/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-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_15.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 18:58:52,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 18:58:52,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 18:58:53,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-11 18:58:53,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-11 18:58:53,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-11 18:58:53,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-11 18:58:53,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-11 18:58:53,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-11 18:58:53,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-11 18:58:53,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-11 18:58:53,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-11 18:58:53,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-11 18:58:53,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-11 18:58:53,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-11 18:58:53,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-11 18:58:53,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-11 18:58:53,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-11 18:58:53,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-11 18:58:53,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-11 18:58:53,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-11 18:58:53,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-11 18:58:53,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-11 18:58:53,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-11 18:58:53,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-11 18:58:53,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-11 18:58:53,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-11 18:58:53,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-11 18:58:53,089 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-06-11 18:58:53,123 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 18:58:53,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 18:58:53,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 18:58:53,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 18:58:53,126 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 18:58:53,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 18:58:53,126 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 18:58:53,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 18:58:53,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 18:58:53,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 18:58:53,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 18:58:53,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 18:58:53,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 18:58:53,128 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 18:58:53,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 18:58:53,128 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 18:58:53,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 18:58:53,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 18:58:53,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 18:58:53,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 18:58:53,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 18:58:53,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 18:58:53,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 18:58:53,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 18:58:53,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 18:58:53,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 18:58:53,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 18:58:53,130 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-06-11 18:58:53,130 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 18:58:53,130 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-11 18:58:53,130 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 18:58:53,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 18:58:53,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 18:58:53,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 18:58:53,413 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-11 18:58:53,414 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-11 18:58:53,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_15.bpl [2021-06-11 18:58:53,415 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_15.bpl' [2021-06-11 18:58:53,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 18:58:53,449 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-11 18:58:53,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 18:58:53,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 18:58:53,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 18:58:53,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:58:53" (1/1) ... [2021-06-11 18:58:53,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:58:53" (1/1) ... [2021-06-11 18:58:53,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 18:58:53,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 18:58:53,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 18:58:53,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 18:58:53,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:58:53" (1/1) ... [2021-06-11 18:58:53,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:58:53" (1/1) ... [2021-06-11 18:58:53,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:58:53" (1/1) ... [2021-06-11 18:58:53,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:58:53" (1/1) ... [2021-06-11 18:58:53,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:58:53" (1/1) ... [2021-06-11 18:58:53,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:58:53" (1/1) ... [2021-06-11 18:58:53,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:58:53" (1/1) ... [2021-06-11 18:58:53,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 18:58:53,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 18:58:53,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 18:58:53,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 18:58:53,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:58:53" (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 [2021-06-11 18:58:53,564 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_14 given in one single declaration [2021-06-11 18:58:53,564 INFO L130 BoogieDeclarations]: Found specification of procedure set_14 [2021-06-11 18:58:53,564 INFO L138 BoogieDeclarations]: Found implementation of procedure set_14 [2021-06-11 18:58:53,564 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-06-11 18:58:53,564 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-06-11 18:58:53,564 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-06-11 18:58:53,565 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-06-11 18:58:53,565 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-06-11 18:58:53,565 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-06-11 18:58:53,565 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-06-11 18:58:53,565 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-06-11 18:58:53,565 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-06-11 18:58:53,565 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-06-11 18:58:53,566 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-06-11 18:58:53,566 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-06-11 18:58:53,566 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-06-11 18:58:53,566 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-06-11 18:58:53,566 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-06-11 18:58:53,566 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-06-11 18:58:53,566 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-06-11 18:58:53,566 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-06-11 18:58:53,567 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-11 18:58:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 18:58:53,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 18:58:53,567 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2021-06-11 18:58:53,567 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2021-06-11 18:58:53,567 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2021-06-11 18:58:53,567 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-06-11 18:58:53,568 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-06-11 18:58:53,568 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-06-11 18:58:53,568 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_13 given in one single declaration [2021-06-11 18:58:53,568 INFO L130 BoogieDeclarations]: Found specification of procedure set_13 [2021-06-11 18:58:53,568 INFO L138 BoogieDeclarations]: Found implementation of procedure set_13 [2021-06-11 18:58:53,568 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-06-11 18:58:53,568 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-06-11 18:58:53,569 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-06-11 18:58:53,569 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-06-11 18:58:53,569 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-06-11 18:58:53,569 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-06-11 18:58:53,569 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-06-11 18:58:53,569 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-06-11 18:58:53,569 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-06-11 18:58:53,570 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2021-06-11 18:58:53,570 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2021-06-11 18:58:53,570 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2021-06-11 18:58:53,570 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-06-11 18:58:53,570 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-06-11 18:58:53,570 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-06-11 18:58:53,571 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-11 18:58:53,728 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 18:58:53,728 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-11 18:58:53,730 INFO L202 PluginConnector]: Adding new model example_15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 06:58:53 BoogieIcfgContainer [2021-06-11 18:58:53,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 18:58:53,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 18:58:53,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 18:58:53,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 18:58:53,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:58:53" (1/2) ... [2021-06-11 18:58:53,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1016efed and model type example_15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 06:58:53, skipping insertion in model container [2021-06-11 18:58:53,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 06:58:53" (2/2) ... [2021-06-11 18:58:53,736 INFO L111 eAbstractionObserver]: Analyzing ICFG example_15.bpl [2021-06-11 18:58:53,756 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 18:58:53,759 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-11 18:58:53,760 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 18:58:54,098 INFO L149 ThreadInstanceAdder]: Constructed 225 joinOtherThreadTransitions. [2021-06-11 18:58:54,114 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-06-11 18:58:54,132 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 18:58:54,132 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 18:58:54,133 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 18:58:54,133 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 18:58:54,133 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 18:58:54,133 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 18:58:54,133 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 18:58:54,133 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 18:58:54,148 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 124 places, 288 transitions, 1326 flow [2021-06-11 18:59:12,804 INFO L129 PetriNetUnfolder]: 212993/245808 cut-off events. [2021-06-11 18:59:12,805 INFO L130 PetriNetUnfolder]: For 245760/245760 co-relation queries the response was YES. [2021-06-11 18:59:14,558 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. [2021-06-11 18:59:14,558 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 288 transitions, 1326 flow [2021-06-11 18:59:15,997 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 271 transitions, 1262 flow [2021-06-11 18:59:15,998 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 18:59:16,012 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 271 transitions, 1262 flow [2021-06-11 18:59:16,015 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 271 transitions, 1262 flow [2021-06-11 18:59:16,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 107 places, 271 transitions, 1262 flow [2021-06-11 18:59:33,310 INFO L129 PetriNetUnfolder]: 212993/245806 cut-off events. [2021-06-11 18:59:33,311 INFO L130 PetriNetUnfolder]: For 245760/245760 co-relation queries the response was YES. [2021-06-11 18:59:35,435 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. [2021-06-11 18:59:41,030 INFO L151 LiptonReduction]: Number of co-enabled transitions 13020 [2021-06-11 18:59:41,340 INFO L163 LiptonReduction]: Checked pairs total: 3465 [2021-06-11 18:59:41,340 INFO L165 LiptonReduction]: Total number of compositions: 15 [2021-06-11 18:59:41,342 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 25345 [2021-06-11 18:59:56,679 INFO L129 PetriNetUnfolder]: 212993/245790 cut-off events. [2021-06-11 18:59:56,680 INFO L130 PetriNetUnfolder]: For 245760/245760 co-relation queries the response was YES. [2021-06-11 18:59:56,680 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 18:59:56,681 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] [2021-06-11 18:59:56,681 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]=== [2021-06-11 18:59:56,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 18:59:56,685 INFO L82 PathProgramCache]: Analyzing trace with hash 873046711, now seen corresponding path program 1 times [2021-06-11 18:59:56,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 18:59:56,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884422894] [2021-06-11 18:59:56,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 18:59:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 18:59:56,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:59:56,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:59:56,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:59:56,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 18:59:56,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:59:56,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:59:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 18:59:56,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884422894] [2021-06-11 18:59:56,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 18:59:56,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 18:59:56,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276173770] [2021-06-11 18:59:56,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 18:59:56,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 18:59:56,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 18:59:56,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 18:59:56,913 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-06-11 18:59:56,918 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) [2021-06-11 18:59:56,918 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 18:59:56,918 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-06-11 18:59:56,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:00:05,609 INFO L129 PetriNetUnfolder]: 98501/115021 cut-off events. [2021-06-11 19:00:05,609 INFO L130 PetriNetUnfolder]: For 164037/164037 co-relation queries the response was YES. [2021-06-11 19:00:06,345 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. [2021-06-11 19:00:06,889 INFO L132 encePairwiseOnDemand]: 290/303 looper letters, 3 selfloop transitions, 1 changer transitions 0/244 dead transitions. [2021-06-11 19:00:06,890 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 244 transitions, 1180 flow [2021-06-11 19:00:06,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 19:00:06,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 19:00:06,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-06-11 19:00:06,903 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-06-11 19:00:06,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-06-11 19:00:06,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-06-11 19:00:06,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:00:06,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-06-11 19:00:06,913 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) [2021-06-11 19:00:06,921 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) [2021-06-11 19:00:06,922 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) [2021-06-11 19:00:06,924 INFO L185 Difference]: Start difference. First operand has 92 places, 256 transitions, 1232 flow. Second operand 3 states and 877 transitions. [2021-06-11 19:00:06,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 244 transitions, 1180 flow [2021-06-11 19:00:08,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 244 transitions, 724 flow, removed 0 selfloop flow, removed 30 redundant places. [2021-06-11 19:00:08,740 INFO L241 Difference]: Finished difference. Result has 64 places, 244 transitions, 718 flow [2021-06-11 19:00:08,741 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} [2021-06-11 19:00:08,742 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -28 predicate places. [2021-06-11 19:00:08,742 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:00:08,743 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 244 transitions, 718 flow [2021-06-11 19:00:08,743 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 244 transitions, 718 flow [2021-06-11 19:00:08,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 244 transitions, 718 flow [2021-06-11 19:00:13,215 INFO L129 PetriNetUnfolder]: 98501/115021 cut-off events. [2021-06-11 19:00:13,216 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 19:00:13,598 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. [2021-06-11 19:00:14,975 INFO L151 LiptonReduction]: Number of co-enabled transitions 5964 [2021-06-11 19:00:15,001 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:00:15,002 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:00:15,002 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6260 [2021-06-11 19:00:15,008 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 244 transitions, 718 flow [2021-06-11 19:00:15,009 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) [2021-06-11 19:00:15,009 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:00:15,010 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] [2021-06-11 19:00:15,010 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 19:00:15,010 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]=== [2021-06-11 19:00:15,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:00:15,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1941928801, now seen corresponding path program 1 times [2021-06-11 19:00:15,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:00:15,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577052653] [2021-06-11 19:00:15,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:00:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:00:15,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:15,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:00:15,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:15,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 19:00:15,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:15,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:00:15,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:00:15,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577052653] [2021-06-11 19:00:15,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:00:15,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 19:00:15,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108478485] [2021-06-11 19:00:15,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 19:00:15,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:00:15,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 19:00:15,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 19:00:15,058 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-06-11 19:00:15,059 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) [2021-06-11 19:00:15,059 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:00:15,059 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-06-11 19:00:15,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:00:18,607 INFO L129 PetriNetUnfolder]: 65871/78295 cut-off events. [2021-06-11 19:00:18,607 INFO L130 PetriNetUnfolder]: For 8206/8206 co-relation queries the response was YES. [2021-06-11 19:00:18,881 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. [2021-06-11 19:00:19,153 INFO L132 encePairwiseOnDemand]: 295/303 looper letters, 8 selfloop transitions, 1 changer transitions 0/237 dead transitions. [2021-06-11 19:00:19,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 237 transitions, 715 flow [2021-06-11 19:00:19,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 19:00:19,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 19:00:19,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-06-11 19:00:19,156 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-06-11 19:00:19,157 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-06-11 19:00:19,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-06-11 19:00:19,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:00:19,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-06-11 19:00:19,159 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) [2021-06-11 19:00:19,162 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) [2021-06-11 19:00:19,162 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) [2021-06-11 19:00:19,162 INFO L185 Difference]: Start difference. First operand has 64 places, 244 transitions, 718 flow. Second operand 3 states and 877 transitions. [2021-06-11 19:00:19,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 237 transitions, 715 flow [2021-06-11 19:00:19,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 237 transitions, 714 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 19:00:19,198 INFO L241 Difference]: Finished difference. Result has 65 places, 237 transitions, 698 flow [2021-06-11 19:00:19,198 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} [2021-06-11 19:00:19,199 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -27 predicate places. [2021-06-11 19:00:19,199 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:00:19,199 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 237 transitions, 698 flow [2021-06-11 19:00:19,199 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 237 transitions, 698 flow [2021-06-11 19:00:19,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 237 transitions, 698 flow [2021-06-11 19:00:22,194 INFO L129 PetriNetUnfolder]: 65871/78295 cut-off events. [2021-06-11 19:00:22,195 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 19:00:22,435 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. [2021-06-11 19:00:23,191 INFO L151 LiptonReduction]: Number of co-enabled transitions 5768 [2021-06-11 19:00:23,216 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:00:23,216 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:00:23,216 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4017 [2021-06-11 19:00:23,217 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 237 transitions, 698 flow [2021-06-11 19:00:23,218 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) [2021-06-11 19:00:23,218 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:00:23,218 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] [2021-06-11 19:00:23,218 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-11 19:00:23,219 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]=== [2021-06-11 19:00:23,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:00:23,219 INFO L82 PathProgramCache]: Analyzing trace with hash 607927321, now seen corresponding path program 1 times [2021-06-11 19:00:23,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:00:23,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277327540] [2021-06-11 19:00:23,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:00:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:00:23,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:23,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:00:23,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:23,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 19:00:23,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:23,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:00:23,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:00:23,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277327540] [2021-06-11 19:00:23,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:00:23,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 19:00:23,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233914974] [2021-06-11 19:00:23,261 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 19:00:23,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:00:23,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 19:00:23,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 19:00:23,263 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-06-11 19:00:23,264 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) [2021-06-11 19:00:23,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:00:23,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-06-11 19:00:23,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:00:24,911 INFO L129 PetriNetUnfolder]: 31308/38219 cut-off events. [2021-06-11 19:00:24,912 INFO L130 PetriNetUnfolder]: For 5696/5696 co-relation queries the response was YES. [2021-06-11 19:00:25,022 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. [2021-06-11 19:00:25,160 INFO L132 encePairwiseOnDemand]: 293/303 looper letters, 6 selfloop transitions, 1 changer transitions 0/228 dead transitions. [2021-06-11 19:00:25,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 228 transitions, 685 flow [2021-06-11 19:00:25,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 19:00:25,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 19:00:25,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-06-11 19:00:25,162 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-06-11 19:00:25,162 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-06-11 19:00:25,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-06-11 19:00:25,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:00:25,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-06-11 19:00:25,164 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) [2021-06-11 19:00:25,167 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) [2021-06-11 19:00:25,168 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) [2021-06-11 19:00:25,168 INFO L185 Difference]: Start difference. First operand has 65 places, 237 transitions, 698 flow. Second operand 3 states and 877 transitions. [2021-06-11 19:00:25,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 228 transitions, 685 flow [2021-06-11 19:00:25,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 228 transitions, 684 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 19:00:25,182 INFO L241 Difference]: Finished difference. Result has 66 places, 228 transitions, 672 flow [2021-06-11 19:00:25,186 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} [2021-06-11 19:00:25,186 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -26 predicate places. [2021-06-11 19:00:25,187 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:00:25,187 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 228 transitions, 672 flow [2021-06-11 19:00:25,188 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 228 transitions, 672 flow [2021-06-11 19:00:25,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 228 transitions, 672 flow [2021-06-11 19:00:26,523 INFO L129 PetriNetUnfolder]: 31308/38219 cut-off events. [2021-06-11 19:00:26,526 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 19:00:26,650 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. [2021-06-11 19:00:26,942 INFO L151 LiptonReduction]: Number of co-enabled transitions 5516 [2021-06-11 19:00:26,961 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:00:26,961 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:00:26,961 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1775 [2021-06-11 19:00:26,962 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 228 transitions, 672 flow [2021-06-11 19:00:26,963 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) [2021-06-11 19:00:26,963 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:00:26,963 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] [2021-06-11 19:00:26,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-11 19:00:26,963 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]=== [2021-06-11 19:00:26,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:00:26,964 INFO L82 PathProgramCache]: Analyzing trace with hash -926207163, now seen corresponding path program 1 times [2021-06-11 19:00:26,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:00:26,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999330391] [2021-06-11 19:00:26,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:00:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:00:26,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:26,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:00:26,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:26,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 19:00:26,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:26,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:00:26,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:00:26,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999330391] [2021-06-11 19:00:26,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:00:26,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 19:00:26,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766275964] [2021-06-11 19:00:26,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 19:00:26,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:00:26,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 19:00:26,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 19:00:26,995 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-06-11 19:00:26,996 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) [2021-06-11 19:00:26,996 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:00:26,996 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-06-11 19:00:26,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:00:28,164 INFO L129 PetriNetUnfolder]: 24290/30177 cut-off events. [2021-06-11 19:00:28,165 INFO L130 PetriNetUnfolder]: For 2923/2923 co-relation queries the response was YES. [2021-06-11 19:00:28,284 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. [2021-06-11 19:00:28,404 INFO L132 encePairwiseOnDemand]: 296/303 looper letters, 9 selfloop transitions, 1 changer transitions 0/222 dead transitions. [2021-06-11 19:00:28,404 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 222 transitions, 674 flow [2021-06-11 19:00:28,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 19:00:28,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 19:00:28,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-06-11 19:00:28,406 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-06-11 19:00:28,406 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-06-11 19:00:28,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-06-11 19:00:28,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:00:28,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-06-11 19:00:28,409 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) [2021-06-11 19:00:28,410 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) [2021-06-11 19:00:28,411 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) [2021-06-11 19:00:28,411 INFO L185 Difference]: Start difference. First operand has 66 places, 228 transitions, 672 flow. Second operand 3 states and 877 transitions. [2021-06-11 19:00:28,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 222 transitions, 674 flow [2021-06-11 19:00:28,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 222 transitions, 673 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 19:00:28,416 INFO L241 Difference]: Finished difference. Result has 67 places, 222 transitions, 655 flow [2021-06-11 19:00:28,417 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} [2021-06-11 19:00:28,417 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -25 predicate places. [2021-06-11 19:00:28,417 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:00:28,417 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 222 transitions, 655 flow [2021-06-11 19:00:28,417 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 222 transitions, 655 flow [2021-06-11 19:00:28,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 222 transitions, 655 flow [2021-06-11 19:00:29,304 INFO L129 PetriNetUnfolder]: 24290/30177 cut-off events. [2021-06-11 19:00:29,304 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 19:00:29,397 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. [2021-06-11 19:00:29,667 INFO L151 LiptonReduction]: Number of co-enabled transitions 5348 [2021-06-11 19:00:29,681 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:00:29,681 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:00:29,681 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1264 [2021-06-11 19:00:29,682 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 222 transitions, 655 flow [2021-06-11 19:00:29,683 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) [2021-06-11 19:00:29,683 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:00:29,683 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] [2021-06-11 19:00:29,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-11 19:00:29,683 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]=== [2021-06-11 19:00:29,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:00:29,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1646851433, now seen corresponding path program 1 times [2021-06-11 19:00:29,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:00:29,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083071757] [2021-06-11 19:00:29,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:00:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:00:29,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:29,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:00:29,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:29,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 19:00:29,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:29,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:00:29,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:00:29,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083071757] [2021-06-11 19:00:29,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:00:29,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 19:00:29,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482193772] [2021-06-11 19:00:29,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 19:00:29,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:00:29,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 19:00:29,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 19:00:29,705 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-06-11 19:00:29,706 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) [2021-06-11 19:00:29,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:00:29,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-06-11 19:00:29,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:00:30,067 INFO L129 PetriNetUnfolder]: 8502/11001 cut-off events. [2021-06-11 19:00:30,067 INFO L130 PetriNetUnfolder]: For 2285/2285 co-relation queries the response was YES. [2021-06-11 19:00:30,086 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. [2021-06-11 19:00:30,112 INFO L132 encePairwiseOnDemand]: 291/303 looper letters, 4 selfloop transitions, 1 changer transitions 0/211 dead transitions. [2021-06-11 19:00:30,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 211 transitions, 632 flow [2021-06-11 19:00:30,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 19:00:30,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 19:00:30,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-06-11 19:00:30,115 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-06-11 19:00:30,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-06-11 19:00:30,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-06-11 19:00:30,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:00:30,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-06-11 19:00:30,117 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) [2021-06-11 19:00:30,119 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) [2021-06-11 19:00:30,119 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) [2021-06-11 19:00:30,119 INFO L185 Difference]: Start difference. First operand has 67 places, 222 transitions, 655 flow. Second operand 3 states and 877 transitions. [2021-06-11 19:00:30,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 211 transitions, 632 flow [2021-06-11 19:00:30,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 211 transitions, 631 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 19:00:30,124 INFO L241 Difference]: Finished difference. Result has 68 places, 211 transitions, 623 flow [2021-06-11 19:00:30,124 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} [2021-06-11 19:00:30,124 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -24 predicate places. [2021-06-11 19:00:30,124 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:00:30,124 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 211 transitions, 623 flow [2021-06-11 19:00:30,125 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 211 transitions, 623 flow [2021-06-11 19:00:30,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 211 transitions, 623 flow [2021-06-11 19:00:30,407 INFO L129 PetriNetUnfolder]: 8502/11001 cut-off events. [2021-06-11 19:00:30,407 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 19:00:30,448 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. [2021-06-11 19:00:30,524 INFO L151 LiptonReduction]: Number of co-enabled transitions 5040 [2021-06-11 19:00:30,539 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:00:30,539 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:00:30,540 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 416 [2021-06-11 19:00:30,540 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 211 transitions, 623 flow [2021-06-11 19:00:30,541 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) [2021-06-11 19:00:30,541 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:00:30,541 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] [2021-06-11 19:00:30,541 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-11 19:00:30,541 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]=== [2021-06-11 19:00:30,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:00:30,542 INFO L82 PathProgramCache]: Analyzing trace with hash -945345547, now seen corresponding path program 1 times [2021-06-11 19:00:30,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:00:30,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805536035] [2021-06-11 19:00:30,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:00:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:00:30,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:30,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:00:30,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:30,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 19:00:30,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:30,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:00:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:00:30,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805536035] [2021-06-11 19:00:30,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:00:30,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 19:00:30,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615822710] [2021-06-11 19:00:30,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 19:00:30,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:00:30,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 19:00:30,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 19:00:30,565 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-06-11 19:00:30,566 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) [2021-06-11 19:00:30,566 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:00:30,566 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-06-11 19:00:30,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:00:30,767 INFO L129 PetriNetUnfolder]: 4371/5948 cut-off events. [2021-06-11 19:00:30,767 INFO L130 PetriNetUnfolder]: For 912/912 co-relation queries the response was YES. [2021-06-11 19:00:30,780 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. [2021-06-11 19:00:30,795 INFO L132 encePairwiseOnDemand]: 294/303 looper letters, 7 selfloop transitions, 1 changer transitions 0/203 dead transitions. [2021-06-11 19:00:30,795 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 203 transitions, 615 flow [2021-06-11 19:00:30,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 19:00:30,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 19:00:30,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-06-11 19:00:30,797 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-06-11 19:00:30,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-06-11 19:00:30,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-06-11 19:00:30,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:00:30,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-06-11 19:00:30,799 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) [2021-06-11 19:00:30,801 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) [2021-06-11 19:00:30,802 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) [2021-06-11 19:00:30,802 INFO L185 Difference]: Start difference. First operand has 68 places, 211 transitions, 623 flow. Second operand 3 states and 877 transitions. [2021-06-11 19:00:30,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 203 transitions, 615 flow [2021-06-11 19:00:30,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 203 transitions, 614 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 19:00:30,806 INFO L241 Difference]: Finished difference. Result has 69 places, 203 transitions, 600 flow [2021-06-11 19:00:30,806 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} [2021-06-11 19:00:30,806 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -23 predicate places. [2021-06-11 19:00:30,806 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:00:30,807 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 203 transitions, 600 flow [2021-06-11 19:00:30,807 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 203 transitions, 600 flow [2021-06-11 19:00:30,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 203 transitions, 600 flow [2021-06-11 19:00:31,001 INFO L129 PetriNetUnfolder]: 4371/5948 cut-off events. [2021-06-11 19:00:31,001 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 19:00:31,008 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. [2021-06-11 19:00:31,031 INFO L151 LiptonReduction]: Number of co-enabled transitions 4816 [2021-06-11 19:00:31,042 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:00:31,043 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:00:31,043 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 237 [2021-06-11 19:00:31,043 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 203 transitions, 600 flow [2021-06-11 19:00:31,044 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) [2021-06-11 19:00:31,044 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:00:31,044 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] [2021-06-11 19:00:31,044 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-11 19:00:31,044 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]=== [2021-06-11 19:00:31,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:00:31,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1105824269, now seen corresponding path program 1 times [2021-06-11 19:00:31,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:00:31,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689951100] [2021-06-11 19:00:31,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:00:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:00:31,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:31,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:00:31,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:31,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 19:00:31,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:31,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:00:31,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:00:31,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689951100] [2021-06-11 19:00:31,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:00:31,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 19:00:31,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261368592] [2021-06-11 19:00:31,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 19:00:31,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:00:31,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 19:00:31,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 19:00:31,072 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-06-11 19:00:31,073 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) [2021-06-11 19:00:31,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:00:31,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-06-11 19:00:31,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:00:31,153 INFO L129 PetriNetUnfolder]: 1174/1708 cut-off events. [2021-06-11 19:00:31,153 INFO L130 PetriNetUnfolder]: For 489/489 co-relation queries the response was YES. [2021-06-11 19:00:31,158 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. [2021-06-11 19:00:31,163 INFO L132 encePairwiseOnDemand]: 289/303 looper letters, 2 selfloop transitions, 1 changer transitions 0/190 dead transitions. [2021-06-11 19:00:31,163 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 190 transitions, 567 flow [2021-06-11 19:00:31,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 19:00:31,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 19:00:31,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-06-11 19:00:31,165 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-06-11 19:00:31,165 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-06-11 19:00:31,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-06-11 19:00:31,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:00:31,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-06-11 19:00:31,167 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) [2021-06-11 19:00:31,169 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) [2021-06-11 19:00:31,169 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) [2021-06-11 19:00:31,169 INFO L185 Difference]: Start difference. First operand has 69 places, 203 transitions, 600 flow. Second operand 3 states and 877 transitions. [2021-06-11 19:00:31,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 190 transitions, 567 flow [2021-06-11 19:00:31,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 190 transitions, 566 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 19:00:31,173 INFO L241 Difference]: Finished difference. Result has 70 places, 190 transitions, 562 flow [2021-06-11 19:00:31,173 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} [2021-06-11 19:00:31,173 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -22 predicate places. [2021-06-11 19:00:31,173 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:00:31,174 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 190 transitions, 562 flow [2021-06-11 19:00:31,174 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 190 transitions, 562 flow [2021-06-11 19:00:31,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 190 transitions, 562 flow [2021-06-11 19:00:31,227 INFO L129 PetriNetUnfolder]: 1174/1708 cut-off events. [2021-06-11 19:00:31,227 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 19:00:31,231 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. [2021-06-11 19:00:31,240 INFO L151 LiptonReduction]: Number of co-enabled transitions 3512 [2021-06-11 19:00:31,249 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:00:31,249 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:00:31,249 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 76 [2021-06-11 19:00:31,250 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 190 transitions, 562 flow [2021-06-11 19:00:31,250 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) [2021-06-11 19:00:31,250 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:00:31,250 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] [2021-06-11 19:00:31,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-11 19:00:31,250 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]=== [2021-06-11 19:00:31,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:00:31,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1433291429, now seen corresponding path program 1 times [2021-06-11 19:00:31,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:00:31,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397696137] [2021-06-11 19:00:31,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:00:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:00:31,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:31,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:00:31,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:31,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 19:00:31,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:31,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:00:31,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:00:31,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397696137] [2021-06-11 19:00:31,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:00:31,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 19:00:31,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116257575] [2021-06-11 19:00:31,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 19:00:31,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:00:31,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 19:00:31,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 19:00:31,272 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-06-11 19:00:31,273 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) [2021-06-11 19:00:31,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:00:31,273 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-06-11 19:00:31,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:00:31,310 INFO L129 PetriNetUnfolder]: 355/555 cut-off events. [2021-06-11 19:00:31,311 INFO L130 PetriNetUnfolder]: For 169/169 co-relation queries the response was YES. [2021-06-11 19:00:31,312 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. [2021-06-11 19:00:31,314 INFO L132 encePairwiseOnDemand]: 288/303 looper letters, 1 selfloop transitions, 1 changer transitions 0/126 dead transitions. [2021-06-11 19:00:31,314 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 126 transitions, 374 flow [2021-06-11 19:00:31,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 19:00:31,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 19:00:31,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2021-06-11 19:00:31,316 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9647964796479648 [2021-06-11 19:00:31,316 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2021-06-11 19:00:31,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2021-06-11 19:00:31,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:00:31,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2021-06-11 19:00:31,319 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) [2021-06-11 19:00:31,320 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) [2021-06-11 19:00:31,320 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) [2021-06-11 19:00:31,320 INFO L185 Difference]: Start difference. First operand has 70 places, 190 transitions, 562 flow. Second operand 3 states and 877 transitions. [2021-06-11 19:00:31,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 126 transitions, 374 flow [2021-06-11 19:00:31,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 126 transitions, 373 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 19:00:31,323 INFO L241 Difference]: Finished difference. Result has 71 places, 126 transitions, 371 flow [2021-06-11 19:00:31,323 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} [2021-06-11 19:00:31,324 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -21 predicate places. [2021-06-11 19:00:31,324 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:00:31,324 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 126 transitions, 371 flow [2021-06-11 19:00:31,324 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 126 transitions, 371 flow [2021-06-11 19:00:31,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 126 transitions, 371 flow [2021-06-11 19:00:31,346 INFO L129 PetriNetUnfolder]: 355/555 cut-off events. [2021-06-11 19:00:31,346 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 19:00:31,348 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. [2021-06-11 19:00:31,352 INFO L151 LiptonReduction]: Number of co-enabled transitions 2240 [2021-06-11 19:00:31,358 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:00:31,358 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:00:31,358 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 34 [2021-06-11 19:00:31,359 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 126 transitions, 371 flow [2021-06-11 19:00:31,359 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) [2021-06-11 19:00:31,359 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:00:31,359 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] [2021-06-11 19:00:31,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-11 19:00:31,360 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]=== [2021-06-11 19:00:31,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:00:31,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1901519683, now seen corresponding path program 1 times [2021-06-11 19:00:31,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:00:31,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977143523] [2021-06-11 19:00:31,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:00:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:00:31,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:31,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:00:31,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:31,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 19:00:31,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:31,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:00:31,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:00:31,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977143523] [2021-06-11 19:00:31,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:00:31,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 19:00:31,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463211446] [2021-06-11 19:00:31,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 19:00:31,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:00:31,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 19:00:31,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 19:00:31,381 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-06-11 19:00:31,381 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) [2021-06-11 19:00:31,382 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:00:31,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-06-11 19:00:31,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:00:31,401 INFO L129 PetriNetUnfolder]: 129/232 cut-off events. [2021-06-11 19:00:31,401 INFO L130 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2021-06-11 19:00:31,402 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. [2021-06-11 19:00:31,403 INFO L132 encePairwiseOnDemand]: 292/303 looper letters, 1 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2021-06-11 19:00:31,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 76 transitions, 225 flow [2021-06-11 19:00:31,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 19:00:31,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 19:00:31,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 873 transitions. [2021-06-11 19:00:31,405 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9603960396039604 [2021-06-11 19:00:31,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 873 transitions. [2021-06-11 19:00:31,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 873 transitions. [2021-06-11 19:00:31,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:00:31,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 873 transitions. [2021-06-11 19:00:31,407 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) [2021-06-11 19:00:31,408 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) [2021-06-11 19:00:31,408 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) [2021-06-11 19:00:31,408 INFO L185 Difference]: Start difference. First operand has 71 places, 126 transitions, 371 flow. Second operand 3 states and 873 transitions. [2021-06-11 19:00:31,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 76 transitions, 225 flow [2021-06-11 19:00:31,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 76 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 19:00:31,410 INFO L241 Difference]: Finished difference. Result has 72 places, 76 transitions, 222 flow [2021-06-11 19:00:31,410 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} [2021-06-11 19:00:31,410 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -20 predicate places. [2021-06-11 19:00:31,411 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:00:31,411 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 76 transitions, 222 flow [2021-06-11 19:00:31,411 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 76 transitions, 222 flow [2021-06-11 19:00:31,411 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 76 transitions, 222 flow [2021-06-11 19:00:31,421 INFO L129 PetriNetUnfolder]: 129/232 cut-off events. [2021-06-11 19:00:31,421 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 19:00:31,422 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. [2021-06-11 19:00:31,423 INFO L151 LiptonReduction]: Number of co-enabled transitions 1440 [2021-06-11 19:00:31,426 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:00:31,426 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:00:31,426 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15 [2021-06-11 19:00:31,427 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 222 flow [2021-06-11 19:00:31,427 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) [2021-06-11 19:00:31,427 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:00:31,428 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] [2021-06-11 19:00:31,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-11 19:00:31,428 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]=== [2021-06-11 19:00:31,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:00:31,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1119967421, now seen corresponding path program 1 times [2021-06-11 19:00:31,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:00:31,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456864266] [2021-06-11 19:00:31,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:00:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:00:31,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:31,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:00:31,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:31,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 19:00:31,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:31,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:00:31,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:00:31,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456864266] [2021-06-11 19:00:31,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:00:31,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 19:00:31,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288615744] [2021-06-11 19:00:31,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 19:00:31,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:00:31,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 19:00:31,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 19:00:31,449 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 303 [2021-06-11 19:00:31,450 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) [2021-06-11 19:00:31,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:00:31,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 303 [2021-06-11 19:00:31,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:00:31,462 INFO L129 PetriNetUnfolder]: 54/131 cut-off events. [2021-06-11 19:00:31,462 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-06-11 19:00:31,463 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. [2021-06-11 19:00:31,463 INFO L132 encePairwiseOnDemand]: 298/303 looper letters, 2 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2021-06-11 19:00:31,463 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 72 transitions, 216 flow [2021-06-11 19:00:31,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 19:00:31,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 19:00:31,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 868 transitions. [2021-06-11 19:00:31,465 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9548954895489549 [2021-06-11 19:00:31,465 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 868 transitions. [2021-06-11 19:00:31,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 868 transitions. [2021-06-11 19:00:31,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:00:31,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 868 transitions. [2021-06-11 19:00:31,467 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) [2021-06-11 19:00:31,468 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) [2021-06-11 19:00:31,468 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) [2021-06-11 19:00:31,468 INFO L185 Difference]: Start difference. First operand has 72 places, 76 transitions, 222 flow. Second operand 3 states and 868 transitions. [2021-06-11 19:00:31,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 72 transitions, 216 flow [2021-06-11 19:00:31,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 72 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 19:00:31,470 INFO L241 Difference]: Finished difference. Result has 73 places, 72 transitions, 211 flow [2021-06-11 19:00:31,470 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} [2021-06-11 19:00:31,470 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, -19 predicate places. [2021-06-11 19:00:31,470 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:00:31,471 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 72 transitions, 211 flow [2021-06-11 19:00:31,471 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 72 transitions, 211 flow [2021-06-11 19:00:31,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 72 transitions, 211 flow [2021-06-11 19:00:31,478 INFO L129 PetriNetUnfolder]: 54/131 cut-off events. [2021-06-11 19:00:31,478 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 19:00:31,478 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. [2021-06-11 19:00:31,479 INFO L151 LiptonReduction]: Number of co-enabled transitions 1288 [2021-06-11 19:00:31,481 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:00:31,481 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:00:31,481 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-06-11 19:00:31,482 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 211 flow [2021-06-11 19:00:31,482 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) [2021-06-11 19:00:31,482 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:00:31,483 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] [2021-06-11 19:00:31,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-11 19:00:31,483 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]=== [2021-06-11 19:00:31,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:00:31,483 INFO L82 PathProgramCache]: Analyzing trace with hash -939585247, now seen corresponding path program 1 times [2021-06-11 19:00:31,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:00:31,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893416341] [2021-06-11 19:00:31,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:00:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:00:31,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:31,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:00:31,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:00:31,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:00:31,658 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 19:00:31,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 19:00:31,684 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 19:00:31,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 19:00:31,735 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 19:00:31,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 19:00:31,778 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 19:00:31,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 19:00:31,836 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-06-11 19:00:31,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-11 19:00:31,905 INFO L142 QuantifierPusher]: treesize reduction 45, result has 59.1 percent of original size [2021-06-11 19:00:31,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-11 19:00:31,998 INFO L142 QuantifierPusher]: treesize reduction 54, result has 57.5 percent of original size [2021-06-11 19:00:31,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-06-11 19:00:32,087 INFO L142 QuantifierPusher]: treesize reduction 63, result has 54.3 percent of original size [2021-06-11 19:00:32,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-06-11 19:00:32,200 INFO L142 QuantifierPusher]: treesize reduction 72, result has 53.5 percent of original size [2021-06-11 19:00:32,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-06-11 19:00:32,329 INFO L142 QuantifierPusher]: treesize reduction 81, result has 52.9 percent of original size [2021-06-11 19:00:32,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-06-11 19:00:32,466 INFO L142 QuantifierPusher]: treesize reduction 90, result has 52.4 percent of original size [2021-06-11 19:00:32,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-06-11 19:00:32,607 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-06-11 19:00:32,619 INFO L142 QuantifierPusher]: treesize reduction 108, result has 48.8 percent of original size [2021-06-11 19:00:32,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-06-11 19:00:32,710 INFO L142 QuantifierPusher]: treesize reduction 117, result has 48.7 percent of original size [2021-06-11 19:00:32,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-06-11 19:00:32,811 INFO L142 QuantifierPusher]: treesize reduction 126, result has 47.3 percent of original size [2021-06-11 19:00:32,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-06-11 19:00:32,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:00:32,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893416341] [2021-06-11 19:00:32,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:00:32,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-11 19:00:32,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775248089] [2021-06-11 19:00:32,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-11 19:00:32,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:00:32,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-11 19:00:32,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-06-11 19:00:32,915 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 303 [2021-06-11 19:00:32,918 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) [2021-06-11 19:00:32,918 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:00:32,918 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 303 [2021-06-11 19:00:32,918 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:01:07,415 INFO L129 PetriNetUnfolder]: 307504/366103 cut-off events. [2021-06-11 19:01:07,415 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 19:01:10,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 710210 conditions, 366103 events. 307504/366103 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19032. Compared 1975330 event pairs, 98305 based on Foata normal form. 1/360671 useless extension candidates. Maximal degree in co-relation 710196. Up to 122881 conditions per place. [2021-06-11 19:01:12,498 INFO L132 encePairwiseOnDemand]: 287/303 looper letters, 119 selfloop transitions, 15 changer transitions 0/190 dead transitions. [2021-06-11 19:01:12,498 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 190 transitions, 715 flow [2021-06-11 19:01:12,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-11 19:01:12,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-06-11 19:01:12,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4742 transitions. [2021-06-11 19:01:12,506 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9205979421471558 [2021-06-11 19:01:12,506 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4742 transitions. [2021-06-11 19:01:12,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4742 transitions. [2021-06-11 19:01:12,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:01:12,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4742 transitions. [2021-06-11 19:01:12,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 278.94117647058823) internal successors, (4742), 17 states have internal predecessors, (4742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:01:12,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 303.0) internal successors, (5454), 18 states have internal predecessors, (5454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:01:12,523 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 303.0) internal successors, (5454), 18 states have internal predecessors, (5454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:01:12,523 INFO L185 Difference]: Start difference. First operand has 73 places, 72 transitions, 211 flow. Second operand 17 states and 4742 transitions. [2021-06-11 19:01:12,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 190 transitions, 715 flow [2021-06-11 19:01:12,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 190 transitions, 714 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 19:01:12,532 INFO L241 Difference]: Finished difference. Result has 103 places, 86 transitions, 327 flow [2021-06-11 19:01:12,532 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=327, PETRI_PLACES=103, PETRI_TRANSITIONS=86} [2021-06-11 19:01:12,533 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, 11 predicate places. [2021-06-11 19:01:12,533 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:01:12,533 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 86 transitions, 327 flow [2021-06-11 19:01:12,533 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 86 transitions, 327 flow [2021-06-11 19:01:12,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 103 places, 86 transitions, 327 flow [2021-06-11 19:01:12,578 INFO L129 PetriNetUnfolder]: 349/747 cut-off events. [2021-06-11 19:01:12,578 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2021-06-11 19:01:12,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 747 events. 349/747 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3986 event pairs, 0 based on Foata normal form. 0/638 useless extension candidates. Maximal degree in co-relation 845. Up to 183 conditions per place. [2021-06-11 19:01:12,585 INFO L151 LiptonReduction]: Number of co-enabled transitions 2284 [2021-06-11 19:01:12,588 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:01:12,588 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:01:12,588 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 55 [2021-06-11 19:01:12,588 INFO L480 AbstractCegarLoop]: Abstraction has has 103 places, 86 transitions, 327 flow [2021-06-11 19:01:12,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 271.94117647058823) internal successors, (4623), 17 states have internal predecessors, (4623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:01:12,590 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:01:12,590 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] [2021-06-11 19:01:12,590 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-11 19:01:12,590 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-11 19:01:12,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:01:12,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1389179091, now seen corresponding path program 2 times [2021-06-11 19:01:12,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:01:12,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573393469] [2021-06-11 19:01:12,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:01:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:01:12,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:01:12,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:01:12,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:01:12,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:01:12,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:01:12,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 19:01:12,724 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 19:01:12,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 19:01:12,737 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 19:01:12,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 19:01:12,757 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 19:01:12,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 19:01:12,780 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 19:01:12,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 19:01:12,809 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-11 19:01:12,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-11 19:01:12,846 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-11 19:01:12,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-11 19:01:12,893 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-06-11 19:01:12,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-06-11 19:01:12,956 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-06-11 19:01:12,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-06-11 19:01:13,026 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-06-11 19:01:13,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-06-11 19:01:13,108 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-06-11 19:01:13,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-06-11 19:01:13,191 INFO L142 QuantifierPusher]: treesize reduction 99, result has 50.5 percent of original size [2021-06-11 19:01:13,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-06-11 19:01:13,281 INFO L142 QuantifierPusher]: treesize reduction 108, result has 50.2 percent of original size [2021-06-11 19:01:13,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-06-11 19:01:13,384 INFO L142 QuantifierPusher]: treesize reduction 126, result has 47.3 percent of original size [2021-06-11 19:01:13,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-06-11 19:01:13,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:01:13,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573393469] [2021-06-11 19:01:13,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:01:13,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-11 19:01:13,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358190544] [2021-06-11 19:01:13,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-11 19:01:13,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:01:13,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-11 19:01:13,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-06-11 19:01:13,483 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 303 [2021-06-11 19:01:13,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 86 transitions, 327 flow. Second operand has 17 states, 17 states have (on average 271.94117647058823) internal successors, (4623), 17 states have internal predecessors, (4623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:01:13,492 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:01:13,492 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 303 [2021-06-11 19:01:13,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand