/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 09:43:27,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 09:43:27,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 09:43:27,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-11 09:43:27,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-11 09:43:27,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-11 09:43:27,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-11 09:43:27,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-11 09:43:27,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-11 09:43:27,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-11 09:43:27,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-11 09:43:27,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-11 09:43:27,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-11 09:43:27,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-11 09:43:27,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-11 09:43:27,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-11 09:43:27,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-11 09:43:27,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-11 09:43:27,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-11 09:43:27,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-11 09:43:27,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-11 09:43:27,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-11 09:43:27,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-11 09:43:27,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-11 09:43:27,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-11 09:43:27,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-11 09:43:27,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-11 09:43:27,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-11 09:43:27,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-11 09:43:27,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-11 09:43:27,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-11 09:43:27,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-11 09:43:28,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-11 09:43:28,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-11 09:43:28,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-11 09:43:28,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-11 09:43:28,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-11 09:43:28,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-11 09:43:28,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-11 09:43:28,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-11 09:43:28,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-11 09:43:28,007 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf [2021-06-11 09:43:28,039 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 09:43:28,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 09:43:28,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 09:43:28,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 09:43:28,042 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 09:43:28,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 09:43:28,042 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 09:43:28,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 09:43:28,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 09:43:28,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 09:43:28,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 09:43:28,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 09:43:28,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 09:43:28,044 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 09:43:28,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 09:43:28,044 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 09:43:28,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 09:43:28,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 09:43:28,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 09:43:28,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 09:43:28,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 09:43:28,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 09:43:28,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 09:43:28,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 09:43:28,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 09:43:28,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 09:43:28,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 09:43:28,046 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 09:43:28,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-11 09:43:28,046 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 09:43:28,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 09:43:28,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 09:43:28,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 09:43:28,369 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-11 09:43:28,370 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-11 09:43:28,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl [2021-06-11 09:43:28,371 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl' [2021-06-11 09:43:28,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 09:43:28,415 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-11 09:43:28,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 09:43:28,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 09:43:28,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 09:43:28,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:43:28" (1/1) ... [2021-06-11 09:43:28,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:43:28" (1/1) ... [2021-06-11 09:43:28,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 09:43:28,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 09:43:28,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 09:43:28,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 09:43:28,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:43:28" (1/1) ... [2021-06-11 09:43:28,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:43:28" (1/1) ... [2021-06-11 09:43:28,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:43:28" (1/1) ... [2021-06-11 09:43:28,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:43:28" (1/1) ... [2021-06-11 09:43:28,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:43:28" (1/1) ... [2021-06-11 09:43:28,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:43:28" (1/1) ... [2021-06-11 09:43:28,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:43:28" (1/1) ... [2021-06-11 09:43:28,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 09:43:28,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 09:43:28,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 09:43:28,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 09:43:28,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:43:28" (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 09:43:28,562 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-06-11 09:43:28,562 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-06-11 09:43:28,563 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-06-11 09:43:28,564 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-06-11 09:43:28,564 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-06-11 09:43:28,564 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-06-11 09:43:28,564 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-06-11 09:43:28,564 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-06-11 09:43:28,564 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-06-11 09:43:28,564 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-06-11 09:43:28,565 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-06-11 09:43:28,565 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-06-11 09:43:28,565 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-06-11 09:43:28,565 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-06-11 09:43:28,565 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-06-11 09:43:28,565 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-11 09:43:28,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 09:43:28,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 09:43:28,566 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-06-11 09:43:28,566 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-06-11 09:43:28,566 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-06-11 09:43:28,566 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-06-11 09:43:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-06-11 09:43:28,567 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-06-11 09:43:28,567 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-06-11 09:43:28,568 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-06-11 09:43:28,568 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-06-11 09:43:28,569 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-06-11 09:43:28,569 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-06-11 09:43:28,569 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-06-11 09:43:28,570 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 09:43:28,751 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 09:43:28,751 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-11 09:43:28,753 INFO L202 PluginConnector]: Adding new model example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 09:43:28 BoogieIcfgContainer [2021-06-11 09:43:28,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 09:43:28,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 09:43:28,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 09:43:28,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 09:43:28,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:43:28" (1/2) ... [2021-06-11 09:43:28,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4dd788 and model type example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 09:43:28, skipping insertion in model container [2021-06-11 09:43:28,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 09:43:28" (2/2) ... [2021-06-11 09:43:28,768 INFO L111 eAbstractionObserver]: Analyzing ICFG example_9.bpl [2021-06-11 09:43:28,772 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 09:43:28,775 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-11 09:43:28,776 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 09:43:28,927 INFO L149 ThreadInstanceAdder]: Constructed 81 joinOtherThreadTransitions. [2021-06-11 09:43:28,944 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-06-11 09:43:28,962 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:43:28,962 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:43:28,962 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:43:28,962 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:43:28,962 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:43:28,962 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:43:28,962 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:43:28,962 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:43:28,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 76 places, 120 transitions, 528 flow [2021-06-11 09:43:29,283 INFO L129 PetriNetUnfolder]: 1793/2334 cut-off events. [2021-06-11 09:43:29,284 INFO L130 PetriNetUnfolder]: For 2304/2304 co-relation queries the response was YES. [2021-06-11 09:43:29,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4666 conditions, 2334 events. 1793/2334 cut-off events. For 2304/2304 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8920 event pairs, 0 based on Foata normal form. 0/2333 useless extension candidates. Maximal degree in co-relation 2090. Up to 630 conditions per place. [2021-06-11 09:43:29,296 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 120 transitions, 528 flow [2021-06-11 09:43:29,324 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 109 transitions, 488 flow [2021-06-11 09:43:29,325 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:43:29,337 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 109 transitions, 488 flow [2021-06-11 09:43:29,341 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 109 transitions, 488 flow [2021-06-11 09:43:29,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 109 transitions, 488 flow [2021-06-11 09:43:29,536 INFO L129 PetriNetUnfolder]: 1793/2332 cut-off events. [2021-06-11 09:43:29,536 INFO L130 PetriNetUnfolder]: For 2304/2304 co-relation queries the response was YES. [2021-06-11 09:43:29,544 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4664 conditions, 2332 events. 1793/2332 cut-off events. For 2304/2304 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8412 event pairs, 0 based on Foata normal form. 0/2332 useless extension candidates. Maximal degree in co-relation 2090. Up to 630 conditions per place. [2021-06-11 09:43:29,582 INFO L151 LiptonReduction]: Number of co-enabled transitions 2736 [2021-06-11 09:43:29,761 INFO L163 LiptonReduction]: Checked pairs total: 756 [2021-06-11 09:43:29,761 INFO L165 LiptonReduction]: Total number of compositions: 9 [2021-06-11 09:43:29,764 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 440 [2021-06-11 09:43:29,915 INFO L129 PetriNetUnfolder]: 1793/2322 cut-off events. [2021-06-11 09:43:29,916 INFO L130 PetriNetUnfolder]: For 2304/2304 co-relation queries the response was YES. [2021-06-11 09:43:29,916 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:43:29,916 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] [2021-06-11 09:43:29,917 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 09:43:29,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:43:29,923 INFO L82 PathProgramCache]: Analyzing trace with hash -368766337, now seen corresponding path program 1 times [2021-06-11 09:43:29,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:43:29,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231653512] [2021-06-11 09:43:29,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:43:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:43:30,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:30,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:43:30,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:30,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:43:30,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:30,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:43:30,098 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 09:43:30,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231653512] [2021-06-11 09:43:30,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:43:30,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:43:30,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550321728] [2021-06-11 09:43:30,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:43:30,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:43:30,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:43:30,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:43:30,128 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 129 [2021-06-11 09:43:30,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 100 transitions, 470 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 09:43:30,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:43:30,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 129 [2021-06-11 09:43:30,134 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:43:30,277 INFO L129 PetriNetUnfolder]: 1001/1368 cut-off events. [2021-06-11 09:43:30,277 INFO L130 PetriNetUnfolder]: For 2025/2025 co-relation queries the response was YES. [2021-06-11 09:43:30,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2840 conditions, 1368 events. 1001/1368 cut-off events. For 2025/2025 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5714 event pairs, 0 based on Foata normal form. 163/1531 useless extension candidates. Maximal degree in co-relation 2066. Up to 280 conditions per place. [2021-06-11 09:43:30,289 INFO L132 encePairwiseOnDemand]: 123/129 looper letters, 4 selfloop transitions, 1 changer transitions 0/95 dead transitions. [2021-06-11 09:43:30,289 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 95 transitions, 455 flow [2021-06-11 09:43:30,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:43:30,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:43:30,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2021-06-11 09:43:30,305 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9483204134366925 [2021-06-11 09:43:30,306 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2021-06-11 09:43:30,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2021-06-11 09:43:30,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:43:30,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2021-06-11 09:43:30,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 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 09:43:30,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 09:43:30,321 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 09:43:30,322 INFO L185 Difference]: Start difference. First operand has 56 places, 100 transitions, 470 flow. Second operand 3 states and 367 transitions. [2021-06-11 09:43:30,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 95 transitions, 455 flow [2021-06-11 09:43:30,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 95 transitions, 285 flow, removed 0 selfloop flow, removed 18 redundant places. [2021-06-11 09:43:30,343 INFO L241 Difference]: Finished difference. Result has 40 places, 95 transitions, 277 flow [2021-06-11 09:43:30,345 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=40, PETRI_TRANSITIONS=95} [2021-06-11 09:43:30,346 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, -16 predicate places. [2021-06-11 09:43:30,346 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:43:30,346 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 95 transitions, 277 flow [2021-06-11 09:43:30,348 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 95 transitions, 277 flow [2021-06-11 09:43:30,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 95 transitions, 277 flow [2021-06-11 09:43:30,412 INFO L129 PetriNetUnfolder]: 1001/1368 cut-off events. [2021-06-11 09:43:30,413 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:43:30,415 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1380 conditions, 1368 events. 1001/1368 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5238 event pairs, 0 based on Foata normal form. 0/1368 useless extension candidates. Maximal degree in co-relation 1365. Up to 280 conditions per place. [2021-06-11 09:43:30,444 INFO L151 LiptonReduction]: Number of co-enabled transitions 1216 [2021-06-11 09:43:30,459 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:43:30,460 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:43:30,460 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 114 [2021-06-11 09:43:30,462 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 95 transitions, 277 flow [2021-06-11 09:43:30,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 09:43:30,463 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:43:30,463 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] [2021-06-11 09:43:30,463 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 09:43:30,464 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 09:43:30,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:43:30,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1267996449, now seen corresponding path program 1 times [2021-06-11 09:43:30,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:43:30,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135635433] [2021-06-11 09:43:30,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:43:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:43:30,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:30,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:43:30,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:30,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:43:30,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:30,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:43:30,517 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 09:43:30,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135635433] [2021-06-11 09:43:30,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:43:30,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:43:30,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101056167] [2021-06-11 09:43:30,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:43:30,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:43:30,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:43:30,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:43:30,527 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 129 [2021-06-11 09:43:30,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 95 transitions, 277 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 09:43:30,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:43:30,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 129 [2021-06-11 09:43:30,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:43:30,617 INFO L129 PetriNetUnfolder]: 994/1360 cut-off events. [2021-06-11 09:43:30,618 INFO L130 PetriNetUnfolder]: For 157/157 co-relation queries the response was YES. [2021-06-11 09:43:30,620 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1530 conditions, 1360 events. 994/1360 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6102 event pairs, 0 based on Foata normal form. 1/1361 useless extension candidates. Maximal degree in co-relation 1513. Up to 280 conditions per place. [2021-06-11 09:43:30,627 INFO L132 encePairwiseOnDemand]: 127/129 looper letters, 8 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2021-06-11 09:43:30,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 94 transitions, 292 flow [2021-06-11 09:43:30,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:43:30,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:43:30,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2021-06-11 09:43:30,630 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9483204134366925 [2021-06-11 09:43:30,630 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2021-06-11 09:43:30,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2021-06-11 09:43:30,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:43:30,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2021-06-11 09:43:30,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 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 09:43:30,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 09:43:30,634 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 09:43:30,634 INFO L185 Difference]: Start difference. First operand has 40 places, 95 transitions, 277 flow. Second operand 3 states and 367 transitions. [2021-06-11 09:43:30,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 94 transitions, 292 flow [2021-06-11 09:43:30,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 94 transitions, 291 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:43:30,638 INFO L241 Difference]: Finished difference. Result has 41 places, 94 transitions, 275 flow [2021-06-11 09:43:30,638 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=41, PETRI_TRANSITIONS=94} [2021-06-11 09:43:30,639 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, -15 predicate places. [2021-06-11 09:43:30,639 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:43:30,639 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 94 transitions, 275 flow [2021-06-11 09:43:30,640 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 94 transitions, 275 flow [2021-06-11 09:43:30,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 94 transitions, 275 flow [2021-06-11 09:43:30,698 INFO L129 PetriNetUnfolder]: 994/1360 cut-off events. [2021-06-11 09:43:30,698 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:43:30,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 1360 events. 994/1360 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5156 event pairs, 0 based on Foata normal form. 0/1360 useless extension candidates. Maximal degree in co-relation 1366. Up to 280 conditions per place. [2021-06-11 09:43:30,711 INFO L151 LiptonReduction]: Number of co-enabled transitions 1200 [2021-06-11 09:43:30,725 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:43:30,725 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:43:30,725 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 86 [2021-06-11 09:43:30,726 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 94 transitions, 275 flow [2021-06-11 09:43:30,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 09:43:30,727 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:43:30,727 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] [2021-06-11 09:43:30,727 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-11 09:43:30,727 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 09:43:30,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:43:30,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1076204707, now seen corresponding path program 1 times [2021-06-11 09:43:30,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:43:30,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424334772] [2021-06-11 09:43:30,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:43:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:43:30,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:30,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:43:30,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:30,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:43:30,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:30,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:43:30,783 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 09:43:30,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424334772] [2021-06-11 09:43:30,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:43:30,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:43:30,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76570197] [2021-06-11 09:43:30,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:43:30,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:43:30,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:43:30,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:43:30,786 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 129 [2021-06-11 09:43:30,786 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 94 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 09:43:30,786 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:43:30,786 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 129 [2021-06-11 09:43:30,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:43:30,867 INFO L129 PetriNetUnfolder]: 946/1304 cut-off events. [2021-06-11 09:43:30,867 INFO L130 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2021-06-11 09:43:30,869 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 1304 events. 946/1304 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5805 event pairs, 0 based on Foata normal form. 7/1311 useless extension candidates. Maximal degree in co-relation 1460. Up to 280 conditions per place. [2021-06-11 09:43:30,875 INFO L132 encePairwiseOnDemand]: 126/129 looper letters, 7 selfloop transitions, 1 changer transitions 0/92 dead transitions. [2021-06-11 09:43:30,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 92 transitions, 285 flow [2021-06-11 09:43:30,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:43:30,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:43:30,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2021-06-11 09:43:30,877 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9483204134366925 [2021-06-11 09:43:30,878 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2021-06-11 09:43:30,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2021-06-11 09:43:30,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:43:30,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2021-06-11 09:43:30,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 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 09:43:30,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 09:43:30,880 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 09:43:30,880 INFO L185 Difference]: Start difference. First operand has 41 places, 94 transitions, 275 flow. Second operand 3 states and 367 transitions. [2021-06-11 09:43:30,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 92 transitions, 285 flow [2021-06-11 09:43:30,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 92 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:43:30,885 INFO L241 Difference]: Finished difference. Result has 42 places, 92 transitions, 270 flow [2021-06-11 09:43:30,885 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=42, PETRI_TRANSITIONS=92} [2021-06-11 09:43:30,885 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, -14 predicate places. [2021-06-11 09:43:30,886 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:43:30,886 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 92 transitions, 270 flow [2021-06-11 09:43:30,887 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 92 transitions, 270 flow [2021-06-11 09:43:30,887 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 92 transitions, 270 flow [2021-06-11 09:43:30,947 INFO L129 PetriNetUnfolder]: 946/1304 cut-off events. [2021-06-11 09:43:30,947 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:43:30,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1318 conditions, 1304 events. 946/1304 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5000 event pairs, 0 based on Foata normal form. 0/1304 useless extension candidates. Maximal degree in co-relation 1311. Up to 280 conditions per place. [2021-06-11 09:43:30,956 INFO L151 LiptonReduction]: Number of co-enabled transitions 1168 [2021-06-11 09:43:30,968 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:43:30,969 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:43:30,969 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 83 [2021-06-11 09:43:30,973 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 92 transitions, 270 flow [2021-06-11 09:43:30,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 09:43:30,973 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:43:30,973 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] [2021-06-11 09:43:30,974 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-11 09:43:30,974 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 09:43:30,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:43:30,974 INFO L82 PathProgramCache]: Analyzing trace with hash 323209673, now seen corresponding path program 1 times [2021-06-11 09:43:30,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:43:30,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419307684] [2021-06-11 09:43:30,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:43:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:43:31,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:31,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:43:31,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:31,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:43:31,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:31,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:43:31,011 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 09:43:31,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419307684] [2021-06-11 09:43:31,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:43:31,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:43:31,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411579980] [2021-06-11 09:43:31,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:43:31,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:43:31,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:43:31,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:43:31,014 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 129 [2021-06-11 09:43:31,014 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 92 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 09:43:31,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:43:31,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 129 [2021-06-11 09:43:31,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:43:31,058 INFO L129 PetriNetUnfolder]: 393/597 cut-off events. [2021-06-11 09:43:31,058 INFO L130 PetriNetUnfolder]: For 149/149 co-relation queries the response was YES. [2021-06-11 09:43:31,059 INFO L84 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 597 events. 393/597 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2501 event pairs, 0 based on Foata normal form. 112/709 useless extension candidates. Maximal degree in co-relation 642. Up to 140 conditions per place. [2021-06-11 09:43:31,062 INFO L132 encePairwiseOnDemand]: 122/129 looper letters, 3 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2021-06-11 09:43:31,062 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 86 transitions, 260 flow [2021-06-11 09:43:31,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:43:31,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:43:31,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2021-06-11 09:43:31,064 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9483204134366925 [2021-06-11 09:43:31,064 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2021-06-11 09:43:31,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2021-06-11 09:43:31,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:43:31,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2021-06-11 09:43:31,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 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 09:43:31,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 09:43:31,066 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 09:43:31,067 INFO L185 Difference]: Start difference. First operand has 42 places, 92 transitions, 270 flow. Second operand 3 states and 367 transitions. [2021-06-11 09:43:31,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 86 transitions, 260 flow [2021-06-11 09:43:31,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 86 transitions, 259 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:43:31,069 INFO L241 Difference]: Finished difference. Result has 43 places, 86 transitions, 253 flow [2021-06-11 09:43:31,070 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=43, PETRI_TRANSITIONS=86} [2021-06-11 09:43:31,070 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, -13 predicate places. [2021-06-11 09:43:31,070 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:43:31,070 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 86 transitions, 253 flow [2021-06-11 09:43:31,070 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 86 transitions, 253 flow [2021-06-11 09:43:31,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 86 transitions, 253 flow [2021-06-11 09:43:31,099 INFO L129 PetriNetUnfolder]: 393/597 cut-off events. [2021-06-11 09:43:31,099 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:43:31,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 597 events. 393/597 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2115 event pairs, 0 based on Foata normal form. 0/597 useless extension candidates. Maximal degree in co-relation 605. Up to 140 conditions per place. [2021-06-11 09:43:31,102 INFO L151 LiptonReduction]: Number of co-enabled transitions 1072 [2021-06-11 09:43:31,114 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:43:31,114 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:43:31,114 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 44 [2021-06-11 09:43:31,115 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 86 transitions, 253 flow [2021-06-11 09:43:31,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 09:43:31,116 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:43:31,116 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] [2021-06-11 09:43:31,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-11 09:43:31,116 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 09:43:31,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:43:31,117 INFO L82 PathProgramCache]: Analyzing trace with hash 878838051, now seen corresponding path program 1 times [2021-06-11 09:43:31,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:43:31,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736237703] [2021-06-11 09:43:31,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:43:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:43:31,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:31,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:43:31,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:31,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:43:31,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:31,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:43:31,148 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 09:43:31,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736237703] [2021-06-11 09:43:31,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:43:31,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:43:31,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739086614] [2021-06-11 09:43:31,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:43:31,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:43:31,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:43:31,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:43:31,153 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 129 [2021-06-11 09:43:31,153 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 86 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 09:43:31,153 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:43:31,153 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 129 [2021-06-11 09:43:31,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:43:31,190 INFO L129 PetriNetUnfolder]: 309/492 cut-off events. [2021-06-11 09:43:31,191 INFO L130 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2021-06-11 09:43:31,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 566 conditions, 492 events. 309/492 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2021 event pairs, 0 based on Foata normal form. 15/507 useless extension candidates. Maximal degree in co-relation 558. Up to 105 conditions per place. [2021-06-11 09:43:31,194 INFO L132 encePairwiseOnDemand]: 125/129 looper letters, 6 selfloop transitions, 1 changer transitions 0/83 dead transitions. [2021-06-11 09:43:31,197 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 83 transitions, 258 flow [2021-06-11 09:43:31,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:43:31,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:43:31,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2021-06-11 09:43:31,198 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9483204134366925 [2021-06-11 09:43:31,198 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2021-06-11 09:43:31,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2021-06-11 09:43:31,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:43:31,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2021-06-11 09:43:31,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 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 09:43:31,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 09:43:31,201 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 09:43:31,201 INFO L185 Difference]: Start difference. First operand has 43 places, 86 transitions, 253 flow. Second operand 3 states and 367 transitions. [2021-06-11 09:43:31,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 83 transitions, 258 flow [2021-06-11 09:43:31,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 83 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:43:31,206 INFO L241 Difference]: Finished difference. Result has 44 places, 83 transitions, 245 flow [2021-06-11 09:43:31,206 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=245, PETRI_PLACES=44, PETRI_TRANSITIONS=83} [2021-06-11 09:43:31,206 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, -12 predicate places. [2021-06-11 09:43:31,207 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:43:31,207 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 83 transitions, 245 flow [2021-06-11 09:43:31,207 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 83 transitions, 245 flow [2021-06-11 09:43:31,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 83 transitions, 245 flow [2021-06-11 09:43:31,233 INFO L129 PetriNetUnfolder]: 309/492 cut-off events. [2021-06-11 09:43:31,233 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:43:31,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 492 events. 309/492 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1776 event pairs, 0 based on Foata normal form. 0/492 useless extension candidates. Maximal degree in co-relation 501. Up to 105 conditions per place. [2021-06-11 09:43:31,237 INFO L151 LiptonReduction]: Number of co-enabled transitions 1024 [2021-06-11 09:43:31,255 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:43:31,255 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:43:31,256 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 49 [2021-06-11 09:43:31,259 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 83 transitions, 245 flow [2021-06-11 09:43:31,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 09:43:31,259 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:43:31,259 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] [2021-06-11 09:43:31,259 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-11 09:43:31,260 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 09:43:31,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:43:31,260 INFO L82 PathProgramCache]: Analyzing trace with hash -296795403, now seen corresponding path program 1 times [2021-06-11 09:43:31,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:43:31,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77747040] [2021-06-11 09:43:31,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:43:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:43:31,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:31,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:43:31,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:31,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:43:31,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:31,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:43:31,287 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 09:43:31,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77747040] [2021-06-11 09:43:31,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:43:31,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:43:31,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168806896] [2021-06-11 09:43:31,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:43:31,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:43:31,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:43:31,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:43:31,289 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 129 [2021-06-11 09:43:31,290 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 83 transitions, 245 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 09:43:31,290 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:43:31,290 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 129 [2021-06-11 09:43:31,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:43:31,314 INFO L129 PetriNetUnfolder]: 76/160 cut-off events. [2021-06-11 09:43:31,314 INFO L130 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2021-06-11 09:43:31,315 INFO L84 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 160 events. 76/160 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 486 event pairs, 0 based on Foata normal form. 48/208 useless extension candidates. Maximal degree in co-relation 179. Up to 30 conditions per place. [2021-06-11 09:43:31,323 INFO L132 encePairwiseOnDemand]: 121/129 looper letters, 2 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2021-06-11 09:43:31,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 76 transitions, 230 flow [2021-06-11 09:43:31,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:43:31,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:43:31,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2021-06-11 09:43:31,325 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9483204134366925 [2021-06-11 09:43:31,325 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2021-06-11 09:43:31,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2021-06-11 09:43:31,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:43:31,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2021-06-11 09:43:31,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 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 09:43:31,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 09:43:31,327 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 09:43:31,327 INFO L185 Difference]: Start difference. First operand has 44 places, 83 transitions, 245 flow. Second operand 3 states and 367 transitions. [2021-06-11 09:43:31,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 76 transitions, 230 flow [2021-06-11 09:43:31,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 76 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:43:31,330 INFO L241 Difference]: Finished difference. Result has 45 places, 76 transitions, 225 flow [2021-06-11 09:43:31,330 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=43, 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=225, PETRI_PLACES=45, PETRI_TRANSITIONS=76} [2021-06-11 09:43:31,330 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2021-06-11 09:43:31,330 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:43:31,330 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 76 transitions, 225 flow [2021-06-11 09:43:31,331 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 76 transitions, 225 flow [2021-06-11 09:43:31,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 76 transitions, 225 flow [2021-06-11 09:43:31,340 INFO L129 PetriNetUnfolder]: 76/160 cut-off events. [2021-06-11 09:43:31,341 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:43:31,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 160 events. 76/160 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 450 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 170. Up to 30 conditions per place. [2021-06-11 09:43:31,342 INFO L151 LiptonReduction]: Number of co-enabled transitions 656 [2021-06-11 09:43:31,346 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:43:31,347 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:43:31,347 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17 [2021-06-11 09:43:31,348 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 76 transitions, 225 flow [2021-06-11 09:43:31,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 09:43:31,349 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:43:31,349 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] [2021-06-11 09:43:31,349 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-11 09:43:31,349 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 09:43:31,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:43:31,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1151034427, now seen corresponding path program 1 times [2021-06-11 09:43:31,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:43:31,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813928412] [2021-06-11 09:43:31,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:43:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:43:31,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:31,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:43:31,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:31,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:43:31,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:31,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:43:31,377 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 09:43:31,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813928412] [2021-06-11 09:43:31,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:43:31,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:43:31,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20305742] [2021-06-11 09:43:31,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:43:31,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:43:31,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:43:31,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:43:31,379 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 129 [2021-06-11 09:43:31,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 76 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 09:43:31,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:43:31,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 129 [2021-06-11 09:43:31,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:43:31,393 INFO L129 PetriNetUnfolder]: 10/48 cut-off events. [2021-06-11 09:43:31,393 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2021-06-11 09:43:31,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 48 events. 10/48 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 64 event pairs, 0 based on Foata normal form. 18/66 useless extension candidates. Maximal degree in co-relation 60. Up to 8 conditions per place. [2021-06-11 09:43:31,393 INFO L132 encePairwiseOnDemand]: 120/129 looper letters, 1 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2021-06-11 09:43:31,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 42 transitions, 127 flow [2021-06-11 09:43:31,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:43:31,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:43:31,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2021-06-11 09:43:31,395 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9483204134366925 [2021-06-11 09:43:31,395 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2021-06-11 09:43:31,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2021-06-11 09:43:31,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:43:31,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2021-06-11 09:43:31,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 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 09:43:31,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 09:43:31,398 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 09:43:31,398 INFO L185 Difference]: Start difference. First operand has 45 places, 76 transitions, 225 flow. Second operand 3 states and 367 transitions. [2021-06-11 09:43:31,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 42 transitions, 127 flow [2021-06-11 09:43:31,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:43:31,399 INFO L241 Difference]: Finished difference. Result has 46 places, 42 transitions, 124 flow [2021-06-11 09:43:31,399 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2021-06-11 09:43:31,399 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, -10 predicate places. [2021-06-11 09:43:31,399 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:43:31,400 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 42 transitions, 124 flow [2021-06-11 09:43:31,400 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 42 transitions, 124 flow [2021-06-11 09:43:31,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 42 transitions, 124 flow [2021-06-11 09:43:31,404 INFO L129 PetriNetUnfolder]: 10/48 cut-off events. [2021-06-11 09:43:31,404 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:43:31,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 48 events. 10/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 59. Up to 8 conditions per place. [2021-06-11 09:43:31,405 INFO L151 LiptonReduction]: Number of co-enabled transitions 380 [2021-06-11 09:43:31,406 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:43:31,406 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:43:31,406 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-06-11 09:43:31,407 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 124 flow [2021-06-11 09:43:31,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 09:43:31,407 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:43:31,407 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] [2021-06-11 09:43:31,407 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-11 09:43:31,408 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 09:43:31,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:43:31,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1781566773, now seen corresponding path program 1 times [2021-06-11 09:43:31,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:43:31,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48620126] [2021-06-11 09:43:31,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:43:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:43:31,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:31,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:43:31,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:31,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:43:31,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:31,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 09:43:31,506 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 09:43:31,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 09:43:31,544 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-11 09:43:31,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-11 09:43:31,588 INFO L142 QuantifierPusher]: treesize reduction 9, result has 81.3 percent of original size [2021-06-11 09:43:31,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-11 09:43:31,643 INFO L142 QuantifierPusher]: treesize reduction 18, result has 72.3 percent of original size [2021-06-11 09:43:31,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 09:43:31,707 INFO L142 QuantifierPusher]: treesize reduction 36, result has 61.3 percent of original size [2021-06-11 09:43:31,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 09:43:31,829 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-11 09:43:31,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-11 09:43:31,886 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-11 09:43:31,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-11 09:43:31,930 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 09:43:31,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48620126] [2021-06-11 09:43:31,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:43:31,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-11 09:43:31,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580154367] [2021-06-11 09:43:31,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-11 09:43:31,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:43:31,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-11 09:43:31,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-11 09:43:31,933 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-06-11 09:43:31,934 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 124 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:43:31,935 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:43:31,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-06-11 09:43:31,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:43:32,364 INFO L129 PetriNetUnfolder]: 2489/3679 cut-off events. [2021-06-11 09:43:32,365 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:43:32,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6779 conditions, 3679 events. 2489/3679 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 19529 event pairs, 769 based on Foata normal form. 1/3495 useless extension candidates. Maximal degree in co-relation 6771. Up to 1153 conditions per place. [2021-06-11 09:43:32,397 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 44 selfloop transitions, 8 changer transitions 1/85 dead transitions. [2021-06-11 09:43:32,398 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 85 transitions, 316 flow [2021-06-11 09:43:32,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-11 09:43:32,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-11 09:43:32,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-11 09:43:32,402 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-06-11 09:43:32,402 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-11 09:43:32,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-11 09:43:32,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:43:32,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-11 09:43:32,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 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 09:43:32,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:43:32,410 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:43:32,410 INFO L185 Difference]: Start difference. First operand has 46 places, 42 transitions, 124 flow. Second operand 11 states and 1253 transitions. [2021-06-11 09:43:32,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 85 transitions, 316 flow [2021-06-11 09:43:32,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 85 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:43:32,413 INFO L241 Difference]: Finished difference. Result has 64 places, 49 transitions, 186 flow [2021-06-11 09:43:32,413 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=186, PETRI_PLACES=64, PETRI_TRANSITIONS=49} [2021-06-11 09:43:32,413 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2021-06-11 09:43:32,413 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:43:32,413 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 49 transitions, 186 flow [2021-06-11 09:43:32,414 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 49 transitions, 186 flow [2021-06-11 09:43:32,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 49 transitions, 186 flow [2021-06-11 09:43:32,429 INFO L129 PetriNetUnfolder]: 63/219 cut-off events. [2021-06-11 09:43:32,429 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-06-11 09:43:32,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 219 events. 63/219 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1054 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 276. Up to 51 conditions per place. [2021-06-11 09:43:32,431 INFO L151 LiptonReduction]: Number of co-enabled transitions 570 [2021-06-11 09:43:32,434 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:43:32,434 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:43:32,434 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 21 [2021-06-11 09:43:32,435 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 49 transitions, 186 flow [2021-06-11 09:43:32,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:43:32,435 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:43:32,435 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] [2021-06-11 09:43:32,436 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-11 09:43:32,436 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 09:43:32,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:43:32,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1214353307, now seen corresponding path program 2 times [2021-06-11 09:43:32,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:43:32,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878428945] [2021-06-11 09:43:32,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:43:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:43:32,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:32,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:43:32,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:32,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:43:32,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:32,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 09:43:32,532 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 09:43:32,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 09:43:32,551 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 09:43:32,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 09:43:32,573 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 09:43:32,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 09:43:32,611 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 09:43:32,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 09:43:32,650 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-11 09:43:32,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-11 09:43:32,693 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-06-11 09:43:32,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-06-11 09:43:32,761 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-11 09:43:32,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-11 09:43:32,808 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 09:43:32,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878428945] [2021-06-11 09:43:32,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:43:32,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-11 09:43:32,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201566672] [2021-06-11 09:43:32,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-11 09:43:32,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:43:32,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-11 09:43:32,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-11 09:43:32,812 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-06-11 09:43:32,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 49 transitions, 186 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:43:32,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:43:32,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-06-11 09:43:32,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:43:33,483 INFO L129 PetriNetUnfolder]: 3902/6999 cut-off events. [2021-06-11 09:43:33,483 INFO L130 PetriNetUnfolder]: For 5362/5416 co-relation queries the response was YES. [2021-06-11 09:43:33,518 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15574 conditions, 6999 events. 3902/6999 cut-off events. For 5362/5416 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 55119 event pairs, 963 based on Foata normal form. 1/6764 useless extension candidates. Maximal degree in co-relation 15557. Up to 1551 conditions per place. [2021-06-11 09:43:33,553 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 68 selfloop transitions, 15 changer transitions 1/116 dead transitions. [2021-06-11 09:43:33,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 116 transitions, 678 flow [2021-06-11 09:43:33,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-11 09:43:33,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-11 09:43:33,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-11 09:43:33,556 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-06-11 09:43:33,556 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-11 09:43:33,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-11 09:43:33,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:43:33,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-11 09:43:33,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 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 09:43:33,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:43:33,562 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:43:33,562 INFO L185 Difference]: Start difference. First operand has 63 places, 49 transitions, 186 flow. Second operand 11 states and 1253 transitions. [2021-06-11 09:43:33,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 116 transitions, 678 flow [2021-06-11 09:43:33,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 116 transitions, 653 flow, removed 8 selfloop flow, removed 2 redundant places. [2021-06-11 09:43:33,570 INFO L241 Difference]: Finished difference. Result has 80 places, 63 transitions, 340 flow [2021-06-11 09:43:33,571 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=340, PETRI_PLACES=80, PETRI_TRANSITIONS=63} [2021-06-11 09:43:33,571 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 24 predicate places. [2021-06-11 09:43:33,571 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:43:33,571 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 63 transitions, 340 flow [2021-06-11 09:43:33,571 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 63 transitions, 340 flow [2021-06-11 09:43:33,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 63 transitions, 340 flow [2021-06-11 09:43:33,622 INFO L129 PetriNetUnfolder]: 197/687 cut-off events. [2021-06-11 09:43:33,622 INFO L130 PetriNetUnfolder]: For 164/185 co-relation queries the response was YES. [2021-06-11 09:43:33,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 687 events. 197/687 cut-off events. For 164/185 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5254 event pairs, 0 based on Foata normal form. 0/602 useless extension candidates. Maximal degree in co-relation 904. Up to 163 conditions per place. [2021-06-11 09:43:33,630 INFO L151 LiptonReduction]: Number of co-enabled transitions 982 [2021-06-11 09:43:33,632 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:43:33,633 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:43:33,633 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 62 [2021-06-11 09:43:33,633 INFO L480 AbstractCegarLoop]: Abstraction has has 80 places, 63 transitions, 340 flow [2021-06-11 09:43:33,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:43:33,634 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:43:33,635 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] [2021-06-11 09:43:33,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-11 09:43:33,635 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 09:43:33,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:43:33,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1481638487, now seen corresponding path program 3 times [2021-06-11 09:43:33,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:43:33,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304615950] [2021-06-11 09:43:33,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:43:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:43:33,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:33,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:43:33,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:33,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:43:33,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:33,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 09:43:33,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:33,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 09:43:33,706 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 09:43:33,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 09:43:33,723 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 09:43:33,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 09:43:33,748 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 09:43:33,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 09:43:33,782 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-06-11 09:43:33,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-11 09:43:33,829 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-11 09:43:33,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-11 09:43:33,881 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-11 09:43:33,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-11 09:43:33,925 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 09:43:33,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304615950] [2021-06-11 09:43:33,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:43:33,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-11 09:43:33,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145444923] [2021-06-11 09:43:33,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-11 09:43:33,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:43:33,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-11 09:43:33,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-11 09:43:33,930 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-06-11 09:43:33,931 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 63 transitions, 340 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:43:33,931 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:43:33,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-06-11 09:43:33,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:43:34,685 INFO L129 PetriNetUnfolder]: 4028/7108 cut-off events. [2021-06-11 09:43:34,685 INFO L130 PetriNetUnfolder]: For 15658/16241 co-relation queries the response was YES. [2021-06-11 09:43:34,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21517 conditions, 7108 events. 4028/7108 cut-off events. For 15658/16241 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 53919 event pairs, 970 based on Foata normal form. 1/6852 useless extension candidates. Maximal degree in co-relation 21492. Up to 1968 conditions per place. [2021-06-11 09:43:34,768 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 72 selfloop transitions, 19 changer transitions 0/123 dead transitions. [2021-06-11 09:43:34,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 123 transitions, 910 flow [2021-06-11 09:43:34,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-11 09:43:34,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-11 09:43:34,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-11 09:43:34,772 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-06-11 09:43:34,772 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-11 09:43:34,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-11 09:43:34,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:43:34,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-11 09:43:34,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 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 09:43:34,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:43:34,777 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:43:34,777 INFO L185 Difference]: Start difference. First operand has 80 places, 63 transitions, 340 flow. Second operand 11 states and 1253 transitions. [2021-06-11 09:43:34,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 123 transitions, 910 flow [2021-06-11 09:43:34,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 123 transitions, 893 flow, removed 4 selfloop flow, removed 1 redundant places. [2021-06-11 09:43:34,813 INFO L241 Difference]: Finished difference. Result has 98 places, 77 transitions, 533 flow [2021-06-11 09:43:34,814 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=533, PETRI_PLACES=98, PETRI_TRANSITIONS=77} [2021-06-11 09:43:34,814 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 42 predicate places. [2021-06-11 09:43:34,814 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:43:34,814 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 77 transitions, 533 flow [2021-06-11 09:43:34,814 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 77 transitions, 533 flow [2021-06-11 09:43:34,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 77 transitions, 533 flow [2021-06-11 09:43:34,887 INFO L129 PetriNetUnfolder]: 309/1030 cut-off events. [2021-06-11 09:43:34,887 INFO L130 PetriNetUnfolder]: For 467/508 co-relation queries the response was YES. [2021-06-11 09:43:34,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1493 conditions, 1030 events. 309/1030 cut-off events. For 467/508 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8659 event pairs, 0 based on Foata normal form. 0/903 useless extension candidates. Maximal degree in co-relation 1460. Up to 255 conditions per place. [2021-06-11 09:43:34,901 INFO L151 LiptonReduction]: Number of co-enabled transitions 1354 [2021-06-11 09:43:34,905 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:43:34,905 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:43:34,905 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 91 [2021-06-11 09:43:34,907 INFO L480 AbstractCegarLoop]: Abstraction has has 98 places, 77 transitions, 533 flow [2021-06-11 09:43:34,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:43:34,908 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:43:34,908 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] [2021-06-11 09:43:34,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-11 09:43:34,908 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 09:43:34,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:43:34,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1170408855, now seen corresponding path program 4 times [2021-06-11 09:43:34,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:43:34,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208062529] [2021-06-11 09:43:34,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:43:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:43:34,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:34,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:43:34,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:34,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:43:34,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:34,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 09:43:35,002 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 09:43:35,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 09:43:35,015 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 09:43:35,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 09:43:35,033 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 09:43:35,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 09:43:35,055 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 09:43:35,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 09:43:35,088 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-11 09:43:35,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-11 09:43:35,121 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-06-11 09:43:35,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-06-11 09:43:35,170 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-11 09:43:35,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-11 09:43:35,209 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 09:43:35,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208062529] [2021-06-11 09:43:35,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:43:35,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-11 09:43:35,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384891488] [2021-06-11 09:43:35,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-11 09:43:35,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:43:35,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-11 09:43:35,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-11 09:43:35,212 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-06-11 09:43:35,213 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 77 transitions, 533 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:43:35,213 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:43:35,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-06-11 09:43:35,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:43:36,474 INFO L129 PetriNetUnfolder]: 6191/12223 cut-off events. [2021-06-11 09:43:36,474 INFO L130 PetriNetUnfolder]: For 42213/43203 co-relation queries the response was YES. [2021-06-11 09:43:36,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38593 conditions, 12223 events. 6191/12223 cut-off events. For 42213/43203 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 116549 event pairs, 1221 based on Foata normal form. 3/11749 useless extension candidates. Maximal degree in co-relation 38559. Up to 2507 conditions per place. [2021-06-11 09:43:36,875 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 95 selfloop transitions, 38 changer transitions 0/165 dead transitions. [2021-06-11 09:43:36,876 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 165 transitions, 1599 flow [2021-06-11 09:43:36,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-11 09:43:36,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-11 09:43:36,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-11 09:43:36,879 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-06-11 09:43:36,879 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-11 09:43:36,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-11 09:43:36,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:43:36,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-11 09:43:36,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 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 09:43:36,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:43:36,884 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:43:36,884 INFO L185 Difference]: Start difference. First operand has 98 places, 77 transitions, 533 flow. Second operand 11 states and 1253 transitions. [2021-06-11 09:43:36,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 165 transitions, 1599 flow [2021-06-11 09:43:36,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 165 transitions, 1509 flow, removed 36 selfloop flow, removed 1 redundant places. [2021-06-11 09:43:36,960 INFO L241 Difference]: Finished difference. Result has 116 places, 103 transitions, 935 flow [2021-06-11 09:43:36,960 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=935, PETRI_PLACES=116, PETRI_TRANSITIONS=103} [2021-06-11 09:43:36,960 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 60 predicate places. [2021-06-11 09:43:36,961 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:43:36,961 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 103 transitions, 935 flow [2021-06-11 09:43:36,961 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 103 transitions, 935 flow [2021-06-11 09:43:36,962 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 103 transitions, 935 flow [2021-06-11 09:43:37,273 INFO L129 PetriNetUnfolder]: 673/2204 cut-off events. [2021-06-11 09:43:37,273 INFO L130 PetriNetUnfolder]: For 1922/2043 co-relation queries the response was YES. [2021-06-11 09:43:37,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3487 conditions, 2204 events. 673/2204 cut-off events. For 1922/2043 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 21967 event pairs, 0 based on Foata normal form. 2/1939 useless extension candidates. Maximal degree in co-relation 3445. Up to 558 conditions per place. [2021-06-11 09:43:37,303 INFO L151 LiptonReduction]: Number of co-enabled transitions 2038 [2021-06-11 09:43:37,310 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:43:37,310 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:43:37,310 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 349 [2021-06-11 09:43:37,310 INFO L480 AbstractCegarLoop]: Abstraction has has 116 places, 103 transitions, 935 flow [2021-06-11 09:43:37,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:43:37,311 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:43:37,311 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] [2021-06-11 09:43:37,311 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-11 09:43:37,311 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 09:43:37,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:43:37,312 INFO L82 PathProgramCache]: Analyzing trace with hash -23664305, now seen corresponding path program 5 times [2021-06-11 09:43:37,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:43:37,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067309052] [2021-06-11 09:43:37,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:43:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:43:37,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:37,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:43:37,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:37,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:43:37,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:37,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 09:43:37,403 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 09:43:37,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 09:43:37,417 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 09:43:37,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 09:43:37,437 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 09:43:37,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 09:43:37,465 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 09:43:37,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 09:43:37,500 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-06-11 09:43:37,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-06-11 09:43:37,571 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-11 09:43:37,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-11 09:43:37,623 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-11 09:43:37,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-11 09:43:37,666 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 09:43:37,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067309052] [2021-06-11 09:43:37,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:43:37,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-11 09:43:37,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572001937] [2021-06-11 09:43:37,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-11 09:43:37,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:43:37,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-11 09:43:37,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-11 09:43:37,672 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-06-11 09:43:37,673 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 103 transitions, 935 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:43:37,673 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:43:37,673 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-06-11 09:43:37,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:43:39,762 INFO L129 PetriNetUnfolder]: 8395/16987 cut-off events. [2021-06-11 09:43:39,763 INFO L130 PetriNetUnfolder]: For 89519/91211 co-relation queries the response was YES. [2021-06-11 09:43:39,874 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61448 conditions, 16987 events. 8395/16987 cut-off events. For 89519/91211 co-relation queries the response was YES. Maximal size of possible extension queue 1519. Compared 174010 event pairs, 1388 based on Foata normal form. 3/16377 useless extension candidates. Maximal degree in co-relation 61405. Up to 3271 conditions per place. [2021-06-11 09:43:40,055 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 95 selfloop transitions, 61 changer transitions 0/188 dead transitions. [2021-06-11 09:43:40,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 188 transitions, 2189 flow [2021-06-11 09:43:40,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-11 09:43:40,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-11 09:43:40,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-11 09:43:40,059 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-06-11 09:43:40,059 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-11 09:43:40,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-11 09:43:40,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:43:40,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-11 09:43:40,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 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 09:43:40,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:43:40,064 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:43:40,065 INFO L185 Difference]: Start difference. First operand has 116 places, 103 transitions, 935 flow. Second operand 11 states and 1253 transitions. [2021-06-11 09:43:40,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 188 transitions, 2189 flow [2021-06-11 09:43:40,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 188 transitions, 2115 flow, removed 25 selfloop flow, removed 1 redundant places. [2021-06-11 09:43:40,348 INFO L241 Difference]: Finished difference. Result has 134 places, 129 transitions, 1489 flow [2021-06-11 09:43:40,348 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1489, PETRI_PLACES=134, PETRI_TRANSITIONS=129} [2021-06-11 09:43:40,348 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2021-06-11 09:43:40,349 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:43:40,349 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 129 transitions, 1489 flow [2021-06-11 09:43:40,349 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 129 transitions, 1489 flow [2021-06-11 09:43:40,350 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 134 places, 129 transitions, 1489 flow [2021-06-11 09:43:40,705 INFO L129 PetriNetUnfolder]: 1189/3815 cut-off events. [2021-06-11 09:43:40,705 INFO L130 PetriNetUnfolder]: For 5532/5801 co-relation queries the response was YES. [2021-06-11 09:43:40,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6611 conditions, 3815 events. 1189/3815 cut-off events. For 5532/5801 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 42025 event pairs, 0 based on Foata normal form. 10/3364 useless extension candidates. Maximal degree in co-relation 6560. Up to 989 conditions per place. [2021-06-11 09:43:40,748 INFO L151 LiptonReduction]: Number of co-enabled transitions 2716 [2021-06-11 09:43:40,757 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:43:40,758 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:43:40,758 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 409 [2021-06-11 09:43:40,758 INFO L480 AbstractCegarLoop]: Abstraction has has 134 places, 129 transitions, 1489 flow [2021-06-11 09:43:40,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:43:40,759 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:43:40,759 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] [2021-06-11 09:43:40,759 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-11 09:43:40,759 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 09:43:40,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:43:40,760 INFO L82 PathProgramCache]: Analyzing trace with hash 338622035, now seen corresponding path program 6 times [2021-06-11 09:43:40,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:43:40,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56709742] [2021-06-11 09:43:40,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:43:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:43:40,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:40,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:43:40,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:40,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:43:40,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:40,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 09:43:40,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:40,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 09:43:40,815 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 09:43:40,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 09:43:40,832 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 09:43:40,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 09:43:40,855 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 09:43:40,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 09:43:40,890 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-11 09:43:40,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-11 09:43:40,932 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-06-11 09:43:40,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-06-11 09:43:40,982 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-11 09:43:40,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-11 09:43:41,029 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 09:43:41,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56709742] [2021-06-11 09:43:41,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:43:41,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-11 09:43:41,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462143316] [2021-06-11 09:43:41,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-11 09:43:41,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:43:41,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-11 09:43:41,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-11 09:43:41,032 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-06-11 09:43:41,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 129 transitions, 1489 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:43:41,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:43:41,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-06-11 09:43:41,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:43:44,432 INFO L129 PetriNetUnfolder]: 12630/27067 cut-off events. [2021-06-11 09:43:44,433 INFO L130 PetriNetUnfolder]: For 171427/173347 co-relation queries the response was YES. [2021-06-11 09:43:44,716 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97903 conditions, 27067 events. 12630/27067 cut-off events. For 171427/173347 co-relation queries the response was YES. Maximal size of possible extension queue 2754. Compared 313330 event pairs, 2625 based on Foata normal form. 2/25710 useless extension candidates. Maximal degree in co-relation 97851. Up to 4942 conditions per place. [2021-06-11 09:43:44,873 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 238 selfloop transitions, 56 changer transitions 0/326 dead transitions. [2021-06-11 09:43:44,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 326 transitions, 4833 flow [2021-06-11 09:43:44,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-11 09:43:44,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-11 09:43:44,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-11 09:43:44,877 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-06-11 09:43:44,877 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-11 09:43:44,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-11 09:43:44,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:43:44,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-11 09:43:44,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 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 09:43:44,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:43:44,884 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:43:44,884 INFO L185 Difference]: Start difference. First operand has 134 places, 129 transitions, 1489 flow. Second operand 11 states and 1253 transitions. [2021-06-11 09:43:44,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 326 transitions, 4833 flow [2021-06-11 09:43:45,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 326 transitions, 4667 flow, removed 73 selfloop flow, removed 1 redundant places. [2021-06-11 09:43:45,529 INFO L241 Difference]: Finished difference. Result has 152 places, 172 transitions, 2328 flow [2021-06-11 09:43:45,530 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=1429, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2328, PETRI_PLACES=152, PETRI_TRANSITIONS=172} [2021-06-11 09:43:45,530 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 96 predicate places. [2021-06-11 09:43:45,530 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:43:45,530 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 172 transitions, 2328 flow [2021-06-11 09:43:45,531 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 172 transitions, 2328 flow [2021-06-11 09:43:45,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 152 places, 172 transitions, 2328 flow [2021-06-11 09:43:46,320 INFO L129 PetriNetUnfolder]: 2291/7581 cut-off events. [2021-06-11 09:43:46,321 INFO L130 PetriNetUnfolder]: For 16250/16785 co-relation queries the response was YES. [2021-06-11 09:43:46,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14108 conditions, 7581 events. 2291/7581 cut-off events. For 16250/16785 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 95407 event pairs, 0 based on Foata normal form. 22/6710 useless extension candidates. Maximal degree in co-relation 14048. Up to 1980 conditions per place. [2021-06-11 09:43:46,478 INFO L151 LiptonReduction]: Number of co-enabled transitions 3642 [2021-06-11 09:43:46,491 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:43:46,491 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:43:46,491 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 961 [2021-06-11 09:43:46,492 INFO L480 AbstractCegarLoop]: Abstraction has has 152 places, 172 transitions, 2328 flow [2021-06-11 09:43:46,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:43:46,492 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:43:46,493 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] [2021-06-11 09:43:46,493 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-11 09:43:46,493 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 09:43:46,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:43:46,493 INFO L82 PathProgramCache]: Analyzing trace with hash 715675419, now seen corresponding path program 1 times [2021-06-11 09:43:46,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:43:46,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740532714] [2021-06-11 09:43:46,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:43:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:43:46,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:46,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:43:46,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:46,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:43:46,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:46,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:43:46,573 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 09:43:46,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740532714] [2021-06-11 09:43:46,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:43:46,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:43:46,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451510404] [2021-06-11 09:43:46,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:43:46,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:43:46,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:43:46,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:43:46,575 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 129 [2021-06-11 09:43:46,575 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 172 transitions, 2328 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 09:43:46,575 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:43:46,575 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 129 [2021-06-11 09:43:46,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:43:47,018 INFO L129 PetriNetUnfolder]: 0/3267 cut-off events. [2021-06-11 09:43:47,018 INFO L130 PetriNetUnfolder]: For 17139/17678 co-relation queries the response was YES. [2021-06-11 09:43:47,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10063 conditions, 3267 events. 0/3267 cut-off events. For 17139/17678 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 49452 event pairs, 0 based on Foata normal form. 623/3505 useless extension candidates. Maximal degree in co-relation 0. Up to 326 conditions per place. [2021-06-11 09:43:47,023 INFO L132 encePairwiseOnDemand]: 124/129 looper letters, 1 selfloop transitions, 1 changer transitions 8/158 dead transitions. [2021-06-11 09:43:47,023 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 158 transitions, 2290 flow [2021-06-11 09:43:47,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:43:47,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:43:47,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2021-06-11 09:43:47,024 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.937984496124031 [2021-06-11 09:43:47,025 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2021-06-11 09:43:47,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2021-06-11 09:43:47,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:43:47,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2021-06-11 09:43:47,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 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 09:43:47,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 09:43:47,027 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 09:43:47,027 INFO L185 Difference]: Start difference. First operand has 152 places, 172 transitions, 2328 flow. Second operand 3 states and 363 transitions. [2021-06-11 09:43:47,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 158 transitions, 2290 flow [2021-06-11 09:43:47,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 158 transitions, 2201 flow, removed 38 selfloop flow, removed 1 redundant places. [2021-06-11 09:43:47,094 INFO L241 Difference]: Finished difference. Result has 153 places, 150 transitions, 2107 flow [2021-06-11 09:43:47,095 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2107, PETRI_PLACES=153, PETRI_TRANSITIONS=150} [2021-06-11 09:43:47,095 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 97 predicate places. [2021-06-11 09:43:47,095 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:43:47,095 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 150 transitions, 2107 flow [2021-06-11 09:43:47,095 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 150 transitions, 2107 flow [2021-06-11 09:43:47,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 148 places, 150 transitions, 2107 flow [2021-06-11 09:43:47,525 INFO L129 PetriNetUnfolder]: 0/3244 cut-off events. [2021-06-11 09:43:47,525 INFO L130 PetriNetUnfolder]: For 14614/15138 co-relation queries the response was YES. [2021-06-11 09:43:47,525 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9487 conditions, 3244 events. 0/3244 cut-off events. For 14614/15138 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 49132 event pairs, 0 based on Foata normal form. 21/2895 useless extension candidates. Maximal degree in co-relation 0. Up to 322 conditions per place. [2021-06-11 09:43:47,552 INFO L151 LiptonReduction]: Number of co-enabled transitions 1560 [2021-06-11 09:43:47,560 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:43:47,560 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:43:47,561 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 466 [2021-06-11 09:43:47,561 INFO L480 AbstractCegarLoop]: Abstraction has has 148 places, 150 transitions, 2107 flow [2021-06-11 09:43:47,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 09:43:47,561 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:43:47,561 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] [2021-06-11 09:43:47,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-11 09:43:47,562 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 09:43:47,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:43:47,562 INFO L82 PathProgramCache]: Analyzing trace with hash 247179585, now seen corresponding path program 7 times [2021-06-11 09:43:47,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:43:47,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214426784] [2021-06-11 09:43:47,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:43:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:43:47,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:47,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:43:47,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:47,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:43:47,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:47,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 09:43:47,623 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 09:43:47,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 09:43:47,636 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 09:43:47,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 09:43:47,654 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 09:43:47,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 09:43:47,678 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 09:43:47,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 09:43:47,709 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-06-11 09:43:47,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-11 09:43:47,745 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-06-11 09:43:47,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-06-11 09:43:47,798 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-11 09:43:47,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-11 09:43:47,845 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 09:43:47,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214426784] [2021-06-11 09:43:47,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:43:47,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-11 09:43:47,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067763368] [2021-06-11 09:43:47,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-11 09:43:47,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:43:47,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-11 09:43:47,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-11 09:43:47,847 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-06-11 09:43:47,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 150 transitions, 2107 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:43:47,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:43:47,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-06-11 09:43:47,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:43:51,245 INFO L129 PetriNetUnfolder]: 7678/19844 cut-off events. [2021-06-11 09:43:51,246 INFO L130 PetriNetUnfolder]: For 213944/216577 co-relation queries the response was YES. [2021-06-11 09:43:51,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104451 conditions, 19844 events. 7678/19844 cut-off events. For 213944/216577 co-relation queries the response was YES. Maximal size of possible extension queue 2088. Compared 243565 event pairs, 2748 based on Foata normal form. 4/19491 useless extension candidates. Maximal degree in co-relation 104390. Up to 6897 conditions per place. [2021-06-11 09:43:51,477 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 170 selfloop transitions, 63 changer transitions 1/252 dead transitions. [2021-06-11 09:43:51,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 252 transitions, 3839 flow [2021-06-11 09:43:51,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-11 09:43:51,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-11 09:43:51,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-11 09:43:51,480 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-06-11 09:43:51,480 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-11 09:43:51,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-11 09:43:51,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:43:51,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-11 09:43:51,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 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 09:43:51,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:43:51,486 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:43:51,486 INFO L185 Difference]: Start difference. First operand has 148 places, 150 transitions, 2107 flow. Second operand 11 states and 1253 transitions. [2021-06-11 09:43:51,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 252 transitions, 3839 flow [2021-06-11 09:43:52,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 252 transitions, 3701 flow, removed 67 selfloop flow, removed 9 redundant places. [2021-06-11 09:43:52,201 INFO L241 Difference]: Finished difference. Result has 158 places, 182 transitions, 2775 flow [2021-06-11 09:43:52,201 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=2087, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2775, PETRI_PLACES=158, PETRI_TRANSITIONS=182} [2021-06-11 09:43:52,201 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 102 predicate places. [2021-06-11 09:43:52,201 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:43:52,201 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 182 transitions, 2775 flow [2021-06-11 09:43:52,202 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 182 transitions, 2775 flow [2021-06-11 09:43:52,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 157 places, 182 transitions, 2775 flow [2021-06-11 09:43:52,830 INFO L129 PetriNetUnfolder]: 0/4423 cut-off events. [2021-06-11 09:43:52,831 INFO L130 PetriNetUnfolder]: For 19328/20165 co-relation queries the response was YES. [2021-06-11 09:43:52,831 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11703 conditions, 4423 events. 0/4423 cut-off events. For 19328/20165 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 71266 event pairs, 0 based on Foata normal form. 25/3932 useless extension candidates. Maximal degree in co-relation 0. Up to 433 conditions per place. [2021-06-11 09:43:52,865 INFO L151 LiptonReduction]: Number of co-enabled transitions 1924 [2021-06-11 09:43:52,874 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:43:52,874 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:43:52,874 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 673 [2021-06-11 09:43:52,879 INFO L480 AbstractCegarLoop]: Abstraction has has 157 places, 182 transitions, 2775 flow [2021-06-11 09:43:52,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:43:52,885 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:43:52,886 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] [2021-06-11 09:43:52,886 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-11 09:43:52,886 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 09:43:52,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:43:52,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1738243283, now seen corresponding path program 8 times [2021-06-11 09:43:52,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:43:52,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195376653] [2021-06-11 09:43:52,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:43:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:43:52,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:52,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:43:52,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:52,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:43:52,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:43:52,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 09:43:52,969 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 09:43:52,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 09:43:52,990 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-11 09:43:52,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-11 09:43:53,009 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-11 09:43:53,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-11 09:43:53,036 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 09:43:53,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 09:43:53,066 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-11 09:43:53,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-11 09:43:53,106 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-06-11 09:43:53,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-06-11 09:43:53,164 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-11 09:43:53,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-11 09:43:53,215 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 09:43:53,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195376653] [2021-06-11 09:43:53,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:43:53,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-11 09:43:53,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760403600] [2021-06-11 09:43:53,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-11 09:43:53,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:43:53,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-11 09:43:53,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-11 09:43:53,226 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-06-11 09:43:53,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 182 transitions, 2775 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:43:53,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:43:53,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-06-11 09:43:53,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:43:58,341 INFO L129 PetriNetUnfolder]: 9339/29663 cut-off events. [2021-06-11 09:43:58,341 INFO L130 PetriNetUnfolder]: For 355660/358377 co-relation queries the response was YES. [2021-06-11 09:43:58,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 150418 conditions, 29663 events. 9339/29663 cut-off events. For 355660/358377 co-relation queries the response was YES. Maximal size of possible extension queue 3042. Compared 437550 event pairs, 2961 based on Foata normal form. 6/28546 useless extension candidates. Maximal degree in co-relation 150356. Up to 7664 conditions per place. [2021-06-11 09:43:58,762 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 257 selfloop transitions, 123 changer transitions 2/400 dead transitions. [2021-06-11 09:43:58,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 400 transitions, 7225 flow [2021-06-11 09:43:58,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-11 09:43:58,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-11 09:43:58,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-11 09:43:58,767 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-06-11 09:43:58,767 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-11 09:43:58,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-11 09:43:58,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:43:58,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-11 09:43:58,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 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 09:43:58,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:43:58,772 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:43:58,772 INFO L185 Difference]: Start difference. First operand has 157 places, 182 transitions, 2775 flow. Second operand 11 states and 1253 transitions. [2021-06-11 09:43:58,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 400 transitions, 7225 flow [2021-06-11 09:43:59,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 400 transitions, 6993 flow, removed 62 selfloop flow, removed 2 redundant places. [2021-06-11 09:43:59,726 INFO L241 Difference]: Finished difference. Result has 174 places, 263 transitions, 4661 flow [2021-06-11 09:43:59,726 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=2673, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4661, PETRI_PLACES=174, PETRI_TRANSITIONS=263} [2021-06-11 09:43:59,727 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 118 predicate places. [2021-06-11 09:43:59,727 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:43:59,727 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 174 places, 263 transitions, 4661 flow [2021-06-11 09:43:59,727 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 174 places, 263 transitions, 4661 flow [2021-06-11 09:43:59,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 173 places, 263 transitions, 4661 flow [2021-06-11 09:44:01,126 INFO L129 PetriNetUnfolder]: 0/8355 cut-off events. [2021-06-11 09:44:01,126 INFO L130 PetriNetUnfolder]: For 54295/56146 co-relation queries the response was YES. [2021-06-11 09:44:01,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24394 conditions, 8355 events. 0/8355 cut-off events. For 54295/56146 co-relation queries the response was YES. Maximal size of possible extension queue 911. Compared 150077 event pairs, 0 based on Foata normal form. 5/7626 useless extension candidates. Maximal degree in co-relation 0. Up to 786 conditions per place. [2021-06-11 09:44:01,204 INFO L151 LiptonReduction]: Number of co-enabled transitions 2594 [2021-06-11 09:44:01,221 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:44:01,221 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:44:01,222 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1495 [2021-06-11 09:44:01,222 INFO L480 AbstractCegarLoop]: Abstraction has has 173 places, 263 transitions, 4661 flow [2021-06-11 09:44:01,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:44:01,222 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:44:01,223 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] [2021-06-11 09:44:01,223 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-11 09:44:01,223 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 09:44:01,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:44:01,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1114547593, now seen corresponding path program 9 times [2021-06-11 09:44:01,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:44:01,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601236716] [2021-06-11 09:44:01,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:44:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:44:01,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:44:01,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:44:01,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:44:01,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:44:01,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:44:01,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 09:44:01,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:44:01,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 09:44:01,280 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 09:44:01,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 09:44:01,299 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 09:44:01,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 09:44:01,322 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-06-11 09:44:01,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 09:44:01,380 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-06-11 09:44:01,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-06-11 09:44:01,447 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-11 09:44:01,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-11 09:44:01,498 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-11 09:44:01,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-11 09:44:01,546 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 09:44:01,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601236716] [2021-06-11 09:44:01,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:44:01,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-11 09:44:01,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687138455] [2021-06-11 09:44:01,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-11 09:44:01,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:44:01,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-11 09:44:01,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-11 09:44:01,550 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-06-11 09:44:01,551 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 263 transitions, 4661 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:44:01,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:44:01,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-06-11 09:44:01,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:44:10,166 INFO L129 PetriNetUnfolder]: 11632/39445 cut-off events. [2021-06-11 09:44:10,167 INFO L130 PetriNetUnfolder]: For 609931/614706 co-relation queries the response was YES. [2021-06-11 09:44:10,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 216250 conditions, 39445 events. 11632/39445 cut-off events. For 609931/614706 co-relation queries the response was YES. Maximal size of possible extension queue 4451. Compared 620378 event pairs, 3858 based on Foata normal form. 3/38259 useless extension candidates. Maximal degree in co-relation 216180. Up to 10973 conditions per place. [2021-06-11 09:44:10,984 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 310 selfloop transitions, 150 changer transitions 1/479 dead transitions. [2021-06-11 09:44:10,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 479 transitions, 9397 flow [2021-06-11 09:44:10,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-11 09:44:10,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-11 09:44:10,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-11 09:44:10,987 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-06-11 09:44:10,987 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-11 09:44:10,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-11 09:44:10,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:44:10,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-11 09:44:10,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 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 09:44:10,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:44:10,992 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:44:10,992 INFO L185 Difference]: Start difference. First operand has 173 places, 263 transitions, 4661 flow. Second operand 11 states and 1253 transitions. [2021-06-11 09:44:10,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 479 transitions, 9397 flow [2021-06-11 09:44:12,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 479 transitions, 9238 flow, removed 54 selfloop flow, removed 3 redundant places. [2021-06-11 09:44:12,515 INFO L241 Difference]: Finished difference. Result has 189 places, 333 transitions, 6637 flow [2021-06-11 09:44:12,515 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=4570, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6637, PETRI_PLACES=189, PETRI_TRANSITIONS=333} [2021-06-11 09:44:12,516 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 133 predicate places. [2021-06-11 09:44:12,516 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:44:12,516 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 189 places, 333 transitions, 6637 flow [2021-06-11 09:44:12,516 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 189 places, 333 transitions, 6637 flow [2021-06-11 09:44:12,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 188 places, 333 transitions, 6637 flow [2021-06-11 09:44:15,073 INFO L129 PetriNetUnfolder]: 0/12370 cut-off events. [2021-06-11 09:44:15,074 INFO L130 PetriNetUnfolder]: For 103972/107124 co-relation queries the response was YES. [2021-06-11 09:44:15,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38833 conditions, 12370 events. 0/12370 cut-off events. For 103972/107124 co-relation queries the response was YES. Maximal size of possible extension queue 1364. Compared 235511 event pairs, 0 based on Foata normal form. 19/11430 useless extension candidates. Maximal degree in co-relation 0. Up to 1150 conditions per place. [2021-06-11 09:44:15,185 INFO L151 LiptonReduction]: Number of co-enabled transitions 3048 [2021-06-11 09:44:15,204 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:44:15,205 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:44:15,205 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2689 [2021-06-11 09:44:15,205 INFO L480 AbstractCegarLoop]: Abstraction has has 188 places, 333 transitions, 6637 flow [2021-06-11 09:44:15,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:44:15,206 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:44:15,206 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] [2021-06-11 09:44:15,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-11 09:44:15,206 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 09:44:15,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:44:15,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1885401123, now seen corresponding path program 10 times [2021-06-11 09:44:15,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:44:15,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033470901] [2021-06-11 09:44:15,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:44:15,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:44:15,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:44:15,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:44:15,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:44:15,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:44:15,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:44:15,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 09:44:15,245 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 09:44:15,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 09:44:15,257 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 09:44:15,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 09:44:15,274 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-11 09:44:15,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-11 09:44:15,310 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-06-11 09:44:15,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 09:44:15,355 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-06-11 09:44:15,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-06-11 09:44:15,406 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-11 09:44:15,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-11 09:44:15,448 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-11 09:44:15,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-11 09:44:15,493 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 09:44:15,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033470901] [2021-06-11 09:44:15,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:44:15,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-11 09:44:15,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450941313] [2021-06-11 09:44:15,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-11 09:44:15,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:44:15,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-11 09:44:15,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-11 09:44:15,495 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-06-11 09:44:15,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 333 transitions, 6637 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:44:15,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:44:15,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-06-11 09:44:15,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:44:25,599 INFO L129 PetriNetUnfolder]: 12285/39665 cut-off events. [2021-06-11 09:44:25,599 INFO L130 PetriNetUnfolder]: For 815884/822675 co-relation queries the response was YES. [2021-06-11 09:44:26,118 INFO L84 FinitePrefix]: Finished finitePrefix Result has 247857 conditions, 39665 events. 12285/39665 cut-off events. For 815884/822675 co-relation queries the response was YES. Maximal size of possible extension queue 4178. Compared 609845 event pairs, 6599 based on Foata normal form. 9/37895 useless extension candidates. Maximal degree in co-relation 247780. Up to 10920 conditions per place. [2021-06-11 09:44:26,279 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 340 selfloop transitions, 187 changer transitions 1/546 dead transitions. [2021-06-11 09:44:26,279 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 546 transitions, 12268 flow [2021-06-11 09:44:26,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-11 09:44:26,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-11 09:44:26,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-11 09:44:26,281 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-06-11 09:44:26,281 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-11 09:44:26,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-11 09:44:26,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:44:26,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-11 09:44:26,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 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 09:44:26,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:44:26,285 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:44:26,285 INFO L185 Difference]: Start difference. First operand has 188 places, 333 transitions, 6637 flow. Second operand 11 states and 1253 transitions. [2021-06-11 09:44:26,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 546 transitions, 12268 flow [2021-06-11 09:44:29,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 546 transitions, 11824 flow, removed 181 selfloop flow, removed 2 redundant places. [2021-06-11 09:44:29,225 INFO L241 Difference]: Finished difference. Result has 205 places, 401 transitions, 8817 flow [2021-06-11 09:44:29,225 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=6432, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8817, PETRI_PLACES=205, PETRI_TRANSITIONS=401} [2021-06-11 09:44:29,225 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 149 predicate places. [2021-06-11 09:44:29,225 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:44:29,226 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 401 transitions, 8817 flow [2021-06-11 09:44:29,226 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 401 transitions, 8817 flow [2021-06-11 09:44:29,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 204 places, 401 transitions, 8817 flow [2021-06-11 09:44:32,566 INFO L129 PetriNetUnfolder]: 0/13743 cut-off events. [2021-06-11 09:44:32,566 INFO L130 PetriNetUnfolder]: For 153984/158950 co-relation queries the response was YES. [2021-06-11 09:44:32,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46285 conditions, 13743 events. 0/13743 cut-off events. For 153984/158950 co-relation queries the response was YES. Maximal size of possible extension queue 1537. Compared 266349 event pairs, 0 based on Foata normal form. 21/12758 useless extension candidates. Maximal degree in co-relation 0. Up to 1278 conditions per place. [2021-06-11 09:44:32,974 INFO L151 LiptonReduction]: Number of co-enabled transitions 3468 [2021-06-11 09:44:32,998 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:44:32,999 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:44:32,999 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3774 [2021-06-11 09:44:33,000 INFO L480 AbstractCegarLoop]: Abstraction has has 204 places, 401 transitions, 8817 flow [2021-06-11 09:44:33,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:44:33,000 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:44:33,000 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] [2021-06-11 09:44:33,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-11 09:44:33,000 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 09:44:33,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:44:33,001 INFO L82 PathProgramCache]: Analyzing trace with hash -775744753, now seen corresponding path program 11 times [2021-06-11 09:44:33,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:44:33,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700128893] [2021-06-11 09:44:33,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:44:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:44:33,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:44:33,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:44:33,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:44:33,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:44:33,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:44:33,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 09:44:33,044 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 09:44:33,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 09:44:33,058 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 09:44:33,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 09:44:33,077 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 09:44:33,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 09:44:33,101 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-06-11 09:44:33,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 09:44:33,144 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-06-11 09:44:33,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-06-11 09:44:33,196 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-11 09:44:33,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-11 09:44:33,242 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-11 09:44:33,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-11 09:44:33,279 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 09:44:33,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700128893] [2021-06-11 09:44:33,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:44:33,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-11 09:44:33,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617560743] [2021-06-11 09:44:33,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-11 09:44:33,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:44:33,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-11 09:44:33,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-11 09:44:33,282 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-06-11 09:44:33,283 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 401 transitions, 8817 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:44:33,283 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:44:33,283 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-06-11 09:44:33,283 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:44:45,753 INFO L129 PetriNetUnfolder]: 12610/44436 cut-off events. [2021-06-11 09:44:45,753 INFO L130 PetriNetUnfolder]: For 994965/1005425 co-relation queries the response was YES. [2021-06-11 09:44:46,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 280417 conditions, 44436 events. 12610/44436 cut-off events. For 994965/1005425 co-relation queries the response was YES. Maximal size of possible extension queue 5074. Compared 721064 event pairs, 5660 based on Foata normal form. 28/43087 useless extension candidates. Maximal degree in co-relation 280332. Up to 12152 conditions per place. [2021-06-11 09:44:46,843 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 262 selfloop transitions, 250 changer transitions 1/531 dead transitions. [2021-06-11 09:44:46,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 531 transitions, 12430 flow [2021-06-11 09:44:46,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-11 09:44:46,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-11 09:44:46,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-11 09:44:46,846 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-06-11 09:44:46,846 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-11 09:44:46,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-11 09:44:46,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:44:46,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-11 09:44:46,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 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 09:44:46,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:44:46,850 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:44:46,850 INFO L185 Difference]: Start difference. First operand has 204 places, 401 transitions, 8817 flow. Second operand 11 states and 1253 transitions. [2021-06-11 09:44:46,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 531 transitions, 12430 flow [2021-06-11 09:44:50,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 531 transitions, 12066 flow, removed 113 selfloop flow, removed 2 redundant places. [2021-06-11 09:44:50,261 INFO L241 Difference]: Finished difference. Result has 221 places, 462 transitions, 10868 flow [2021-06-11 09:44:50,262 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=8596, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10868, PETRI_PLACES=221, PETRI_TRANSITIONS=462} [2021-06-11 09:44:50,262 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 165 predicate places. [2021-06-11 09:44:50,262 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:44:50,262 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 221 places, 462 transitions, 10868 flow [2021-06-11 09:44:50,262 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 221 places, 462 transitions, 10868 flow [2021-06-11 09:44:50,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 220 places, 462 transitions, 10868 flow [2021-06-11 09:44:54,405 INFO L129 PetriNetUnfolder]: 0/14718 cut-off events. [2021-06-11 09:44:54,405 INFO L130 PetriNetUnfolder]: For 198171/205264 co-relation queries the response was YES. [2021-06-11 09:44:54,405 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52672 conditions, 14718 events. 0/14718 cut-off events. For 198171/205264 co-relation queries the response was YES. Maximal size of possible extension queue 1638. Compared 288679 event pairs, 0 based on Foata normal form. 34/13664 useless extension candidates. Maximal degree in co-relation 0. Up to 1389 conditions per place. [2021-06-11 09:44:54,553 INFO L151 LiptonReduction]: Number of co-enabled transitions 4110 [2021-06-11 09:44:54,586 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:44:54,586 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:44:54,587 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4325 [2021-06-11 09:44:54,587 INFO L480 AbstractCegarLoop]: Abstraction has has 220 places, 462 transitions, 10868 flow [2021-06-11 09:44:54,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:44:54,587 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:44:54,587 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] [2021-06-11 09:44:54,588 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-11 09:44:54,588 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 09:44:54,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:44:54,588 INFO L82 PathProgramCache]: Analyzing trace with hash -853116425, now seen corresponding path program 12 times [2021-06-11 09:44:54,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:44:54,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530117621] [2021-06-11 09:44:54,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:44:54,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:44:54,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:44:54,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:44:54,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:44:54,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:44:54,619 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 09:44:54,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 09:44:54,627 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 09:44:54,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 09:44:54,640 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 09:44:54,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 09:44:54,656 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-11 09:44:54,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-11 09:44:54,692 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-06-11 09:44:54,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 09:44:54,735 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-06-11 09:44:54,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-06-11 09:44:54,778 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-11 09:44:54,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-11 09:44:54,824 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-11 09:44:54,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-11 09:44:54,859 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 09:44:54,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530117621] [2021-06-11 09:44:54,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:44:54,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-11 09:44:54,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755019169] [2021-06-11 09:44:54,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-11 09:44:54,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:44:54,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-11 09:44:54,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-11 09:44:54,861 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-06-11 09:44:54,862 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 462 transitions, 10868 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:44:54,862 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:44:54,862 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-06-11 09:44:54,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:45:12,110 INFO L129 PetriNetUnfolder]: 13738/45275 cut-off events. [2021-06-11 09:45:12,110 INFO L130 PetriNetUnfolder]: For 1301207/1318383 co-relation queries the response was YES. [2021-06-11 09:45:12,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 326158 conditions, 45275 events. 13738/45275 cut-off events. For 1301207/1318383 co-relation queries the response was YES. Maximal size of possible extension queue 5008. Compared 714042 event pairs, 5983 based on Foata normal form. 22/43972 useless extension candidates. Maximal degree in co-relation 326065. Up to 14765 conditions per place. [2021-06-11 09:45:13,086 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 280 selfloop transitions, 293 changer transitions 1/592 dead transitions. [2021-06-11 09:45:13,086 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 592 transitions, 15032 flow [2021-06-11 09:45:13,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-11 09:45:13,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-11 09:45:13,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-11 09:45:13,088 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-06-11 09:45:13,088 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-11 09:45:13,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-11 09:45:13,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:45:13,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-11 09:45:13,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 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 09:45:13,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:45:13,091 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:45:13,091 INFO L185 Difference]: Start difference. First operand has 220 places, 462 transitions, 10868 flow. Second operand 11 states and 1253 transitions. [2021-06-11 09:45:13,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 592 transitions, 15032 flow [2021-06-11 09:45:20,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 592 transitions, 14656 flow, removed 90 selfloop flow, removed 2 redundant places. [2021-06-11 09:45:20,630 INFO L241 Difference]: Finished difference. Result has 237 places, 530 transitions, 13590 flow [2021-06-11 09:45:20,630 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=10562, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13590, PETRI_PLACES=237, PETRI_TRANSITIONS=530} [2021-06-11 09:45:20,630 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 181 predicate places. [2021-06-11 09:45:20,631 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:45:20,631 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 530 transitions, 13590 flow [2021-06-11 09:45:20,631 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 530 transitions, 13590 flow [2021-06-11 09:45:20,636 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 236 places, 530 transitions, 13590 flow [2021-06-11 09:45:26,576 INFO L129 PetriNetUnfolder]: 0/15781 cut-off events. [2021-06-11 09:45:26,577 INFO L130 PetriNetUnfolder]: For 259634/271605 co-relation queries the response was YES. [2021-06-11 09:45:26,577 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58838 conditions, 15781 events. 0/15781 cut-off events. For 259634/271605 co-relation queries the response was YES. Maximal size of possible extension queue 1728. Compared 312841 event pairs, 0 based on Foata normal form. 61/14704 useless extension candidates. Maximal degree in co-relation 0. Up to 1515 conditions per place. [2021-06-11 09:45:26,732 INFO L151 LiptonReduction]: Number of co-enabled transitions 4504 [2021-06-11 09:45:26,772 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:45:26,773 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:45:26,773 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6142 [2021-06-11 09:45:26,773 INFO L480 AbstractCegarLoop]: Abstraction has has 236 places, 530 transitions, 13590 flow [2021-06-11 09:45:26,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:45:26,773 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:45:26,774 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] [2021-06-11 09:45:26,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-11 09:45:26,774 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 09:45:26,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:45:26,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1957122539, now seen corresponding path program 13 times [2021-06-11 09:45:26,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:45:26,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064742111] [2021-06-11 09:45:26,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:45:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:45:26,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:45:26,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:45:26,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:45:26,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:45:26,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:45:26,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 09:45:26,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:45:26,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 09:45:26,823 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-11 09:45:26,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-11 09:45:26,850 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-11 09:45:26,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-11 09:45:26,886 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-06-11 09:45:26,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 09:45:26,933 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-11 09:45:26,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-11 09:45:26,975 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-06-11 09:45:26,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-06-11 09:45:27,018 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-11 09:45:27,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-11 09:45:27,050 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 09:45:27,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064742111] [2021-06-11 09:45:27,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:45:27,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-11 09:45:27,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464249442] [2021-06-11 09:45:27,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-11 09:45:27,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:45:27,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-11 09:45:27,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-11 09:45:27,052 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-06-11 09:45:27,053 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 530 transitions, 13590 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:45:27,053 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:45:27,053 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-06-11 09:45:27,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:45:46,890 INFO L129 PetriNetUnfolder]: 14353/50563 cut-off events. [2021-06-11 09:45:46,890 INFO L130 PetriNetUnfolder]: For 1693097/1719529 co-relation queries the response was YES. [2021-06-11 09:45:47,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 379677 conditions, 50563 events. 14353/50563 cut-off events. For 1693097/1719529 co-relation queries the response was YES. Maximal size of possible extension queue 5524. Compared 833314 event pairs, 6244 based on Foata normal form. 22/49165 useless extension candidates. Maximal degree in co-relation 379576. Up to 13267 conditions per place. [2021-06-11 09:45:48,025 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 502 selfloop transitions, 283 changer transitions 3/806 dead transitions. [2021-06-11 09:45:48,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 806 transitions, 21505 flow [2021-06-11 09:45:48,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-11 09:45:48,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-11 09:45:48,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-11 09:45:48,027 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-06-11 09:45:48,027 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-11 09:45:48,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-11 09:45:48,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:45:48,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-11 09:45:48,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 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 09:45:48,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:45:48,030 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:45:48,030 INFO L185 Difference]: Start difference. First operand has 236 places, 530 transitions, 13590 flow. Second operand 11 states and 1253 transitions. [2021-06-11 09:45:48,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 806 transitions, 21505 flow [2021-06-11 09:45:57,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 806 transitions, 21058 flow, removed 100 selfloop flow, removed 2 redundant places. [2021-06-11 09:45:57,443 INFO L241 Difference]: Finished difference. Result has 253 places, 587 transitions, 15570 flow [2021-06-11 09:45:57,444 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=13318, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15570, PETRI_PLACES=253, PETRI_TRANSITIONS=587} [2021-06-11 09:45:57,444 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 197 predicate places. [2021-06-11 09:45:57,444 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:45:57,444 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 253 places, 587 transitions, 15570 flow [2021-06-11 09:45:57,445 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 253 places, 587 transitions, 15570 flow [2021-06-11 09:45:57,451 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 252 places, 587 transitions, 15570 flow [2021-06-11 09:46:05,620 INFO L129 PetriNetUnfolder]: 0/19733 cut-off events. [2021-06-11 09:46:05,620 INFO L130 PetriNetUnfolder]: For 351520/368661 co-relation queries the response was YES. [2021-06-11 09:46:05,620 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75358 conditions, 19733 events. 0/19733 cut-off events. For 351520/368661 co-relation queries the response was YES. Maximal size of possible extension queue 2121. Compared 403622 event pairs, 0 based on Foata normal form. 146/18338 useless extension candidates. Maximal degree in co-relation 0. Up to 1979 conditions per place. [2021-06-11 09:46:06,078 INFO L151 LiptonReduction]: Number of co-enabled transitions 5130 [2021-06-11 09:46:06,128 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:46:06,128 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:46:06,128 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8684 [2021-06-11 09:46:06,129 INFO L480 AbstractCegarLoop]: Abstraction has has 252 places, 587 transitions, 15570 flow [2021-06-11 09:46:06,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:46:06,129 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:46:06,129 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] [2021-06-11 09:46:06,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-11 09:46:06,129 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 09:46:06,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:46:06,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1858571209, now seen corresponding path program 14 times [2021-06-11 09:46:06,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:46:06,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931332810] [2021-06-11 09:46:06,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:46:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:46:06,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:46:06,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:46:06,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:46:06,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:46:06,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:46:06,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 09:46:06,186 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 09:46:06,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 09:46:06,198 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 09:46:06,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 09:46:06,213 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 09:46:06,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 09:46:06,233 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 09:46:06,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 09:46:06,259 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-06-11 09:46:06,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-11 09:46:06,289 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-11 09:46:06,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-11 09:46:06,327 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-11 09:46:06,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-11 09:46:06,359 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 09:46:06,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931332810] [2021-06-11 09:46:06,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:46:06,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-11 09:46:06,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699775548] [2021-06-11 09:46:06,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-11 09:46:06,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:46:06,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-11 09:46:06,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-11 09:46:06,361 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-06-11 09:46:06,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 587 transitions, 15570 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:46:06,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:46:06,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-06-11 09:46:06,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:46:32,138 INFO L129 PetriNetUnfolder]: 15372/58818 cut-off events. [2021-06-11 09:46:32,138 INFO L130 PetriNetUnfolder]: For 2086576/2119702 co-relation queries the response was YES. [2021-06-11 09:46:33,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 444520 conditions, 58818 events. 15372/58818 cut-off events. For 2086576/2119702 co-relation queries the response was YES. Maximal size of possible extension queue 6450. Compared 1020562 event pairs, 6719 based on Foata normal form. 40/56821 useless extension candidates. Maximal degree in co-relation 444411. Up to 15495 conditions per place. [2021-06-11 09:46:33,579 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 439 selfloop transitions, 384 changer transitions 1/842 dead transitions. [2021-06-11 09:46:33,580 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 842 transitions, 22752 flow [2021-06-11 09:46:33,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-11 09:46:33,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-11 09:46:33,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-11 09:46:33,581 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-06-11 09:46:33,581 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-11 09:46:33,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-11 09:46:33,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:46:33,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-11 09:46:33,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 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 09:46:33,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:46:33,585 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:46:33,585 INFO L185 Difference]: Start difference. First operand has 252 places, 587 transitions, 15570 flow. Second operand 11 states and 1253 transitions. [2021-06-11 09:46:33,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 842 transitions, 22752 flow [2021-06-11 09:46:49,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 842 transitions, 22171 flow, removed 192 selfloop flow, removed 3 redundant places. [2021-06-11 09:46:49,862 INFO L241 Difference]: Finished difference. Result has 268 places, 710 transitions, 19535 flow [2021-06-11 09:46:49,863 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=15073, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19535, PETRI_PLACES=268, PETRI_TRANSITIONS=710} [2021-06-11 09:46:49,863 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 212 predicate places. [2021-06-11 09:46:49,863 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:46:49,863 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 268 places, 710 transitions, 19535 flow [2021-06-11 09:46:49,863 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 268 places, 710 transitions, 19535 flow [2021-06-11 09:46:49,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 267 places, 710 transitions, 19535 flow [2021-06-11 09:47:00,633 INFO L129 PetriNetUnfolder]: 0/23664 cut-off events. [2021-06-11 09:47:00,634 INFO L130 PetriNetUnfolder]: For 460733/482724 co-relation queries the response was YES. [2021-06-11 09:47:00,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92818 conditions, 23664 events. 0/23664 cut-off events. For 460733/482724 co-relation queries the response was YES. Maximal size of possible extension queue 2518. Compared 496817 event pairs, 0 based on Foata normal form. 279/22220 useless extension candidates. Maximal degree in co-relation 0. Up to 2357 conditions per place. [2021-06-11 09:47:01,006 INFO L151 LiptonReduction]: Number of co-enabled transitions 6112 [2021-06-11 09:47:01,074 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:47:01,074 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:47:01,074 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11211 [2021-06-11 09:47:01,075 INFO L480 AbstractCegarLoop]: Abstraction has has 267 places, 710 transitions, 19535 flow [2021-06-11 09:47:01,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:47:01,075 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:47:01,075 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] [2021-06-11 09:47:01,075 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-11 09:47:01,075 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 09:47:01,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:47:01,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1944996155, now seen corresponding path program 15 times [2021-06-11 09:47:01,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:47:01,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130151714] [2021-06-11 09:47:01,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:47:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:47:01,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:47:01,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:47:01,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:47:01,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:47:01,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:47:01,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 09:47:01,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:47:01,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 09:47:01,132 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 09:47:01,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 09:47:01,149 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 09:47:01,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 09:47:01,170 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 09:47:01,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 09:47:01,195 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-06-11 09:47:01,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-06-11 09:47:01,245 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-11 09:47:01,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-11 09:47:01,280 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-11 09:47:01,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-11 09:47:01,318 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 09:47:01,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130151714] [2021-06-11 09:47:01,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:47:01,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-11 09:47:01,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459826261] [2021-06-11 09:47:01,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-11 09:47:01,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:47:01,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-11 09:47:01,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-11 09:47:01,320 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-06-11 09:47:01,321 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 710 transitions, 19535 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:47:01,321 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:47:01,321 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-06-11 09:47:01,321 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:47:31,528 INFO L129 PetriNetUnfolder]: 15505/58876 cut-off events. [2021-06-11 09:47:31,529 INFO L130 PetriNetUnfolder]: For 2163906/2195815 co-relation queries the response was YES. [2021-06-11 09:47:32,786 INFO L84 FinitePrefix]: Finished finitePrefix Result has 453815 conditions, 58876 events. 15505/58876 cut-off events. For 2163906/2195815 co-relation queries the response was YES. Maximal size of possible extension queue 6406. Compared 1022019 event pairs, 6639 based on Foata normal form. 40/56669 useless extension candidates. Maximal degree in co-relation 453699. Up to 16108 conditions per place. [2021-06-11 09:47:33,080 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 764 selfloop transitions, 373 changer transitions 2/1157 dead transitions. [2021-06-11 09:47:33,080 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 1157 transitions, 33375 flow [2021-06-11 09:47:33,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-11 09:47:33,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-11 09:47:33,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-11 09:47:33,081 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.883016208597604 [2021-06-11 09:47:33,082 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-11 09:47:33,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-11 09:47:33,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:47:33,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-11 09:47:33,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 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 09:47:33,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:47:33,085 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 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 09:47:33,085 INFO L185 Difference]: Start difference. First operand has 267 places, 710 transitions, 19535 flow. Second operand 11 states and 1253 transitions. [2021-06-11 09:47:33,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 1157 transitions, 33375 flow [2021-06-11 09:47:50,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 1157 transitions, 32267 flow, removed 456 selfloop flow, removed 2 redundant places. [2021-06-11 09:47:50,492 INFO L241 Difference]: Finished difference. Result has 284 places, 839 transitions, 23847 flow [2021-06-11 09:47:50,493 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=18947, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23847, PETRI_PLACES=284, PETRI_TRANSITIONS=839} [2021-06-11 09:47:50,493 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 228 predicate places. [2021-06-11 09:47:50,493 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:47:50,493 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 284 places, 839 transitions, 23847 flow [2021-06-11 09:47:50,493 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 284 places, 839 transitions, 23847 flow [2021-06-11 09:47:50,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 283 places, 839 transitions, 23847 flow [2021-06-11 09:48:02,875 INFO L129 PetriNetUnfolder]: 0/24625 cut-off events. [2021-06-11 09:48:02,875 INFO L130 PetriNetUnfolder]: For 519620/539266 co-relation queries the response was YES. [2021-06-11 09:48:02,875 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101116 conditions, 24625 events. 0/24625 cut-off events. For 519620/539266 co-relation queries the response was YES. Maximal size of possible extension queue 2727. Compared 519866 event pairs, 0 based on Foata normal form. 137/23037 useless extension candidates. Maximal degree in co-relation 0. Up to 2446 conditions per place. [2021-06-11 09:48:03,357 INFO L151 LiptonReduction]: Number of co-enabled transitions 7202 [2021-06-11 09:48:03,450 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:48:03,450 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:48:03,450 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12957 [2021-06-11 09:48:03,451 INFO L480 AbstractCegarLoop]: Abstraction has has 283 places, 839 transitions, 23847 flow [2021-06-11 09:48:03,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:48:03,451 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:48:03,451 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] [2021-06-11 09:48:03,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-11 09:48:03,451 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 09:48:03,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:48:03,452 INFO L82 PathProgramCache]: Analyzing trace with hash 122469419, now seen corresponding path program 16 times [2021-06-11 09:48:03,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:48:03,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629923866] [2021-06-11 09:48:03,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:48:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:48:03,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:48:03,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:48:03,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:48:03,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:48:03,479 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 09:48:03,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 09:48:03,487 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 09:48:03,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 09:48:03,499 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 09:48:03,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 09:48:03,516 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 09:48:03,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 09:48:03,539 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 09:48:03,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 09:48:03,570 INFO L142 QuantifierPusher]: treesize reduction 36, result has 61.3 percent of original size [2021-06-11 09:48:03,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 09:48:03,629 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-11 09:48:03,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-11 09:48:03,677 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-11 09:48:03,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-11 09:48:03,721 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 09:48:03,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629923866] [2021-06-11 09:48:03,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:48:03,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-11 09:48:03,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552990875] [2021-06-11 09:48:03,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-11 09:48:03,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:48:03,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-11 09:48:03,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-11 09:48:03,724 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-06-11 09:48:03,724 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 839 transitions, 23847 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 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 09:48:03,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:48:03,724 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-06-11 09:48:03,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:48:36,950 INFO L129 PetriNetUnfolder]: 15482/60373 cut-off events. [2021-06-11 09:48:36,950 INFO L130 PetriNetUnfolder]: For 2417103/2457806 co-relation queries the response was YES. [2021-06-11 09:48:38,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 480691 conditions, 60373 events. 15482/60373 cut-off events. For 2417103/2457806 co-relation queries the response was YES. Maximal size of possible extension queue 6831. Compared 1053690 event pairs, 7836 based on Foata normal form. 62/58608 useless extension candidates. Maximal degree in co-relation 480567. Up to 13940 conditions per place.