/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-SemanticLbe.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_12.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-abd8500 [2020-01-16 21:04:10,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-01-16 21:04:10,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-01-16 21:04:10,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-01-16 21:04:10,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-01-16 21:04:10,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-01-16 21:04:10,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-01-16 21:04:10,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-01-16 21:04:10,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-01-16 21:04:10,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-01-16 21:04:10,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-01-16 21:04:10,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-01-16 21:04:10,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-01-16 21:04:10,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-01-16 21:04:10,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-01-16 21:04:10,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-01-16 21:04:10,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-01-16 21:04:10,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-01-16 21:04:10,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-01-16 21:04:10,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-01-16 21:04:10,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-01-16 21:04:10,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-01-16 21:04:10,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-01-16 21:04:10,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-01-16 21:04:10,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-01-16 21:04:10,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-01-16 21:04:10,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-01-16 21:04:10,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-01-16 21:04:10,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-01-16 21:04:10,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-01-16 21:04:10,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-01-16 21:04:10,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-01-16 21:04:10,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-01-16 21:04:10,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-01-16 21:04:10,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-01-16 21:04:10,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-01-16 21:04:10,313 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-SemanticLbe.epf [2020-01-16 21:04:10,329 INFO L113 SettingsManager]: Loading preferences was successful [2020-01-16 21:04:10,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-01-16 21:04:10,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-01-16 21:04:10,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-01-16 21:04:10,331 INFO L138 SettingsManager]: * Use SBE=true [2020-01-16 21:04:10,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-01-16 21:04:10,332 INFO L138 SettingsManager]: * sizeof long=4 [2020-01-16 21:04:10,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-01-16 21:04:10,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-01-16 21:04:10,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-01-16 21:04:10,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-01-16 21:04:10,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-01-16 21:04:10,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-01-16 21:04:10,333 INFO L138 SettingsManager]: * sizeof long double=12 [2020-01-16 21:04:10,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-01-16 21:04:10,333 INFO L138 SettingsManager]: * Use constant arrays=true [2020-01-16 21:04:10,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-01-16 21:04:10,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-01-16 21:04:10,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-01-16 21:04:10,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-01-16 21:04:10,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-01-16 21:04:10,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 21:04:10,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-01-16 21:04:10,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-01-16 21:04:10,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-01-16 21:04:10,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-01-16 21:04:10,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-01-16 21:04:10,336 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-01-16 21:04:10,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-01-16 21:04:10,645 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-01-16 21:04:10,659 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-01-16 21:04:10,662 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-01-16 21:04:10,663 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-01-16 21:04:10,664 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-01-16 21:04:10,665 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_12.bpl [2020-01-16 21:04:10,665 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_12.bpl' [2020-01-16 21:04:10,699 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-01-16 21:04:10,701 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-01-16 21:04:10,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-01-16 21:04:10,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-01-16 21:04:10,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-01-16 21:04:10,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:04:10" (1/1) ... [2020-01-16 21:04:10,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:04:10" (1/1) ... [2020-01-16 21:04:10,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-01-16 21:04:10,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-01-16 21:04:10,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-01-16 21:04:10,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-01-16 21:04:10,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:04:10" (1/1) ... [2020-01-16 21:04:10,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:04:10" (1/1) ... [2020-01-16 21:04:10,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:04:10" (1/1) ... [2020-01-16 21:04:10,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:04:10" (1/1) ... [2020-01-16 21:04:10,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:04:10" (1/1) ... [2020-01-16 21:04:10,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:04:10" (1/1) ... [2020-01-16 21:04:10,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:04:10" (1/1) ... [2020-01-16 21:04:10,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-01-16 21:04:10,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-01-16 21:04:10,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-01-16 21:04:10,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-01-16 21:04:10,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:04:10" (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 [2020-01-16 21:04:10,828 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-01-16 21:04:10,829 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-01-16 21:04:10,829 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-01-16 21:04:10,829 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-01-16 21:04:10,829 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-01-16 21:04:10,830 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-01-16 21:04:10,830 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-01-16 21:04:10,830 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-01-16 21:04:10,830 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-01-16 21:04:10,831 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-01-16 21:04:10,831 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-01-16 21:04:10,831 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-01-16 21:04:10,831 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-01-16 21:04:10,831 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-01-16 21:04:10,831 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-01-16 21:04:10,832 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2020-01-16 21:04:10,832 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2020-01-16 21:04:10,832 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2020-01-16 21:04:10,832 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-01-16 21:04:10,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-01-16 21:04:10,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-01-16 21:04:10,833 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-01-16 21:04:10,833 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-01-16 21:04:10,833 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-01-16 21:04:10,833 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2020-01-16 21:04:10,834 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2020-01-16 21:04:10,834 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2020-01-16 21:04:10,834 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2020-01-16 21:04:10,834 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2020-01-16 21:04:10,834 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2020-01-16 21:04:10,835 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2020-01-16 21:04:10,835 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2020-01-16 21:04:10,835 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2020-01-16 21:04:10,835 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2020-01-16 21:04:10,835 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2020-01-16 21:04:10,836 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2020-01-16 21:04:10,836 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2020-01-16 21:04:10,836 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2020-01-16 21:04:10,836 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2020-01-16 21:04:10,839 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-01-16 21:04:11,161 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-01-16 21:04:11,161 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2020-01-16 21:04:11,163 INFO L202 PluginConnector]: Adding new model example_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 09:04:11 BoogieIcfgContainer [2020-01-16 21:04:11,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-01-16 21:04:11,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-01-16 21:04:11,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-01-16 21:04:11,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-01-16 21:04:11,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 09:04:10" (1/2) ... [2020-01-16 21:04:11,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f597490 and model type example_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.01 09:04:11, skipping insertion in model container [2020-01-16 21:04:11,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 09:04:11" (2/2) ... [2020-01-16 21:04:11,172 INFO L109 eAbstractionObserver]: Analyzing ICFG example_12.bpl [2020-01-16 21:04:11,188 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-01-16 21:04:11,196 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-01-16 21:04:11,197 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-01-16 21:04:11,498 INFO L250 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-01-16 21:04:11,520 INFO L374 AbstractCegarLoop]: Interprodecural is true [2020-01-16 21:04:11,520 INFO L375 AbstractCegarLoop]: Hoare is false [2020-01-16 21:04:11,520 INFO L376 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-01-16 21:04:11,521 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-01-16 21:04:11,521 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-01-16 21:04:11,521 INFO L379 AbstractCegarLoop]: Difference is false [2020-01-16 21:04:11,521 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-01-16 21:04:11,522 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-01-16 21:04:11,542 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 195 transitions [2020-01-16 21:04:11,545 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 100 places, 195 transitions [2020-01-16 21:04:56,785 INFO L129 PetriNetUnfolder]: 20481/24615 cut-off events. [2020-01-16 21:04:56,786 INFO L130 PetriNetUnfolder]: For 24576/24576 co-relation queries the response was YES. [2020-01-16 21:04:57,053 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. [2020-01-16 21:04:57,541 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 100 places, 195 transitions [2020-01-16 21:05:41,597 INFO L129 PetriNetUnfolder]: 20481/24615 cut-off events. [2020-01-16 21:05:41,597 INFO L130 PetriNetUnfolder]: For 24576/24576 co-relation queries the response was YES. [2020-01-16 21:05:41,796 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. [2020-01-16 21:05:42,212 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 6600 [2020-01-16 21:05:42,213 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-01-16 21:05:42,556 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1782 [2020-01-16 21:05:42,556 INFO L214 etLargeBlockEncoding]: Total number of compositions: 13 [2020-01-16 21:05:42,557 INFO L162 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 91019 [2020-01-16 21:06:28,045 INFO L129 PetriNetUnfolder]: 20481/24600 cut-off events. [2020-01-16 21:06:28,045 INFO L130 PetriNetUnfolder]: For 24576/24576 co-relation queries the response was YES. [2020-01-16 21:06:28,045 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:06:28,046 INFO L210 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] [2020-01-16 21:06:28,046 INFO L426 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]=== [2020-01-16 21:06:28,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:06:28,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1450337820, now seen corresponding path program 1 times [2020-01-16 21:06:28,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:06:28,064 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147154782] [2020-01-16 21:06:28,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:06:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:06:28,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:06:28,254 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147154782] [2020-01-16 21:06:28,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:06:28,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:06:28,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531771807] [2020-01-16 21:06:28,269 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:06:28,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:06:28,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:06:28,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:06:28,293 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 208 [2020-01-16 21:06:28,297 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 182 transitions. Second operand 3 states. [2020-01-16 21:06:28,297 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:06:28,297 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 208 [2020-01-16 21:06:28,299 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:06:44,101 INFO L129 PetriNetUnfolder]: 11153/13788 cut-off events. [2020-01-16 21:06:44,101 INFO L130 PetriNetUnfolder]: For 19345/19345 co-relation queries the response was YES. [2020-01-16 21:06:44,173 INFO L76 FinitePrefix]: Finished finitePrefix Result has 28150 conditions, 13788 events. 11153/13788 cut-off events. For 19345/19345 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 61255 event pairs. 1486/15273 useless extension candidates. Maximal degree in co-relation 22552. Up to 2772 conditions per place. [2020-01-16 21:06:44,175 INFO L123 encePairwiseOnDemand]: 200/208 looper letters, 5 selfloop transitions, 8 changer transitions [2020-01-16 21:06:44,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:06:44,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:06:44,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2020-01-16 21:06:44,191 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9583333333333334 [2020-01-16 21:06:44,192 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2020-01-16 21:06:44,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2020-01-16 21:06:44,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:06:44,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2020-01-16 21:06:44,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:06:44,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:06:44,209 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:06:44,211 INFO L174 Difference]: Start difference. First operand has 86 places, 182 transitions. Second operand 3 states and 598 transitions. [2020-01-16 21:06:44,213 INFO L199 Difference]: Finished difference. Result has 88 places, 163 transitions [2020-01-16 21:06:44,215 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=774, PETRI_PLACES=88, PETRI_TRANSITIONS=163} [2020-01-16 21:06:44,217 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 88 places, 163 transitions [2020-01-16 21:06:44,217 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 88 places, 163 transitions [2020-01-16 21:06:57,831 INFO L129 PetriNetUnfolder]: 11153/13788 cut-off events. [2020-01-16 21:06:57,831 INFO L130 PetriNetUnfolder]: For 13763/13763 co-relation queries the response was YES. [2020-01-16 21:06:58,062 INFO L76 FinitePrefix]: Finished finitePrefix Result has 27588 conditions, 13788 events. 11153/13788 cut-off events. For 13763/13763 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 57059 event pairs. 0/13787 useless extension candidates. Maximal degree in co-relation 27549. Up to 2772 conditions per place. [2020-01-16 21:06:58,068 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 13 of 88 places, 0 of 163 transitions, 1 of 774 flow. [2020-01-16 21:06:58,069 INFO L478 AbstractCegarLoop]: Abstraction has has 75 places, 163 transitions [2020-01-16 21:06:58,069 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:07:12,252 INFO L129 PetriNetUnfolder]: 11153/13786 cut-off events. [2020-01-16 21:07:12,253 INFO L130 PetriNetUnfolder]: For 13763/13763 co-relation queries the response was YES. [2020-01-16 21:07:12,253 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:07:12,253 INFO L210 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] [2020-01-16 21:07:12,253 INFO L426 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]=== [2020-01-16 21:07:12,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:07:12,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1028048272, now seen corresponding path program 1 times [2020-01-16 21:07:12,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:07:12,254 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756833547] [2020-01-16 21:07:12,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:07:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:07:12,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:07:12,330 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756833547] [2020-01-16 21:07:12,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:07:12,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:07:12,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997114321] [2020-01-16 21:07:12,334 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:07:12,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:07:12,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:07:12,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:07:12,337 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 208 [2020-01-16 21:07:12,337 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 163 transitions. Second operand 3 states. [2020-01-16 21:07:12,339 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:07:12,340 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 208 [2020-01-16 21:07:12,342 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:07:25,105 INFO L129 PetriNetUnfolder]: 10693/13272 cut-off events. [2020-01-16 21:07:25,105 INFO L130 PetriNetUnfolder]: For 15704/15704 co-relation queries the response was YES. [2020-01-16 21:07:25,174 INFO L76 FinitePrefix]: Finished finitePrefix Result has 27701 conditions, 13272 events. 10693/13272 cut-off events. For 15704/15704 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 59748 event pairs. 56/13327 useless extension candidates. Maximal degree in co-relation 22488. Up to 2772 conditions per place. [2020-01-16 21:07:25,175 INFO L123 encePairwiseOnDemand]: 204/208 looper letters, 9 selfloop transitions, 4 changer transitions [2020-01-16 21:07:25,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:07:25,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:07:25,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2020-01-16 21:07:25,179 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9583333333333334 [2020-01-16 21:07:25,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2020-01-16 21:07:25,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2020-01-16 21:07:25,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:07:25,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2020-01-16 21:07:25,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:07:25,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:07:25,184 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:07:25,184 INFO L174 Difference]: Start difference. First operand has 75 places, 163 transitions. Second operand 3 states and 598 transitions. [2020-01-16 21:07:25,185 INFO L199 Difference]: Finished difference. Result has 77 places, 160 transitions [2020-01-16 21:07:25,186 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=760, PETRI_PLACES=77, PETRI_TRANSITIONS=160} [2020-01-16 21:07:25,187 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 77 places, 160 transitions [2020-01-16 21:07:25,187 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 77 places, 160 transitions [2020-01-16 21:07:37,860 INFO L129 PetriNetUnfolder]: 10693/13272 cut-off events. [2020-01-16 21:07:37,860 INFO L130 PetriNetUnfolder]: For 13248/13248 co-relation queries the response was YES. [2020-01-16 21:07:37,934 INFO L76 FinitePrefix]: Finished finitePrefix Result has 26557 conditions, 13272 events. 10693/13272 cut-off events. For 13248/13248 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 54668 event pairs. 0/13271 useless extension candidates. Maximal degree in co-relation 26529. Up to 2772 conditions per place. [2020-01-16 21:07:37,937 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 77 places, 0 of 160 transitions, 1 of 760 flow. [2020-01-16 21:07:37,938 INFO L478 AbstractCegarLoop]: Abstraction has has 76 places, 160 transitions [2020-01-16 21:07:37,938 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:07:50,038 INFO L129 PetriNetUnfolder]: 10693/13270 cut-off events. [2020-01-16 21:07:50,038 INFO L130 PetriNetUnfolder]: For 13248/13248 co-relation queries the response was YES. [2020-01-16 21:07:50,038 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:07:50,038 INFO L210 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] [2020-01-16 21:07:50,038 INFO L426 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]=== [2020-01-16 21:07:50,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:07:50,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1253209630, now seen corresponding path program 1 times [2020-01-16 21:07:50,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:07:50,039 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951099401] [2020-01-16 21:07:50,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:07:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:07:50,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:07:50,079 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951099401] [2020-01-16 21:07:50,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:07:50,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:07:50,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757970031] [2020-01-16 21:07:50,081 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:07:50,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:07:50,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:07:50,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:07:50,082 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 208 [2020-01-16 21:07:50,082 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 160 transitions. Second operand 3 states. [2020-01-16 21:07:50,083 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:07:50,083 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 208 [2020-01-16 21:07:50,083 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:07:57,001 INFO L129 PetriNetUnfolder]: 7000/8951 cut-off events. [2020-01-16 21:07:57,001 INFO L130 PetriNetUnfolder]: For 11828/11828 co-relation queries the response was YES. [2020-01-16 21:07:57,048 INFO L76 FinitePrefix]: Finished finitePrefix Result has 18478 conditions, 8951 events. 7000/8951 cut-off events. For 11828/11828 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 41446 event pairs. 592/9542 useless extension candidates. Maximal degree in co-relation 13264. Up to 1980 conditions per place. [2020-01-16 21:07:57,048 INFO L123 encePairwiseOnDemand]: 201/208 looper letters, 6 selfloop transitions, 7 changer transitions [2020-01-16 21:07:57,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:07:57,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:07:57,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2020-01-16 21:07:57,050 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9583333333333334 [2020-01-16 21:07:57,051 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2020-01-16 21:07:57,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2020-01-16 21:07:57,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:07:57,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2020-01-16 21:07:57,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:07:57,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:07:57,055 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:07:57,055 INFO L174 Difference]: Start difference. First operand has 76 places, 160 transitions. Second operand 3 states and 598 transitions. [2020-01-16 21:07:57,056 INFO L199 Difference]: Finished difference. Result has 78 places, 154 transitions [2020-01-16 21:07:57,056 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=731, PETRI_PLACES=78, PETRI_TRANSITIONS=154} [2020-01-16 21:07:57,057 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 78 places, 154 transitions [2020-01-16 21:07:57,057 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 78 places, 154 transitions [2020-01-16 21:08:02,957 INFO L129 PetriNetUnfolder]: 7000/8951 cut-off events. [2020-01-16 21:08:02,957 INFO L130 PetriNetUnfolder]: For 8928/8928 co-relation queries the response was YES. [2020-01-16 21:08:03,006 INFO L76 FinitePrefix]: Finished finitePrefix Result has 17916 conditions, 8951 events. 7000/8951 cut-off events. For 8928/8928 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 39167 event pairs. 0/8950 useless extension candidates. Maximal degree in co-relation 17878. Up to 1980 conditions per place. [2020-01-16 21:08:03,009 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 78 places, 0 of 154 transitions, 1 of 731 flow. [2020-01-16 21:08:03,010 INFO L478 AbstractCegarLoop]: Abstraction has has 77 places, 154 transitions [2020-01-16 21:08:03,010 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:08:08,509 INFO L129 PetriNetUnfolder]: 7000/8949 cut-off events. [2020-01-16 21:08:08,509 INFO L130 PetriNetUnfolder]: For 8928/8928 co-relation queries the response was YES. [2020-01-16 21:08:08,509 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:08:08,509 INFO L210 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] [2020-01-16 21:08:08,510 INFO L426 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]=== [2020-01-16 21:08:08,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:08:08,510 INFO L82 PathProgramCache]: Analyzing trace with hash -616501322, now seen corresponding path program 1 times [2020-01-16 21:08:08,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:08:08,511 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225498764] [2020-01-16 21:08:08,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:08:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:08:08,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:08:08,545 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225498764] [2020-01-16 21:08:08,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:08:08,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:08:08,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951003267] [2020-01-16 21:08:08,546 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:08:08,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:08:08,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:08:08,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:08:08,548 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 208 [2020-01-16 21:08:08,548 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 154 transitions. Second operand 3 states. [2020-01-16 21:08:08,548 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:08:08,548 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 208 [2020-01-16 21:08:08,549 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:08:10,106 INFO L129 PetriNetUnfolder]: 2970/4008 cut-off events. [2020-01-16 21:08:10,107 INFO L130 PetriNetUnfolder]: For 6097/6097 co-relation queries the response was YES. [2020-01-16 21:08:10,123 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8263 conditions, 4008 events. 2970/4008 cut-off events. For 6097/6097 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 18194 event pairs. 549/4556 useless extension candidates. Maximal degree in co-relation 6289. Up to 660 conditions per place. [2020-01-16 21:08:10,124 INFO L123 encePairwiseOnDemand]: 199/208 looper letters, 4 selfloop transitions, 9 changer transitions [2020-01-16 21:08:10,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:08:10,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:08:10,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2020-01-16 21:08:10,126 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9583333333333334 [2020-01-16 21:08:10,126 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2020-01-16 21:08:10,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2020-01-16 21:08:10,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:08:10,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2020-01-16 21:08:10,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:08:10,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:08:10,129 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:08:10,129 INFO L174 Difference]: Start difference. First operand has 77 places, 154 transitions. Second operand 3 states and 598 transitions. [2020-01-16 21:08:10,130 INFO L199 Difference]: Finished difference. Result has 79 places, 146 transitions [2020-01-16 21:08:10,130 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=692, PETRI_PLACES=79, PETRI_TRANSITIONS=146} [2020-01-16 21:08:10,131 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 79 places, 146 transitions [2020-01-16 21:08:10,131 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 79 places, 146 transitions [2020-01-16 21:08:11,510 INFO L129 PetriNetUnfolder]: 2970/4008 cut-off events. [2020-01-16 21:08:11,511 INFO L130 PetriNetUnfolder]: For 3986/3986 co-relation queries the response was YES. [2020-01-16 21:08:11,535 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8031 conditions, 4008 events. 2970/4008 cut-off events. For 3986/3986 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 17310 event pairs. 0/4007 useless extension candidates. Maximal degree in co-relation 7986. Up to 660 conditions per place. [2020-01-16 21:08:11,537 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 79 places, 0 of 146 transitions, 1 of 692 flow. [2020-01-16 21:08:11,537 INFO L478 AbstractCegarLoop]: Abstraction has has 78 places, 146 transitions [2020-01-16 21:08:11,537 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:08:12,815 INFO L129 PetriNetUnfolder]: 2970/4006 cut-off events. [2020-01-16 21:08:12,816 INFO L130 PetriNetUnfolder]: For 3986/3986 co-relation queries the response was YES. [2020-01-16 21:08:12,816 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:08:12,816 INFO L210 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] [2020-01-16 21:08:12,816 INFO L426 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]=== [2020-01-16 21:08:12,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:08:12,817 INFO L82 PathProgramCache]: Analyzing trace with hash 628733212, now seen corresponding path program 1 times [2020-01-16 21:08:12,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:08:12,817 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833469576] [2020-01-16 21:08:12,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:08:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:08:12,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:08:12,852 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833469576] [2020-01-16 21:08:12,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:08:12,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:08:12,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035505716] [2020-01-16 21:08:12,853 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:08:12,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:08:12,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:08:12,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:08:12,855 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 208 [2020-01-16 21:08:12,855 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 146 transitions. Second operand 3 states. [2020-01-16 21:08:12,856 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:08:12,856 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 208 [2020-01-16 21:08:12,856 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:08:13,696 INFO L129 PetriNetUnfolder]: 2256/3139 cut-off events. [2020-01-16 21:08:13,696 INFO L130 PetriNetUnfolder]: For 3984/3984 co-relation queries the response was YES. [2020-01-16 21:08:13,714 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6526 conditions, 3139 events. 2256/3139 cut-off events. For 3984/3984 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 14628 event pairs. 134/3272 useless extension candidates. Maximal degree in co-relation 4727. Up to 660 conditions per place. [2020-01-16 21:08:13,714 INFO L123 encePairwiseOnDemand]: 202/208 looper letters, 7 selfloop transitions, 6 changer transitions [2020-01-16 21:08:13,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:08:13,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:08:13,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2020-01-16 21:08:13,717 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9583333333333334 [2020-01-16 21:08:13,717 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2020-01-16 21:08:13,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2020-01-16 21:08:13,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:08:13,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2020-01-16 21:08:13,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:08:13,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:08:13,721 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:08:13,721 INFO L174 Difference]: Start difference. First operand has 78 places, 146 transitions. Second operand 3 states and 598 transitions. [2020-01-16 21:08:13,722 INFO L199 Difference]: Finished difference. Result has 80 places, 141 transitions [2020-01-16 21:08:13,722 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=668, PETRI_PLACES=80, PETRI_TRANSITIONS=141} [2020-01-16 21:08:13,722 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 80 places, 141 transitions [2020-01-16 21:08:13,722 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 80 places, 141 transitions [2020-01-16 21:08:14,520 INFO L129 PetriNetUnfolder]: 2256/3139 cut-off events. [2020-01-16 21:08:14,520 INFO L130 PetriNetUnfolder]: For 3118/3118 co-relation queries the response was YES. [2020-01-16 21:08:14,532 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6294 conditions, 3139 events. 2256/3139 cut-off events. For 3118/3118 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 14016 event pairs. 0/3138 useless extension candidates. Maximal degree in co-relation 6257. Up to 660 conditions per place. [2020-01-16 21:08:14,533 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 80 places, 0 of 141 transitions, 1 of 668 flow. [2020-01-16 21:08:14,533 INFO L478 AbstractCegarLoop]: Abstraction has has 79 places, 141 transitions [2020-01-16 21:08:14,533 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:08:15,246 INFO L129 PetriNetUnfolder]: 2256/3137 cut-off events. [2020-01-16 21:08:15,246 INFO L130 PetriNetUnfolder]: For 3118/3118 co-relation queries the response was YES. [2020-01-16 21:08:15,246 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:08:15,246 INFO L210 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] [2020-01-16 21:08:15,247 INFO L426 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]=== [2020-01-16 21:08:15,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:08:15,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1856552444, now seen corresponding path program 1 times [2020-01-16 21:08:15,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:08:15,247 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548763925] [2020-01-16 21:08:15,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:08:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:08:15,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:08:15,309 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548763925] [2020-01-16 21:08:15,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:08:15,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:08:15,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336507808] [2020-01-16 21:08:15,310 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:08:15,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:08:15,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:08:15,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:08:15,313 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 208 [2020-01-16 21:08:15,314 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 141 transitions. Second operand 3 states. [2020-01-16 21:08:15,314 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:08:15,314 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 208 [2020-01-16 21:08:15,314 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:08:15,955 INFO L129 PetriNetUnfolder]: 2020/2846 cut-off events. [2020-01-16 21:08:15,956 INFO L130 PetriNetUnfolder]: For 3416/3416 co-relation queries the response was YES. [2020-01-16 21:08:15,979 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5941 conditions, 2846 events. 2020/2846 cut-off events. For 3416/3416 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 13532 event pairs. 42/2887 useless extension candidates. Maximal degree in co-relation 4141. Up to 660 conditions per place. [2020-01-16 21:08:15,979 INFO L123 encePairwiseOnDemand]: 203/208 looper letters, 8 selfloop transitions, 5 changer transitions [2020-01-16 21:08:15,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:08:15,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:08:15,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2020-01-16 21:08:15,982 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9583333333333334 [2020-01-16 21:08:15,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2020-01-16 21:08:15,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2020-01-16 21:08:15,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:08:15,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2020-01-16 21:08:15,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:08:15,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:08:15,985 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:08:15,985 INFO L174 Difference]: Start difference. First operand has 79 places, 141 transitions. Second operand 3 states and 598 transitions. [2020-01-16 21:08:15,986 INFO L199 Difference]: Finished difference. Result has 81 places, 137 transitions [2020-01-16 21:08:15,986 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=649, PETRI_PLACES=81, PETRI_TRANSITIONS=137} [2020-01-16 21:08:15,987 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 81 places, 137 transitions [2020-01-16 21:08:15,987 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 81 places, 137 transitions [2020-01-16 21:08:16,537 INFO L129 PetriNetUnfolder]: 2020/2846 cut-off events. [2020-01-16 21:08:16,538 INFO L130 PetriNetUnfolder]: For 2826/2826 co-relation queries the response was YES. [2020-01-16 21:08:16,553 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5709 conditions, 2846 events. 2020/2846 cut-off events. For 2826/2826 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 12798 event pairs. 0/2845 useless extension candidates. Maximal degree in co-relation 5674. Up to 660 conditions per place. [2020-01-16 21:08:16,554 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 81 places, 0 of 137 transitions, 1 of 649 flow. [2020-01-16 21:08:16,555 INFO L478 AbstractCegarLoop]: Abstraction has has 80 places, 137 transitions [2020-01-16 21:08:16,555 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:08:17,105 INFO L129 PetriNetUnfolder]: 2020/2844 cut-off events. [2020-01-16 21:08:17,105 INFO L130 PetriNetUnfolder]: For 2826/2826 co-relation queries the response was YES. [2020-01-16 21:08:17,105 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:08:17,105 INFO L210 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] [2020-01-16 21:08:17,106 INFO L426 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]=== [2020-01-16 21:08:17,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:08:17,106 INFO L82 PathProgramCache]: Analyzing trace with hash 214097508, now seen corresponding path program 1 times [2020-01-16 21:08:17,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:08:17,107 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468126382] [2020-01-16 21:08:17,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:08:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:08:17,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:08:17,131 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468126382] [2020-01-16 21:08:17,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:08:17,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:08:17,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135926402] [2020-01-16 21:08:17,132 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:08:17,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:08:17,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:08:17,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:08:17,133 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 208 [2020-01-16 21:08:17,134 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 137 transitions. Second operand 3 states. [2020-01-16 21:08:17,134 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:08:17,134 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 208 [2020-01-16 21:08:17,134 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:08:17,268 INFO L129 PetriNetUnfolder]: 525/855 cut-off events. [2020-01-16 21:08:17,269 INFO L130 PetriNetUnfolder]: For 1483/1483 co-relation queries the response was YES. [2020-01-16 21:08:17,275 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1795 conditions, 855 events. 525/855 cut-off events. For 1483/1483 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3690 event pairs. 171/1025 useless extension candidates. Maximal degree in co-relation 1308. Up to 165 conditions per place. [2020-01-16 21:08:17,275 INFO L123 encePairwiseOnDemand]: 198/208 looper letters, 3 selfloop transitions, 10 changer transitions [2020-01-16 21:08:17,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:08:17,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:08:17,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2020-01-16 21:08:17,278 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9583333333333334 [2020-01-16 21:08:17,278 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2020-01-16 21:08:17,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2020-01-16 21:08:17,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:08:17,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2020-01-16 21:08:17,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:08:17,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:08:17,284 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:08:17,284 INFO L174 Difference]: Start difference. First operand has 80 places, 137 transitions. Second operand 3 states and 598 transitions. [2020-01-16 21:08:17,285 INFO L199 Difference]: Finished difference. Result has 82 places, 128 transitions [2020-01-16 21:08:17,286 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=605, PETRI_PLACES=82, PETRI_TRANSITIONS=128} [2020-01-16 21:08:17,286 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 82 places, 128 transitions [2020-01-16 21:08:17,286 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 82 places, 128 transitions [2020-01-16 21:08:17,372 INFO L129 PetriNetUnfolder]: 525/855 cut-off events. [2020-01-16 21:08:17,372 INFO L130 PetriNetUnfolder]: For 836/836 co-relation queries the response was YES. [2020-01-16 21:08:17,377 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1728 conditions, 855 events. 525/855 cut-off events. For 836/836 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3543 event pairs. 0/854 useless extension candidates. Maximal degree in co-relation 1677. Up to 165 conditions per place. [2020-01-16 21:08:17,378 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 82 places, 0 of 128 transitions, 1 of 605 flow. [2020-01-16 21:08:17,379 INFO L478 AbstractCegarLoop]: Abstraction has has 81 places, 128 transitions [2020-01-16 21:08:17,379 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:08:17,456 INFO L129 PetriNetUnfolder]: 525/853 cut-off events. [2020-01-16 21:08:17,456 INFO L130 PetriNetUnfolder]: For 836/836 co-relation queries the response was YES. [2020-01-16 21:08:17,456 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:08:17,456 INFO L210 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] [2020-01-16 21:08:17,456 INFO L426 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]=== [2020-01-16 21:08:17,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:08:17,457 INFO L82 PathProgramCache]: Analyzing trace with hash -2114464050, now seen corresponding path program 1 times [2020-01-16 21:08:17,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:08:17,457 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798776230] [2020-01-16 21:08:17,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:08:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:08:17,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:08:17,482 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798776230] [2020-01-16 21:08:17,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:08:17,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:08:17,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209410368] [2020-01-16 21:08:17,483 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:08:17,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:08:17,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:08:17,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:08:17,484 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 208 [2020-01-16 21:08:17,485 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 128 transitions. Second operand 3 states. [2020-01-16 21:08:17,485 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:08:17,485 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 208 [2020-01-16 21:08:17,485 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:08:17,643 INFO L129 PetriNetUnfolder]: 509/834 cut-off events. [2020-01-16 21:08:17,643 INFO L130 PetriNetUnfolder]: For 965/965 co-relation queries the response was YES. [2020-01-16 21:08:17,651 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 834 events. 509/834 cut-off events. For 965/965 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3632 event pairs. 5/838 useless extension candidates. Maximal degree in co-relation 1314. Up to 165 conditions per place. [2020-01-16 21:08:17,652 INFO L123 encePairwiseOnDemand]: 205/208 looper letters, 10 selfloop transitions, 3 changer transitions [2020-01-16 21:08:17,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:08:17,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:08:17,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2020-01-16 21:08:17,655 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9583333333333334 [2020-01-16 21:08:17,655 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2020-01-16 21:08:17,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2020-01-16 21:08:17,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:08:17,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2020-01-16 21:08:17,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:08:17,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:08:17,672 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:08:17,672 INFO L174 Difference]: Start difference. First operand has 81 places, 128 transitions. Second operand 3 states and 598 transitions. [2020-01-16 21:08:17,673 INFO L199 Difference]: Finished difference. Result has 83 places, 126 transitions [2020-01-16 21:08:17,673 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=596, PETRI_PLACES=83, PETRI_TRANSITIONS=126} [2020-01-16 21:08:17,674 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 83 places, 126 transitions [2020-01-16 21:08:17,674 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 83 places, 126 transitions [2020-01-16 21:08:17,748 INFO L129 PetriNetUnfolder]: 509/834 cut-off events. [2020-01-16 21:08:17,748 INFO L130 PetriNetUnfolder]: For 816/816 co-relation queries the response was YES. [2020-01-16 21:08:17,752 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1687 conditions, 834 events. 509/834 cut-off events. For 816/816 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3467 event pairs. 0/833 useless extension candidates. Maximal degree in co-relation 1656. Up to 165 conditions per place. [2020-01-16 21:08:17,753 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 83 places, 0 of 126 transitions, 1 of 596 flow. [2020-01-16 21:08:17,753 INFO L478 AbstractCegarLoop]: Abstraction has has 82 places, 126 transitions [2020-01-16 21:08:17,754 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:08:17,827 INFO L129 PetriNetUnfolder]: 509/832 cut-off events. [2020-01-16 21:08:17,827 INFO L130 PetriNetUnfolder]: For 816/816 co-relation queries the response was YES. [2020-01-16 21:08:17,828 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:08:17,828 INFO L210 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] [2020-01-16 21:08:17,828 INFO L426 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]=== [2020-01-16 21:08:17,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:08:17,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1761495302, now seen corresponding path program 1 times [2020-01-16 21:08:17,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:08:17,828 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558526399] [2020-01-16 21:08:17,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:08:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:08:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:08:17,866 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558526399] [2020-01-16 21:08:17,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:08:17,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:08:17,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383701034] [2020-01-16 21:08:17,867 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:08:17,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:08:17,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:08:17,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:08:17,868 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 208 [2020-01-16 21:08:17,868 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 126 transitions. Second operand 3 states. [2020-01-16 21:08:17,868 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:08:17,868 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 208 [2020-01-16 21:08:17,868 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:08:17,897 INFO L129 PetriNetUnfolder]: 68/173 cut-off events. [2020-01-16 21:08:17,898 INFO L130 PetriNetUnfolder]: For 348/348 co-relation queries the response was YES. [2020-01-16 21:08:17,899 INFO L76 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 173 events. 68/173 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 518 event pairs. 56/228 useless extension candidates. Maximal degree in co-relation 265. Up to 22 conditions per place. [2020-01-16 21:08:17,899 INFO L123 encePairwiseOnDemand]: 197/208 looper letters, 2 selfloop transitions, 11 changer transitions [2020-01-16 21:08:17,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:08:17,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:08:17,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2020-01-16 21:08:17,901 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9583333333333334 [2020-01-16 21:08:17,901 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2020-01-16 21:08:17,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2020-01-16 21:08:17,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:08:17,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2020-01-16 21:08:17,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:08:17,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:08:17,903 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:08:17,904 INFO L174 Difference]: Start difference. First operand has 82 places, 126 transitions. Second operand 3 states and 598 transitions. [2020-01-16 21:08:17,904 INFO L199 Difference]: Finished difference. Result has 84 places, 116 transitions [2020-01-16 21:08:17,905 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=547, PETRI_PLACES=84, PETRI_TRANSITIONS=116} [2020-01-16 21:08:17,905 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 84 places, 116 transitions [2020-01-16 21:08:17,905 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 84 places, 116 transitions [2020-01-16 21:08:17,916 INFO L129 PetriNetUnfolder]: 68/173 cut-off events. [2020-01-16 21:08:17,916 INFO L130 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2020-01-16 21:08:17,918 INFO L76 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 173 events. 68/173 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 509 event pairs. 0/172 useless extension candidates. Maximal degree in co-relation 310. Up to 22 conditions per place. [2020-01-16 21:08:17,918 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 84 places, 0 of 116 transitions, 1 of 547 flow. [2020-01-16 21:08:17,918 INFO L478 AbstractCegarLoop]: Abstraction has has 83 places, 116 transitions [2020-01-16 21:08:17,918 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:08:17,935 INFO L129 PetriNetUnfolder]: 68/171 cut-off events. [2020-01-16 21:08:17,935 INFO L130 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2020-01-16 21:08:17,935 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:08:17,935 INFO L210 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] [2020-01-16 21:08:17,935 INFO L426 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]=== [2020-01-16 21:08:17,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:08:17,936 INFO L82 PathProgramCache]: Analyzing trace with hash 430216832, now seen corresponding path program 1 times [2020-01-16 21:08:17,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:08:17,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894518601] [2020-01-16 21:08:17,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:08:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:08:17,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:08:17,969 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894518601] [2020-01-16 21:08:17,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:08:17,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:08:17,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624917060] [2020-01-16 21:08:17,970 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:08:17,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:08:17,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:08:17,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:08:17,972 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 208 [2020-01-16 21:08:17,972 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 116 transitions. Second operand 3 states. [2020-01-16 21:08:17,972 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:08:17,972 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 208 [2020-01-16 21:08:17,972 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:08:17,993 INFO L129 PetriNetUnfolder]: 1/40 cut-off events. [2020-01-16 21:08:17,993 INFO L130 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2020-01-16 21:08:17,994 INFO L76 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 40 events. 1/40 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs. 12/51 useless extension candidates. Maximal degree in co-relation 48. Up to 3 conditions per place. [2020-01-16 21:08:17,994 INFO L123 encePairwiseOnDemand]: 196/208 looper letters, 1 selfloop transitions, 12 changer transitions [2020-01-16 21:08:17,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:08:17,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:08:17,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2020-01-16 21:08:17,996 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9583333333333334 [2020-01-16 21:08:17,996 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2020-01-16 21:08:17,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2020-01-16 21:08:17,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:08:17,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2020-01-16 21:08:17,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:08:17,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:08:17,999 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:08:18,000 INFO L174 Difference]: Start difference. First operand has 83 places, 116 transitions. Second operand 3 states and 598 transitions. [2020-01-16 21:08:18,000 INFO L199 Difference]: Finished difference. Result has 85 places, 40 transitions [2020-01-16 21:08:18,000 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=85, PETRI_TRANSITIONS=40} [2020-01-16 21:08:18,001 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 85 places, 40 transitions [2020-01-16 21:08:18,001 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 85 places, 40 transitions [2020-01-16 21:08:18,005 INFO L129 PetriNetUnfolder]: 1/40 cut-off events. [2020-01-16 21:08:18,006 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2020-01-16 21:08:18,006 INFO L76 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 40 events. 1/40 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs. 0/39 useless extension candidates. Maximal degree in co-relation 48. Up to 3 conditions per place. [2020-01-16 21:08:18,007 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 85 places, 0 of 40 transitions, 1 of 168 flow. [2020-01-16 21:08:18,007 INFO L478 AbstractCegarLoop]: Abstraction has has 84 places, 40 transitions [2020-01-16 21:08:18,007 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:08:18,011 INFO L129 PetriNetUnfolder]: 1/38 cut-off events. [2020-01-16 21:08:18,012 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2020-01-16 21:08:18,012 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:08:18,012 INFO L210 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] [2020-01-16 21:08:18,012 INFO L426 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]=== [2020-01-16 21:08:18,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:08:18,013 INFO L82 PathProgramCache]: Analyzing trace with hash 2556424, now seen corresponding path program 1 times [2020-01-16 21:08:18,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:08:18,013 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929897366] [2020-01-16 21:08:18,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:08:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:08:18,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:08:18,042 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929897366] [2020-01-16 21:08:18,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:08:18,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 21:08:18,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982500228] [2020-01-16 21:08:18,045 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 21:08:18,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:08:18,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 21:08:18,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 21:08:18,046 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 208 [2020-01-16 21:08:18,047 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 40 transitions. Second operand 3 states. [2020-01-16 21:08:18,047 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:08:18,047 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 208 [2020-01-16 21:08:18,047 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:08:18,052 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2020-01-16 21:08:18,053 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2020-01-16 21:08:18,053 INFO L76 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 38 events. 0/38 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs. 1/38 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-01-16 21:08:18,053 INFO L123 encePairwiseOnDemand]: 206/208 looper letters, 1 selfloop transitions, 2 changer transitions [2020-01-16 21:08:18,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 21:08:18,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 21:08:18,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 588 transitions. [2020-01-16 21:08:18,055 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9423076923076923 [2020-01-16 21:08:18,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 588 transitions. [2020-01-16 21:08:18,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 588 transitions. [2020-01-16 21:08:18,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:08:18,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 588 transitions. [2020-01-16 21:08:18,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 21:08:18,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 21:08:18,058 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 21:08:18,058 INFO L174 Difference]: Start difference. First operand has 84 places, 40 transitions. Second operand 3 states and 588 transitions. [2020-01-16 21:08:18,058 INFO L199 Difference]: Finished difference. Result has 86 places, 38 transitions [2020-01-16 21:08:18,059 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=86, PETRI_TRANSITIONS=38} [2020-01-16 21:08:18,059 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 86 places, 38 transitions [2020-01-16 21:08:18,059 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 86 places, 38 transitions [2020-01-16 21:08:18,064 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2020-01-16 21:08:18,064 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2020-01-16 21:08:18,065 INFO L76 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 38 events. 0/38 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 0/37 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-01-16 21:08:18,065 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 86 places, 0 of 38 transitions, 1 of 159 flow. [2020-01-16 21:08:18,065 INFO L478 AbstractCegarLoop]: Abstraction has has 85 places, 38 transitions [2020-01-16 21:08:18,066 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 21:08:18,070 INFO L129 PetriNetUnfolder]: 0/36 cut-off events. [2020-01-16 21:08:18,070 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2020-01-16 21:08:18,070 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:08:18,070 INFO L210 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] [2020-01-16 21:08:18,071 INFO L426 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]=== [2020-01-16 21:08:18,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:08:18,071 INFO L82 PathProgramCache]: Analyzing trace with hash -2090874336, now seen corresponding path program 1 times [2020-01-16 21:08:18,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:08:18,072 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298596481] [2020-01-16 21:08:18,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:08:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:08:18,903 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2020-01-16 21:08:19,103 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-01-16 21:08:19,301 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2020-01-16 21:08:19,497 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 43 [2020-01-16 21:08:19,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:08:19,515 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298596481] [2020-01-16 21:08:19,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:08:19,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-01-16 21:08:19,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762605785] [2020-01-16 21:08:19,516 INFO L458 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-01-16 21:08:19,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:08:19,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-01-16 21:08:19,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-01-16 21:08:19,520 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 208 [2020-01-16 21:08:19,521 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 38 transitions. Second operand 14 states. [2020-01-16 21:08:19,521 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:08:19,521 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 208 [2020-01-16 21:08:19,521 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:09:08,467 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-01-16 21:09:10,377 INFO L129 PetriNetUnfolder]: 27662/34156 cut-off events. [2020-01-16 21:09:10,377 INFO L130 PetriNetUnfolder]: For 339/339 co-relation queries the response was YES. [2020-01-16 21:09:10,559 INFO L76 FinitePrefix]: Finished finitePrefix Result has 68337 conditions, 34156 events. 27662/34156 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 1895. Compared 160223 event pairs. 0/33537 useless extension candidates. Maximal degree in co-relation 68218. Up to 12289 conditions per place. [2020-01-16 21:09:10,560 INFO L123 encePairwiseOnDemand]: 194/208 looper letters, 78 selfloop transitions, 24 changer transitions [2020-01-16 21:09:10,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-01-16 21:09:10,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-01-16 21:09:10,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2636 transitions. [2020-01-16 21:09:10,566 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9052197802197802 [2020-01-16 21:09:10,566 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2636 transitions. [2020-01-16 21:09:10,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2636 transitions. [2020-01-16 21:09:10,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:09:10,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2636 transitions. [2020-01-16 21:09:10,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 15 states. [2020-01-16 21:09:10,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 15 states. [2020-01-16 21:09:10,577 INFO L81 ComplementDD]: Finished complementDD. Result 15 states. [2020-01-16 21:09:10,578 INFO L174 Difference]: Start difference. First operand has 85 places, 38 transitions. Second operand 14 states and 2636 transitions. [2020-01-16 21:09:10,578 INFO L199 Difference]: Finished difference. Result has 110 places, 60 transitions [2020-01-16 21:09:10,579 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=308, PETRI_PLACES=110, PETRI_TRANSITIONS=60} [2020-01-16 21:09:10,579 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 110 places, 60 transitions [2020-01-16 21:09:10,579 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 110 places, 60 transitions [2020-01-16 21:09:10,601 INFO L129 PetriNetUnfolder]: 11/166 cut-off events. [2020-01-16 21:09:10,601 INFO L130 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2020-01-16 21:09:10,603 INFO L76 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 166 events. 11/166 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 761 event pairs. 0/150 useless extension candidates. Maximal degree in co-relation 308. Up to 13 conditions per place. [2020-01-16 21:09:10,604 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 110 places, 0 of 60 transitions, 0 of 308 flow. [2020-01-16 21:09:10,604 INFO L478 AbstractCegarLoop]: Abstraction has has 110 places, 60 transitions [2020-01-16 21:09:10,604 INFO L479 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-01-16 21:09:10,627 INFO L129 PetriNetUnfolder]: 11/155 cut-off events. [2020-01-16 21:09:10,628 INFO L130 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2020-01-16 21:09:10,628 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:09:10,628 INFO L210 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] [2020-01-16 21:09:10,628 INFO L426 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]=== [2020-01-16 21:09:10,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:09:10,629 INFO L82 PathProgramCache]: Analyzing trace with hash -627925458, now seen corresponding path program 2 times [2020-01-16 21:09:10,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:09:10,630 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76983937] [2020-01-16 21:09:10,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:09:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:09:11,253 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 21:09:11,419 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-01-16 21:09:11,611 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 40 [2020-01-16 21:09:11,802 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 41 [2020-01-16 21:09:11,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:09:11,815 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76983937] [2020-01-16 21:09:11,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:09:11,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-01-16 21:09:11,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867947466] [2020-01-16 21:09:11,816 INFO L458 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-01-16 21:09:11,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:09:11,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-01-16 21:09:11,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-01-16 21:09:11,822 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 208 [2020-01-16 21:09:11,823 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 60 transitions. Second operand 14 states. [2020-01-16 21:09:11,824 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:09:11,824 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 208 [2020-01-16 21:09:11,824 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:12:21,396 INFO L129 PetriNetUnfolder]: 38250/49528 cut-off events. [2020-01-16 21:12:21,396 INFO L130 PetriNetUnfolder]: For 58674/58674 co-relation queries the response was YES. [2020-01-16 21:12:21,780 INFO L76 FinitePrefix]: Finished finitePrefix Result has 150180 conditions, 49528 events. 38250/49528 cut-off events. For 58674/58674 co-relation queries the response was YES. Maximal size of possible extension queue 2714. Compared 277022 event pairs. 1/48898 useless extension candidates. Maximal degree in co-relation 149711. Up to 18445 conditions per place. [2020-01-16 21:12:21,781 INFO L123 encePairwiseOnDemand]: 194/208 looper letters, 117 selfloop transitions, 93 changer transitions [2020-01-16 21:12:21,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-01-16 21:12:21,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-01-16 21:12:21,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2636 transitions. [2020-01-16 21:12:21,789 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9052197802197802 [2020-01-16 21:12:21,789 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2636 transitions. [2020-01-16 21:12:21,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2636 transitions. [2020-01-16 21:12:21,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:12:21,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2636 transitions. [2020-01-16 21:12:21,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 15 states. [2020-01-16 21:12:21,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 15 states. [2020-01-16 21:12:21,799 INFO L81 ComplementDD]: Finished complementDD. Result 15 states. [2020-01-16 21:12:21,799 INFO L174 Difference]: Start difference. First operand has 110 places, 60 transitions. Second operand 14 states and 2636 transitions. [2020-01-16 21:12:21,801 INFO L199 Difference]: Finished difference. Result has 135 places, 138 transitions [2020-01-16 21:12:21,801 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1104, PETRI_PLACES=135, PETRI_TRANSITIONS=138} [2020-01-16 21:12:21,801 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 135 places, 138 transitions [2020-01-16 21:12:21,801 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 135 places, 138 transitions [2020-01-16 21:12:22,013 INFO L129 PetriNetUnfolder]: 70/842 cut-off events. [2020-01-16 21:12:22,013 INFO L130 PetriNetUnfolder]: For 1462/1472 co-relation queries the response was YES. [2020-01-16 21:12:22,020 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2214 conditions, 842 events. 70/842 cut-off events. For 1462/1472 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7924 event pairs. 0/750 useless extension candidates. Maximal degree in co-relation 1968. Up to 72 conditions per place. [2020-01-16 21:12:22,021 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 0 of 135 places, 0 of 138 transitions, 0 of 1104 flow. [2020-01-16 21:12:22,021 INFO L478 AbstractCegarLoop]: Abstraction has has 135 places, 138 transitions [2020-01-16 21:12:22,021 INFO L479 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-01-16 21:12:22,139 INFO L129 PetriNetUnfolder]: 70/773 cut-off events. [2020-01-16 21:12:22,140 INFO L130 PetriNetUnfolder]: For 1463/1474 co-relation queries the response was YES. [2020-01-16 21:12:22,140 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:12:22,140 INFO L210 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] [2020-01-16 21:12:22,140 INFO L426 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]=== [2020-01-16 21:12:22,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:12:22,140 INFO L82 PathProgramCache]: Analyzing trace with hash -87823674, now seen corresponding path program 3 times [2020-01-16 21:12:22,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:12:22,141 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828828884] [2020-01-16 21:12:22,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:12:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:12:22,779 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2020-01-16 21:12:22,930 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-01-16 21:12:23,097 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2020-01-16 21:12:23,291 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 44 [2020-01-16 21:12:23,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:12:23,303 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828828884] [2020-01-16 21:12:23,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:12:23,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-01-16 21:12:23,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997036905] [2020-01-16 21:12:23,304 INFO L458 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-01-16 21:12:23,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:12:23,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-01-16 21:12:23,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-01-16 21:12:23,306 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 208 [2020-01-16 21:12:23,307 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 138 transitions. Second operand 14 states. [2020-01-16 21:12:23,308 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:12:23,308 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 208 [2020-01-16 21:12:23,308 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 21:16:29,938 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-01-16 21:16:43,878 INFO L129 PetriNetUnfolder]: 38250/49243 cut-off events. [2020-01-16 21:16:43,878 INFO L130 PetriNetUnfolder]: For 168890/169213 co-relation queries the response was YES. [2020-01-16 21:16:44,625 INFO L76 FinitePrefix]: Finished finitePrefix Result has 201216 conditions, 49243 events. 38250/49243 cut-off events. For 168890/169213 co-relation queries the response was YES. Maximal size of possible extension queue 2714. Compared 263348 event pairs. 1/48620 useless extension candidates. Maximal degree in co-relation 200533. Up to 16907 conditions per place. [2020-01-16 21:16:44,626 INFO L123 encePairwiseOnDemand]: 194/208 looper letters, 123 selfloop transitions, 93 changer transitions [2020-01-16 21:16:44,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-01-16 21:16:44,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-01-16 21:16:44,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2636 transitions. [2020-01-16 21:16:44,632 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9052197802197802 [2020-01-16 21:16:44,632 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2636 transitions. [2020-01-16 21:16:44,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2636 transitions. [2020-01-16 21:16:44,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 21:16:44,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2636 transitions. [2020-01-16 21:16:44,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 15 states. [2020-01-16 21:16:44,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 15 states. [2020-01-16 21:16:44,641 INFO L81 ComplementDD]: Finished complementDD. Result 15 states. [2020-01-16 21:16:44,641 INFO L174 Difference]: Start difference. First operand has 135 places, 138 transitions. Second operand 14 states and 2636 transitions. [2020-01-16 21:16:44,643 INFO L199 Difference]: Finished difference. Result has 151 places, 140 transitions [2020-01-16 21:16:44,643 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1392, PETRI_PLACES=151, PETRI_TRANSITIONS=140} [2020-01-16 21:16:44,643 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 151 places, 140 transitions [2020-01-16 21:16:44,643 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 151 places, 140 transitions [2020-01-16 21:16:44,783 INFO L129 PetriNetUnfolder]: 70/841 cut-off events. [2020-01-16 21:16:44,783 INFO L130 PetriNetUnfolder]: For 2348/2365 co-relation queries the response was YES. [2020-01-16 21:16:44,790 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2441 conditions, 841 events. 70/841 cut-off events. For 2348/2365 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7898 event pairs. 0/753 useless extension candidates. Maximal degree in co-relation 2264. Up to 72 conditions per place. [2020-01-16 21:16:44,791 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 151 places, 0 of 140 transitions, 71 of 1392 flow. [2020-01-16 21:16:44,791 INFO L478 AbstractCegarLoop]: Abstraction has has 150 places, 140 transitions [2020-01-16 21:16:44,791 INFO L479 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-01-16 21:16:44,909 INFO L129 PetriNetUnfolder]: 70/773 cut-off events. [2020-01-16 21:16:44,909 INFO L130 PetriNetUnfolder]: For 2349/2368 co-relation queries the response was YES. [2020-01-16 21:16:44,909 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 21:16:44,909 INFO L210 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] [2020-01-16 21:16:44,909 INFO L426 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]=== [2020-01-16 21:16:44,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 21:16:44,910 INFO L82 PathProgramCache]: Analyzing trace with hash -2140782036, now seen corresponding path program 4 times [2020-01-16 21:16:44,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 21:16:44,910 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153654102] [2020-01-16 21:16:44,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 21:16:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 21:16:45,592 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 36 [2020-01-16 21:16:45,741 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 39 [2020-01-16 21:16:45,914 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2020-01-16 21:16:46,088 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 42 [2020-01-16 21:16:46,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 21:16:46,099 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153654102] [2020-01-16 21:16:46,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 21:16:46,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-01-16 21:16:46,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221433641] [2020-01-16 21:16:46,100 INFO L458 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-01-16 21:16:46,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 21:16:46,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-01-16 21:16:46,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-01-16 21:16:46,102 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 208 [2020-01-16 21:16:46,103 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 140 transitions. Second operand 14 states. [2020-01-16 21:16:46,103 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 21:16:46,103 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 208 [2020-01-16 21:16:46,103 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2020-01-16 21:18:12,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-01-16 21:18:12,878 WARN L543 AbstractCegarLoop]: Verification canceled [2020-01-16 21:18:12,881 WARN L227 ceAbstractionStarter]: Timeout [2020-01-16 21:18:12,882 INFO L202 PluginConnector]: Adding new model example_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.01 09:18:12 BasicIcfg [2020-01-16 21:18:12,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-01-16 21:18:12,884 INFO L168 Benchmark]: Toolchain (without parser) took 842183.67 ms. Allocated memory was 145.8 MB in the beginning and 2.8 GB in the end (delta: 2.7 GB). Free memory was 120.8 MB in the beginning and 303.2 MB in the end (delta: -182.4 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2020-01-16 21:18:12,884 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-01-16 21:18:12,885 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.45 ms. Allocated memory is still 145.8 MB. Free memory was 120.6 MB in the beginning and 118.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-01-16 21:18:12,886 INFO L168 Benchmark]: Boogie Preprocessor took 21.53 ms. Allocated memory is still 145.8 MB. Free memory was 118.9 MB in the beginning and 117.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-01-16 21:18:12,886 INFO L168 Benchmark]: RCFGBuilder took 403.57 ms. Allocated memory is still 145.8 MB. Free memory was 117.5 MB in the beginning and 102.0 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. [2020-01-16 21:18:12,887 INFO L168 Benchmark]: TraceAbstraction took 841718.29 ms. Allocated memory was 145.8 MB in the beginning and 2.8 GB in the end (delta: 2.7 GB). Free memory was 101.6 MB in the beginning and 303.2 MB in the end (delta: -201.7 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2020-01-16 21:18:12,890 INFO L335 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 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 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 35.45 ms. Allocated memory is still 145.8 MB. Free memory was 120.6 MB in the beginning and 118.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.53 ms. Allocated memory is still 145.8 MB. Free memory was 118.9 MB in the beginning and 117.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 403.57 ms. Allocated memory is still 145.8 MB. Free memory was 117.5 MB in the beginning and 102.0 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 841718.29 ms. Allocated memory was 145.8 MB in the beginning and 2.8 GB in the end (delta: 2.7 GB). Free memory was 101.6 MB in the beginning and 303.2 MB in the end (delta: -201.7 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 91.0s, 100 ProgramPointsBefore, 86 ProgramPointsAfterwards, 195 TransitionsBefore, 182 TransitionsAfterwards, 6600 CoEnabledTransitionPairs, 2 FixpointIterations, 1 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, 13 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 37]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 37). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (14states, 181/208 universal loopers) in iteration 15,while PetriNetUnfolder was constructing finite prefix that currently has 113985 conditions, 27315 events (22710/27314 cut-off events. For 119248/119571 co-relation queries the response was YES. Maximal size of possible extension queue 2725. Compared 134873 event pairs. 0/29258 useless extension candidates. Maximal degree in co-relation 113930. Up to 13995 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. Result: TIMEOUT, OverallTime: 841.3s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 628.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 91.0s, HoareTripleCheckerStatistics: 308 SDtfs, 340 SDslu, 264 SDs, 0 SdLazy, 520 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=150occurred in iteration=14, 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, 24 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 555 NumberOfCodeBlocks, 555 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 540 ConstructedInterpolants, 0 QuantifiedInterpolants, 226080 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