/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-d9e330d [2020-02-10 22:45:42,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-02-10 22:45:42,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-02-10 22:45:42,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-02-10 22:45:42,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-02-10 22:45:42,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-02-10 22:45:42,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-02-10 22:45:42,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-02-10 22:45:42,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-02-10 22:45:42,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-02-10 22:45:42,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-02-10 22:45:42,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-02-10 22:45:42,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-02-10 22:45:42,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-02-10 22:45:42,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-02-10 22:45:42,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-02-10 22:45:42,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-02-10 22:45:42,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-02-10 22:45:42,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-02-10 22:45:42,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-02-10 22:45:42,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-02-10 22:45:42,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-02-10 22:45:42,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-02-10 22:45:42,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-02-10 22:45:42,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-02-10 22:45:42,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-02-10 22:45:42,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-02-10 22:45:42,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-02-10 22:45:42,656 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 [2020-02-10 22:45:42,693 INFO L113 SettingsManager]: Loading preferences was successful [2020-02-10 22:45:42,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-02-10 22:45:42,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-02-10 22:45:42,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-02-10 22:45:42,698 INFO L138 SettingsManager]: * Use SBE=true [2020-02-10 22:45:42,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-02-10 22:45:42,698 INFO L138 SettingsManager]: * sizeof long=4 [2020-02-10 22:45:42,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-02-10 22:45:42,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-02-10 22:45:42,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-02-10 22:45:42,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-02-10 22:45:42,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-02-10 22:45:42,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-02-10 22:45:42,699 INFO L138 SettingsManager]: * sizeof long double=12 [2020-02-10 22:45:42,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-02-10 22:45:42,700 INFO L138 SettingsManager]: * Use constant arrays=true [2020-02-10 22:45:42,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-02-10 22:45:42,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-02-10 22:45:42,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-02-10 22:45:42,701 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-02-10 22:45:42,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-02-10 22:45:42,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-10 22:45:42,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-02-10 22:45:42,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-02-10 22:45:42,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-02-10 22:45:42,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-02-10 22:45:42,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-02-10 22:45:42,703 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-02-10 22:45:42,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-02-10 22:45:43,018 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-02-10 22:45:43,040 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-02-10 22:45:43,044 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-02-10 22:45:43,046 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-02-10 22:45:43,046 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-02-10 22:45:43,047 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_12.bpl [2020-02-10 22:45:43,047 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_12.bpl' [2020-02-10 22:45:43,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-02-10 22:45:43,095 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-02-10 22:45:43,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-02-10 22:45:43,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-02-10 22:45:43,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-02-10 22:45:43,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:45:43" (1/1) ... [2020-02-10 22:45:43,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:45:43" (1/1) ... [2020-02-10 22:45:43,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-02-10 22:45:43,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-02-10 22:45:43,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-02-10 22:45:43,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-02-10 22:45:43,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:45:43" (1/1) ... [2020-02-10 22:45:43,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:45:43" (1/1) ... [2020-02-10 22:45:43,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:45:43" (1/1) ... [2020-02-10 22:45:43,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:45:43" (1/1) ... [2020-02-10 22:45:43,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:45:43" (1/1) ... [2020-02-10 22:45:43,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:45:43" (1/1) ... [2020-02-10 22:45:43,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:45:43" (1/1) ... [2020-02-10 22:45:43,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-02-10 22:45:43,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-02-10 22:45:43,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-02-10 22:45:43,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-02-10 22:45:43,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:45:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-10 22:45:43,248 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-02-10 22:45:43,248 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-02-10 22:45:43,248 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-02-10 22:45:43,250 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-02-10 22:45:43,250 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-02-10 22:45:43,251 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-02-10 22:45:43,252 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-02-10 22:45:43,252 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-02-10 22:45:43,252 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-02-10 22:45:43,252 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-02-10 22:45:43,252 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-02-10 22:45:43,252 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-02-10 22:45:43,253 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-02-10 22:45:43,253 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-02-10 22:45:43,253 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-02-10 22:45:43,253 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2020-02-10 22:45:43,253 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2020-02-10 22:45:43,253 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2020-02-10 22:45:43,254 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-02-10 22:45:43,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-02-10 22:45:43,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-02-10 22:45:43,255 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-02-10 22:45:43,255 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-02-10 22:45:43,255 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-02-10 22:45:43,256 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2020-02-10 22:45:43,256 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2020-02-10 22:45:43,263 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2020-02-10 22:45:43,263 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2020-02-10 22:45:43,264 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2020-02-10 22:45:43,264 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2020-02-10 22:45:43,265 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2020-02-10 22:45:43,265 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2020-02-10 22:45:43,265 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2020-02-10 22:45:43,265 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2020-02-10 22:45:43,265 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2020-02-10 22:45:43,266 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2020-02-10 22:45:43,267 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2020-02-10 22:45:43,267 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2020-02-10 22:45:43,267 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2020-02-10 22:45:43,269 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-02-10 22:45:43,542 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-02-10 22:45:43,543 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-02-10 22:45:43,554 INFO L202 PluginConnector]: Adding new model example_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 10:45:43 BoogieIcfgContainer [2020-02-10 22:45:43,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-02-10 22:45:43,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-02-10 22:45:43,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-02-10 22:45:43,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-02-10 22:45:43,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:45:43" (1/2) ... [2020-02-10 22:45:43,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1b31f1 and model type example_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 10:45:43, skipping insertion in model container [2020-02-10 22:45:43,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 10:45:43" (2/2) ... [2020-02-10 22:45:43,568 INFO L109 eAbstractionObserver]: Analyzing ICFG example_12.bpl [2020-02-10 22:45:43,580 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-02-10 22:45:43,587 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-02-10 22:45:43,589 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-02-10 22:45:43,924 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-02-10 22:45:43,954 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-02-10 22:45:43,955 INFO L376 AbstractCegarLoop]: Hoare is false [2020-02-10 22:45:43,955 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-02-10 22:45:43,955 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-02-10 22:45:43,955 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-02-10 22:45:43,955 INFO L380 AbstractCegarLoop]: Difference is false [2020-02-10 22:45:43,956 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-02-10 22:45:43,956 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-02-10 22:45:43,988 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 100 places, 195 transitions [2020-02-10 22:46:29,443 INFO L129 PetriNetUnfolder]: 20481/24615 cut-off events. [2020-02-10 22:46:29,443 INFO L130 PetriNetUnfolder]: For 24576/24576 co-relation queries the response was YES. [2020-02-10 22:46:29,706 INFO L76 FinitePrefix]: Finished finitePrefix Result has 49228 conditions, 24615 events. 20481/24615 cut-off events. For 24576/24576 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 94642 event pairs. 0/24614 useless extension candidates. Maximal degree in co-relation 22585. Up to 5544 conditions per place. [2020-02-10 22:46:29,707 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 195 transitions [2020-02-10 22:46:30,277 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 181 transitions [2020-02-10 22:46:30,282 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 181 transitions [2020-02-10 22:46:30,282 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 86 places, 181 transitions [2020-02-10 22:47:14,729 INFO L129 PetriNetUnfolder]: 20481/24613 cut-off events. [2020-02-10 22:47:14,729 INFO L130 PetriNetUnfolder]: For 24576/24576 co-relation queries the response was YES. [2020-02-10 22:47:14,950 INFO L76 FinitePrefix]: Finished finitePrefix Result has 49226 conditions, 24613 events. 20481/24613 cut-off events. For 24576/24576 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 101337 event pairs. 0/24613 useless extension candidates. Maximal degree in co-relation 22585. Up to 5544 conditions per place. [2020-02-10 22:47:15,533 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 86 places, 181 transitions [2020-02-10 22:47:59,157 INFO L129 PetriNetUnfolder]: 20481/24613 cut-off events. [2020-02-10 22:47:59,157 INFO L130 PetriNetUnfolder]: For 24576/24576 co-relation queries the response was YES. [2020-02-10 22:47:59,354 INFO L76 FinitePrefix]: Finished finitePrefix Result has 49226 conditions, 24613 events. 20481/24613 cut-off events. For 24576/24576 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 101337 event pairs. 0/24613 useless extension candidates. Maximal degree in co-relation 22585. Up to 5544 conditions per place. [2020-02-10 22:47:59,772 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 6600 [2020-02-10 22:47:59,773 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-02-10 22:48:00,002 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1782 [2020-02-10 22:48:00,003 INFO L214 etLargeBlockEncoding]: Total number of compositions: 12 [2020-02-10 22:48:00,003 INFO L160 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 89725 [2020-02-10 22:48:39,389 INFO L129 PetriNetUnfolder]: 20481/24600 cut-off events. [2020-02-10 22:48:39,389 INFO L130 PetriNetUnfolder]: For 24576/24576 co-relation queries the response was YES. [2020-02-10 22:48:39,389 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 22:48:39,390 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 22:48:39,391 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 22:48:39,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:48:39,397 INFO L82 PathProgramCache]: Analyzing trace with hash -240088033, now seen corresponding path program 1 times [2020-02-10 22:48:39,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:48:39,405 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992478279] [2020-02-10 22:48:39,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:48:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:48:39,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:48:39,575 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992478279] [2020-02-10 22:48:39,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:48:39,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 22:48:39,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236056932] [2020-02-10 22:48:39,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 22:48:39,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:48:39,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 22:48:39,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:48:39,610 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 207 [2020-02-10 22:48:39,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 169 transitions. Second operand 3 states. [2020-02-10 22:48:39,616 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 22:48:39,616 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 207 [2020-02-10 22:48:39,618 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 22:48:54,725 INFO L129 PetriNetUnfolder]: 11153/13787 cut-off events. [2020-02-10 22:48:54,726 INFO L130 PetriNetUnfolder]: For 19345/19345 co-relation queries the response was YES. [2020-02-10 22:48:54,806 INFO L76 FinitePrefix]: Finished finitePrefix Result has 28150 conditions, 13787 events. 11153/13787 cut-off events. For 19345/19345 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 61254 event pairs. 1486/15273 useless extension candidates. Maximal degree in co-relation 22552. Up to 2772 conditions per place. [2020-02-10 22:48:55,040 INFO L145 encePairwiseOnDemand]: 199/207 looper letters, 5 selfloop transitions, 1 changer transitions 0/162 dead transitions. [2020-02-10 22:48:55,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 22:48:55,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 22:48:55,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2020-02-10 22:48:55,056 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9581320450885669 [2020-02-10 22:48:55,057 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2020-02-10 22:48:55,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2020-02-10 22:48:55,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 22:48:55,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2020-02-10 22:48:55,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 22:48:55,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 22:48:55,075 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 22:48:55,077 INFO L178 Difference]: Start difference. First operand has 74 places, 169 transitions. Second operand 3 states and 595 transitions. [2020-02-10 22:48:55,080 INFO L206 Difference]: Finished difference. Result has 76 places, 162 transitions [2020-02-10 22:48:55,083 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=773, PETRI_PLACES=76, PETRI_TRANSITIONS=162} [2020-02-10 22:48:55,084 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 76 places, 162 transitions [2020-02-10 22:49:07,722 INFO L129 PetriNetUnfolder]: 11153/13787 cut-off events. [2020-02-10 22:49:07,723 INFO L130 PetriNetUnfolder]: For 13763/13763 co-relation queries the response was YES. [2020-02-10 22:49:07,798 INFO L76 FinitePrefix]: Finished finitePrefix Result has 27588 conditions, 13787 events. 11153/13787 cut-off events. For 13763/13763 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 57167 event pairs. 0/13787 useless extension candidates. Maximal degree in co-relation 27549. Up to 2772 conditions per place. [2020-02-10 22:49:07,799 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 162 transitions [2020-02-10 22:49:08,004 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 162 transitions [2020-02-10 22:49:08,006 INFO L479 AbstractCegarLoop]: Abstraction has has 76 places, 162 transitions [2020-02-10 22:49:08,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 22:49:20,872 INFO L129 PetriNetUnfolder]: 11153/13786 cut-off events. [2020-02-10 22:49:20,873 INFO L130 PetriNetUnfolder]: For 13763/13763 co-relation queries the response was YES. [2020-02-10 22:49:20,873 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 22:49:20,873 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 22:49:20,873 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 22:49:20,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:49:20,874 INFO L82 PathProgramCache]: Analyzing trace with hash 43370467, now seen corresponding path program 1 times [2020-02-10 22:49:20,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:49:20,874 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383713226] [2020-02-10 22:49:20,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:49:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:49:20,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:49:20,931 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383713226] [2020-02-10 22:49:20,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:49:20,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 22:49:20,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949322694] [2020-02-10 22:49:20,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 22:49:20,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:49:20,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 22:49:20,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:49:20,938 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 207 [2020-02-10 22:49:20,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 162 transitions. Second operand 3 states. [2020-02-10 22:49:20,939 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 22:49:20,939 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 207 [2020-02-10 22:49:20,939 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 22:49:34,402 INFO L129 PetriNetUnfolder]: 10693/13271 cut-off events. [2020-02-10 22:49:34,403 INFO L130 PetriNetUnfolder]: For 15704/15704 co-relation queries the response was YES. [2020-02-10 22:49:34,479 INFO L76 FinitePrefix]: Finished finitePrefix Result has 27702 conditions, 13271 events. 10693/13271 cut-off events. For 15704/15704 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 59747 event pairs. 56/13327 useless extension candidates. Maximal degree in co-relation 27661. Up to 2772 conditions per place. [2020-02-10 22:49:34,642 INFO L145 encePairwiseOnDemand]: 203/207 looper letters, 9 selfloop transitions, 1 changer transitions 0/159 dead transitions. [2020-02-10 22:49:34,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 22:49:34,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 22:49:34,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2020-02-10 22:49:34,645 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9581320450885669 [2020-02-10 22:49:34,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2020-02-10 22:49:34,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2020-02-10 22:49:34,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 22:49:34,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2020-02-10 22:49:34,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 22:49:34,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 22:49:34,650 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 22:49:34,650 INFO L178 Difference]: Start difference. First operand has 76 places, 162 transitions. Second operand 3 states and 595 transitions. [2020-02-10 22:49:34,652 INFO L206 Difference]: Finished difference. Result has 78 places, 159 transitions [2020-02-10 22:49:34,652 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=760, PETRI_PLACES=78, PETRI_TRANSITIONS=159} [2020-02-10 22:49:34,653 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 78 places, 159 transitions [2020-02-10 22:49:46,533 INFO L129 PetriNetUnfolder]: 10693/13271 cut-off events. [2020-02-10 22:49:46,533 INFO L130 PetriNetUnfolder]: For 13248/13248 co-relation queries the response was YES. [2020-02-10 22:49:46,738 INFO L76 FinitePrefix]: Finished finitePrefix Result has 26558 conditions, 13271 events. 10693/13271 cut-off events. For 13248/13248 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 55083 event pairs. 0/13271 useless extension candidates. Maximal degree in co-relation 26530. Up to 2772 conditions per place. [2020-02-10 22:49:46,738 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 159 transitions [2020-02-10 22:49:46,936 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 159 transitions [2020-02-10 22:49:46,936 INFO L479 AbstractCegarLoop]: Abstraction has has 78 places, 159 transitions [2020-02-10 22:49:46,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 22:50:00,584 INFO L129 PetriNetUnfolder]: 10693/13270 cut-off events. [2020-02-10 22:50:00,585 INFO L130 PetriNetUnfolder]: For 13248/13248 co-relation queries the response was YES. [2020-02-10 22:50:00,585 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 22:50:00,585 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 22:50:00,585 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 22:50:00,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:50:00,586 INFO L82 PathProgramCache]: Analyzing trace with hash 672178525, now seen corresponding path program 1 times [2020-02-10 22:50:00,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:50:00,586 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755804058] [2020-02-10 22:50:00,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:50:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:50:00,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:50:00,662 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755804058] [2020-02-10 22:50:00,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:50:00,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 22:50:00,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290911057] [2020-02-10 22:50:00,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 22:50:00,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:50:00,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 22:50:00,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:50:00,665 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 207 [2020-02-10 22:50:00,665 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 159 transitions. Second operand 3 states. [2020-02-10 22:50:00,665 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 22:50:00,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 207 [2020-02-10 22:50:00,666 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 22:50:07,347 INFO L129 PetriNetUnfolder]: 7000/8950 cut-off events. [2020-02-10 22:50:07,348 INFO L130 PetriNetUnfolder]: For 11828/11828 co-relation queries the response was YES. [2020-02-10 22:50:07,398 INFO L76 FinitePrefix]: Finished finitePrefix Result has 18480 conditions, 8950 events. 7000/8950 cut-off events. For 11828/11828 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 41445 event pairs. 592/9542 useless extension candidates. Maximal degree in co-relation 18451. Up to 1980 conditions per place. [2020-02-10 22:50:07,531 INFO L145 encePairwiseOnDemand]: 200/207 looper letters, 6 selfloop transitions, 1 changer transitions 0/153 dead transitions. [2020-02-10 22:50:07,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 22:50:07,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 22:50:07,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2020-02-10 22:50:07,533 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9581320450885669 [2020-02-10 22:50:07,533 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2020-02-10 22:50:07,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2020-02-10 22:50:07,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 22:50:07,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2020-02-10 22:50:07,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 22:50:07,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 22:50:07,537 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 22:50:07,537 INFO L178 Difference]: Start difference. First operand has 78 places, 159 transitions. Second operand 3 states and 595 transitions. [2020-02-10 22:50:07,538 INFO L206 Difference]: Finished difference. Result has 80 places, 153 transitions [2020-02-10 22:50:07,539 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=732, PETRI_PLACES=80, PETRI_TRANSITIONS=153} [2020-02-10 22:50:07,539 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 80 places, 153 transitions [2020-02-10 22:50:13,344 INFO L129 PetriNetUnfolder]: 7000/8950 cut-off events. [2020-02-10 22:50:13,344 INFO L130 PetriNetUnfolder]: For 8928/8928 co-relation queries the response was YES. [2020-02-10 22:50:13,395 INFO L76 FinitePrefix]: Finished finitePrefix Result has 17918 conditions, 8950 events. 7000/8950 cut-off events. For 8928/8928 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 37588 event pairs. 0/8950 useless extension candidates. Maximal degree in co-relation 17889. Up to 1980 conditions per place. [2020-02-10 22:50:13,395 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 153 transitions [2020-02-10 22:50:13,504 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 153 transitions [2020-02-10 22:50:13,504 INFO L479 AbstractCegarLoop]: Abstraction has has 80 places, 153 transitions [2020-02-10 22:50:13,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 22:50:19,160 INFO L129 PetriNetUnfolder]: 7000/8949 cut-off events. [2020-02-10 22:50:19,161 INFO L130 PetriNetUnfolder]: For 8928/8928 co-relation queries the response was YES. [2020-02-10 22:50:19,161 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 22:50:19,161 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 22:50:19,161 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 22:50:19,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:50:19,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1659175459, now seen corresponding path program 1 times [2020-02-10 22:50:19,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:50:19,163 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128368400] [2020-02-10 22:50:19,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:50:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:50:19,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:50:19,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128368400] [2020-02-10 22:50:19,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:50:19,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 22:50:19,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128886330] [2020-02-10 22:50:19,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 22:50:19,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:50:19,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 22:50:19,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:50:19,214 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 207 [2020-02-10 22:50:19,215 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 153 transitions. Second operand 3 states. [2020-02-10 22:50:19,215 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 22:50:19,215 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 207 [2020-02-10 22:50:19,215 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 22:50:20,718 INFO L129 PetriNetUnfolder]: 2970/4007 cut-off events. [2020-02-10 22:50:20,718 INFO L130 PetriNetUnfolder]: For 6097/6097 co-relation queries the response was YES. [2020-02-10 22:50:20,743 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8266 conditions, 4007 events. 2970/4007 cut-off events. For 6097/6097 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 18193 event pairs. 549/4556 useless extension candidates. Maximal degree in co-relation 8236. Up to 660 conditions per place. [2020-02-10 22:50:20,797 INFO L145 encePairwiseOnDemand]: 198/207 looper letters, 4 selfloop transitions, 1 changer transitions 0/145 dead transitions. [2020-02-10 22:50:20,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 22:50:20,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 22:50:20,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2020-02-10 22:50:20,799 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9581320450885669 [2020-02-10 22:50:20,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2020-02-10 22:50:20,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2020-02-10 22:50:20,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 22:50:20,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2020-02-10 22:50:20,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 22:50:20,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 22:50:20,803 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 22:50:20,803 INFO L178 Difference]: Start difference. First operand has 80 places, 153 transitions. Second operand 3 states and 595 transitions. [2020-02-10 22:50:20,804 INFO L206 Difference]: Finished difference. Result has 82 places, 145 transitions [2020-02-10 22:50:20,804 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=694, PETRI_PLACES=82, PETRI_TRANSITIONS=145} [2020-02-10 22:50:20,805 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 82 places, 145 transitions [2020-02-10 22:50:21,870 INFO L129 PetriNetUnfolder]: 2970/4007 cut-off events. [2020-02-10 22:50:21,871 INFO L130 PetriNetUnfolder]: For 3986/3986 co-relation queries the response was YES. [2020-02-10 22:50:21,892 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8034 conditions, 4007 events. 2970/4007 cut-off events. For 3986/3986 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 16751 event pairs. 0/4007 useless extension candidates. Maximal degree in co-relation 8004. Up to 660 conditions per place. [2020-02-10 22:50:21,893 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 145 transitions [2020-02-10 22:50:21,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 145 transitions [2020-02-10 22:50:21,962 INFO L479 AbstractCegarLoop]: Abstraction has has 82 places, 145 transitions [2020-02-10 22:50:21,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 22:50:23,368 INFO L129 PetriNetUnfolder]: 2970/4006 cut-off events. [2020-02-10 22:50:23,368 INFO L130 PetriNetUnfolder]: For 3986/3986 co-relation queries the response was YES. [2020-02-10 22:50:23,368 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 22:50:23,369 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 22:50:23,369 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 22:50:23,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:50:23,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1245434825, now seen corresponding path program 1 times [2020-02-10 22:50:23,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:50:23,369 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523705879] [2020-02-10 22:50:23,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:50:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:50:23,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:50:23,398 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523705879] [2020-02-10 22:50:23,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:50:23,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 22:50:23,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342324079] [2020-02-10 22:50:23,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 22:50:23,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:50:23,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 22:50:23,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:50:23,401 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 207 [2020-02-10 22:50:23,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 145 transitions. Second operand 3 states. [2020-02-10 22:50:23,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 22:50:23,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 207 [2020-02-10 22:50:23,402 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 22:50:24,228 INFO L129 PetriNetUnfolder]: 2256/3138 cut-off events. [2020-02-10 22:50:24,228 INFO L130 PetriNetUnfolder]: For 3984/3984 co-relation queries the response was YES. [2020-02-10 22:50:24,254 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6530 conditions, 3138 events. 2256/3138 cut-off events. For 3984/3984 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 14627 event pairs. 134/3272 useless extension candidates. Maximal degree in co-relation 6499. Up to 660 conditions per place. [2020-02-10 22:50:24,295 INFO L145 encePairwiseOnDemand]: 201/207 looper letters, 7 selfloop transitions, 1 changer transitions 0/140 dead transitions. [2020-02-10 22:50:24,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 22:50:24,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 22:50:24,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2020-02-10 22:50:24,297 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9581320450885669 [2020-02-10 22:50:24,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2020-02-10 22:50:24,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2020-02-10 22:50:24,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 22:50:24,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2020-02-10 22:50:24,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 22:50:24,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 22:50:24,300 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 22:50:24,301 INFO L178 Difference]: Start difference. First operand has 82 places, 145 transitions. Second operand 3 states and 595 transitions. [2020-02-10 22:50:24,301 INFO L206 Difference]: Finished difference. Result has 84 places, 140 transitions [2020-02-10 22:50:24,302 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=671, PETRI_PLACES=84, PETRI_TRANSITIONS=140} [2020-02-10 22:50:24,302 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 84 places, 140 transitions [2020-02-10 22:50:25,014 INFO L129 PetriNetUnfolder]: 2256/3138 cut-off events. [2020-02-10 22:50:25,014 INFO L130 PetriNetUnfolder]: For 3118/3118 co-relation queries the response was YES. [2020-02-10 22:50:25,032 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6298 conditions, 3138 events. 2256/3138 cut-off events. For 3118/3118 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 13517 event pairs. 0/3138 useless extension candidates. Maximal degree in co-relation 6267. Up to 660 conditions per place. [2020-02-10 22:50:25,032 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 140 transitions [2020-02-10 22:50:25,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 140 transitions [2020-02-10 22:50:25,081 INFO L479 AbstractCegarLoop]: Abstraction has has 84 places, 140 transitions [2020-02-10 22:50:25,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 22:50:25,813 INFO L129 PetriNetUnfolder]: 2256/3137 cut-off events. [2020-02-10 22:50:25,813 INFO L130 PetriNetUnfolder]: For 3118/3118 co-relation queries the response was YES. [2020-02-10 22:50:25,813 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 22:50:25,814 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 22:50:25,814 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 22:50:25,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:50:25,814 INFO L82 PathProgramCache]: Analyzing trace with hash -603504081, now seen corresponding path program 1 times [2020-02-10 22:50:25,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:50:25,815 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238764889] [2020-02-10 22:50:25,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:50:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:50:25,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:50:25,860 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238764889] [2020-02-10 22:50:25,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:50:25,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 22:50:25,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902565329] [2020-02-10 22:50:25,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 22:50:25,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:50:25,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 22:50:25,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:50:25,862 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 207 [2020-02-10 22:50:25,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 140 transitions. Second operand 3 states. [2020-02-10 22:50:25,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 22:50:25,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 207 [2020-02-10 22:50:25,863 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 22:50:26,458 INFO L129 PetriNetUnfolder]: 2020/2845 cut-off events. [2020-02-10 22:50:26,459 INFO L130 PetriNetUnfolder]: For 3416/3416 co-relation queries the response was YES. [2020-02-10 22:50:26,475 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5946 conditions, 2845 events. 2020/2845 cut-off events. For 3416/3416 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 13531 event pairs. 42/2887 useless extension candidates. Maximal degree in co-relation 5914. Up to 660 conditions per place. [2020-02-10 22:50:26,508 INFO L145 encePairwiseOnDemand]: 202/207 looper letters, 8 selfloop transitions, 1 changer transitions 0/136 dead transitions. [2020-02-10 22:50:26,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 22:50:26,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 22:50:26,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2020-02-10 22:50:26,510 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9581320450885669 [2020-02-10 22:50:26,510 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2020-02-10 22:50:26,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2020-02-10 22:50:26,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 22:50:26,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2020-02-10 22:50:26,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 22:50:26,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 22:50:26,514 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 22:50:26,514 INFO L178 Difference]: Start difference. First operand has 84 places, 140 transitions. Second operand 3 states and 595 transitions. [2020-02-10 22:50:26,515 INFO L206 Difference]: Finished difference. Result has 86 places, 136 transitions [2020-02-10 22:50:26,515 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=653, PETRI_PLACES=86, PETRI_TRANSITIONS=136} [2020-02-10 22:50:26,516 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 86 places, 136 transitions [2020-02-10 22:50:27,081 INFO L129 PetriNetUnfolder]: 2020/2845 cut-off events. [2020-02-10 22:50:27,082 INFO L130 PetriNetUnfolder]: For 2826/2826 co-relation queries the response was YES. [2020-02-10 22:50:27,107 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5714 conditions, 2845 events. 2020/2845 cut-off events. For 2826/2826 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 12401 event pairs. 0/2845 useless extension candidates. Maximal degree in co-relation 5682. Up to 660 conditions per place. [2020-02-10 22:50:27,107 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 136 transitions [2020-02-10 22:50:27,148 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 136 transitions [2020-02-10 22:50:27,148 INFO L479 AbstractCegarLoop]: Abstraction has has 86 places, 136 transitions [2020-02-10 22:50:27,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 22:50:27,714 INFO L129 PetriNetUnfolder]: 2020/2844 cut-off events. [2020-02-10 22:50:27,715 INFO L130 PetriNetUnfolder]: For 2826/2826 co-relation queries the response was YES. [2020-02-10 22:50:27,715 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 22:50:27,715 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 22:50:27,715 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 22:50:27,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:50:27,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1815581993, now seen corresponding path program 1 times [2020-02-10 22:50:27,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:50:27,716 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061648127] [2020-02-10 22:50:27,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:50:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:50:27,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:50:27,751 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061648127] [2020-02-10 22:50:27,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:50:27,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 22:50:27,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661871545] [2020-02-10 22:50:27,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 22:50:27,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:50:27,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 22:50:27,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:50:27,758 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 207 [2020-02-10 22:50:27,759 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 136 transitions. Second operand 3 states. [2020-02-10 22:50:27,759 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 22:50:27,759 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 207 [2020-02-10 22:50:27,759 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 22:50:27,888 INFO L129 PetriNetUnfolder]: 525/854 cut-off events. [2020-02-10 22:50:27,888 INFO L130 PetriNetUnfolder]: For 1483/1483 co-relation queries the response was YES. [2020-02-10 22:50:27,893 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1801 conditions, 854 events. 525/854 cut-off events. For 1483/1483 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3689 event pairs. 171/1025 useless extension candidates. Maximal degree in co-relation 1768. Up to 165 conditions per place. [2020-02-10 22:50:27,903 INFO L145 encePairwiseOnDemand]: 197/207 looper letters, 3 selfloop transitions, 1 changer transitions 0/127 dead transitions. [2020-02-10 22:50:27,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 22:50:27,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 22:50:27,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2020-02-10 22:50:27,905 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9581320450885669 [2020-02-10 22:50:27,905 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2020-02-10 22:50:27,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2020-02-10 22:50:27,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 22:50:27,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2020-02-10 22:50:27,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 22:50:27,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 22:50:27,908 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 22:50:27,908 INFO L178 Difference]: Start difference. First operand has 86 places, 136 transitions. Second operand 3 states and 595 transitions. [2020-02-10 22:50:27,909 INFO L206 Difference]: Finished difference. Result has 88 places, 127 transitions [2020-02-10 22:50:27,910 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=610, PETRI_PLACES=88, PETRI_TRANSITIONS=127} [2020-02-10 22:50:27,910 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 88 places, 127 transitions [2020-02-10 22:50:27,997 INFO L129 PetriNetUnfolder]: 525/854 cut-off events. [2020-02-10 22:50:27,997 INFO L130 PetriNetUnfolder]: For 836/836 co-relation queries the response was YES. [2020-02-10 22:50:28,002 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1734 conditions, 854 events. 525/854 cut-off events. For 836/836 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3456 event pairs. 0/854 useless extension candidates. Maximal degree in co-relation 1701. Up to 165 conditions per place. [2020-02-10 22:50:28,003 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 127 transitions [2020-02-10 22:50:28,012 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 127 transitions [2020-02-10 22:50:28,013 INFO L479 AbstractCegarLoop]: Abstraction has has 88 places, 127 transitions [2020-02-10 22:50:28,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 22:50:28,093 INFO L129 PetriNetUnfolder]: 525/853 cut-off events. [2020-02-10 22:50:28,093 INFO L130 PetriNetUnfolder]: For 836/836 co-relation queries the response was YES. [2020-02-10 22:50:28,093 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 22:50:28,094 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 22:50:28,094 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 22:50:28,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:50:28,094 INFO L82 PathProgramCache]: Analyzing trace with hash -211322695, now seen corresponding path program 1 times [2020-02-10 22:50:28,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:50:28,095 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210625630] [2020-02-10 22:50:28,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:50:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:50:28,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:50:28,130 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210625630] [2020-02-10 22:50:28,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:50:28,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 22:50:28,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661884384] [2020-02-10 22:50:28,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 22:50:28,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:50:28,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 22:50:28,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:50:28,133 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 207 [2020-02-10 22:50:28,133 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 127 transitions. Second operand 3 states. [2020-02-10 22:50:28,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 22:50:28,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 207 [2020-02-10 22:50:28,133 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 22:50:28,267 INFO L129 PetriNetUnfolder]: 509/833 cut-off events. [2020-02-10 22:50:28,267 INFO L130 PetriNetUnfolder]: For 965/965 co-relation queries the response was YES. [2020-02-10 22:50:28,272 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1761 conditions, 833 events. 509/833 cut-off events. For 965/965 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3631 event pairs. 5/838 useless extension candidates. Maximal degree in co-relation 1726. Up to 165 conditions per place. [2020-02-10 22:50:28,282 INFO L145 encePairwiseOnDemand]: 204/207 looper letters, 10 selfloop transitions, 1 changer transitions 0/125 dead transitions. [2020-02-10 22:50:28,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 22:50:28,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 22:50:28,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2020-02-10 22:50:28,284 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9581320450885669 [2020-02-10 22:50:28,284 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2020-02-10 22:50:28,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2020-02-10 22:50:28,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 22:50:28,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2020-02-10 22:50:28,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 22:50:28,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 22:50:28,288 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 22:50:28,288 INFO L178 Difference]: Start difference. First operand has 88 places, 127 transitions. Second operand 3 states and 595 transitions. [2020-02-10 22:50:28,289 INFO L206 Difference]: Finished difference. Result has 90 places, 125 transitions [2020-02-10 22:50:28,289 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=602, PETRI_PLACES=90, PETRI_TRANSITIONS=125} [2020-02-10 22:50:28,289 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 90 places, 125 transitions [2020-02-10 22:50:28,367 INFO L129 PetriNetUnfolder]: 509/833 cut-off events. [2020-02-10 22:50:28,367 INFO L130 PetriNetUnfolder]: For 816/816 co-relation queries the response was YES. [2020-02-10 22:50:28,372 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1694 conditions, 833 events. 509/833 cut-off events. For 816/816 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3377 event pairs. 0/833 useless extension candidates. Maximal degree in co-relation 1663. Up to 165 conditions per place. [2020-02-10 22:50:28,373 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 125 transitions [2020-02-10 22:50:28,382 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 125 transitions [2020-02-10 22:50:28,382 INFO L479 AbstractCegarLoop]: Abstraction has has 90 places, 125 transitions [2020-02-10 22:50:28,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 22:50:28,460 INFO L129 PetriNetUnfolder]: 509/832 cut-off events. [2020-02-10 22:50:28,460 INFO L130 PetriNetUnfolder]: For 816/816 co-relation queries the response was YES. [2020-02-10 22:50:28,460 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 22:50:28,460 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 22:50:28,460 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 22:50:28,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:50:28,461 INFO L82 PathProgramCache]: Analyzing trace with hash 273579401, now seen corresponding path program 1 times [2020-02-10 22:50:28,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:50:28,461 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123572571] [2020-02-10 22:50:28,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:50:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:50:28,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:50:28,498 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123572571] [2020-02-10 22:50:28,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:50:28,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 22:50:28,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193902025] [2020-02-10 22:50:28,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 22:50:28,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:50:28,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 22:50:28,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:50:28,500 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 207 [2020-02-10 22:50:28,501 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 125 transitions. Second operand 3 states. [2020-02-10 22:50:28,501 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 22:50:28,501 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 207 [2020-02-10 22:50:28,501 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 22:50:28,537 INFO L129 PetriNetUnfolder]: 68/172 cut-off events. [2020-02-10 22:50:28,537 INFO L130 PetriNetUnfolder]: For 348/348 co-relation queries the response was YES. [2020-02-10 22:50:28,538 INFO L76 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 172 events. 68/172 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 517 event pairs. 56/228 useless extension candidates. Maximal degree in co-relation 354. Up to 22 conditions per place. [2020-02-10 22:50:28,541 INFO L145 encePairwiseOnDemand]: 196/207 looper letters, 2 selfloop transitions, 1 changer transitions 0/115 dead transitions. [2020-02-10 22:50:28,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 22:50:28,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 22:50:28,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2020-02-10 22:50:28,543 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9581320450885669 [2020-02-10 22:50:28,543 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2020-02-10 22:50:28,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2020-02-10 22:50:28,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 22:50:28,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2020-02-10 22:50:28,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 22:50:28,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 22:50:28,546 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 22:50:28,546 INFO L178 Difference]: Start difference. First operand has 90 places, 125 transitions. Second operand 3 states and 595 transitions. [2020-02-10 22:50:28,547 INFO L206 Difference]: Finished difference. Result has 92 places, 115 transitions [2020-02-10 22:50:28,547 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=554, PETRI_PLACES=92, PETRI_TRANSITIONS=115} [2020-02-10 22:50:28,548 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 92 places, 115 transitions [2020-02-10 22:50:28,566 INFO L129 PetriNetUnfolder]: 68/172 cut-off events. [2020-02-10 22:50:28,566 INFO L130 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2020-02-10 22:50:28,568 INFO L76 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 172 events. 68/172 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 494 event pairs. 0/172 useless extension candidates. Maximal degree in co-relation 342. Up to 22 conditions per place. [2020-02-10 22:50:28,568 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 115 transitions [2020-02-10 22:50:28,572 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 115 transitions [2020-02-10 22:50:28,572 INFO L479 AbstractCegarLoop]: Abstraction has has 92 places, 115 transitions [2020-02-10 22:50:28,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 22:50:28,587 INFO L129 PetriNetUnfolder]: 68/171 cut-off events. [2020-02-10 22:50:28,587 INFO L130 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2020-02-10 22:50:28,587 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 22:50:28,587 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 22:50:28,587 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 22:50:28,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:50:28,588 INFO L82 PathProgramCache]: Analyzing trace with hash 220168813, now seen corresponding path program 1 times [2020-02-10 22:50:28,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:50:28,588 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65046285] [2020-02-10 22:50:28,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:50:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:50:28,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:50:28,616 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65046285] [2020-02-10 22:50:28,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:50:28,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 22:50:28,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059253362] [2020-02-10 22:50:28,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 22:50:28,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:50:28,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 22:50:28,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:50:28,618 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 207 [2020-02-10 22:50:28,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 115 transitions. Second operand 3 states. [2020-02-10 22:50:28,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 22:50:28,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 207 [2020-02-10 22:50:28,618 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 22:50:28,642 INFO L129 PetriNetUnfolder]: 1/39 cut-off events. [2020-02-10 22:50:28,643 INFO L130 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2020-02-10 22:50:28,643 INFO L76 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 39 events. 1/39 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs. 12/51 useless extension candidates. Maximal degree in co-relation 78. Up to 3 conditions per place. [2020-02-10 22:50:28,645 INFO L145 encePairwiseOnDemand]: 195/207 looper letters, 1 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2020-02-10 22:50:28,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 22:50:28,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 22:50:28,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2020-02-10 22:50:28,647 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9581320450885669 [2020-02-10 22:50:28,647 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2020-02-10 22:50:28,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2020-02-10 22:50:28,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 22:50:28,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2020-02-10 22:50:28,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 22:50:28,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 22:50:28,650 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 22:50:28,650 INFO L178 Difference]: Start difference. First operand has 92 places, 115 transitions. Second operand 3 states and 595 transitions. [2020-02-10 22:50:28,651 INFO L206 Difference]: Finished difference. Result has 94 places, 39 transitions [2020-02-10 22:50:28,652 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=94, PETRI_TRANSITIONS=39} [2020-02-10 22:50:28,652 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 94 places, 39 transitions [2020-02-10 22:50:28,658 INFO L129 PetriNetUnfolder]: 1/39 cut-off events. [2020-02-10 22:50:28,658 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2020-02-10 22:50:28,659 INFO L76 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 39 events. 1/39 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs. 0/39 useless extension candidates. Maximal degree in co-relation 77. Up to 3 conditions per place. [2020-02-10 22:50:28,659 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 39 transitions [2020-02-10 22:50:28,660 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 39 transitions [2020-02-10 22:50:28,660 INFO L479 AbstractCegarLoop]: Abstraction has has 94 places, 39 transitions [2020-02-10 22:50:28,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 22:50:28,665 INFO L129 PetriNetUnfolder]: 1/38 cut-off events. [2020-02-10 22:50:28,666 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2020-02-10 22:50:28,666 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 22:50:28,666 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 22:50:28,666 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 22:50:28,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:50:28,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1666317731, now seen corresponding path program 1 times [2020-02-10 22:50:28,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:50:28,667 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971948505] [2020-02-10 22:50:28,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:50:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:50:28,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:50:28,743 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971948505] [2020-02-10 22:50:28,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:50:28,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 22:50:28,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928699980] [2020-02-10 22:50:28,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 22:50:28,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:50:28,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 22:50:28,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:50:28,746 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 207 [2020-02-10 22:50:28,746 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 39 transitions. Second operand 3 states. [2020-02-10 22:50:28,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 22:50:28,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 207 [2020-02-10 22:50:28,747 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 22:50:28,760 INFO L129 PetriNetUnfolder]: 0/37 cut-off events. [2020-02-10 22:50:28,761 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2020-02-10 22:50:28,761 INFO L76 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 37 events. 0/37 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs. 1/38 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2020-02-10 22:50:28,763 INFO L145 encePairwiseOnDemand]: 205/207 looper letters, 1 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2020-02-10 22:50:28,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 22:50:28,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 22:50:28,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 585 transitions. [2020-02-10 22:50:28,766 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9420289855072463 [2020-02-10 22:50:28,766 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 585 transitions. [2020-02-10 22:50:28,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 585 transitions. [2020-02-10 22:50:28,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 22:50:28,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 585 transitions. [2020-02-10 22:50:28,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 22:50:28,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 22:50:28,769 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 22:50:28,769 INFO L178 Difference]: Start difference. First operand has 94 places, 39 transitions. Second operand 3 states and 585 transitions. [2020-02-10 22:50:28,769 INFO L206 Difference]: Finished difference. Result has 96 places, 37 transitions [2020-02-10 22:50:28,770 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=96, PETRI_TRANSITIONS=37} [2020-02-10 22:50:28,770 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 96 places, 37 transitions [2020-02-10 22:50:28,775 INFO L129 PetriNetUnfolder]: 0/37 cut-off events. [2020-02-10 22:50:28,775 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2020-02-10 22:50:28,776 INFO L76 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 37 events. 0/37 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs. 0/37 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2020-02-10 22:50:28,777 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 37 transitions [2020-02-10 22:50:28,778 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 37 transitions [2020-02-10 22:50:28,778 INFO L479 AbstractCegarLoop]: Abstraction has has 96 places, 37 transitions [2020-02-10 22:50:28,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 22:50:28,783 INFO L129 PetriNetUnfolder]: 0/36 cut-off events. [2020-02-10 22:50:28,784 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2020-02-10 22:50:28,784 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 22:50:28,784 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 22:50:28,784 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 22:50:28,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:50:28,785 INFO L82 PathProgramCache]: Analyzing trace with hash 957070245, now seen corresponding path program 1 times [2020-02-10 22:50:28,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:50:28,785 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678643909] [2020-02-10 22:50:28,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:50:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:50:29,348 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 29 [2020-02-10 22:50:29,509 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 33 [2020-02-10 22:50:29,678 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 36 [2020-02-10 22:50:29,878 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 39 [2020-02-10 22:50:30,044 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 40 [2020-02-10 22:50:30,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:50:30,060 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678643909] [2020-02-10 22:50:30,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:50:30,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-02-10 22:50:30,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820979730] [2020-02-10 22:50:30,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-02-10 22:50:30,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:50:30,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-02-10 22:50:30,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-02-10 22:50:30,064 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 207 [2020-02-10 22:50:30,066 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 37 transitions. Second operand 14 states. [2020-02-10 22:50:30,066 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 22:50:30,066 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 207 [2020-02-10 22:50:30,066 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 22:51:21,523 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-02-10 22:51:26,209 INFO L129 PetriNetUnfolder]: 27651/34833 cut-off events. [2020-02-10 22:51:26,210 INFO L130 PetriNetUnfolder]: For 1028/1028 co-relation queries the response was YES. [2020-02-10 22:51:26,458 INFO L76 FinitePrefix]: Finished finitePrefix Result has 69714 conditions, 34833 events. 27651/34833 cut-off events. For 1028/1028 co-relation queries the response was YES. Maximal size of possible extension queue 1895. Compared 171005 event pairs. 1/34211 useless extension candidates. Maximal degree in co-relation 69682. Up to 12289 conditions per place. [2020-02-10 22:51:26,945 INFO L145 encePairwiseOnDemand]: 194/207 looper letters, 77 selfloop transitions, 11 changer transitions 1/113 dead transitions. [2020-02-10 22:51:26,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-02-10 22:51:26,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-02-10 22:51:26,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2624 transitions. [2020-02-10 22:51:26,953 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9054520358868184 [2020-02-10 22:51:26,953 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2624 transitions. [2020-02-10 22:51:26,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2624 transitions. [2020-02-10 22:51:26,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 22:51:26,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2624 transitions. [2020-02-10 22:51:26,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 15 states. [2020-02-10 22:51:26,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 15 states. [2020-02-10 22:51:26,964 INFO L81 ComplementDD]: Finished complementDD. Result 15 states. [2020-02-10 22:51:26,964 INFO L178 Difference]: Start difference. First operand has 96 places, 37 transitions. Second operand 14 states and 2624 transitions. [2020-02-10 22:51:26,965 INFO L206 Difference]: Finished difference. Result has 121 places, 47 transitions [2020-02-10 22:51:26,965 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=255, PETRI_PLACES=121, PETRI_TRANSITIONS=47} [2020-02-10 22:51:26,965 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 121 places, 47 transitions [2020-02-10 22:51:26,989 INFO L129 PetriNetUnfolder]: 0/153 cut-off events. [2020-02-10 22:51:26,989 INFO L130 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2020-02-10 22:51:26,991 INFO L76 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 153 events. 0/153 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 731 event pairs. 0/135 useless extension candidates. Maximal degree in co-relation 342. Up to 13 conditions per place. [2020-02-10 22:51:26,991 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 47 transitions [2020-02-10 22:51:26,995 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 47 transitions [2020-02-10 22:51:26,995 INFO L479 AbstractCegarLoop]: Abstraction has has 120 places, 47 transitions [2020-02-10 22:51:26,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-02-10 22:51:27,026 INFO L129 PetriNetUnfolder]: 0/142 cut-off events. [2020-02-10 22:51:27,027 INFO L130 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2020-02-10 22:51:27,027 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 22:51:27,027 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 22:51:27,027 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 22:51:27,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:51:27,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1795431047, now seen corresponding path program 2 times [2020-02-10 22:51:27,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:51:27,029 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168275438] [2020-02-10 22:51:27,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:51:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:51:27,705 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-02-10 22:51:27,871 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 36 [2020-02-10 22:51:28,040 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2020-02-10 22:51:28,254 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 43 [2020-02-10 22:51:28,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:51:28,269 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168275438] [2020-02-10 22:51:28,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:51:28,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-02-10 22:51:28,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680135260] [2020-02-10 22:51:28,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-02-10 22:51:28,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:51:28,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-02-10 22:51:28,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-02-10 22:51:28,274 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 207 [2020-02-10 22:51:28,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 47 transitions. Second operand 14 states. [2020-02-10 22:51:28,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 22:51:28,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 207 [2020-02-10 22:51:28,276 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 22:54:05,892 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-02-10 22:54:12,705 INFO L129 PetriNetUnfolder]: 36939/47034 cut-off events. [2020-02-10 22:54:12,705 INFO L130 PetriNetUnfolder]: For 56958/59288 co-relation queries the response was YES. [2020-02-10 22:54:13,161 INFO L76 FinitePrefix]: Finished finitePrefix Result has 143262 conditions, 47034 events. 36939/47034 cut-off events. For 56958/59288 co-relation queries the response was YES. Maximal size of possible extension queue 2459. Compared 250652 event pairs. 1/46413 useless extension candidates. Maximal degree in co-relation 143217. Up to 16906 conditions per place. [2020-02-10 22:54:14,001 INFO L145 encePairwiseOnDemand]: 194/207 looper letters, 118 selfloop transitions, 14 changer transitions 1/157 dead transitions. [2020-02-10 22:54:14,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-02-10 22:54:14,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-02-10 22:54:14,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2624 transitions. [2020-02-10 22:54:14,008 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9054520358868184 [2020-02-10 22:54:14,008 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2624 transitions. [2020-02-10 22:54:14,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2624 transitions. [2020-02-10 22:54:14,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 22:54:14,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2624 transitions. [2020-02-10 22:54:14,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 15 states. [2020-02-10 22:54:14,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 15 states. [2020-02-10 22:54:14,018 INFO L81 ComplementDD]: Finished complementDD. Result 15 states. [2020-02-10 22:54:14,018 INFO L178 Difference]: Start difference. First operand has 120 places, 47 transitions. Second operand 14 states and 2624 transitions. [2020-02-10 22:54:14,019 INFO L206 Difference]: Finished difference. Result has 145 places, 60 transitions [2020-02-10 22:54:14,020 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=401, PETRI_PLACES=145, PETRI_TRANSITIONS=60} [2020-02-10 22:54:14,020 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 145 places, 60 transitions [2020-02-10 22:54:14,097 INFO L129 PetriNetUnfolder]: 0/448 cut-off events. [2020-02-10 22:54:14,097 INFO L130 PetriNetUnfolder]: For 550/565 co-relation queries the response was YES. [2020-02-10 22:54:14,101 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 448 events. 0/448 cut-off events. For 550/565 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3882 event pairs. 0/384 useless extension candidates. Maximal degree in co-relation 1071. Up to 48 conditions per place. [2020-02-10 22:54:14,101 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 60 transitions [2020-02-10 22:54:14,108 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 60 transitions [2020-02-10 22:54:14,109 INFO L479 AbstractCegarLoop]: Abstraction has has 144 places, 60 transitions [2020-02-10 22:54:14,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-02-10 22:54:14,162 INFO L129 PetriNetUnfolder]: 0/402 cut-off events. [2020-02-10 22:54:14,163 INFO L130 PetriNetUnfolder]: For 550/565 co-relation queries the response was YES. [2020-02-10 22:54:14,163 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 22:54:14,163 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 22:54:14,163 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 22:54:14,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:54:14,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1869332639, now seen corresponding path program 3 times [2020-02-10 22:54:14,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:54:14,164 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002415133] [2020-02-10 22:54:14,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:54:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:54:14,808 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-02-10 22:54:15,100 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2020-02-10 22:54:15,287 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 43 [2020-02-10 22:54:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:54:15,302 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002415133] [2020-02-10 22:54:15,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:54:15,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-02-10 22:54:15,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108348600] [2020-02-10 22:54:15,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-02-10 22:54:15,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:54:15,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-02-10 22:54:15,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-02-10 22:54:15,306 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 207 [2020-02-10 22:54:15,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 60 transitions. Second operand 14 states. [2020-02-10 22:54:15,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 22:54:15,308 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 207 [2020-02-10 22:54:15,308 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 22:58:14,096 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-02-10 22:58:22,229 INFO L129 PetriNetUnfolder]: 36937/47068 cut-off events. [2020-02-10 22:58:22,229 INFO L130 PetriNetUnfolder]: For 157771/160101 co-relation queries the response was YES. [2020-02-10 22:58:22,795 INFO L76 FinitePrefix]: Finished finitePrefix Result has 190135 conditions, 47068 events. 36937/47068 cut-off events. For 157771/160101 co-relation queries the response was YES. Maximal size of possible extension queue 2459. Compared 251636 event pairs. 1/46447 useless extension candidates. Maximal degree in co-relation 190077. Up to 16906 conditions per place. [2020-02-10 22:58:23,838 INFO L145 encePairwiseOnDemand]: 194/207 looper letters, 118 selfloop transitions, 15 changer transitions 1/158 dead transitions. [2020-02-10 22:58:23,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-02-10 22:58:23,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-02-10 22:58:23,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2624 transitions. [2020-02-10 22:58:23,844 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9054520358868184 [2020-02-10 22:58:23,844 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2624 transitions. [2020-02-10 22:58:23,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2624 transitions. [2020-02-10 22:58:23,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 22:58:23,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2624 transitions. [2020-02-10 22:58:23,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 15 states. [2020-02-10 22:58:23,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 15 states. [2020-02-10 22:58:23,854 INFO L81 ComplementDD]: Finished complementDD. Result 15 states. [2020-02-10 22:58:23,855 INFO L178 Difference]: Start difference. First operand has 144 places, 60 transitions. Second operand 14 states and 2624 transitions. [2020-02-10 22:58:23,855 INFO L206 Difference]: Finished difference. Result has 161 places, 62 transitions [2020-02-10 22:58:23,856 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=460, PETRI_PLACES=161, PETRI_TRANSITIONS=62} [2020-02-10 22:58:23,856 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 161 places, 62 transitions [2020-02-10 22:58:23,925 INFO L129 PetriNetUnfolder]: 0/485 cut-off events. [2020-02-10 22:58:23,925 INFO L130 PetriNetUnfolder]: For 749/766 co-relation queries the response was YES. [2020-02-10 22:58:23,930 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 485 events. 0/485 cut-off events. For 749/766 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4294 event pairs. 0/419 useless extension candidates. Maximal degree in co-relation 1248. Up to 50 conditions per place. [2020-02-10 22:58:23,930 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 62 transitions [2020-02-10 22:58:23,938 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 62 transitions [2020-02-10 22:58:23,938 INFO L479 AbstractCegarLoop]: Abstraction has has 160 places, 62 transitions [2020-02-10 22:58:23,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-02-10 22:58:23,996 INFO L129 PetriNetUnfolder]: 0/437 cut-off events. [2020-02-10 22:58:23,996 INFO L130 PetriNetUnfolder]: For 753/767 co-relation queries the response was YES. [2020-02-10 22:58:23,996 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 22:58:23,996 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 22:58:23,996 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-02-10 22:58:23,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:58:23,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1903856841, now seen corresponding path program 4 times [2020-02-10 22:58:23,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:58:23,997 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659304877] [2020-02-10 22:58:23,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:58:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:58:24,681 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-02-10 22:58:24,850 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 40 [2020-02-10 22:58:25,021 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 41 [2020-02-10 22:58:25,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:58:25,033 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659304877] [2020-02-10 22:58:25,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:58:25,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-02-10 22:58:25,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182230655] [2020-02-10 22:58:25,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-02-10 22:58:25,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:58:25,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-02-10 22:58:25,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-02-10 22:58:25,038 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 207 [2020-02-10 22:58:25,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 62 transitions. Second operand 14 states. [2020-02-10 22:58:25,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 22:58:25,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 207 [2020-02-10 22:58:25,040 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2020-02-10 22:59:40,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 22:59:40,078 WARN L544 AbstractCegarLoop]: Verification canceled [2020-02-10 22:59:40,081 WARN L227 ceAbstractionStarter]: Timeout [2020-02-10 22:59:40,081 INFO L202 PluginConnector]: Adding new model example_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 10:59:40 BasicIcfg [2020-02-10 22:59:40,081 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-02-10 22:59:40,083 INFO L168 Benchmark]: Toolchain (without parser) took 836990.18 ms. Allocated memory was 145.8 MB in the beginning and 3.1 GB in the end (delta: 2.9 GB). Free memory was 120.8 MB in the beginning and 2.4 GB in the end (delta: -2.3 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2020-02-10 22:59:40,083 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.43 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. [2020-02-10 22:59:40,084 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.51 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. [2020-02-10 22:59:40,085 INFO L168 Benchmark]: Boogie Preprocessor took 28.71 ms. Allocated memory is still 145.8 MB. Free memory was 118.7 MB in the beginning and 117.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-02-10 22:59:40,085 INFO L168 Benchmark]: RCFGBuilder took 385.89 ms. Allocated memory is still 145.8 MB. Free memory was 117.6 MB in the beginning and 101.5 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2020-02-10 22:59:40,086 INFO L168 Benchmark]: TraceAbstraction took 836525.44 ms. Allocated memory was 145.8 MB in the beginning and 3.1 GB in the end (delta: 2.9 GB). Free memory was 101.3 MB in the beginning and 2.4 GB in the end (delta: -2.3 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2020-02-10 22:59:40,089 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.43 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 43.51 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 28.71 ms. Allocated memory is still 145.8 MB. Free memory was 118.7 MB in the beginning and 117.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 385.89 ms. Allocated memory is still 145.8 MB. Free memory was 117.6 MB in the beginning and 101.5 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 836525.44 ms. Allocated memory was 145.8 MB in the beginning and 3.1 GB in the end (delta: 2.9 GB). Free memory was 101.3 MB in the beginning and 2.4 GB in the end (delta: -2.3 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 89.7s, 86 ProgramPointsBefore, 74 ProgramPointsAfterwards, 181 TransitionsBefore, 169 TransitionsAfterwards, 6600 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1716 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1782 CheckedPairsTotal, 12 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 37]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 37). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (14states, 181/207 universal loopers) in iteration 15,while PetriNetUnfolder was constructing finite prefix that currently has 105891 conditions, 24568 events (20470/24567 cut-off events. For 120538/122868 co-relation queries the response was YES. Maximal size of possible extension queue 3314. Compared 121848 event pairs. 0/27266 useless extension candidates. Maximal degree in co-relation 105835. Up to 12557 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. Result: TIMEOUT, OverallTime: 836.1s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 585.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 136.0s, HoareTripleCheckerStatistics: 302 SDtfs, 332 SDslu, 259 SDs, 0 SdLazy, 477 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 34.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 3 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 555 NumberOfCodeBlocks, 555 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 540 ConstructedInterpolants, 0 QuantifiedInterpolants, 230112 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown