/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_12.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d9e330d [2020-02-10 23:14:15,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-02-10 23:14:15,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-02-10 23:14:15,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-02-10 23:14:15,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-02-10 23:14:15,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-02-10 23:14:15,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-02-10 23:14:15,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-02-10 23:14:15,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-02-10 23:14:15,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-02-10 23:14:15,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-02-10 23:14:15,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-02-10 23:14:15,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-02-10 23:14:15,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-02-10 23:14:15,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-02-10 23:14:15,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-02-10 23:14:15,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-02-10 23:14:15,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-02-10 23:14:15,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-02-10 23:14:15,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-02-10 23:14:15,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-02-10 23:14:15,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-02-10 23:14:15,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-02-10 23:14:15,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-02-10 23:14:15,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-02-10 23:14:15,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-02-10 23:14:15,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-02-10 23:14:15,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-02-10 23:14:15,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-02-10 23:14:15,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-02-10 23:14:15,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-02-10 23:14:15,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-02-10 23:14:15,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-02-10 23:14:15,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-02-10 23:14:15,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-02-10 23:14:15,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-02-10 23:14:15,112 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-VariableLbe.epf [2020-02-10 23:14:15,128 INFO L113 SettingsManager]: Loading preferences was successful [2020-02-10 23:14:15,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-02-10 23:14:15,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-02-10 23:14:15,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-02-10 23:14:15,130 INFO L138 SettingsManager]: * Use SBE=true [2020-02-10 23:14:15,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-02-10 23:14:15,130 INFO L138 SettingsManager]: * sizeof long=4 [2020-02-10 23:14:15,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-02-10 23:14:15,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-02-10 23:14:15,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-02-10 23:14:15,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-02-10 23:14:15,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-02-10 23:14:15,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-02-10 23:14:15,131 INFO L138 SettingsManager]: * sizeof long double=12 [2020-02-10 23:14:15,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-02-10 23:14:15,132 INFO L138 SettingsManager]: * Use constant arrays=true [2020-02-10 23:14:15,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-02-10 23:14:15,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-02-10 23:14:15,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-02-10 23:14:15,133 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-02-10 23:14:15,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-02-10 23:14:15,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-10 23:14:15,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-02-10 23:14:15,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-02-10 23:14:15,134 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-02-10 23:14:15,134 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-02-10 23:14:15,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-02-10 23:14:15,134 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-02-10 23:14:15,134 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-02-10 23:14:15,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-02-10 23:14:15,414 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-02-10 23:14:15,431 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-02-10 23:14:15,435 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-02-10 23:14:15,436 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-02-10 23:14:15,437 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-02-10 23:14:15,439 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_12.bpl [2020-02-10 23:14:15,440 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_12.bpl' [2020-02-10 23:14:15,490 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-02-10 23:14:15,494 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-02-10 23:14:15,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-02-10 23:14:15,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-02-10 23:14:15,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-02-10 23:14:15,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:14:15" (1/1) ... [2020-02-10 23:14:15,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:14:15" (1/1) ... [2020-02-10 23:14:15,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-02-10 23:14:15,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-02-10 23:14:15,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-02-10 23:14:15,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-02-10 23:14:15,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:14:15" (1/1) ... [2020-02-10 23:14:15,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:14:15" (1/1) ... [2020-02-10 23:14:15,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:14:15" (1/1) ... [2020-02-10 23:14:15,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:14:15" (1/1) ... [2020-02-10 23:14:15,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:14:15" (1/1) ... [2020-02-10 23:14:15,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:14:15" (1/1) ... [2020-02-10 23:14:15,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:14:15" (1/1) ... [2020-02-10 23:14:15,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-02-10 23:14:15,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-02-10 23:14:15,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-02-10 23:14:15,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-02-10 23:14:15,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:14:15" (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 [2020-02-10 23:14:15,656 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-02-10 23:14:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-02-10 23:14:15,658 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-02-10 23:14:15,658 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-02-10 23:14:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-02-10 23:14:15,659 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-02-10 23:14:15,659 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-02-10 23:14:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-02-10 23:14:15,660 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-02-10 23:14:15,660 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-02-10 23:14:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-02-10 23:14:15,660 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-02-10 23:14:15,660 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-02-10 23:14:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-02-10 23:14:15,661 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-02-10 23:14:15,661 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2020-02-10 23:14:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2020-02-10 23:14:15,661 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2020-02-10 23:14:15,662 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-02-10 23:14:15,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-02-10 23:14:15,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-02-10 23:14:15,664 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-02-10 23:14:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-02-10 23:14:15,665 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-02-10 23:14:15,665 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2020-02-10 23:14:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2020-02-10 23:14:15,667 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2020-02-10 23:14:15,668 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2020-02-10 23:14:15,668 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2020-02-10 23:14:15,668 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2020-02-10 23:14:15,669 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2020-02-10 23:14:15,669 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2020-02-10 23:14:15,669 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2020-02-10 23:14:15,669 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2020-02-10 23:14:15,670 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2020-02-10 23:14:15,670 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2020-02-10 23:14:15,671 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2020-02-10 23:14:15,671 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2020-02-10 23:14:15,671 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2020-02-10 23:14:15,672 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-02-10 23:14:15,985 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-02-10 23:14:15,986 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-02-10 23:14:15,989 INFO L202 PluginConnector]: Adding new model example_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:14:15 BoogieIcfgContainer [2020-02-10 23:14:15,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-02-10 23:14:15,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-02-10 23:14:15,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-02-10 23:14:15,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-02-10 23:14:15,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:14:15" (1/2) ... [2020-02-10 23:14:16,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e342cb1 and model type example_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:14:16, skipping insertion in model container [2020-02-10 23:14:16,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:14:15" (2/2) ... [2020-02-10 23:14:16,002 INFO L109 eAbstractionObserver]: Analyzing ICFG example_12.bpl [2020-02-10 23:14:16,014 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-02-10 23:14:16,021 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-02-10 23:14:16,022 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-02-10 23:14:16,340 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-02-10 23:14:16,358 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-02-10 23:14:16,358 INFO L376 AbstractCegarLoop]: Hoare is false [2020-02-10 23:14:16,358 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-02-10 23:14:16,358 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-02-10 23:14:16,358 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-02-10 23:14:16,359 INFO L380 AbstractCegarLoop]: Difference is false [2020-02-10 23:14:16,359 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-02-10 23:14:16,359 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-02-10 23:14:16,376 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 100 places, 195 transitions [2020-02-10 23:15:02,011 INFO L129 PetriNetUnfolder]: 20481/24615 cut-off events. [2020-02-10 23:15:02,011 INFO L130 PetriNetUnfolder]: For 24576/24576 co-relation queries the response was YES. [2020-02-10 23:15:02,361 INFO L76 FinitePrefix]: Finished finitePrefix Result has 49228 conditions, 24615 events. 20481/24615 cut-off events. For 24576/24576 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 94642 event pairs. 0/24614 useless extension candidates. Maximal degree in co-relation 22585. Up to 5544 conditions per place. [2020-02-10 23:15:02,362 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 195 transitions [2020-02-10 23:15:02,939 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 181 transitions [2020-02-10 23:15:02,944 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 181 transitions [2020-02-10 23:15:02,945 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 86 places, 181 transitions [2020-02-10 23:15:47,036 INFO L129 PetriNetUnfolder]: 20481/24613 cut-off events. [2020-02-10 23:15:47,036 INFO L130 PetriNetUnfolder]: For 24576/24576 co-relation queries the response was YES. [2020-02-10 23:15:47,247 INFO L76 FinitePrefix]: Finished finitePrefix Result has 49226 conditions, 24613 events. 20481/24613 cut-off events. For 24576/24576 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 101337 event pairs. 0/24613 useless extension candidates. Maximal degree in co-relation 22585. Up to 5544 conditions per place. [2020-02-10 23:15:47,957 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 86 places, 181 transitions [2020-02-10 23:16:34,074 INFO L129 PetriNetUnfolder]: 20481/24613 cut-off events. [2020-02-10 23:16:34,074 INFO L130 PetriNetUnfolder]: For 24576/24576 co-relation queries the response was YES. [2020-02-10 23:16:34,273 INFO L76 FinitePrefix]: Finished finitePrefix Result has 49226 conditions, 24613 events. 20481/24613 cut-off events. For 24576/24576 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 101337 event pairs. 0/24613 useless extension candidates. Maximal degree in co-relation 22585. Up to 5544 conditions per place. [2020-02-10 23:16:34,691 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 6600 [2020-02-10 23:16:34,692 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-02-10 23:16:34,939 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1782 [2020-02-10 23:16:34,940 INFO L214 etLargeBlockEncoding]: Total number of compositions: 12 [2020-02-10 23:16:34,940 INFO L160 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 92001 [2020-02-10 23:17:16,829 INFO L129 PetriNetUnfolder]: 20481/24600 cut-off events. [2020-02-10 23:17:16,829 INFO L130 PetriNetUnfolder]: For 24576/24576 co-relation queries the response was YES. [2020-02-10 23:17:16,829 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:17:16,830 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:17:16,831 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 23:17:16,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:17:16,837 INFO L82 PathProgramCache]: Analyzing trace with hash -240088033, now seen corresponding path program 1 times [2020-02-10 23:17:16,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:17:16,847 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211189707] [2020-02-10 23:17:16,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:17:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:17:17,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:17:17,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211189707] [2020-02-10 23:17:17,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:17:17,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:17:17,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247561806] [2020-02-10 23:17:17,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:17:17,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:17:17,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:17:17,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:17:17,044 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 207 [2020-02-10 23:17:17,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 169 transitions. Second operand 3 states. [2020-02-10 23:17:17,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:17:17,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 207 [2020-02-10 23:17:17,048 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:17:31,739 INFO L129 PetriNetUnfolder]: 11153/13787 cut-off events. [2020-02-10 23:17:31,740 INFO L130 PetriNetUnfolder]: For 19345/19345 co-relation queries the response was YES. [2020-02-10 23:17:31,823 INFO L76 FinitePrefix]: Finished finitePrefix Result has 28150 conditions, 13787 events. 11153/13787 cut-off events. For 19345/19345 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 61254 event pairs. 1486/15273 useless extension candidates. Maximal degree in co-relation 22552. Up to 2772 conditions per place. [2020-02-10 23:17:31,990 INFO L145 encePairwiseOnDemand]: 199/207 looper letters, 5 selfloop transitions, 1 changer transitions 0/162 dead transitions. [2020-02-10 23:17:31,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:17:31,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:17:32,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2020-02-10 23:17:32,006 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9581320450885669 [2020-02-10 23:17:32,007 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2020-02-10 23:17:32,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2020-02-10 23:17:32,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:17:32,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2020-02-10 23:17:32,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:17:32,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:17:32,023 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:17:32,026 INFO L178 Difference]: Start difference. First operand has 74 places, 169 transitions. Second operand 3 states and 595 transitions. [2020-02-10 23:17:32,029 INFO L206 Difference]: Finished difference. Result has 76 places, 162 transitions [2020-02-10 23:17:32,031 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=773, PETRI_PLACES=76, PETRI_TRANSITIONS=162} [2020-02-10 23:17:32,032 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 76 places, 162 transitions [2020-02-10 23:17:45,180 INFO L129 PetriNetUnfolder]: 11153/13787 cut-off events. [2020-02-10 23:17:45,180 INFO L130 PetriNetUnfolder]: For 13763/13763 co-relation queries the response was YES. [2020-02-10 23:17:45,246 INFO L76 FinitePrefix]: Finished finitePrefix Result has 27588 conditions, 13787 events. 11153/13787 cut-off events. For 13763/13763 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 57167 event pairs. 0/13787 useless extension candidates. Maximal degree in co-relation 27549. Up to 2772 conditions per place. [2020-02-10 23:17:45,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 162 transitions [2020-02-10 23:17:45,458 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 162 transitions [2020-02-10 23:17:45,459 INFO L479 AbstractCegarLoop]: Abstraction has has 76 places, 162 transitions [2020-02-10 23:17:45,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:17:59,529 INFO L129 PetriNetUnfolder]: 11153/13786 cut-off events. [2020-02-10 23:17:59,530 INFO L130 PetriNetUnfolder]: For 13763/13763 co-relation queries the response was YES. [2020-02-10 23:17:59,530 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:17:59,530 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:17:59,530 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 23:17:59,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:17:59,531 INFO L82 PathProgramCache]: Analyzing trace with hash 43370467, now seen corresponding path program 1 times [2020-02-10 23:17:59,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:17:59,531 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814157757] [2020-02-10 23:17:59,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:17:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:17:59,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:17:59,574 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814157757] [2020-02-10 23:17:59,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:17:59,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:17:59,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045452765] [2020-02-10 23:17:59,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:17:59,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:17:59,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:17:59,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:17:59,579 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 207 [2020-02-10 23:17:59,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 162 transitions. Second operand 3 states. [2020-02-10 23:17:59,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:17:59,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 207 [2020-02-10 23:17:59,580 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:18:12,343 INFO L129 PetriNetUnfolder]: 10693/13271 cut-off events. [2020-02-10 23:18:12,344 INFO L130 PetriNetUnfolder]: For 15704/15704 co-relation queries the response was YES. [2020-02-10 23:18:12,408 INFO L76 FinitePrefix]: Finished finitePrefix Result has 27702 conditions, 13271 events. 10693/13271 cut-off events. For 15704/15704 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 59747 event pairs. 56/13327 useless extension candidates. Maximal degree in co-relation 27661. Up to 2772 conditions per place. [2020-02-10 23:18:12,622 INFO L145 encePairwiseOnDemand]: 203/207 looper letters, 9 selfloop transitions, 1 changer transitions 0/159 dead transitions. [2020-02-10 23:18:12,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:18:12,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:18:12,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2020-02-10 23:18:12,626 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9581320450885669 [2020-02-10 23:18:12,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2020-02-10 23:18:12,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2020-02-10 23:18:12,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:18:12,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2020-02-10 23:18:12,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:18:12,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:18:12,630 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:18:12,630 INFO L178 Difference]: Start difference. First operand has 76 places, 162 transitions. Second operand 3 states and 595 transitions. [2020-02-10 23:18:12,632 INFO L206 Difference]: Finished difference. Result has 78 places, 159 transitions [2020-02-10 23:18:12,632 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=760, PETRI_PLACES=78, PETRI_TRANSITIONS=159} [2020-02-10 23:18:12,633 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 78 places, 159 transitions [2020-02-10 23:18:26,227 INFO L129 PetriNetUnfolder]: 10693/13271 cut-off events. [2020-02-10 23:18:26,227 INFO L130 PetriNetUnfolder]: For 13248/13248 co-relation queries the response was YES. [2020-02-10 23:18:26,295 INFO L76 FinitePrefix]: Finished finitePrefix Result has 26558 conditions, 13271 events. 10693/13271 cut-off events. For 13248/13248 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 55083 event pairs. 0/13271 useless extension candidates. Maximal degree in co-relation 26530. Up to 2772 conditions per place. [2020-02-10 23:18:26,295 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 159 transitions [2020-02-10 23:18:26,521 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 159 transitions [2020-02-10 23:18:26,521 INFO L479 AbstractCegarLoop]: Abstraction has has 78 places, 159 transitions [2020-02-10 23:18:26,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:18:38,986 INFO L129 PetriNetUnfolder]: 10693/13270 cut-off events. [2020-02-10 23:18:38,987 INFO L130 PetriNetUnfolder]: For 13248/13248 co-relation queries the response was YES. [2020-02-10 23:18:38,987 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:18:38,987 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:18:38,987 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 23:18:38,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:18:38,987 INFO L82 PathProgramCache]: Analyzing trace with hash 672178525, now seen corresponding path program 1 times [2020-02-10 23:18:38,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:18:38,988 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628911563] [2020-02-10 23:18:38,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:18:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:18:39,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:18:39,041 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628911563] [2020-02-10 23:18:39,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:18:39,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:18:39,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813483975] [2020-02-10 23:18:39,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:18:39,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:18:39,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:18:39,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:18:39,044 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 207 [2020-02-10 23:18:39,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 159 transitions. Second operand 3 states. [2020-02-10 23:18:39,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:18:39,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 207 [2020-02-10 23:18:39,044 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:18:44,763 INFO L129 PetriNetUnfolder]: 7000/8950 cut-off events. [2020-02-10 23:18:44,763 INFO L130 PetriNetUnfolder]: For 11828/11828 co-relation queries the response was YES. [2020-02-10 23:18:44,817 INFO L76 FinitePrefix]: Finished finitePrefix Result has 18480 conditions, 8950 events. 7000/8950 cut-off events. For 11828/11828 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 41445 event pairs. 592/9542 useless extension candidates. Maximal degree in co-relation 18451. Up to 1980 conditions per place. [2020-02-10 23:18:44,933 INFO L145 encePairwiseOnDemand]: 200/207 looper letters, 6 selfloop transitions, 1 changer transitions 0/153 dead transitions. [2020-02-10 23:18:44,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:18:44,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:18:44,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2020-02-10 23:18:44,936 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9581320450885669 [2020-02-10 23:18:44,936 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2020-02-10 23:18:44,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2020-02-10 23:18:44,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:18:44,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2020-02-10 23:18:44,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:18:44,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:18:44,941 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:18:44,941 INFO L178 Difference]: Start difference. First operand has 78 places, 159 transitions. Second operand 3 states and 595 transitions. [2020-02-10 23:18:44,942 INFO L206 Difference]: Finished difference. Result has 80 places, 153 transitions [2020-02-10 23:18:44,943 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=732, PETRI_PLACES=80, PETRI_TRANSITIONS=153} [2020-02-10 23:18:44,943 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 80 places, 153 transitions [2020-02-10 23:18:50,242 INFO L129 PetriNetUnfolder]: 7000/8950 cut-off events. [2020-02-10 23:18:50,242 INFO L130 PetriNetUnfolder]: For 8928/8928 co-relation queries the response was YES. [2020-02-10 23:18:50,297 INFO L76 FinitePrefix]: Finished finitePrefix Result has 17918 conditions, 8950 events. 7000/8950 cut-off events. For 8928/8928 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 37588 event pairs. 0/8950 useless extension candidates. Maximal degree in co-relation 17889. Up to 1980 conditions per place. [2020-02-10 23:18:50,298 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 153 transitions [2020-02-10 23:18:50,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 153 transitions [2020-02-10 23:18:50,412 INFO L479 AbstractCegarLoop]: Abstraction has has 80 places, 153 transitions [2020-02-10 23:18:50,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:18:55,906 INFO L129 PetriNetUnfolder]: 7000/8949 cut-off events. [2020-02-10 23:18:55,906 INFO L130 PetriNetUnfolder]: For 8928/8928 co-relation queries the response was YES. [2020-02-10 23:18:55,907 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:18:55,907 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:18:55,907 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 23:18:55,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:18:55,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1659175459, now seen corresponding path program 1 times [2020-02-10 23:18:55,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:18:55,908 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296788022] [2020-02-10 23:18:55,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:18:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:18:55,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:18:55,943 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296788022] [2020-02-10 23:18:55,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:18:55,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:18:55,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998919873] [2020-02-10 23:18:55,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:18:55,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:18:55,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:18:55,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:18:55,946 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 207 [2020-02-10 23:18:55,947 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 153 transitions. Second operand 3 states. [2020-02-10 23:18:55,947 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:18:55,947 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 207 [2020-02-10 23:18:55,947 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:18:57,159 INFO L129 PetriNetUnfolder]: 2970/4007 cut-off events. [2020-02-10 23:18:57,160 INFO L130 PetriNetUnfolder]: For 6097/6097 co-relation queries the response was YES. [2020-02-10 23:18:57,178 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8266 conditions, 4007 events. 2970/4007 cut-off events. For 6097/6097 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 18193 event pairs. 549/4556 useless extension candidates. Maximal degree in co-relation 8236. Up to 660 conditions per place. [2020-02-10 23:18:57,221 INFO L145 encePairwiseOnDemand]: 198/207 looper letters, 4 selfloop transitions, 1 changer transitions 0/145 dead transitions. [2020-02-10 23:18:57,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:18:57,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:18:57,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2020-02-10 23:18:57,223 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9581320450885669 [2020-02-10 23:18:57,223 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2020-02-10 23:18:57,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2020-02-10 23:18:57,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:18:57,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2020-02-10 23:18:57,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:18:57,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:18:57,226 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:18:57,227 INFO L178 Difference]: Start difference. First operand has 80 places, 153 transitions. Second operand 3 states and 595 transitions. [2020-02-10 23:18:57,227 INFO L206 Difference]: Finished difference. Result has 82 places, 145 transitions [2020-02-10 23:18:57,228 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=694, PETRI_PLACES=82, PETRI_TRANSITIONS=145} [2020-02-10 23:18:57,228 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 82 places, 145 transitions [2020-02-10 23:18:58,570 INFO L129 PetriNetUnfolder]: 2970/4007 cut-off events. [2020-02-10 23:18:58,571 INFO L130 PetriNetUnfolder]: For 3986/3986 co-relation queries the response was YES. [2020-02-10 23:18:58,596 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8034 conditions, 4007 events. 2970/4007 cut-off events. For 3986/3986 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 16751 event pairs. 0/4007 useless extension candidates. Maximal degree in co-relation 8004. Up to 660 conditions per place. [2020-02-10 23:18:58,596 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 145 transitions [2020-02-10 23:18:58,652 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 145 transitions [2020-02-10 23:18:58,652 INFO L479 AbstractCegarLoop]: Abstraction has has 82 places, 145 transitions [2020-02-10 23:18:58,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:18:59,961 INFO L129 PetriNetUnfolder]: 2970/4006 cut-off events. [2020-02-10 23:18:59,961 INFO L130 PetriNetUnfolder]: For 3986/3986 co-relation queries the response was YES. [2020-02-10 23:18:59,961 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:18:59,962 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:18:59,962 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 23:18:59,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:18:59,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1245434825, now seen corresponding path program 1 times [2020-02-10 23:18:59,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:18:59,962 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479517710] [2020-02-10 23:18:59,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:18:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:18:59,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:18:59,992 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479517710] [2020-02-10 23:18:59,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:18:59,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:18:59,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104113575] [2020-02-10 23:18:59,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:18:59,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:18:59,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:18:59,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:18:59,996 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 207 [2020-02-10 23:18:59,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 145 transitions. Second operand 3 states. [2020-02-10 23:18:59,997 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:18:59,997 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 207 [2020-02-10 23:18:59,997 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:19:00,825 INFO L129 PetriNetUnfolder]: 2256/3138 cut-off events. [2020-02-10 23:19:00,826 INFO L130 PetriNetUnfolder]: For 3984/3984 co-relation queries the response was YES. [2020-02-10 23:19:00,844 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6530 conditions, 3138 events. 2256/3138 cut-off events. For 3984/3984 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 14627 event pairs. 134/3272 useless extension candidates. Maximal degree in co-relation 6499. Up to 660 conditions per place. [2020-02-10 23:19:00,884 INFO L145 encePairwiseOnDemand]: 201/207 looper letters, 7 selfloop transitions, 1 changer transitions 0/140 dead transitions. [2020-02-10 23:19:00,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:19:00,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:19:00,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2020-02-10 23:19:00,886 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9581320450885669 [2020-02-10 23:19:00,886 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2020-02-10 23:19:00,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2020-02-10 23:19:00,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:19:00,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2020-02-10 23:19:00,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:19:00,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:19:00,889 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:19:00,890 INFO L178 Difference]: Start difference. First operand has 82 places, 145 transitions. Second operand 3 states and 595 transitions. [2020-02-10 23:19:00,891 INFO L206 Difference]: Finished difference. Result has 84 places, 140 transitions [2020-02-10 23:19:00,891 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=671, PETRI_PLACES=84, PETRI_TRANSITIONS=140} [2020-02-10 23:19:00,891 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 84 places, 140 transitions [2020-02-10 23:19:01,548 INFO L129 PetriNetUnfolder]: 2256/3138 cut-off events. [2020-02-10 23:19:01,549 INFO L130 PetriNetUnfolder]: For 3118/3118 co-relation queries the response was YES. [2020-02-10 23:19:01,563 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6298 conditions, 3138 events. 2256/3138 cut-off events. For 3118/3118 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 13517 event pairs. 0/3138 useless extension candidates. Maximal degree in co-relation 6267. Up to 660 conditions per place. [2020-02-10 23:19:01,563 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 140 transitions [2020-02-10 23:19:01,605 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 140 transitions [2020-02-10 23:19:01,605 INFO L479 AbstractCegarLoop]: Abstraction has has 84 places, 140 transitions [2020-02-10 23:19:01,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:19:02,352 INFO L129 PetriNetUnfolder]: 2256/3137 cut-off events. [2020-02-10 23:19:02,352 INFO L130 PetriNetUnfolder]: For 3118/3118 co-relation queries the response was YES. [2020-02-10 23:19:02,352 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:19:02,353 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:19:02,353 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 23:19:02,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:19:02,353 INFO L82 PathProgramCache]: Analyzing trace with hash -603504081, now seen corresponding path program 1 times [2020-02-10 23:19:02,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:19:02,354 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487894233] [2020-02-10 23:19:02,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:19:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:19:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:19:02,403 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487894233] [2020-02-10 23:19:02,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:19:02,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:19:02,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712344956] [2020-02-10 23:19:02,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:19:02,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:19:02,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:19:02,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:19:02,407 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 207 [2020-02-10 23:19:02,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 140 transitions. Second operand 3 states. [2020-02-10 23:19:02,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:19:02,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 207 [2020-02-10 23:19:02,408 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:19:03,055 INFO L129 PetriNetUnfolder]: 2020/2845 cut-off events. [2020-02-10 23:19:03,055 INFO L130 PetriNetUnfolder]: For 3416/3416 co-relation queries the response was YES. [2020-02-10 23:19:03,071 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5946 conditions, 2845 events. 2020/2845 cut-off events. For 3416/3416 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 13531 event pairs. 42/2887 useless extension candidates. Maximal degree in co-relation 5914. Up to 660 conditions per place. [2020-02-10 23:19:03,105 INFO L145 encePairwiseOnDemand]: 202/207 looper letters, 8 selfloop transitions, 1 changer transitions 0/136 dead transitions. [2020-02-10 23:19:03,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:19:03,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:19:03,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2020-02-10 23:19:03,107 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9581320450885669 [2020-02-10 23:19:03,107 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2020-02-10 23:19:03,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2020-02-10 23:19:03,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:19:03,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2020-02-10 23:19:03,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:19:03,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:19:03,111 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:19:03,111 INFO L178 Difference]: Start difference. First operand has 84 places, 140 transitions. Second operand 3 states and 595 transitions. [2020-02-10 23:19:03,112 INFO L206 Difference]: Finished difference. Result has 86 places, 136 transitions [2020-02-10 23:19:03,112 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=653, PETRI_PLACES=86, PETRI_TRANSITIONS=136} [2020-02-10 23:19:03,112 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 86 places, 136 transitions [2020-02-10 23:19:03,677 INFO L129 PetriNetUnfolder]: 2020/2845 cut-off events. [2020-02-10 23:19:03,677 INFO L130 PetriNetUnfolder]: For 2826/2826 co-relation queries the response was YES. [2020-02-10 23:19:03,706 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5714 conditions, 2845 events. 2020/2845 cut-off events. For 2826/2826 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 12401 event pairs. 0/2845 useless extension candidates. Maximal degree in co-relation 5682. Up to 660 conditions per place. [2020-02-10 23:19:03,706 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 136 transitions [2020-02-10 23:19:03,752 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 136 transitions [2020-02-10 23:19:03,752 INFO L479 AbstractCegarLoop]: Abstraction has has 86 places, 136 transitions [2020-02-10 23:19:03,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:19:04,323 INFO L129 PetriNetUnfolder]: 2020/2844 cut-off events. [2020-02-10 23:19:04,323 INFO L130 PetriNetUnfolder]: For 2826/2826 co-relation queries the response was YES. [2020-02-10 23:19:04,323 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:19:04,324 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:19:04,324 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 23:19:04,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:19:04,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1815581993, now seen corresponding path program 1 times [2020-02-10 23:19:04,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:19:04,325 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969739418] [2020-02-10 23:19:04,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:19:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:19:04,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:19:04,364 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969739418] [2020-02-10 23:19:04,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:19:04,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:19:04,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265228570] [2020-02-10 23:19:04,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:19:04,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:19:04,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:19:04,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:19:04,367 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 207 [2020-02-10 23:19:04,372 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 136 transitions. Second operand 3 states. [2020-02-10 23:19:04,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:19:04,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 207 [2020-02-10 23:19:04,373 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:19:04,497 INFO L129 PetriNetUnfolder]: 525/854 cut-off events. [2020-02-10 23:19:04,498 INFO L130 PetriNetUnfolder]: For 1483/1483 co-relation queries the response was YES. [2020-02-10 23:19:04,503 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1801 conditions, 854 events. 525/854 cut-off events. For 1483/1483 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3689 event pairs. 171/1025 useless extension candidates. Maximal degree in co-relation 1768. Up to 165 conditions per place. [2020-02-10 23:19:04,512 INFO L145 encePairwiseOnDemand]: 197/207 looper letters, 3 selfloop transitions, 1 changer transitions 0/127 dead transitions. [2020-02-10 23:19:04,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:19:04,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:19:04,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2020-02-10 23:19:04,515 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9581320450885669 [2020-02-10 23:19:04,515 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2020-02-10 23:19:04,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2020-02-10 23:19:04,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:19:04,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2020-02-10 23:19:04,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:19:04,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:19:04,519 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:19:04,519 INFO L178 Difference]: Start difference. First operand has 86 places, 136 transitions. Second operand 3 states and 595 transitions. [2020-02-10 23:19:04,520 INFO L206 Difference]: Finished difference. Result has 88 places, 127 transitions [2020-02-10 23:19:04,520 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=610, PETRI_PLACES=88, PETRI_TRANSITIONS=127} [2020-02-10 23:19:04,521 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 88 places, 127 transitions [2020-02-10 23:19:04,607 INFO L129 PetriNetUnfolder]: 525/854 cut-off events. [2020-02-10 23:19:04,607 INFO L130 PetriNetUnfolder]: For 836/836 co-relation queries the response was YES. [2020-02-10 23:19:04,612 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1734 conditions, 854 events. 525/854 cut-off events. For 836/836 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3456 event pairs. 0/854 useless extension candidates. Maximal degree in co-relation 1701. Up to 165 conditions per place. [2020-02-10 23:19:04,612 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 127 transitions [2020-02-10 23:19:04,622 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 127 transitions [2020-02-10 23:19:04,622 INFO L479 AbstractCegarLoop]: Abstraction has has 88 places, 127 transitions [2020-02-10 23:19:04,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:19:04,702 INFO L129 PetriNetUnfolder]: 525/853 cut-off events. [2020-02-10 23:19:04,702 INFO L130 PetriNetUnfolder]: For 836/836 co-relation queries the response was YES. [2020-02-10 23:19:04,702 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:19:04,702 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:19:04,703 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 23:19:04,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:19:04,703 INFO L82 PathProgramCache]: Analyzing trace with hash -211322695, now seen corresponding path program 1 times [2020-02-10 23:19:04,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:19:04,704 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386557966] [2020-02-10 23:19:04,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:19:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:19:04,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:19:04,751 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386557966] [2020-02-10 23:19:04,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:19:04,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:19:04,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378582784] [2020-02-10 23:19:04,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:19:04,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:19:04,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:19:04,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:19:04,753 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 207 [2020-02-10 23:19:04,754 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 127 transitions. Second operand 3 states. [2020-02-10 23:19:04,755 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:19:04,755 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 207 [2020-02-10 23:19:04,755 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:19:04,929 INFO L129 PetriNetUnfolder]: 509/833 cut-off events. [2020-02-10 23:19:04,929 INFO L130 PetriNetUnfolder]: For 965/965 co-relation queries the response was YES. [2020-02-10 23:19:04,935 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1761 conditions, 833 events. 509/833 cut-off events. For 965/965 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3631 event pairs. 5/838 useless extension candidates. Maximal degree in co-relation 1726. Up to 165 conditions per place. [2020-02-10 23:19:04,946 INFO L145 encePairwiseOnDemand]: 204/207 looper letters, 10 selfloop transitions, 1 changer transitions 0/125 dead transitions. [2020-02-10 23:19:04,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:19:04,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:19:04,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2020-02-10 23:19:04,948 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9581320450885669 [2020-02-10 23:19:04,948 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2020-02-10 23:19:04,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2020-02-10 23:19:04,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:19:04,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2020-02-10 23:19:04,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:19:04,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:19:04,950 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:19:04,950 INFO L178 Difference]: Start difference. First operand has 88 places, 127 transitions. Second operand 3 states and 595 transitions. [2020-02-10 23:19:04,951 INFO L206 Difference]: Finished difference. Result has 90 places, 125 transitions [2020-02-10 23:19:04,951 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=602, PETRI_PLACES=90, PETRI_TRANSITIONS=125} [2020-02-10 23:19:04,952 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 90 places, 125 transitions [2020-02-10 23:19:05,037 INFO L129 PetriNetUnfolder]: 509/833 cut-off events. [2020-02-10 23:19:05,037 INFO L130 PetriNetUnfolder]: For 816/816 co-relation queries the response was YES. [2020-02-10 23:19:05,042 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1694 conditions, 833 events. 509/833 cut-off events. For 816/816 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3377 event pairs. 0/833 useless extension candidates. Maximal degree in co-relation 1663. Up to 165 conditions per place. [2020-02-10 23:19:05,042 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 125 transitions [2020-02-10 23:19:05,051 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 125 transitions [2020-02-10 23:19:05,051 INFO L479 AbstractCegarLoop]: Abstraction has has 90 places, 125 transitions [2020-02-10 23:19:05,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:19:05,128 INFO L129 PetriNetUnfolder]: 509/832 cut-off events. [2020-02-10 23:19:05,128 INFO L130 PetriNetUnfolder]: For 816/816 co-relation queries the response was YES. [2020-02-10 23:19:05,128 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:19:05,128 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:19:05,129 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 23:19:05,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:19:05,129 INFO L82 PathProgramCache]: Analyzing trace with hash 273579401, now seen corresponding path program 1 times [2020-02-10 23:19:05,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:19:05,129 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104876624] [2020-02-10 23:19:05,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:19:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:19:05,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:19:05,154 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104876624] [2020-02-10 23:19:05,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:19:05,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:19:05,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863689474] [2020-02-10 23:19:05,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:19:05,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:19:05,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:19:05,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:19:05,156 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 207 [2020-02-10 23:19:05,156 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 125 transitions. Second operand 3 states. [2020-02-10 23:19:05,156 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:19:05,156 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 207 [2020-02-10 23:19:05,156 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:19:05,195 INFO L129 PetriNetUnfolder]: 68/172 cut-off events. [2020-02-10 23:19:05,195 INFO L130 PetriNetUnfolder]: For 348/348 co-relation queries the response was YES. [2020-02-10 23:19:05,196 INFO L76 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 172 events. 68/172 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 517 event pairs. 56/228 useless extension candidates. Maximal degree in co-relation 354. Up to 22 conditions per place. [2020-02-10 23:19:05,199 INFO L145 encePairwiseOnDemand]: 196/207 looper letters, 2 selfloop transitions, 1 changer transitions 0/115 dead transitions. [2020-02-10 23:19:05,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:19:05,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:19:05,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2020-02-10 23:19:05,201 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9581320450885669 [2020-02-10 23:19:05,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2020-02-10 23:19:05,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2020-02-10 23:19:05,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:19:05,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2020-02-10 23:19:05,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:19:05,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:19:05,205 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:19:05,205 INFO L178 Difference]: Start difference. First operand has 90 places, 125 transitions. Second operand 3 states and 595 transitions. [2020-02-10 23:19:05,206 INFO L206 Difference]: Finished difference. Result has 92 places, 115 transitions [2020-02-10 23:19:05,206 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=554, PETRI_PLACES=92, PETRI_TRANSITIONS=115} [2020-02-10 23:19:05,206 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 92 places, 115 transitions [2020-02-10 23:19:05,224 INFO L129 PetriNetUnfolder]: 68/172 cut-off events. [2020-02-10 23:19:05,225 INFO L130 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2020-02-10 23:19:05,227 INFO L76 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 172 events. 68/172 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 494 event pairs. 0/172 useless extension candidates. Maximal degree in co-relation 342. Up to 22 conditions per place. [2020-02-10 23:19:05,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 115 transitions [2020-02-10 23:19:05,231 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 115 transitions [2020-02-10 23:19:05,231 INFO L479 AbstractCegarLoop]: Abstraction has has 92 places, 115 transitions [2020-02-10 23:19:05,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:19:05,250 INFO L129 PetriNetUnfolder]: 68/171 cut-off events. [2020-02-10 23:19:05,250 INFO L130 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2020-02-10 23:19:05,250 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:19:05,250 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:19:05,251 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 23:19:05,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:19:05,251 INFO L82 PathProgramCache]: Analyzing trace with hash 220168813, now seen corresponding path program 1 times [2020-02-10 23:19:05,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:19:05,251 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574189329] [2020-02-10 23:19:05,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:19:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:19:05,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:19:05,278 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574189329] [2020-02-10 23:19:05,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:19:05,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:19:05,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803387591] [2020-02-10 23:19:05,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:19:05,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:19:05,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:19:05,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:19:05,281 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 207 [2020-02-10 23:19:05,282 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 115 transitions. Second operand 3 states. [2020-02-10 23:19:05,282 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:19:05,282 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 207 [2020-02-10 23:19:05,282 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:19:05,302 INFO L129 PetriNetUnfolder]: 1/39 cut-off events. [2020-02-10 23:19:05,302 INFO L130 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2020-02-10 23:19:05,303 INFO L76 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 39 events. 1/39 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs. 12/51 useless extension candidates. Maximal degree in co-relation 78. Up to 3 conditions per place. [2020-02-10 23:19:05,304 INFO L145 encePairwiseOnDemand]: 195/207 looper letters, 1 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2020-02-10 23:19:05,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:19:05,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:19:05,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2020-02-10 23:19:05,307 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9581320450885669 [2020-02-10 23:19:05,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2020-02-10 23:19:05,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2020-02-10 23:19:05,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:19:05,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2020-02-10 23:19:05,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:19:05,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:19:05,310 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:19:05,310 INFO L178 Difference]: Start difference. First operand has 92 places, 115 transitions. Second operand 3 states and 595 transitions. [2020-02-10 23:19:05,310 INFO L206 Difference]: Finished difference. Result has 94 places, 39 transitions [2020-02-10 23:19:05,311 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=94, PETRI_TRANSITIONS=39} [2020-02-10 23:19:05,312 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 94 places, 39 transitions [2020-02-10 23:19:05,317 INFO L129 PetriNetUnfolder]: 1/39 cut-off events. [2020-02-10 23:19:05,317 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2020-02-10 23:19:05,318 INFO L76 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 39 events. 1/39 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs. 0/39 useless extension candidates. Maximal degree in co-relation 77. Up to 3 conditions per place. [2020-02-10 23:19:05,318 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 39 transitions [2020-02-10 23:19:05,319 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 39 transitions [2020-02-10 23:19:05,320 INFO L479 AbstractCegarLoop]: Abstraction has has 94 places, 39 transitions [2020-02-10 23:19:05,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:19:05,325 INFO L129 PetriNetUnfolder]: 1/38 cut-off events. [2020-02-10 23:19:05,325 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2020-02-10 23:19:05,325 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:19:05,326 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:19:05,326 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 23:19:05,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:19:05,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1666317731, now seen corresponding path program 1 times [2020-02-10 23:19:05,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:19:05,327 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631689932] [2020-02-10 23:19:05,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:19:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:19:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:19:05,364 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631689932] [2020-02-10 23:19:05,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:19:05,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:19:05,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112178289] [2020-02-10 23:19:05,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:19:05,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:19:05,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:19:05,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:19:05,366 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 207 [2020-02-10 23:19:05,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 39 transitions. Second operand 3 states. [2020-02-10 23:19:05,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:19:05,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 207 [2020-02-10 23:19:05,367 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:19:05,375 INFO L129 PetriNetUnfolder]: 0/37 cut-off events. [2020-02-10 23:19:05,375 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2020-02-10 23:19:05,376 INFO L76 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 37 events. 0/37 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs. 1/38 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2020-02-10 23:19:05,377 INFO L145 encePairwiseOnDemand]: 205/207 looper letters, 1 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2020-02-10 23:19:05,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:19:05,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:19:05,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 585 transitions. [2020-02-10 23:19:05,380 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9420289855072463 [2020-02-10 23:19:05,380 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 585 transitions. [2020-02-10 23:19:05,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 585 transitions. [2020-02-10 23:19:05,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:19:05,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 585 transitions. [2020-02-10 23:19:05,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:19:05,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:19:05,383 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:19:05,383 INFO L178 Difference]: Start difference. First operand has 94 places, 39 transitions. Second operand 3 states and 585 transitions. [2020-02-10 23:19:05,383 INFO L206 Difference]: Finished difference. Result has 96 places, 37 transitions [2020-02-10 23:19:05,384 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=96, PETRI_TRANSITIONS=37} [2020-02-10 23:19:05,384 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 96 places, 37 transitions [2020-02-10 23:19:05,389 INFO L129 PetriNetUnfolder]: 0/37 cut-off events. [2020-02-10 23:19:05,389 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2020-02-10 23:19:05,390 INFO L76 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 37 events. 0/37 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs. 0/37 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2020-02-10 23:19:05,390 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 37 transitions [2020-02-10 23:19:05,391 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 37 transitions [2020-02-10 23:19:05,392 INFO L479 AbstractCegarLoop]: Abstraction has has 96 places, 37 transitions [2020-02-10 23:19:05,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:19:05,397 INFO L129 PetriNetUnfolder]: 0/36 cut-off events. [2020-02-10 23:19:05,397 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2020-02-10 23:19:05,397 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:19:05,398 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:19:05,398 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 23:19:05,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:19:05,398 INFO L82 PathProgramCache]: Analyzing trace with hash 957070245, now seen corresponding path program 1 times [2020-02-10 23:19:05,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:19:05,399 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798161952] [2020-02-10 23:19:05,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:19:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:19:05,920 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 29 [2020-02-10 23:19:06,113 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 33 [2020-02-10 23:19:06,314 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 36 [2020-02-10 23:19:06,523 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 39 [2020-02-10 23:19:06,700 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 40 [2020-02-10 23:19:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:19:06,717 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798161952] [2020-02-10 23:19:06,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:19:06,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-02-10 23:19:06,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774008949] [2020-02-10 23:19:06,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-02-10 23:19:06,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:19:06,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-02-10 23:19:06,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-02-10 23:19:06,721 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 207 [2020-02-10 23:19:06,722 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 37 transitions. Second operand 14 states. [2020-02-10 23:19:06,722 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:19:06,722 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 207 [2020-02-10 23:19:06,722 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:19:59,237 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-02-10 23:20:04,346 INFO L129 PetriNetUnfolder]: 27651/34833 cut-off events. [2020-02-10 23:20:04,346 INFO L130 PetriNetUnfolder]: For 1028/1028 co-relation queries the response was YES. [2020-02-10 23:20:04,589 INFO L76 FinitePrefix]: Finished finitePrefix Result has 69714 conditions, 34833 events. 27651/34833 cut-off events. For 1028/1028 co-relation queries the response was YES. Maximal size of possible extension queue 1895. Compared 171005 event pairs. 1/34211 useless extension candidates. Maximal degree in co-relation 69682. Up to 12289 conditions per place. [2020-02-10 23:20:05,066 INFO L145 encePairwiseOnDemand]: 194/207 looper letters, 77 selfloop transitions, 11 changer transitions 1/113 dead transitions. [2020-02-10 23:20:05,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-02-10 23:20:05,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-02-10 23:20:05,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2624 transitions. [2020-02-10 23:20:05,073 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9054520358868184 [2020-02-10 23:20:05,073 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2624 transitions. [2020-02-10 23:20:05,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2624 transitions. [2020-02-10 23:20:05,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:20:05,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2624 transitions. [2020-02-10 23:20:05,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 15 states. [2020-02-10 23:20:05,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 15 states. [2020-02-10 23:20:05,084 INFO L81 ComplementDD]: Finished complementDD. Result 15 states. [2020-02-10 23:20:05,084 INFO L178 Difference]: Start difference. First operand has 96 places, 37 transitions. Second operand 14 states and 2624 transitions. [2020-02-10 23:20:05,085 INFO L206 Difference]: Finished difference. Result has 121 places, 47 transitions [2020-02-10 23:20:05,085 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=255, PETRI_PLACES=121, PETRI_TRANSITIONS=47} [2020-02-10 23:20:05,085 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 121 places, 47 transitions [2020-02-10 23:20:05,105 INFO L129 PetriNetUnfolder]: 0/153 cut-off events. [2020-02-10 23:20:05,105 INFO L130 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2020-02-10 23:20:05,106 INFO L76 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 153 events. 0/153 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 731 event pairs. 0/135 useless extension candidates. Maximal degree in co-relation 342. Up to 13 conditions per place. [2020-02-10 23:20:05,106 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 47 transitions [2020-02-10 23:20:05,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 47 transitions [2020-02-10 23:20:05,109 INFO L479 AbstractCegarLoop]: Abstraction has has 120 places, 47 transitions [2020-02-10 23:20:05,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-02-10 23:20:05,123 INFO L129 PetriNetUnfolder]: 0/142 cut-off events. [2020-02-10 23:20:05,123 INFO L130 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2020-02-10 23:20:05,123 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:20:05,124 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:20:05,124 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 23:20:05,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:20:05,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1795431047, now seen corresponding path program 2 times [2020-02-10 23:20:05,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:20:05,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409428246] [2020-02-10 23:20:05,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:20:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:20:05,798 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-02-10 23:20:05,938 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 36 [2020-02-10 23:20:06,137 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2020-02-10 23:20:06,324 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 43 [2020-02-10 23:20:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:20:06,341 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409428246] [2020-02-10 23:20:06,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:20:06,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-02-10 23:20:06,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061852825] [2020-02-10 23:20:06,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-02-10 23:20:06,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:20:06,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-02-10 23:20:06,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-02-10 23:20:06,346 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 207 [2020-02-10 23:20:06,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 47 transitions. Second operand 14 states. [2020-02-10 23:20:06,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:20:06,348 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 207 [2020-02-10 23:20:06,348 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:22:47,843 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-02-10 23:22:54,877 INFO L129 PetriNetUnfolder]: 36939/47034 cut-off events. [2020-02-10 23:22:54,877 INFO L130 PetriNetUnfolder]: For 56958/59288 co-relation queries the response was YES. [2020-02-10 23:22:55,331 INFO L76 FinitePrefix]: Finished finitePrefix Result has 143262 conditions, 47034 events. 36939/47034 cut-off events. For 56958/59288 co-relation queries the response was YES. Maximal size of possible extension queue 2459. Compared 250652 event pairs. 1/46413 useless extension candidates. Maximal degree in co-relation 143217. Up to 16906 conditions per place. [2020-02-10 23:22:56,198 INFO L145 encePairwiseOnDemand]: 194/207 looper letters, 118 selfloop transitions, 14 changer transitions 1/157 dead transitions. [2020-02-10 23:22:56,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-02-10 23:22:56,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-02-10 23:22:56,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2624 transitions. [2020-02-10 23:22:56,204 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9054520358868184 [2020-02-10 23:22:56,204 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2624 transitions. [2020-02-10 23:22:56,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2624 transitions. [2020-02-10 23:22:56,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:22:56,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2624 transitions. [2020-02-10 23:22:56,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 15 states. [2020-02-10 23:22:56,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 15 states. [2020-02-10 23:22:56,214 INFO L81 ComplementDD]: Finished complementDD. Result 15 states. [2020-02-10 23:22:56,215 INFO L178 Difference]: Start difference. First operand has 120 places, 47 transitions. Second operand 14 states and 2624 transitions. [2020-02-10 23:22:56,216 INFO L206 Difference]: Finished difference. Result has 145 places, 60 transitions [2020-02-10 23:22:56,216 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=401, PETRI_PLACES=145, PETRI_TRANSITIONS=60} [2020-02-10 23:22:56,216 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 145 places, 60 transitions [2020-02-10 23:22:56,293 INFO L129 PetriNetUnfolder]: 0/448 cut-off events. [2020-02-10 23:22:56,293 INFO L130 PetriNetUnfolder]: For 550/565 co-relation queries the response was YES. [2020-02-10 23:22:56,297 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 448 events. 0/448 cut-off events. For 550/565 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3882 event pairs. 0/384 useless extension candidates. Maximal degree in co-relation 1071. Up to 48 conditions per place. [2020-02-10 23:22:56,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 60 transitions [2020-02-10 23:22:56,304 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 60 transitions [2020-02-10 23:22:56,305 INFO L479 AbstractCegarLoop]: Abstraction has has 144 places, 60 transitions [2020-02-10 23:22:56,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-02-10 23:22:56,360 INFO L129 PetriNetUnfolder]: 0/402 cut-off events. [2020-02-10 23:22:56,360 INFO L130 PetriNetUnfolder]: For 550/565 co-relation queries the response was YES. [2020-02-10 23:22:56,360 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:22:56,361 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:22:56,361 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 23:22:56,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:22:56,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1869332639, now seen corresponding path program 3 times [2020-02-10 23:22:56,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:22:56,361 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402252293] [2020-02-10 23:22:56,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:22:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:22:56,934 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 29 [2020-02-10 23:22:57,345 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2020-02-10 23:22:57,561 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 43 [2020-02-10 23:22:57,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:22:57,574 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402252293] [2020-02-10 23:22:57,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:22:57,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-02-10 23:22:57,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377070277] [2020-02-10 23:22:57,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-02-10 23:22:57,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:22:57,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-02-10 23:22:57,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-02-10 23:22:57,577 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 207 [2020-02-10 23:22:57,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 60 transitions. Second operand 14 states. [2020-02-10 23:22:57,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:22:57,579 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 207 [2020-02-10 23:22:57,579 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:26:52,952 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-02-10 23:27:00,936 INFO L129 PetriNetUnfolder]: 36937/47068 cut-off events. [2020-02-10 23:27:00,936 INFO L130 PetriNetUnfolder]: For 157771/160101 co-relation queries the response was YES. [2020-02-10 23:27:01,626 INFO L76 FinitePrefix]: Finished finitePrefix Result has 190135 conditions, 47068 events. 36937/47068 cut-off events. For 157771/160101 co-relation queries the response was YES. Maximal size of possible extension queue 2459. Compared 251636 event pairs. 1/46447 useless extension candidates. Maximal degree in co-relation 190077. Up to 16906 conditions per place. [2020-02-10 23:27:02,659 INFO L145 encePairwiseOnDemand]: 194/207 looper letters, 118 selfloop transitions, 15 changer transitions 1/158 dead transitions. [2020-02-10 23:27:02,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-02-10 23:27:02,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-02-10 23:27:02,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2624 transitions. [2020-02-10 23:27:02,666 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9054520358868184 [2020-02-10 23:27:02,666 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2624 transitions. [2020-02-10 23:27:02,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2624 transitions. [2020-02-10 23:27:02,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:27:02,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2624 transitions. [2020-02-10 23:27:02,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 15 states. [2020-02-10 23:27:02,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 15 states. [2020-02-10 23:27:02,676 INFO L81 ComplementDD]: Finished complementDD. Result 15 states. [2020-02-10 23:27:02,676 INFO L178 Difference]: Start difference. First operand has 144 places, 60 transitions. Second operand 14 states and 2624 transitions. [2020-02-10 23:27:02,677 INFO L206 Difference]: Finished difference. Result has 161 places, 62 transitions [2020-02-10 23:27:02,677 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=460, PETRI_PLACES=161, PETRI_TRANSITIONS=62} [2020-02-10 23:27:02,677 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 161 places, 62 transitions [2020-02-10 23:27:02,746 INFO L129 PetriNetUnfolder]: 0/485 cut-off events. [2020-02-10 23:27:02,746 INFO L130 PetriNetUnfolder]: For 749/766 co-relation queries the response was YES. [2020-02-10 23:27:02,750 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 485 events. 0/485 cut-off events. For 749/766 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4294 event pairs. 0/419 useless extension candidates. Maximal degree in co-relation 1248. Up to 50 conditions per place. [2020-02-10 23:27:02,750 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 62 transitions [2020-02-10 23:27:02,758 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 62 transitions [2020-02-10 23:27:02,759 INFO L479 AbstractCegarLoop]: Abstraction has has 160 places, 62 transitions [2020-02-10 23:27:02,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-02-10 23:27:02,817 INFO L129 PetriNetUnfolder]: 0/437 cut-off events. [2020-02-10 23:27:02,817 INFO L130 PetriNetUnfolder]: For 753/767 co-relation queries the response was YES. [2020-02-10 23:27:02,817 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:27:02,818 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:27:02,818 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 23:27:02,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:27:02,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1903856841, now seen corresponding path program 4 times [2020-02-10 23:27:02,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:27:02,818 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215826090] [2020-02-10 23:27:02,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:27:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:27:03,511 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-02-10 23:27:03,676 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 40 [2020-02-10 23:27:03,845 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 41 [2020-02-10 23:27:03,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:27:03,856 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215826090] [2020-02-10 23:27:03,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:27:03,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-02-10 23:27:03,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25471171] [2020-02-10 23:27:03,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-02-10 23:27:03,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:27:03,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-02-10 23:27:03,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-02-10 23:27:03,860 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 207 [2020-02-10 23:27:03,862 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 62 transitions. Second operand 14 states. [2020-02-10 23:27:03,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:27:03,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 207 [2020-02-10 23:27:03,863 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2020-02-10 23:28:11,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:28:11,727 WARN L544 AbstractCegarLoop]: Verification canceled [2020-02-10 23:28:11,730 WARN L227 ceAbstractionStarter]: Timeout [2020-02-10 23:28:11,730 INFO L202 PluginConnector]: Adding new model example_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 11:28:11 BasicIcfg [2020-02-10 23:28:11,730 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-02-10 23:28:11,732 INFO L168 Benchmark]: Toolchain (without parser) took 836240.78 ms. Allocated memory was 145.2 MB in the beginning and 2.9 GB in the end (delta: 2.8 GB). Free memory was 120.4 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2020-02-10 23:28:11,733 INFO L168 Benchmark]: Boogie PL CUP Parser took 2.76 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-02-10 23:28:11,733 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.99 ms. Allocated memory is still 145.2 MB. Free memory was 120.2 MB in the beginning and 118.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-02-10 23:28:11,734 INFO L168 Benchmark]: Boogie Preprocessor took 29.98 ms. Allocated memory is still 145.2 MB. Free memory was 118.2 MB in the beginning and 117.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-02-10 23:28:11,735 INFO L168 Benchmark]: RCFGBuilder took 422.50 ms. Allocated memory is still 145.2 MB. Free memory was 117.1 MB in the beginning and 101.2 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2020-02-10 23:28:11,736 INFO L168 Benchmark]: TraceAbstraction took 835739.73 ms. Allocated memory was 145.2 MB in the beginning and 2.9 GB in the end (delta: 2.8 GB). Free memory was 100.8 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2020-02-10 23:28:11,739 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 2.76 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 40.99 ms. Allocated memory is still 145.2 MB. Free memory was 120.2 MB in the beginning and 118.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.98 ms. Allocated memory is still 145.2 MB. Free memory was 118.2 MB in the beginning and 117.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 422.50 ms. Allocated memory is still 145.2 MB. Free memory was 117.1 MB in the beginning and 101.2 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 835739.73 ms. Allocated memory was 145.2 MB in the beginning and 2.9 GB in the end (delta: 2.8 GB). Free memory was 100.8 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 91.9s, 86 ProgramPointsBefore, 74 ProgramPointsAfterwards, 181 TransitionsBefore, 169 TransitionsAfterwards, 6600 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1716 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1782 CheckedPairsTotal, 12 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 37]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 37). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (14states, 181/207 universal loopers) in iteration 15,while PetriNetUnfolder was constructing finite prefix that currently has 102701 conditions, 23859 events (19877/23858 cut-off events. For 117539/119869 co-relation queries the response was YES. Maximal size of possible extension queue 3313. Compared 118635 event pairs. 0/26575 useless extension candidates. Maximal degree in co-relation 102645. Up to 12532 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. Result: TIMEOUT, OverallTime: 835.3s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 578.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 138.5s, HoareTripleCheckerStatistics: 302 SDtfs, 332 SDslu, 259 SDs, 0 SdLazy, 477 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 35.9s AutomataMinimizationTime, 14 MinimizatonAttempts, 3 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 555 NumberOfCodeBlocks, 555 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 540 ConstructedInterpolants, 0 QuantifiedInterpolants, 230112 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown