/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-RepeatedSemanticLbe.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 17:54:42,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 17:54:42,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 17:54:42,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 17:54:42,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 17:54:42,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 17:54:42,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 17:54:42,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 17:54:42,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 17:54:42,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 17:54:42,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 17:54:42,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 17:54:42,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 17:54:42,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 17:54:42,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 17:54:42,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 17:54:42,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 17:54:42,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 17:54:42,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 17:54:42,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 17:54:42,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 17:54:42,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 17:54:42,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 17:54:42,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 17:54:42,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 17:54:42,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 17:54:42,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 17:54:42,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 17:54:42,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 17:54:42,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 17:54:42,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 17:54:42,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 17:54:42,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 17:54:42,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 17:54:42,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 17:54:42,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 17:54:42,998 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-RepeatedSemanticLbe.epf [2021-03-25 17:54:43,033 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 17:54:43,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 17:54:43,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 17:54:43,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 17:54:43,036 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 17:54:43,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 17:54:43,036 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 17:54:43,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 17:54:43,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 17:54:43,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 17:54:43,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 17:54:43,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 17:54:43,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 17:54:43,038 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 17:54:43,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 17:54:43,039 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 17:54:43,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 17:54:43,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 17:54:43,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 17:54:43,039 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 17:54:43,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 17:54:43,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 17:54:43,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 17:54:43,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 17:54:43,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 17:54:43,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 17:54:43,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 17:54:43,041 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 17:54:43,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 17:54:43,041 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 17:54:43,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 17:54:43,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 17:54:43,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 17:54:43,381 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 17:54:43,382 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 17:54:43,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_15.bpl [2021-03-25 17:54:43,383 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_15.bpl' [2021-03-25 17:54:43,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 17:54:43,427 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 17:54:43,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 17:54:43,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 17:54:43,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 17:54:43,439 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 05:54:43" (1/1) ... [2021-03-25 17:54:43,444 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 05:54:43" (1/1) ... [2021-03-25 17:54:43,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 17:54:43,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 17:54:43,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 17:54:43,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 17:54:43,459 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 05:54:43" (1/1) ... [2021-03-25 17:54:43,459 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 05:54:43" (1/1) ... [2021-03-25 17:54:43,461 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 05:54:43" (1/1) ... [2021-03-25 17:54:43,461 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 05:54:43" (1/1) ... [2021-03-25 17:54:43,464 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 05:54:43" (1/1) ... [2021-03-25 17:54:43,465 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 05:54:43" (1/1) ... [2021-03-25 17:54:43,466 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 05:54:43" (1/1) ... [2021-03-25 17:54:43,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 17:54:43,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 17:54:43,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 17:54:43,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 17:54:43,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:54:43" (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 17:54:43,517 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_14 given in one single declaration [2021-03-25 17:54:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure set_14 [2021-03-25 17:54:43,517 INFO L138 BoogieDeclarations]: Found implementation of procedure set_14 [2021-03-25 17:54:43,517 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-25 17:54:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-25 17:54:43,517 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-25 17:54:43,517 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-25 17:54:43,518 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-25 17:54:43,518 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-25 17:54:43,518 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-25 17:54:43,518 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-25 17:54:43,518 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-25 17:54:43,518 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-25 17:54:43,518 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-25 17:54:43,518 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-25 17:54:43,519 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-25 17:54:43,519 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-25 17:54:43,519 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-25 17:54:43,519 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-03-25 17:54:43,519 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-03-25 17:54:43,519 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-03-25 17:54:43,519 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 17:54:43,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 17:54:43,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 17:54:43,520 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2021-03-25 17:54:43,520 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2021-03-25 17:54:43,520 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2021-03-25 17:54:43,520 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-25 17:54:43,520 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-25 17:54:43,520 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-25 17:54:43,520 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_13 given in one single declaration [2021-03-25 17:54:43,520 INFO L130 BoogieDeclarations]: Found specification of procedure set_13 [2021-03-25 17:54:43,521 INFO L138 BoogieDeclarations]: Found implementation of procedure set_13 [2021-03-25 17:54:43,521 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-03-25 17:54:43,521 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-03-25 17:54:43,521 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-03-25 17:54:43,521 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-03-25 17:54:43,521 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-03-25 17:54:43,521 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-03-25 17:54:43,521 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-03-25 17:54:43,522 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-03-25 17:54:43,522 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-03-25 17:54:43,522 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2021-03-25 17:54:43,522 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2021-03-25 17:54:43,522 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2021-03-25 17:54:43,522 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-03-25 17:54:43,522 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-03-25 17:54:43,522 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-03-25 17:54:43,523 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 17:54:43,683 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 17:54:43,684 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 17:54:43,685 INFO L202 PluginConnector]: Adding new model example_15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:54:43 BoogieIcfgContainer [2021-03-25 17:54:43,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 17:54:43,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 17:54:43,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 17:54:43,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 17:54:43,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:54:43" (1/2) ... [2021-03-25 17:54:43,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62007a38 and model type example_15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:54:43, skipping insertion in model container [2021-03-25 17:54:43,690 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 05:54:43" (2/2) ... [2021-03-25 17:54:43,691 INFO L111 eAbstractionObserver]: Analyzing ICFG example_15.bpl [2021-03-25 17:54:43,695 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 17:54:43,698 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 17:54:43,698 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 17:54:43,954 INFO L149 ThreadInstanceAdder]: Constructed 225 joinOtherThreadTransitions. [2021-03-25 17:54:43,973 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-03-25 17:54:44,006 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 17:54:44,006 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 17:54:44,006 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 17:54:44,006 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 17:54:44,006 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 17:54:44,006 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 17:54:44,006 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 17:54:44,006 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 17:54:44,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 124 places, 288 transitions, 1326 flow [2021-03-25 17:55:01,785 INFO L129 PetriNetUnfolder]: 212993/245808 cut-off events. [2021-03-25 17:55:01,785 INFO L130 PetriNetUnfolder]: For 245760/245760 co-relation queries the response was YES. [2021-03-25 17:55:03,656 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 17:55:03,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 288 transitions, 1326 flow [2021-03-25 17:55:05,484 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 271 transitions, 1262 flow [2021-03-25 17:55:05,485 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:55:05,497 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 271 transitions, 1262 flow [2021-03-25 17:55:05,499 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 271 transitions, 1262 flow [2021-03-25 17:55:05,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 107 places, 271 transitions, 1262 flow [2021-03-25 17:55:22,504 INFO L129 PetriNetUnfolder]: 212993/245806 cut-off events. [2021-03-25 17:55:22,504 INFO L130 PetriNetUnfolder]: For 245760/245760 co-relation queries the response was YES. [2021-03-25 17:55:24,546 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 17:55:29,979 INFO L142 LiptonReduction]: Number of co-enabled transitions 13020 [2021-03-25 17:55:30,786 INFO L154 LiptonReduction]: Checked pairs total: 3465 [2021-03-25 17:55:30,787 INFO L156 LiptonReduction]: Total number of compositions: 15 [2021-03-25 17:55:30,790 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 25306 [2021-03-25 17:55:44,938 INFO L129 PetriNetUnfolder]: 212993/245790 cut-off events. [2021-03-25 17:55:44,939 INFO L130 PetriNetUnfolder]: For 245760/245760 co-relation queries the response was YES. [2021-03-25 17:55:44,939 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:55:44,940 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 17:55:44,940 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 17:55:44,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:55:44,944 INFO L82 PathProgramCache]: Analyzing trace with hash 873046711, now seen corresponding path program 1 times [2021-03-25 17:55:44,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:55:44,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694106434] [2021-03-25 17:55:44,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:55:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:55:45,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:55:45,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:55:45,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:55:45,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:55:45,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:55:45,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:55:45,077 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 17:55:45,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694106434] [2021-03-25 17:55:45,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:55:45,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:55:45,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196366585] [2021-03-25 17:55:45,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:55:45,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:55:45,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:55:45,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:55:45,099 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-25 17:55:45,103 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 17:55:45,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:55:45,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-25 17:55:45,104 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:55:52,829 INFO L129 PetriNetUnfolder]: 98501/115021 cut-off events. [2021-03-25 17:55:52,829 INFO L130 PetriNetUnfolder]: For 164037/164037 co-relation queries the response was YES. [2021-03-25 17:55:53,526 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 17:55:54,330 INFO L132 encePairwiseOnDemand]: 290/303 looper letters, 3 selfloop transitions, 1 changer transitions 0/244 dead transitions. [2021-03-25 17:55:54,330 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 244 transitions, 1180 flow [2021-03-25 17:55:54,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:55:54,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:55:54,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-03-25 17:55:54,343 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-03-25 17:55:54,344 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-03-25 17:55:54,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-03-25 17:55:54,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:55:54,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-03-25 17:55:54,353 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 17:55:54,359 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 17:55:54,360 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 17:55:54,362 INFO L185 Difference]: Start difference. First operand has 92 places, 256 transitions, 1232 flow. Second operand 3 states and 877 transitions. [2021-03-25 17:55:54,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 244 transitions, 1180 flow [2021-03-25 17:55:55,628 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 17:55:55,633 INFO L241 Difference]: Finished difference. Result has 64 places, 244 transitions, 718 flow [2021-03-25 17:55:55,635 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 17:55:55,635 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -28 predicate places. [2021-03-25 17:55:55,635 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:55:55,636 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 244 transitions, 718 flow [2021-03-25 17:55:55,636 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 244 transitions, 718 flow [2021-03-25 17:55:55,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 244 transitions, 718 flow [2021-03-25 17:55:59,733 INFO L129 PetriNetUnfolder]: 98501/115021 cut-off events. [2021-03-25 17:55:59,733 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:56:00,034 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 17:56:01,008 INFO L142 LiptonReduction]: Number of co-enabled transitions 5964 [2021-03-25 17:56:01,034 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:56:01,034 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:56:01,035 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5400 [2021-03-25 17:56:01,036 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 244 transitions, 718 flow [2021-03-25 17:56:01,036 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 17:56:01,036 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:56:01,037 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 17:56:01,037 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 17:56:01,037 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 17:56:01,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:56:01,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1941928801, now seen corresponding path program 1 times [2021-03-25 17:56:01,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:56:01,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875749845] [2021-03-25 17:56:01,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:56:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:56:01,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:01,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:56:01,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:01,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:56:01,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:01,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:56:01,067 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 17:56:01,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875749845] [2021-03-25 17:56:01,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:56:01,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:56:01,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771500807] [2021-03-25 17:56:01,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:56:01,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:56:01,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:56:01,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:56:01,071 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-25 17:56:01,072 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 17:56:01,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:56:01,072 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-25 17:56:01,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:56:04,409 INFO L129 PetriNetUnfolder]: 65871/78295 cut-off events. [2021-03-25 17:56:04,409 INFO L130 PetriNetUnfolder]: For 8206/8206 co-relation queries the response was YES. [2021-03-25 17:56:04,654 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 17:56:04,961 INFO L132 encePairwiseOnDemand]: 295/303 looper letters, 8 selfloop transitions, 1 changer transitions 0/237 dead transitions. [2021-03-25 17:56:04,961 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 237 transitions, 715 flow [2021-03-25 17:56:04,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:56:04,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:56:04,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-03-25 17:56:04,964 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-03-25 17:56:04,964 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-03-25 17:56:04,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-03-25 17:56:04,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:56:04,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-03-25 17:56:04,966 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 17:56:04,970 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 17:56:04,970 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 17:56:04,970 INFO L185 Difference]: Start difference. First operand has 64 places, 244 transitions, 718 flow. Second operand 3 states and 877 transitions. [2021-03-25 17:56:04,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 237 transitions, 715 flow [2021-03-25 17:56:04,983 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 17:56:04,990 INFO L241 Difference]: Finished difference. Result has 65 places, 237 transitions, 698 flow [2021-03-25 17:56:04,991 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 17:56:04,991 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -27 predicate places. [2021-03-25 17:56:04,992 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:56:04,992 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 237 transitions, 698 flow [2021-03-25 17:56:04,993 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 237 transitions, 698 flow [2021-03-25 17:56:04,994 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 237 transitions, 698 flow [2021-03-25 17:56:07,463 INFO L129 PetriNetUnfolder]: 65871/78295 cut-off events. [2021-03-25 17:56:07,463 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:56:07,727 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 17:56:08,622 INFO L142 LiptonReduction]: Number of co-enabled transitions 5768 [2021-03-25 17:56:08,647 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:56:08,647 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:56:08,647 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3655 [2021-03-25 17:56:08,648 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 237 transitions, 698 flow [2021-03-25 17:56:08,649 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 17:56:08,649 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:56:08,649 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 17:56:08,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 17:56:08,649 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 17:56:08,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:56:08,650 INFO L82 PathProgramCache]: Analyzing trace with hash 607927321, now seen corresponding path program 1 times [2021-03-25 17:56:08,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:56:08,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865006390] [2021-03-25 17:56:08,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:56:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:56:08,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:08,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:56:08,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:08,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:56:08,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:08,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:56:08,675 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 17:56:08,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865006390] [2021-03-25 17:56:08,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:56:08,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:56:08,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335188469] [2021-03-25 17:56:08,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:56:08,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:56:08,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:56:08,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:56:08,678 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-25 17:56:08,679 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 17:56:08,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:56:08,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-25 17:56:08,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:56:09,998 INFO L129 PetriNetUnfolder]: 31308/38219 cut-off events. [2021-03-25 17:56:09,998 INFO L130 PetriNetUnfolder]: For 5696/5696 co-relation queries the response was YES. [2021-03-25 17:56:10,123 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 17:56:10,226 INFO L132 encePairwiseOnDemand]: 293/303 looper letters, 6 selfloop transitions, 1 changer transitions 0/228 dead transitions. [2021-03-25 17:56:10,226 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 228 transitions, 685 flow [2021-03-25 17:56:10,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:56:10,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:56:10,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-03-25 17:56:10,228 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-03-25 17:56:10,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-03-25 17:56:10,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-03-25 17:56:10,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:56:10,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-03-25 17:56:10,231 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 17:56:10,233 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 17:56:10,233 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 17:56:10,233 INFO L185 Difference]: Start difference. First operand has 65 places, 237 transitions, 698 flow. Second operand 3 states and 877 transitions. [2021-03-25 17:56:10,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 228 transitions, 685 flow [2021-03-25 17:56:10,238 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 17:56:10,240 INFO L241 Difference]: Finished difference. Result has 66 places, 228 transitions, 672 flow [2021-03-25 17:56:10,240 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 17:56:10,240 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -26 predicate places. [2021-03-25 17:56:10,240 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:56:10,241 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 228 transitions, 672 flow [2021-03-25 17:56:10,241 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 228 transitions, 672 flow [2021-03-25 17:56:10,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 228 transitions, 672 flow [2021-03-25 17:56:11,172 INFO L129 PetriNetUnfolder]: 31308/38219 cut-off events. [2021-03-25 17:56:11,172 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:56:11,307 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 17:56:11,638 INFO L142 LiptonReduction]: Number of co-enabled transitions 5516 [2021-03-25 17:56:11,655 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:56:11,655 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:56:11,656 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1416 [2021-03-25 17:56:11,656 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 228 transitions, 672 flow [2021-03-25 17:56:11,657 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 17:56:11,657 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:56:11,657 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 17:56:11,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 17:56:11,658 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 17:56:11,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:56:11,658 INFO L82 PathProgramCache]: Analyzing trace with hash -926207163, now seen corresponding path program 1 times [2021-03-25 17:56:11,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:56:11,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952885449] [2021-03-25 17:56:11,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:56:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:56:11,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:11,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:56:11,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:11,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:56:11,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:11,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:56:11,687 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 17:56:11,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952885449] [2021-03-25 17:56:11,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:56:11,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:56:11,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442282643] [2021-03-25 17:56:11,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:56:11,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:56:11,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:56:11,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:56:11,690 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-25 17:56:11,691 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 17:56:11,691 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:56:11,691 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-25 17:56:11,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:56:12,564 INFO L129 PetriNetUnfolder]: 24290/30177 cut-off events. [2021-03-25 17:56:12,565 INFO L130 PetriNetUnfolder]: For 2923/2923 co-relation queries the response was YES. [2021-03-25 17:56:12,684 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 17:56:12,778 INFO L132 encePairwiseOnDemand]: 296/303 looper letters, 9 selfloop transitions, 1 changer transitions 0/222 dead transitions. [2021-03-25 17:56:12,778 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 222 transitions, 674 flow [2021-03-25 17:56:12,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:56:12,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:56:12,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-03-25 17:56:12,780 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-03-25 17:56:12,780 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-03-25 17:56:12,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-03-25 17:56:12,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:56:12,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-03-25 17:56:12,783 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 17:56:12,784 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 17:56:12,785 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 17:56:12,785 INFO L185 Difference]: Start difference. First operand has 66 places, 228 transitions, 672 flow. Second operand 3 states and 877 transitions. [2021-03-25 17:56:12,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 222 transitions, 674 flow [2021-03-25 17:56:12,788 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 17:56:12,790 INFO L241 Difference]: Finished difference. Result has 67 places, 222 transitions, 655 flow [2021-03-25 17:56:12,790 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 17:56:12,791 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -25 predicate places. [2021-03-25 17:56:12,791 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:56:12,791 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 222 transitions, 655 flow [2021-03-25 17:56:12,791 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 222 transitions, 655 flow [2021-03-25 17:56:12,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 222 transitions, 655 flow [2021-03-25 17:56:13,556 INFO L129 PetriNetUnfolder]: 24290/30177 cut-off events. [2021-03-25 17:56:13,556 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:56:13,655 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 17:56:13,917 INFO L142 LiptonReduction]: Number of co-enabled transitions 5348 [2021-03-25 17:56:13,929 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:56:13,929 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:56:13,929 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1138 [2021-03-25 17:56:13,930 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 222 transitions, 655 flow [2021-03-25 17:56:13,930 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 17:56:13,930 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:56:13,931 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 17:56:13,931 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 17:56:13,931 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 17:56:13,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:56:13,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1646851433, now seen corresponding path program 1 times [2021-03-25 17:56:13,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:56:13,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564203438] [2021-03-25 17:56:13,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:56:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:56:13,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:13,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:56:13,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:13,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:56:13,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:13,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:56:13,953 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 17:56:13,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564203438] [2021-03-25 17:56:13,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:56:13,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:56:13,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127808336] [2021-03-25 17:56:13,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:56:13,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:56:13,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:56:13,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:56:13,955 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-25 17:56:13,956 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 17:56:13,956 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:56:13,956 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-25 17:56:13,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:56:14,254 INFO L129 PetriNetUnfolder]: 8502/11001 cut-off events. [2021-03-25 17:56:14,254 INFO L130 PetriNetUnfolder]: For 2285/2285 co-relation queries the response was YES. [2021-03-25 17:56:14,277 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 17:56:14,306 INFO L132 encePairwiseOnDemand]: 291/303 looper letters, 4 selfloop transitions, 1 changer transitions 0/211 dead transitions. [2021-03-25 17:56:14,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 211 transitions, 632 flow [2021-03-25 17:56:14,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:56:14,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:56:14,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-03-25 17:56:14,308 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-03-25 17:56:14,308 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-03-25 17:56:14,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-03-25 17:56:14,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:56:14,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-03-25 17:56:14,310 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 17:56:14,312 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 17:56:14,313 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 17:56:14,313 INFO L185 Difference]: Start difference. First operand has 67 places, 222 transitions, 655 flow. Second operand 3 states and 877 transitions. [2021-03-25 17:56:14,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 211 transitions, 632 flow [2021-03-25 17:56:14,315 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 17:56:14,317 INFO L241 Difference]: Finished difference. Result has 68 places, 211 transitions, 623 flow [2021-03-25 17:56:14,317 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 17:56:14,317 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -24 predicate places. [2021-03-25 17:56:14,317 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:56:14,318 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 211 transitions, 623 flow [2021-03-25 17:56:14,318 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 211 transitions, 623 flow [2021-03-25 17:56:14,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 211 transitions, 623 flow [2021-03-25 17:56:14,573 INFO L129 PetriNetUnfolder]: 8502/11001 cut-off events. [2021-03-25 17:56:14,573 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:56:14,608 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 17:56:14,684 INFO L142 LiptonReduction]: Number of co-enabled transitions 5040 [2021-03-25 17:56:14,699 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:56:14,700 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:56:14,700 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 383 [2021-03-25 17:56:14,701 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 211 transitions, 623 flow [2021-03-25 17:56:14,701 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 17:56:14,701 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:56:14,701 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 17:56:14,701 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 17:56:14,702 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 17:56:14,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:56:14,702 INFO L82 PathProgramCache]: Analyzing trace with hash -945345547, now seen corresponding path program 1 times [2021-03-25 17:56:14,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:56:14,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613080147] [2021-03-25 17:56:14,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:56:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:56:14,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:14,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:56:14,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:14,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:56:14,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:14,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:56:14,732 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 17:56:14,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613080147] [2021-03-25 17:56:14,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:56:14,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:56:14,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419004176] [2021-03-25 17:56:14,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:56:14,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:56:14,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:56:14,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:56:14,734 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-25 17:56:14,735 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 17:56:14,735 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:56:14,735 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-25 17:56:14,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:56:14,930 INFO L129 PetriNetUnfolder]: 4371/5948 cut-off events. [2021-03-25 17:56:14,930 INFO L130 PetriNetUnfolder]: For 912/912 co-relation queries the response was YES. [2021-03-25 17:56:14,942 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 17:56:14,957 INFO L132 encePairwiseOnDemand]: 294/303 looper letters, 7 selfloop transitions, 1 changer transitions 0/203 dead transitions. [2021-03-25 17:56:14,957 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 203 transitions, 615 flow [2021-03-25 17:56:14,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:56:14,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:56:14,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-03-25 17:56:14,959 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-03-25 17:56:14,959 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-03-25 17:56:14,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-03-25 17:56:14,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:56:14,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-03-25 17:56:14,962 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 17:56:14,963 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 17:56:14,964 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 17:56:14,964 INFO L185 Difference]: Start difference. First operand has 68 places, 211 transitions, 623 flow. Second operand 3 states and 877 transitions. [2021-03-25 17:56:14,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 203 transitions, 615 flow [2021-03-25 17:56:14,967 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 17:56:14,969 INFO L241 Difference]: Finished difference. Result has 69 places, 203 transitions, 600 flow [2021-03-25 17:56:14,970 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 17:56:14,970 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -23 predicate places. [2021-03-25 17:56:14,970 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:56:14,970 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 203 transitions, 600 flow [2021-03-25 17:56:14,970 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 203 transitions, 600 flow [2021-03-25 17:56:14,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 203 transitions, 600 flow [2021-03-25 17:56:15,130 INFO L129 PetriNetUnfolder]: 4371/5948 cut-off events. [2021-03-25 17:56:15,130 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:56:15,138 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 17:56:15,168 INFO L142 LiptonReduction]: Number of co-enabled transitions 4816 [2021-03-25 17:56:15,179 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:56:15,179 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:56:15,179 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 209 [2021-03-25 17:56:15,180 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 203 transitions, 600 flow [2021-03-25 17:56:15,181 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 17:56:15,181 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:56:15,181 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 17:56:15,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 17:56:15,181 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 17:56:15,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:56:15,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1105824269, now seen corresponding path program 1 times [2021-03-25 17:56:15,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:56:15,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24049779] [2021-03-25 17:56:15,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:56:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:56:15,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:15,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:56:15,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:15,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:56:15,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:15,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:56:15,202 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 17:56:15,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24049779] [2021-03-25 17:56:15,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:56:15,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:56:15,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167268245] [2021-03-25 17:56:15,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:56:15,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:56:15,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:56:15,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:56:15,205 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-25 17:56:15,205 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 17:56:15,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:56:15,206 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-25 17:56:15,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:56:15,272 INFO L129 PetriNetUnfolder]: 1174/1708 cut-off events. [2021-03-25 17:56:15,272 INFO L130 PetriNetUnfolder]: For 489/489 co-relation queries the response was YES. [2021-03-25 17:56:15,276 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 17:56:15,281 INFO L132 encePairwiseOnDemand]: 289/303 looper letters, 2 selfloop transitions, 1 changer transitions 0/190 dead transitions. [2021-03-25 17:56:15,281 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 190 transitions, 567 flow [2021-03-25 17:56:15,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:56:15,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:56:15,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-03-25 17:56:15,283 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-03-25 17:56:15,283 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-03-25 17:56:15,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-03-25 17:56:15,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:56:15,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-03-25 17:56:15,285 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 17:56:15,287 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 17:56:15,287 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 17:56:15,287 INFO L185 Difference]: Start difference. First operand has 69 places, 203 transitions, 600 flow. Second operand 3 states and 877 transitions. [2021-03-25 17:56:15,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 190 transitions, 567 flow [2021-03-25 17:56:15,289 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 17:56:15,291 INFO L241 Difference]: Finished difference. Result has 70 places, 190 transitions, 562 flow [2021-03-25 17:56:15,291 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 17:56:15,292 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -22 predicate places. [2021-03-25 17:56:15,292 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:56:15,292 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 190 transitions, 562 flow [2021-03-25 17:56:15,292 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 190 transitions, 562 flow [2021-03-25 17:56:15,293 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 190 transitions, 562 flow [2021-03-25 17:56:15,339 INFO L129 PetriNetUnfolder]: 1174/1708 cut-off events. [2021-03-25 17:56:15,340 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:56:15,342 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 17:56:15,351 INFO L142 LiptonReduction]: Number of co-enabled transitions 3512 [2021-03-25 17:56:15,359 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:56:15,359 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:56:15,359 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 67 [2021-03-25 17:56:15,360 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 190 transitions, 562 flow [2021-03-25 17:56:15,360 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 17:56:15,360 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:56:15,360 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 17:56:15,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 17:56:15,360 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 17:56:15,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:56:15,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1433291429, now seen corresponding path program 1 times [2021-03-25 17:56:15,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:56:15,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079675633] [2021-03-25 17:56:15,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:56:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:56:15,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:15,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:56:15,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:15,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:56:15,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:15,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:56:15,385 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 17:56:15,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079675633] [2021-03-25 17:56:15,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:56:15,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:56:15,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61653125] [2021-03-25 17:56:15,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:56:15,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:56:15,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:56:15,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:56:15,387 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-25 17:56:15,387 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 17:56:15,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:56:15,388 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-25 17:56:15,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:56:15,415 INFO L129 PetriNetUnfolder]: 355/555 cut-off events. [2021-03-25 17:56:15,415 INFO L130 PetriNetUnfolder]: For 169/169 co-relation queries the response was YES. [2021-03-25 17:56:15,416 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 17:56:15,418 INFO L132 encePairwiseOnDemand]: 288/303 looper letters, 1 selfloop transitions, 1 changer transitions 0/126 dead transitions. [2021-03-25 17:56:15,418 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 126 transitions, 374 flow [2021-03-25 17:56:15,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:56:15,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:56:15,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-03-25 17:56:15,422 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-03-25 17:56:15,422 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-03-25 17:56:15,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-03-25 17:56:15,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:56:15,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-03-25 17:56:15,424 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 17:56:15,425 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 17:56:15,425 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 17:56:15,426 INFO L185 Difference]: Start difference. First operand has 70 places, 190 transitions, 562 flow. Second operand 3 states and 877 transitions. [2021-03-25 17:56:15,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 126 transitions, 374 flow [2021-03-25 17:56:15,427 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 17:56:15,428 INFO L241 Difference]: Finished difference. Result has 71 places, 126 transitions, 371 flow [2021-03-25 17:56:15,428 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 17:56:15,428 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -21 predicate places. [2021-03-25 17:56:15,429 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:56:15,429 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 126 transitions, 371 flow [2021-03-25 17:56:15,429 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 126 transitions, 371 flow [2021-03-25 17:56:15,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 126 transitions, 371 flow [2021-03-25 17:56:15,445 INFO L129 PetriNetUnfolder]: 355/555 cut-off events. [2021-03-25 17:56:15,445 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:56:15,446 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 17:56:15,450 INFO L142 LiptonReduction]: Number of co-enabled transitions 2240 [2021-03-25 17:56:15,456 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:56:15,456 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:56:15,456 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 27 [2021-03-25 17:56:15,457 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 126 transitions, 371 flow [2021-03-25 17:56:15,457 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 17:56:15,457 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:56:15,458 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:56:15,458 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 17:56:15,458 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 17:56:15,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:56:15,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1901519683, now seen corresponding path program 1 times [2021-03-25 17:56:15,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:56:15,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396633673] [2021-03-25 17:56:15,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:56:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:56:15,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:15,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:56:15,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:15,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:56:15,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:15,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:56:15,477 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 17:56:15,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396633673] [2021-03-25 17:56:15,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:56:15,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:56:15,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195207239] [2021-03-25 17:56:15,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:56:15,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:56:15,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:56:15,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:56:15,492 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-25 17:56:15,493 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 17:56:15,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:56:15,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-25 17:56:15,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:56:15,512 INFO L129 PetriNetUnfolder]: 129/232 cut-off events. [2021-03-25 17:56:15,512 INFO L130 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2021-03-25 17:56:15,513 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 17:56:15,513 INFO L132 encePairwiseOnDemand]: 292/303 looper letters, 1 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2021-03-25 17:56:15,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 76 transitions, 225 flow [2021-03-25 17:56:15,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:56:15,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:56:15,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 873 transitions. [2021-03-25 17:56:15,515 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9603960396039604 [2021-03-25 17:56:15,516 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 873 transitions. [2021-03-25 17:56:15,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 873 transitions. [2021-03-25 17:56:15,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:56:15,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 873 transitions. [2021-03-25 17:56:15,517 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 17:56:15,519 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 17:56:15,519 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 17:56:15,519 INFO L185 Difference]: Start difference. First operand has 71 places, 126 transitions, 371 flow. Second operand 3 states and 873 transitions. [2021-03-25 17:56:15,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 76 transitions, 225 flow [2021-03-25 17:56:15,520 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 17:56:15,521 INFO L241 Difference]: Finished difference. Result has 72 places, 76 transitions, 222 flow [2021-03-25 17:56:15,521 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 17:56:15,521 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -20 predicate places. [2021-03-25 17:56:15,521 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:56:15,521 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 76 transitions, 222 flow [2021-03-25 17:56:15,522 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 76 transitions, 222 flow [2021-03-25 17:56:15,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 76 transitions, 222 flow [2021-03-25 17:56:15,531 INFO L129 PetriNetUnfolder]: 129/232 cut-off events. [2021-03-25 17:56:15,531 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:56:15,532 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 17:56:15,533 INFO L142 LiptonReduction]: Number of co-enabled transitions 1440 [2021-03-25 17:56:15,536 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:56:15,536 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:56:15,536 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15 [2021-03-25 17:56:15,537 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 222 flow [2021-03-25 17:56:15,537 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 17:56:15,537 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:56:15,537 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 17:56:15,538 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 17:56:15,538 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 17:56:15,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:56:15,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1119967421, now seen corresponding path program 1 times [2021-03-25 17:56:15,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:56:15,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188221088] [2021-03-25 17:56:15,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:56:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:56:15,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:15,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:56:15,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:15,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:56:15,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:15,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:56:15,561 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 17:56:15,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188221088] [2021-03-25 17:56:15,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:56:15,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:56:15,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126429725] [2021-03-25 17:56:15,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:56:15,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:56:15,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:56:15,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:56:15,563 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-03-25 17:56:15,564 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 17:56:15,564 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:56:15,564 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-03-25 17:56:15,564 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:56:15,576 INFO L129 PetriNetUnfolder]: 54/131 cut-off events. [2021-03-25 17:56:15,576 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-25 17:56:15,576 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 17:56:15,577 INFO L132 encePairwiseOnDemand]: 298/303 looper letters, 2 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2021-03-25 17:56:15,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 72 transitions, 216 flow [2021-03-25 17:56:15,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:56:15,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:56:15,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 868 transitions. [2021-03-25 17:56:15,579 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9548954895489549 [2021-03-25 17:56:15,579 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 868 transitions. [2021-03-25 17:56:15,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 868 transitions. [2021-03-25 17:56:15,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:56:15,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 868 transitions. [2021-03-25 17:56:15,581 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 17:56:15,582 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 17:56:15,582 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 17:56:15,582 INFO L185 Difference]: Start difference. First operand has 72 places, 76 transitions, 222 flow. Second operand 3 states and 868 transitions. [2021-03-25 17:56:15,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 72 transitions, 216 flow [2021-03-25 17:56:15,583 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 17:56:15,584 INFO L241 Difference]: Finished difference. Result has 73 places, 72 transitions, 211 flow [2021-03-25 17:56:15,585 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 17:56:15,585 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -19 predicate places. [2021-03-25 17:56:15,585 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:56:15,585 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 72 transitions, 211 flow [2021-03-25 17:56:15,585 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 72 transitions, 211 flow [2021-03-25 17:56:15,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 72 transitions, 211 flow [2021-03-25 17:56:15,592 INFO L129 PetriNetUnfolder]: 54/131 cut-off events. [2021-03-25 17:56:15,592 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:56:15,592 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 17:56:15,593 INFO L142 LiptonReduction]: Number of co-enabled transitions 1288 [2021-03-25 17:56:15,595 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:56:15,595 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:56:15,595 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-03-25 17:56:15,596 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 211 flow [2021-03-25 17:56:15,596 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 17:56:15,596 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:56:15,596 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 17:56:15,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 17:56:15,596 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 17:56:15,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:56:15,597 INFO L82 PathProgramCache]: Analyzing trace with hash -939585247, now seen corresponding path program 1 times [2021-03-25 17:56:15,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:56:15,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156409871] [2021-03-25 17:56:15,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:56:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:56:15,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:15,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:56:15,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:56:15,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:56:15,774 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 17:56:15,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 17:56:15,797 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-25 17:56:15,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 17:56:15,832 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-25 17:56:15,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-25 17:56:15,867 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-25 17:56:15,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-25 17:56:15,920 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-03-25 17:56:15,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-25 17:56:15,976 INFO L142 QuantifierPusher]: treesize reduction 45, result has 59.1 percent of original size [2021-03-25 17:56:15,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-25 17:56:16,054 INFO L142 QuantifierPusher]: treesize reduction 54, result has 57.5 percent of original size [2021-03-25 17:56:16,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-25 17:56:16,140 INFO L142 QuantifierPusher]: treesize reduction 63, result has 54.3 percent of original size [2021-03-25 17:56:16,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-03-25 17:56:16,253 INFO L142 QuantifierPusher]: treesize reduction 72, result has 53.5 percent of original size [2021-03-25 17:56:16,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-03-25 17:56:16,381 INFO L142 QuantifierPusher]: treesize reduction 81, result has 52.9 percent of original size [2021-03-25 17:56:16,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-03-25 17:56:16,511 INFO L142 QuantifierPusher]: treesize reduction 90, result has 52.4 percent of original size [2021-03-25 17:56:16,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-03-25 17:56:16,643 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-03-25 17:56:16,654 INFO L142 QuantifierPusher]: treesize reduction 108, result has 48.8 percent of original size [2021-03-25 17:56:16,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-03-25 17:56:16,773 INFO L142 QuantifierPusher]: treesize reduction 117, result has 48.7 percent of original size [2021-03-25 17:56:16,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-03-25 17:56:16,893 INFO L142 QuantifierPusher]: treesize reduction 126, result has 47.3 percent of original size [2021-03-25 17:56:16,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-25 17:56:16,992 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 17:56:16,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156409871] [2021-03-25 17:56:16,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:56:16,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-25 17:56:16,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638368084] [2021-03-25 17:56:16,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-25 17:56:16,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:56:16,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-25 17:56:16,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-03-25 17:56:16,996 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 303 [2021-03-25 17:56:17,000 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 17:56:17,000 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:56:17,000 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 303 [2021-03-25 17:56:17,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand