59:03,814 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2021-03-25 07:59:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2021-03-25 07:59:03,814 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2021-03-25 07:59:03,815 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-25 07:59:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-25 07:59:03,815 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-25 07:59:03,815 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_13 given in one single declaration [2021-03-25 07:59:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure set_13 [2021-03-25 07:59:03,815 INFO L138 BoogieDeclarations]: Found implementation of procedure set_13 [2021-03-25 07:59:03,815 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-03-25 07:59:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-03-25 07:59:03,815 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-03-25 07:59:03,815 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-03-25 07:59:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-03-25 07:59:03,815 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-03-25 07:59:03,816 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-03-25 07:59:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-03-25 07:59:03,816 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-03-25 07:59:03,816 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2021-03-25 07:59:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2021-03-25 07:59:03,816 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2021-03-25 07:59:03,816 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-03-25 07:59:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-03-25 07:59:03,816 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-03-25 07:59:03,817 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 07:59:03,962 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 07:59:03,962 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 07:59:03,963 INFO L202 PluginConnector]: Adding new model example_15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:59:03 BoogieIcfgContainer [2021-03-25 07:59:03,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 07:59:03,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 07:59:03,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 07:59:03,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 07:59:03,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:59:03" (1/2) ... [2021-03-25 07:59:03,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c4e7f3 and model type example_15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:59:03, skipping insertion in model container [2021-03-25 07:59:03,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:59:03" (2/2) ... [2021-03-25 07:59:03,967 INFO L111 eAbstractionObserver]: Analyzing ICFG example_15.bpl [2021-03-25 07:59:03,971 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 07:59:03,973 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 07:59:03,973 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 07:59:04,277 INFO L149 ThreadInstanceAdder]: Constructed 225 joinOtherThreadTransitions. [2021-03-25 07:59:04,289 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-03-25 07:59:04,314 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 07:59:04,315 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 07:59:04,315 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 07:59:04,315 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 07:59:04,315 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 07:59:04,315 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 07:59:04,315 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 07:59:04,315 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 07:59:04,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 124 places, 288 transitions, 1326 flow [2021-03-25 07:59:18,967 INFO L129 PetriNetUnfolder]: 212993/245808 cut-off events. [2021-03-25 07:59:18,968 INFO L130 PetriNetUnfolder]: For 245760/245760 co-relation queries the response was YES. [2021-03-25 07:59:20,578 INFO L84 FinitePrefix]: Finished finitePrefix Result has 491614 conditions, 245808 events. 212993/245808 cut-off events. For 245760/245760 co-relation queries the response was YES. Maximal size of possible extension queue 7060. Compared 1008684 event pairs, 0 based on Foata normal form. 0/245807 useless extension candidates. Maximal degree in co-relation 229448. Up to 51480 conditions per place. [2021-03-25 07:59:20,578 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 288 transitions, 1326 flow [2021-03-25 07:59:21,971 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 271 transitions, 1262 flow [2021-03-25 07:59:21,972 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:59:21,978 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 271 transitions, 1262 flow [2021-03-25 07:59:21,980 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 271 transitions, 1262 flow [2021-03-25 07:59:21,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 107 places, 271 transitions, 1262 flow [2021-03-25 07:59:36,578 INFO L129 PetriNetUnfolder]: 212993/245806 cut-off events. [2021-03-25 07:59:36,578 INFO L130 PetriNetUnfolder]: For 245760/245760 co-relation queries the response was YES. [2021-03-25 07:59:38,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 491612 conditions, 245806 events. 212993/245806 cut-off events. For 245760/245760 co-relation queries the response was YES. Maximal size of possible extension queue 7060. Compared 1023057 event pairs, 0 based on Foata normal form. 0/245806 useless extension candidates. Maximal degree in co-relation 229448. Up to 51480 conditions per place. [2021-03-25 07:59:43,149 INFO L142 LiptonReduction]: Number of co-enabled transitions 13020 [2021-03-25 07:59:43,802 INFO L154 LiptonReduction]: Checked pairs total: 3465 [2021-03-25 07:59:43,802 INFO L156 LiptonReduction]: Total number of compositions: 15 [2021-03-25 07:59:43,804 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 21832 [2021-03-25 07:59:56,344 INFO L129 PetriNetUnfolder]: 212993/245790 cut-off events. [2021-03-25 07:59:56,345 INFO L130 PetriNetUnfolder]: For 245760/245760 co-relation queries the response was YES. [2021-03-25 07:59:56,345 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:59:56,345 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] [2021-03-25 07:59:56,346 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.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-25 07:59:56,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:59:56,349 INFO L82 PathProgramCache]: Analyzing trace with hash 873046711, now seen corresponding path program 1 times [2021-03-25 07:59:56,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:59:56,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263501538] [2021-03-25 07:59:56,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:59:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:59:56,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:59:56,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:59:56,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:59:56,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:59:56,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:59:56,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:59:56,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:59:56,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263501538] [2021-03-25 07:59:56,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:59:56,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 07:59:56,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67771985] [2021-03-25 07:59:56,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 07:59:56,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:59:56,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 07:59:56,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 07:59:56,495 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-25 07:59:56,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 256 transitions, 1232 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:59:56,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:59:56,499 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-25 07:59:56,500 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:00:03,299 INFO L129 PetriNetUnfolder]: 98501/115021 cut-off events. [2021-03-25 08:00:03,299 INFO L130 PetriNetUnfolder]: For 164037/164037 co-relation queries the response was YES. [2021-03-25 08:00:03,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230165 conditions, 115021 events. 98501/115021 cut-off events. For 164037/164037 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 580108 event pairs, 0 based on Foata normal form. 16278/131299 useless extension candidates. Maximal degree in co-relation 229397. Up to 24024 conditions per place. [2021-03-25 08:00:04,648 INFO L132 encePairwiseOnDemand]: 290/303 looper letters, 3 selfloop transitions, 1 changer transitions 0/244 dead transitions. [2021-03-25 08:00:04,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 244 transitions, 1180 flow [2021-03-25 08:00:04,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 08:00:04,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 08:00:04,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-03-25 08:00:04,658 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-03-25 08:00:04,659 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-03-25 08:00:04,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-03-25 08:00:04,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:00:04,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-03-25 08:00:04,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:04,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:04,673 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:04,674 INFO L185 Difference]: Start difference. First operand has 92 places, 256 transitions, 1232 flow. Second operand 3 states and 877 transitions. [2021-03-25 08:00:04,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 244 transitions, 1180 flow [2021-03-25 08:00:05,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 244 transitions, 724 flow, removed 0 selfloop flow, removed 30 redundant places. [2021-03-25 08:00:05,615 INFO L241 Difference]: Finished difference. Result has 64 places, 244 transitions, 718 flow [2021-03-25 08:00:05,617 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=718, PETRI_PLACES=64, PETRI_TRANSITIONS=244} [2021-03-25 08:00:05,617 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -28 predicate places. [2021-03-25 08:00:05,617 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:00:05,617 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 244 transitions, 718 flow [2021-03-25 08:00:05,618 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 244 transitions, 718 flow [2021-03-25 08:00:05,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 244 transitions, 718 flow [2021-03-25 08:00:09,236 INFO L129 PetriNetUnfolder]: 98501/115021 cut-off events. [2021-03-25 08:00:09,236 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 08:00:09,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115039 conditions, 115021 events. 98501/115021 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 472158 event pairs, 0 based on Foata normal form. 0/115021 useless extension candidates. Maximal degree in co-relation 115010. Up to 24024 conditions per place. [2021-03-25 08:00:10,220 INFO L142 LiptonReduction]: Number of co-enabled transitions 5964 [2021-03-25 08:00:10,238 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:00:10,238 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:00:10,238 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4621 [2021-03-25 08:00:10,239 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 244 transitions, 718 flow [2021-03-25 08:00:10,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:10,239 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:00:10,239 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] [2021-03-25 08:00:10,240 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 08:00:10,240 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.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-25 08:00:10,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:00:10,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1941928801, now seen corresponding path program 1 times [2021-03-25 08:00:10,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:00:10,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905597561] [2021-03-25 08:00:10,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:00:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:00:10,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:10,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:00:10,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:10,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 08:00:10,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:10,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:00:10,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:00:10,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905597561] [2021-03-25 08:00:10,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:00:10,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 08:00:10,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094880988] [2021-03-25 08:00:10,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 08:00:10,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:00:10,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 08:00:10,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 08:00:10,263 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-25 08:00:10,264 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 244 transitions, 718 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:10,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:00:10,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-25 08:00:10,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:00:13,010 INFO L129 PetriNetUnfolder]: 65871/78295 cut-off events. [2021-03-25 08:00:13,010 INFO L130 PetriNetUnfolder]: For 8206/8206 co-relation queries the response was YES. [2021-03-25 08:00:13,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82425 conditions, 78295 events. 65871/78295 cut-off events. For 8206/8206 co-relation queries the response was YES. Maximal size of possible extension queue 3067. Compared 385348 event pairs, 0 based on Foata normal form. 4096/82391 useless extension candidates. Maximal degree in co-relation 82394. Up to 18018 conditions per place. [2021-03-25 08:00:13,391 INFO L132 encePairwiseOnDemand]: 295/303 looper letters, 8 selfloop transitions, 1 changer transitions 0/237 dead transitions. [2021-03-25 08:00:13,391 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 237 transitions, 715 flow [2021-03-25 08:00:13,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 08:00:13,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 08:00:13,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-03-25 08:00:13,393 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-03-25 08:00:13,393 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-03-25 08:00:13,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-03-25 08:00:13,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:00:13,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-03-25 08:00:13,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:13,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:13,397 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:13,397 INFO L185 Difference]: Start difference. First operand has 64 places, 244 transitions, 718 flow. Second operand 3 states and 877 transitions. [2021-03-25 08:00:13,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 237 transitions, 715 flow [2021-03-25 08:00:13,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 237 transitions, 714 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 08:00:13,408 INFO L241 Difference]: Finished difference. Result has 65 places, 237 transitions, 698 flow [2021-03-25 08:00:13,409 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=698, PETRI_PLACES=65, PETRI_TRANSITIONS=237} [2021-03-25 08:00:13,409 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -27 predicate places. [2021-03-25 08:00:13,409 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:00:13,409 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 237 transitions, 698 flow [2021-03-25 08:00:13,410 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 237 transitions, 698 flow [2021-03-25 08:00:13,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 237 transitions, 698 flow [2021-03-25 08:00:15,867 INFO L129 PetriNetUnfolder]: 65871/78295 cut-off events. [2021-03-25 08:00:15,867 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 08:00:16,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78314 conditions, 78295 events. 65871/78295 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3068. Compared 332490 event pairs, 0 based on Foata normal form. 0/78295 useless extension candidates. Maximal degree in co-relation 78295. Up to 18018 conditions per place. [2021-03-25 08:00:16,569 INFO L142 LiptonReduction]: Number of co-enabled transitions 5768 [2021-03-25 08:00:16,584 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:00:16,584 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:00:16,584 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3175 [2021-03-25 08:00:16,585 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 237 transitions, 698 flow [2021-03-25 08:00:16,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:16,585 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:00:16,585 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] [2021-03-25 08:00:16,585 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 08:00:16,585 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.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-25 08:00:16,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:00:16,586 INFO L82 PathProgramCache]: Analyzing trace with hash 607927321, now seen corresponding path program 1 times [2021-03-25 08:00:16,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:00:16,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288202867] [2021-03-25 08:00:16,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:00:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:00:16,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:16,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:00:16,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:16,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 08:00:16,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:16,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:00:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:00:16,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288202867] [2021-03-25 08:00:16,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:00:16,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 08:00:16,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139351237] [2021-03-25 08:00:16,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 08:00:16,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:00:16,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 08:00:16,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 08:00:16,605 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-25 08:00:16,606 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 237 transitions, 698 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:16,606 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:00:16,606 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-25 08:00:16,606 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:00:17,755 INFO L129 PetriNetUnfolder]: 31308/38219 cut-off events. [2021-03-25 08:00:17,755 INFO L130 PetriNetUnfolder]: For 5696/5696 co-relation queries the response was YES. [2021-03-25 08:00:17,859 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39347 conditions, 38219 events. 31308/38219 cut-off events. For 5696/5696 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 186164 event pairs, 0 based on Foata normal form. 4589/42808 useless extension candidates. Maximal degree in co-relation 39327. Up to 6435 conditions per place. [2021-03-25 08:00:17,962 INFO L132 encePairwiseOnDemand]: 293/303 looper letters, 6 selfloop transitions, 1 changer transitions 0/228 dead transitions. [2021-03-25 08:00:17,962 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 228 transitions, 685 flow [2021-03-25 08:00:17,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 08:00:17,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 08:00:17,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-03-25 08:00:17,964 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-03-25 08:00:17,964 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-03-25 08:00:17,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-03-25 08:00:17,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:00:17,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-03-25 08:00:17,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:17,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:17,968 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:17,968 INFO L185 Difference]: Start difference. First operand has 65 places, 237 transitions, 698 flow. Second operand 3 states and 877 transitions. [2021-03-25 08:00:17,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 228 transitions, 685 flow [2021-03-25 08:00:17,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 228 transitions, 684 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 08:00:17,972 INFO L241 Difference]: Finished difference. Result has 66 places, 228 transitions, 672 flow [2021-03-25 08:00:17,973 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=64, 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=672, PETRI_PLACES=66, PETRI_TRANSITIONS=228} [2021-03-25 08:00:17,973 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -26 predicate places. [2021-03-25 08:00:17,973 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:00:17,973 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 228 transitions, 672 flow [2021-03-25 08:00:17,973 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 228 transitions, 672 flow [2021-03-25 08:00:17,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 228 transitions, 672 flow [2021-03-25 08:00:18,882 INFO L129 PetriNetUnfolder]: 31308/38219 cut-off events. [2021-03-25 08:00:18,883 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 08:00:18,981 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38239 conditions, 38219 events. 31308/38219 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1310. Compared 162997 event pairs, 0 based on Foata normal form. 0/38219 useless extension candidates. Maximal degree in co-relation 38220. Up to 6435 conditions per place. [2021-03-25 08:00:19,279 INFO L142 LiptonReduction]: Number of co-enabled transitions 5516 [2021-03-25 08:00:19,292 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:00:19,292 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:00:19,292 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1319 [2021-03-25 08:00:19,293 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 228 transitions, 672 flow [2021-03-25 08:00:19,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:19,293 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:00:19,293 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] [2021-03-25 08:00:19,294 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 08:00:19,294 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.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-25 08:00:19,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:00:19,294 INFO L82 PathProgramCache]: Analyzing trace with hash -926207163, now seen corresponding path program 1 times [2021-03-25 08:00:19,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:00:19,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849698843] [2021-03-25 08:00:19,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:00:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:00:19,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:19,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:00:19,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:19,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 08:00:19,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:19,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:00:19,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:00:19,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849698843] [2021-03-25 08:00:19,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:00:19,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 08:00:19,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158010735] [2021-03-25 08:00:19,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 08:00:19,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:00:19,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 08:00:19,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 08:00:19,321 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-25 08:00:19,321 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 228 transitions, 672 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:19,321 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:00:19,321 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-25 08:00:19,321 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:00:20,291 INFO L129 PetriNetUnfolder]: 24290/30177 cut-off events. [2021-03-25 08:00:20,292 INFO L130 PetriNetUnfolder]: For 2923/2923 co-relation queries the response was YES. [2021-03-25 08:00:20,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32098 conditions, 30177 events. 24290/30177 cut-off events. For 2923/2923 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 148492 event pairs, 0 based on Foata normal form. 1024/31201 useless extension candidates. Maximal degree in co-relation 32077. Up to 6435 conditions per place. [2021-03-25 08:00:20,398 INFO L132 encePairwiseOnDemand]: 296/303 looper letters, 9 selfloop transitions, 1 changer transitions 0/222 dead transitions. [2021-03-25 08:00:20,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 222 transitions, 674 flow [2021-03-25 08:00:20,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 08:00:20,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 08:00:20,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-03-25 08:00:20,400 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-03-25 08:00:20,401 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-03-25 08:00:20,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-03-25 08:00:20,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:00:20,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-03-25 08:00:20,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:20,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:20,404 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:20,404 INFO L185 Difference]: Start difference. First operand has 66 places, 228 transitions, 672 flow. Second operand 3 states and 877 transitions. [2021-03-25 08:00:20,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 222 transitions, 674 flow [2021-03-25 08:00:20,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 222 transitions, 673 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 08:00:20,408 INFO L241 Difference]: Finished difference. Result has 67 places, 222 transitions, 655 flow [2021-03-25 08:00:20,408 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=655, PETRI_PLACES=67, PETRI_TRANSITIONS=222} [2021-03-25 08:00:20,408 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -25 predicate places. [2021-03-25 08:00:20,408 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:00:20,408 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 222 transitions, 655 flow [2021-03-25 08:00:20,408 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 222 transitions, 655 flow [2021-03-25 08:00:20,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 222 transitions, 655 flow [2021-03-25 08:00:21,223 INFO L129 PetriNetUnfolder]: 24290/30177 cut-off events. [2021-03-25 08:00:21,223 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 08:00:21,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30198 conditions, 30177 events. 24290/30177 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1310. Compared 133239 event pairs, 0 based on Foata normal form. 0/30177 useless extension candidates. Maximal degree in co-relation 30181. Up to 6435 conditions per place. [2021-03-25 08:00:21,380 INFO L142 LiptonReduction]: Number of co-enabled transitions 5348 [2021-03-25 08:00:21,392 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:00:21,392 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:00:21,392 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 984 [2021-03-25 08:00:21,392 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 222 transitions, 655 flow [2021-03-25 08:00:21,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:21,393 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:00:21,393 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] [2021-03-25 08:00:21,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 08:00:21,393 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.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-25 08:00:21,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:00:21,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1646851433, now seen corresponding path program 1 times [2021-03-25 08:00:21,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:00:21,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027922869] [2021-03-25 08:00:21,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:00:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:00:21,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:21,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:00:21,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:21,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 08:00:21,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:21,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:00:21,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:00:21,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027922869] [2021-03-25 08:00:21,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:00:21,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 08:00:21,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864741703] [2021-03-25 08:00:21,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 08:00:21,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:00:21,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 08:00:21,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 08:00:21,411 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-25 08:00:21,412 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 222 transitions, 655 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:21,412 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:00:21,412 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-25 08:00:21,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:00:21,694 INFO L129 PetriNetUnfolder]: 8502/11001 cut-off events. [2021-03-25 08:00:21,694 INFO L130 PetriNetUnfolder]: For 2285/2285 co-relation queries the response was YES. [2021-03-25 08:00:21,713 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11130 conditions, 11001 events. 8502/11001 cut-off events. For 2285/2285 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 50723 event pairs, 0 based on Foata normal form. 2179/13180 useless extension candidates. Maximal degree in co-relation 11112. Up to 1980 conditions per place. [2021-03-25 08:00:21,738 INFO L132 encePairwiseOnDemand]: 291/303 looper letters, 4 selfloop transitions, 1 changer transitions 0/211 dead transitions. [2021-03-25 08:00:21,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 211 transitions, 632 flow [2021-03-25 08:00:21,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 08:00:21,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 08:00:21,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-03-25 08:00:21,740 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-03-25 08:00:21,740 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-03-25 08:00:21,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-03-25 08:00:21,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:00:21,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-03-25 08:00:21,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:21,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:21,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:21,744 INFO L185 Difference]: Start difference. First operand has 67 places, 222 transitions, 655 flow. Second operand 3 states and 877 transitions. [2021-03-25 08:00:21,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 211 transitions, 632 flow [2021-03-25 08:00:21,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 211 transitions, 631 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 08:00:21,747 INFO L241 Difference]: Finished difference. Result has 68 places, 211 transitions, 623 flow [2021-03-25 08:00:21,747 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=623, PETRI_PLACES=68, PETRI_TRANSITIONS=211} [2021-03-25 08:00:21,747 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -24 predicate places. [2021-03-25 08:00:21,747 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:00:21,747 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 211 transitions, 623 flow [2021-03-25 08:00:21,747 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 211 transitions, 623 flow [2021-03-25 08:00:21,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 211 transitions, 623 flow [2021-03-25 08:00:21,991 INFO L129 PetriNetUnfolder]: 8502/11001 cut-off events. [2021-03-25 08:00:21,992 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 08:00:22,010 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11023 conditions, 11001 events. 8502/11001 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 47146 event pairs, 0 based on Foata normal form. 0/11001 useless extension candidates. Maximal degree in co-relation 11006. Up to 1980 conditions per place. [2021-03-25 08:00:22,075 INFO L142 LiptonReduction]: Number of co-enabled transitions 5040 [2021-03-25 08:00:22,088 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:00:22,088 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:00:22,088 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 341 [2021-03-25 08:00:22,089 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 211 transitions, 623 flow [2021-03-25 08:00:22,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,089 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:00:22,090 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] [2021-03-25 08:00:22,090 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 08:00:22,090 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.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-25 08:00:22,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:00:22,090 INFO L82 PathProgramCache]: Analyzing trace with hash -945345547, now seen corresponding path program 1 times [2021-03-25 08:00:22,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:00:22,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243623683] [2021-03-25 08:00:22,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:00:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:00:22,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:22,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:00:22,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:22,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 08:00:22,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:22,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:00:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:00:22,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243623683] [2021-03-25 08:00:22,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:00:22,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 08:00:22,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541360951] [2021-03-25 08:00:22,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 08:00:22,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:00:22,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 08:00:22,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 08:00:22,123 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-25 08:00:22,124 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 211 transitions, 623 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,124 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:00:22,124 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-25 08:00:22,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:00:22,307 INFO L129 PetriNetUnfolder]: 4371/5948 cut-off events. [2021-03-25 08:00:22,308 INFO L130 PetriNetUnfolder]: For 912/912 co-relation queries the response was YES. [2021-03-25 08:00:22,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6298 conditions, 5948 events. 4371/5948 cut-off events. For 912/912 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 27457 event pairs, 0 based on Foata normal form. 586/6534 useless extension candidates. Maximal degree in co-relation 6280. Up to 880 conditions per place. [2021-03-25 08:00:22,325 INFO L132 encePairwiseOnDemand]: 294/303 looper letters, 7 selfloop transitions, 1 changer transitions 0/203 dead transitions. [2021-03-25 08:00:22,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 203 transitions, 615 flow [2021-03-25 08:00:22,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 08:00:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 08:00:22,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-03-25 08:00:22,326 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-03-25 08:00:22,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-03-25 08:00:22,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-03-25 08:00:22,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:00:22,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-03-25 08:00:22,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,330 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,330 INFO L185 Difference]: Start difference. First operand has 68 places, 211 transitions, 623 flow. Second operand 3 states and 877 transitions. [2021-03-25 08:00:22,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 203 transitions, 615 flow [2021-03-25 08:00:22,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 203 transitions, 614 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 08:00:22,332 INFO L241 Difference]: Finished difference. Result has 69 places, 203 transitions, 600 flow [2021-03-25 08:00:22,333 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=600, PETRI_PLACES=69, PETRI_TRANSITIONS=203} [2021-03-25 08:00:22,333 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -23 predicate places. [2021-03-25 08:00:22,333 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:00:22,333 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 203 transitions, 600 flow [2021-03-25 08:00:22,333 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 203 transitions, 600 flow [2021-03-25 08:00:22,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 203 transitions, 600 flow [2021-03-25 08:00:22,467 INFO L129 PetriNetUnfolder]: 4371/5948 cut-off events. [2021-03-25 08:00:22,467 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 08:00:22,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5971 conditions, 5948 events. 4371/5948 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 26030 event pairs, 0 based on Foata normal form. 0/5948 useless extension candidates. Maximal degree in co-relation 5954. Up to 880 conditions per place. [2021-03-25 08:00:22,503 INFO L142 LiptonReduction]: Number of co-enabled transitions 4816 [2021-03-25 08:00:22,513 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:00:22,513 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:00:22,513 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 180 [2021-03-25 08:00:22,514 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 203 transitions, 600 flow [2021-03-25 08:00:22,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,514 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:00:22,514 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] [2021-03-25 08:00:22,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 08:00:22,514 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.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-25 08:00:22,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:00:22,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1105824269, now seen corresponding path program 1 times [2021-03-25 08:00:22,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:00:22,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251751896] [2021-03-25 08:00:22,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:00:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:00:22,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:22,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:00:22,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:22,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 08:00:22,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:22,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:00:22,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:00:22,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251751896] [2021-03-25 08:00:22,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:00:22,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 08:00:22,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712253058] [2021-03-25 08:00:22,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 08:00:22,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:00:22,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 08:00:22,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 08:00:22,541 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-25 08:00:22,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 203 transitions, 600 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:00:22,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-25 08:00:22,542 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:00:22,603 INFO L129 PetriNetUnfolder]: 1174/1708 cut-off events. [2021-03-25 08:00:22,603 INFO L130 PetriNetUnfolder]: For 489/489 co-relation queries the response was YES. [2021-03-25 08:00:22,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1748 conditions, 1708 events. 1174/1708 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6899 event pairs, 0 based on Foata normal form. 474/2182 useless extension candidates. Maximal degree in co-relation 1730. Up to 280 conditions per place. [2021-03-25 08:00:22,609 INFO L132 encePairwiseOnDemand]: 289/303 looper letters, 2 selfloop transitions, 1 changer transitions 0/190 dead transitions. [2021-03-25 08:00:22,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 190 transitions, 567 flow [2021-03-25 08:00:22,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 08:00:22,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 08:00:22,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-03-25 08:00:22,611 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-03-25 08:00:22,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-03-25 08:00:22,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-03-25 08:00:22,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:00:22,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-03-25 08:00:22,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,614 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,614 INFO L185 Difference]: Start difference. First operand has 69 places, 203 transitions, 600 flow. Second operand 3 states and 877 transitions. [2021-03-25 08:00:22,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 190 transitions, 567 flow [2021-03-25 08:00:22,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 190 transitions, 566 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 08:00:22,616 INFO L241 Difference]: Finished difference. Result has 70 places, 190 transitions, 562 flow [2021-03-25 08:00:22,617 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=562, PETRI_PLACES=70, PETRI_TRANSITIONS=190} [2021-03-25 08:00:22,617 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -22 predicate places. [2021-03-25 08:00:22,617 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:00:22,617 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 190 transitions, 562 flow [2021-03-25 08:00:22,617 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 190 transitions, 562 flow [2021-03-25 08:00:22,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 190 transitions, 562 flow [2021-03-25 08:00:22,658 INFO L129 PetriNetUnfolder]: 1174/1708 cut-off events. [2021-03-25 08:00:22,658 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 08:00:22,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1732 conditions, 1708 events. 1174/1708 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6752 event pairs, 0 based on Foata normal form. 0/1708 useless extension candidates. Maximal degree in co-relation 1715. Up to 280 conditions per place. [2021-03-25 08:00:22,668 INFO L142 LiptonReduction]: Number of co-enabled transitions 3512 [2021-03-25 08:00:22,676 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:00:22,676 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:00:22,676 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 59 [2021-03-25 08:00:22,679 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 190 transitions, 562 flow [2021-03-25 08:00:22,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,679 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:00:22,679 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] [2021-03-25 08:00:22,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 08:00:22,679 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.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-25 08:00:22,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:00:22,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1433291429, now seen corresponding path program 1 times [2021-03-25 08:00:22,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:00:22,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644441232] [2021-03-25 08:00:22,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:00:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:00:22,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:22,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:00:22,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:22,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 08:00:22,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:22,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:00:22,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:00:22,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644441232] [2021-03-25 08:00:22,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:00:22,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 08:00:22,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576129174] [2021-03-25 08:00:22,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 08:00:22,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:00:22,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 08:00:22,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 08:00:22,696 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-25 08:00:22,696 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 190 transitions, 562 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,696 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:00:22,696 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-25 08:00:22,696 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:00:22,721 INFO L129 PetriNetUnfolder]: 355/555 cut-off events. [2021-03-25 08:00:22,722 INFO L130 PetriNetUnfolder]: For 169/169 co-relation queries the response was YES. [2021-03-25 08:00:22,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 555 events. 355/555 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2133 event pairs, 0 based on Foata normal form. 168/723 useless extension candidates. Maximal degree in co-relation 564. Up to 140 conditions per place. [2021-03-25 08:00:22,724 INFO L132 encePairwiseOnDemand]: 288/303 looper letters, 1 selfloop transitions, 1 changer transitions 0/126 dead transitions. [2021-03-25 08:00:22,724 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 126 transitions, 374 flow [2021-03-25 08:00:22,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 08:00:22,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 08:00:22,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-03-25 08:00:22,725 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-03-25 08:00:22,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-03-25 08:00:22,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-03-25 08:00:22,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:00:22,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-03-25 08:00:22,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,728 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,728 INFO L185 Difference]: Start difference. First operand has 70 places, 190 transitions, 562 flow. Second operand 3 states and 877 transitions. [2021-03-25 08:00:22,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 126 transitions, 374 flow [2021-03-25 08:00:22,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 126 transitions, 373 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 08:00:22,730 INFO L241 Difference]: Finished difference. Result has 71 places, 126 transitions, 371 flow [2021-03-25 08:00:22,730 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=371, PETRI_PLACES=71, PETRI_TRANSITIONS=126} [2021-03-25 08:00:22,730 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -21 predicate places. [2021-03-25 08:00:22,730 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:00:22,731 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 126 transitions, 371 flow [2021-03-25 08:00:22,731 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 126 transitions, 371 flow [2021-03-25 08:00:22,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 126 transitions, 371 flow [2021-03-25 08:00:22,745 INFO L129 PetriNetUnfolder]: 355/555 cut-off events. [2021-03-25 08:00:22,745 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 08:00:22,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 555 events. 355/555 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1896 event pairs, 0 based on Foata normal form. 0/555 useless extension candidates. Maximal degree in co-relation 563. Up to 140 conditions per place. [2021-03-25 08:00:22,748 INFO L142 LiptonReduction]: Number of co-enabled transitions 2240 [2021-03-25 08:00:22,752 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:00:22,752 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:00:22,752 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 22 [2021-03-25 08:00:22,752 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 126 transitions, 371 flow [2021-03-25 08:00:22,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,753 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:00:22,753 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] [2021-03-25 08:00:22,753 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 08:00:22,753 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.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-25 08:00:22,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:00:22,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1901519683, now seen corresponding path program 1 times [2021-03-25 08:00:22,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:00:22,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568136231] [2021-03-25 08:00:22,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:00:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:00:22,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:22,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:00:22,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:22,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 08:00:22,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:22,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:00:22,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:00:22,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568136231] [2021-03-25 08:00:22,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:00:22,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 08:00:22,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842494041] [2021-03-25 08:00:22,769 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 08:00:22,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:00:22,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 08:00:22,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 08:00:22,770 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-25 08:00:22,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 126 transitions, 371 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:00:22,771 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-25 08:00:22,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:00:22,785 INFO L129 PetriNetUnfolder]: 129/232 cut-off events. [2021-03-25 08:00:22,785 INFO L130 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2021-03-25 08:00:22,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 232 events. 129/232 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 612 event pairs, 0 based on Foata normal form. 67/299 useless extension candidates. Maximal degree in co-relation 242. Up to 60 conditions per place. [2021-03-25 08:00:22,786 INFO L132 encePairwiseOnDemand]: 292/303 looper letters, 1 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2021-03-25 08:00:22,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 76 transitions, 225 flow [2021-03-25 08:00:22,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 08:00:22,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 08:00:22,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 873 transitions. [2021-03-25 08:00:22,787 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9603960396039604 [2021-03-25 08:00:22,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 873 transitions. [2021-03-25 08:00:22,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 873 transitions. [2021-03-25 08:00:22,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:00:22,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 873 transitions. [2021-03-25 08:00:22,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,790 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,790 INFO L185 Difference]: Start difference. First operand has 71 places, 126 transitions, 371 flow. Second operand 3 states and 873 transitions. [2021-03-25 08:00:22,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 76 transitions, 225 flow [2021-03-25 08:00:22,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 76 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 08:00:22,791 INFO L241 Difference]: Finished difference. Result has 72 places, 76 transitions, 222 flow [2021-03-25 08:00:22,792 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=72, PETRI_TRANSITIONS=76} [2021-03-25 08:00:22,792 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -20 predicate places. [2021-03-25 08:00:22,792 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:00:22,792 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 76 transitions, 222 flow [2021-03-25 08:00:22,792 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 76 transitions, 222 flow [2021-03-25 08:00:22,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 76 transitions, 222 flow [2021-03-25 08:00:22,799 INFO L129 PetriNetUnfolder]: 129/232 cut-off events. [2021-03-25 08:00:22,799 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 08:00:22,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 232 events. 129/232 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 655 event pairs, 0 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 241. Up to 60 conditions per place. [2021-03-25 08:00:22,800 INFO L142 LiptonReduction]: Number of co-enabled transitions 1440 [2021-03-25 08:00:22,802 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:00:22,802 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:00:22,802 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-03-25 08:00:22,803 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 222 flow [2021-03-25 08:00:22,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,803 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:00:22,803 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] [2021-03-25 08:00:22,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 08:00:22,803 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.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-25 08:00:22,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:00:22,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1119967421, now seen corresponding path program 1 times [2021-03-25 08:00:22,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:00:22,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399996790] [2021-03-25 08:00:22,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:00:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:00:22,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:22,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:00:22,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:22,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 08:00:22,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:22,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:00:22,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:00:22,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399996790] [2021-03-25 08:00:22,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:00:22,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 08:00:22,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868854146] [2021-03-25 08:00:22,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 08:00:22,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:00:22,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 08:00:22,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 08:00:22,820 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-25 08:00:22,821 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 76 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,821 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:00:22,821 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-25 08:00:22,821 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:00:22,829 INFO L129 PetriNetUnfolder]: 54/131 cut-off events. [2021-03-25 08:00:22,829 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-25 08:00:22,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 131 events. 54/131 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 278 event pairs, 0 based on Foata normal form. 26/157 useless extension candidates. Maximal degree in co-relation 146. Up to 30 conditions per place. [2021-03-25 08:00:22,829 INFO L132 encePairwiseOnDemand]: 298/303 looper letters, 2 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2021-03-25 08:00:22,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 72 transitions, 216 flow [2021-03-25 08:00:22,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 08:00:22,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 08:00:22,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 868 transitions. [2021-03-25 08:00:22,831 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9548954895489549 [2021-03-25 08:00:22,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 868 transitions. [2021-03-25 08:00:22,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 868 transitions. [2021-03-25 08:00:22,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:00:22,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 868 transitions. [2021-03-25 08:00:22,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 289.3333333333333) internal successors, (868), 3 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,834 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,834 INFO L185 Difference]: Start difference. First operand has 72 places, 76 transitions, 222 flow. Second operand 3 states and 868 transitions. [2021-03-25 08:00:22,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 72 transitions, 216 flow [2021-03-25 08:00:22,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 72 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 08:00:22,835 INFO L241 Difference]: Finished difference. Result has 73 places, 72 transitions, 211 flow [2021-03-25 08:00:22,835 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=211, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2021-03-25 08:00:22,835 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -19 predicate places. [2021-03-25 08:00:22,835 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:00:22,835 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 72 transitions, 211 flow [2021-03-25 08:00:22,835 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 72 transitions, 211 flow [2021-03-25 08:00:22,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 72 transitions, 211 flow [2021-03-25 08:00:22,840 INFO L129 PetriNetUnfolder]: 54/131 cut-off events. [2021-03-25 08:00:22,840 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 08:00:22,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 131 events. 54/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 292 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 145. Up to 30 conditions per place. [2021-03-25 08:00:22,841 INFO L142 LiptonReduction]: Number of co-enabled transitions 1288 [2021-03-25 08:00:22,842 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:00:22,842 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:00:22,843 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-25 08:00:22,843 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 211 flow [2021-03-25 08:00:22,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:22,843 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:00:22,843 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] [2021-03-25 08:00:22,843 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 08:00:22,844 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.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-25 08:00:22,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:00:22,844 INFO L82 PathProgramCache]: Analyzing trace with hash -939585247, now seen corresponding path program 1 times [2021-03-25 08:00:22,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:00:22,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072399873] [2021-03-25 08:00:22,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:00:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:00:22,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:22,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:00:22,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:22,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:00:22,950 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:00:22,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:00:22,969 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-25 08:00:22,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 08:00:23,008 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-25 08:00:23,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-25 08:00:23,058 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-25 08:00:23,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-25 08:00:23,107 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-03-25 08:00:23,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-25 08:00:23,150 INFO L142 QuantifierPusher]: treesize reduction 45, result has 59.1 percent of original size [2021-03-25 08:00:23,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-25 08:00:23,206 INFO L142 QuantifierPusher]: treesize reduction 54, result has 57.5 percent of original size [2021-03-25 08:00:23,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-25 08:00:23,269 INFO L142 QuantifierPusher]: treesize reduction 63, result has 54.3 percent of original size [2021-03-25 08:00:23,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-03-25 08:00:23,335 INFO L142 QuantifierPusher]: treesize reduction 72, result has 53.5 percent of original size [2021-03-25 08:00:23,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-03-25 08:00:23,432 INFO L142 QuantifierPusher]: treesize reduction 81, result has 52.9 percent of original size [2021-03-25 08:00:23,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-03-25 08:00:23,530 INFO L142 QuantifierPusher]: treesize reduction 90, result has 52.4 percent of original size [2021-03-25 08:00:23,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-03-25 08:00:23,631 INFO L142 QuantifierPusher]: treesize reduction 108, result has 48.8 percent of original size [2021-03-25 08:00:23,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-03-25 08:00:23,704 INFO L142 QuantifierPusher]: treesize reduction 117, result has 48.7 percent of original size [2021-03-25 08:00:23,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-03-25 08:00:23,786 INFO L142 QuantifierPusher]: treesize reduction 126, result has 47.3 percent of original size [2021-03-25 08:00:23,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-25 08:00:23,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:00:23,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072399873] [2021-03-25 08:00:23,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:00:23,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 08:00:23,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106651131] [2021-03-25 08:00:23,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-25 08:00:23,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:00:23,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-25 08:00:23,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-03-25 08:00:23,857 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 303 [2021-03-25 08:00:23,859 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 211 flow. Second operand has 17 states, 17 states have (on average 271.94117647058823) internal successors, (4623), 17 states have internal predecessors, (4623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:23,859 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:00:23,859 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 303 [2021-03-25 08:00:23,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:00:52,776 INFO L129 PetriNetUnfolder]: 307504/366103 cut-off events. [2021-03-25 08:00:52,776 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 08:00:55,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 710210 conditions, 366103 events. 307504/366103 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19032. Compared 1975330 event pairs, 98305 based on Foata normal form. 1/360671 useless extension candidates. Maximal degree in co-relation 710196. Up to 122881 conditions per place. [2021-03-25 08:00:57,490 INFO L132 encePairwiseOnDemand]: 287/303 looper letters, 119 selfloop transitions, 15 changer transitions 0/190 dead transitions. [2021-03-25 08:00:57,490 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 190 transitions, 715 flow [2021-03-25 08:00:57,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-25 08:00:57,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-25 08:00:57,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4742 transitions. [2021-03-25 08:00:57,496 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9205979421471558 [2021-03-25 08:00:57,496 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4742 transitions. [2021-03-25 08:00:57,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4742 transitions. [2021-03-25 08:00:57,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:00:57,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4742 transitions. [2021-03-25 08:00:57,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 278.94117647058823) internal successors, (4742), 17 states have internal predecessors, (4742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:57,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 303.0) internal successors, (5454), 18 states have internal predecessors, (5454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:57,508 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 303.0) internal successors, (5454), 18 states have internal predecessors, (5454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:57,508 INFO L185 Difference]: Start difference. First operand has 73 places, 72 transitions, 211 flow. Second operand 17 states and 4742 transitions. [2021-03-25 08:00:57,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 190 transitions, 715 flow [2021-03-25 08:00:57,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 190 transitions, 714 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 08:00:57,515 INFO L241 Difference]: Finished difference. Result has 103 places, 86 transitions, 327 flow [2021-03-25 08:00:57,515 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=327, PETRI_PLACES=103, PETRI_TRANSITIONS=86} [2021-03-25 08:00:57,515 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, 11 predicate places. [2021-03-25 08:00:57,515 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:00:57,516 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 86 transitions, 327 flow [2021-03-25 08:00:57,516 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 86 transitions, 327 flow [2021-03-25 08:00:57,516 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 103 places, 86 transitions, 327 flow [2021-03-25 08:00:57,546 INFO L129 PetriNetUnfolder]: 349/747 cut-off events. [2021-03-25 08:00:57,546 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2021-03-25 08:00:57,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 747 events. 349/747 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3986 event pairs, 0 based on Foata normal form. 0/638 useless extension candidates. Maximal degree in co-relation 845. Up to 183 conditions per place. [2021-03-25 08:00:57,552 INFO L142 LiptonReduction]: Number of co-enabled transitions 2284 [2021-03-25 08:00:57,554 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:00:57,555 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:00:57,555 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 40 [2021-03-25 08:00:57,555 INFO L480 AbstractCegarLoop]: Abstraction has has 103 places, 86 transitions, 327 flow [2021-03-25 08:00:57,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 271.94117647058823) internal successors, (4623), 17 states have internal predecessors, (4623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:57,556 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:00:57,556 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] [2021-03-25 08:00:57,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 08:00:57,557 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.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-03-25 08:00:57,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:00:57,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1389179091, now seen corresponding path program 2 times [2021-03-25 08:00:57,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:00:57,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424127751] [2021-03-25 08:00:57,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:00:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:00:57,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:57,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:00:57,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:57,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:00:57,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:00:57,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:00:57,620 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:00:57,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:00:57,629 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-25 08:00:57,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 08:00:57,640 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-25 08:00:57,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-25 08:00:57,658 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-25 08:00:57,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-25 08:00:57,681 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-25 08:00:57,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-25 08:00:57,713 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-03-25 08:00:57,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-25 08:00:57,746 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-03-25 08:00:57,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-25 08:00:57,784 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-03-25 08:00:57,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-25 08:00:57,829 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-03-25 08:00:57,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-25 08:00:57,880 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-03-25 08:00:57,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-25 08:00:57,946 INFO L142 QuantifierPusher]: treesize reduction 99, result has 50.5 percent of original size [2021-03-25 08:00:57,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-03-25 08:00:58,011 INFO L142 QuantifierPusher]: treesize reduction 108, result has 50.2 percent of original size [2021-03-25 08:00:58,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-03-25 08:00:58,086 INFO L142 QuantifierPusher]: treesize reduction 126, result has 47.3 percent of original size [2021-03-25 08:00:58,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-25 08:00:58,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:00:58,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424127751] [2021-03-25 08:00:58,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:00:58,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 08:00:58,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374639518] [2021-03-25 08:00:58,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-25 08:00:58,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:00:58,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-25 08:00:58,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-03-25 08:00:58,155 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 303 [2021-03-25 08:00:58,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 86 transitions, 327 flow. Second operand has 17 states, 17 states have (on average 271.94117647058823) internal successors, (4623), 17 states have internal predecessors, (4623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:00:58,161 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:00:58,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 303 [2021-03-25 08:00:58,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand