/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_11.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d9e330d [2020-02-10 23:14:14,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-02-10 23:14:14,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-02-10 23:14:14,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-02-10 23:14:14,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-02-10 23:14:14,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-02-10 23:14:14,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-02-10 23:14:14,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-02-10 23:14:14,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-02-10 23:14:14,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-02-10 23:14:14,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-02-10 23:14:14,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-02-10 23:14:14,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-02-10 23:14:14,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-02-10 23:14:14,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-02-10 23:14:15,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-02-10 23:14:15,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-02-10 23:14:15,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-02-10 23:14:15,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-02-10 23:14:15,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-02-10 23:14:15,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-02-10 23:14:15,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-02-10 23:14:15,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-02-10 23:14:15,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-02-10 23:14:15,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-02-10 23:14:15,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-02-10 23:14:15,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-02-10 23:14:15,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-02-10 23:14:15,039 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2020-02-10 23:14:15,074 INFO L113 SettingsManager]: Loading preferences was successful [2020-02-10 23:14:15,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-02-10 23:14:15,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-02-10 23:14:15,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-02-10 23:14:15,078 INFO L138 SettingsManager]: * Use SBE=true [2020-02-10 23:14:15,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-02-10 23:14:15,079 INFO L138 SettingsManager]: * sizeof long=4 [2020-02-10 23:14:15,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-02-10 23:14:15,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-02-10 23:14:15,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-02-10 23:14:15,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-02-10 23:14:15,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-02-10 23:14:15,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-02-10 23:14:15,080 INFO L138 SettingsManager]: * sizeof long double=12 [2020-02-10 23:14:15,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-02-10 23:14:15,080 INFO L138 SettingsManager]: * Use constant arrays=true [2020-02-10 23:14:15,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-02-10 23:14:15,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-02-10 23:14:15,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-02-10 23:14:15,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-02-10 23:14:15,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-02-10 23:14:15,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-10 23:14:15,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-02-10 23:14:15,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-02-10 23:14:15,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-02-10 23:14:15,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-02-10 23:14:15,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-02-10 23:14:15,086 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-02-10 23:14:15,086 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-02-10 23:14:15,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-02-10 23:14:15,384 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-02-10 23:14:15,396 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-02-10 23:14:15,400 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-02-10 23:14:15,401 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-02-10 23:14:15,402 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-02-10 23:14:15,402 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_11.bpl [2020-02-10 23:14:15,403 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_11.bpl' [2020-02-10 23:14:15,435 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-02-10 23:14:15,439 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-02-10 23:14:15,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-02-10 23:14:15,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-02-10 23:14:15,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-02-10 23:14:15,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:14:15" (1/1) ... [2020-02-10 23:14:15,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:14:15" (1/1) ... [2020-02-10 23:14:15,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-02-10 23:14:15,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-02-10 23:14:15,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-02-10 23:14:15,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-02-10 23:14:15,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:14:15" (1/1) ... [2020-02-10 23:14:15,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:14:15" (1/1) ... [2020-02-10 23:14:15,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:14:15" (1/1) ... [2020-02-10 23:14:15,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:14:15" (1/1) ... [2020-02-10 23:14:15,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:14:15" (1/1) ... [2020-02-10 23:14:15,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:14:15" (1/1) ... [2020-02-10 23:14:15,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:14:15" (1/1) ... [2020-02-10 23:14:15,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-02-10 23:14:15,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-02-10 23:14:15,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-02-10 23:14:15,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-02-10 23:14:15,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:14:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-10 23:14:15,602 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-02-10 23:14:15,603 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-02-10 23:14:15,604 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-02-10 23:14:15,605 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-02-10 23:14:15,605 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-02-10 23:14:15,605 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-02-10 23:14:15,606 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-02-10 23:14:15,606 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-02-10 23:14:15,606 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-02-10 23:14:15,606 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-02-10 23:14:15,606 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-02-10 23:14:15,607 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-02-10 23:14:15,607 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-02-10 23:14:15,607 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-02-10 23:14:15,607 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-02-10 23:14:15,608 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2020-02-10 23:14:15,608 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2020-02-10 23:14:15,608 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2020-02-10 23:14:15,608 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-02-10 23:14:15,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-02-10 23:14:15,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-02-10 23:14:15,609 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-02-10 23:14:15,610 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-02-10 23:14:15,610 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-02-10 23:14:15,611 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2020-02-10 23:14:15,612 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2020-02-10 23:14:15,612 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2020-02-10 23:14:15,613 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2020-02-10 23:14:15,613 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2020-02-10 23:14:15,613 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2020-02-10 23:14:15,614 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2020-02-10 23:14:15,614 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2020-02-10 23:14:15,614 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2020-02-10 23:14:15,614 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2020-02-10 23:14:15,615 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2020-02-10 23:14:15,615 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2020-02-10 23:14:15,616 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-02-10 23:14:15,954 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-02-10 23:14:15,955 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-02-10 23:14:15,959 INFO L202 PluginConnector]: Adding new model example_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:14:15 BoogieIcfgContainer [2020-02-10 23:14:15,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-02-10 23:14:15,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-02-10 23:14:15,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-02-10 23:14:15,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-02-10 23:14:15,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:14:15" (1/2) ... [2020-02-10 23:14:15,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77387e65 and model type example_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:14:15, skipping insertion in model container [2020-02-10 23:14:15,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:14:15" (2/2) ... [2020-02-10 23:14:15,967 INFO L109 eAbstractionObserver]: Analyzing ICFG example_11.bpl [2020-02-10 23:14:15,977 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-02-10 23:14:15,984 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-02-10 23:14:15,985 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-02-10 23:14:16,279 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-02-10 23:14:16,302 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-02-10 23:14:16,303 INFO L376 AbstractCegarLoop]: Hoare is false [2020-02-10 23:14:16,303 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-02-10 23:14:16,303 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-02-10 23:14:16,303 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-02-10 23:14:16,303 INFO L380 AbstractCegarLoop]: Difference is false [2020-02-10 23:14:16,303 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-02-10 23:14:16,304 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-02-10 23:14:16,335 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 92 places, 168 transitions [2020-02-10 23:14:27,256 INFO L129 PetriNetUnfolder]: 9217/11300 cut-off events. [2020-02-10 23:14:27,263 INFO L130 PetriNetUnfolder]: For 11264/11264 co-relation queries the response was YES. [2020-02-10 23:14:27,391 INFO L76 FinitePrefix]: Finished finitePrefix Result has 22598 conditions, 11300 events. 9217/11300 cut-off events. For 11264/11264 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 45887 event pairs. 0/11299 useless extension candidates. Maximal degree in co-relation 10292. Up to 2772 conditions per place. [2020-02-10 23:14:27,391 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 168 transitions [2020-02-10 23:14:27,652 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 155 transitions [2020-02-10 23:14:27,656 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 155 transitions [2020-02-10 23:14:27,656 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 79 places, 155 transitions [2020-02-10 23:14:37,910 INFO L129 PetriNetUnfolder]: 9217/11298 cut-off events. [2020-02-10 23:14:37,911 INFO L130 PetriNetUnfolder]: For 11264/11264 co-relation queries the response was YES. [2020-02-10 23:14:38,017 INFO L76 FinitePrefix]: Finished finitePrefix Result has 22596 conditions, 11298 events. 9217/11298 cut-off events. For 11264/11264 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 44452 event pairs. 0/11298 useless extension candidates. Maximal degree in co-relation 10292. Up to 2772 conditions per place. [2020-02-10 23:14:38,319 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 79 places, 155 transitions [2020-02-10 23:14:47,877 INFO L129 PetriNetUnfolder]: 9217/11298 cut-off events. [2020-02-10 23:14:47,877 INFO L130 PetriNetUnfolder]: For 11264/11264 co-relation queries the response was YES. [2020-02-10 23:14:47,960 INFO L76 FinitePrefix]: Finished finitePrefix Result has 22596 conditions, 11298 events. 9217/11298 cut-off events. For 11264/11264 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 44452 event pairs. 0/11298 useless extension candidates. Maximal degree in co-relation 10292. Up to 2772 conditions per place. [2020-02-10 23:14:48,141 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 5060 [2020-02-10 23:14:48,142 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-02-10 23:14:48,327 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1375 [2020-02-10 23:14:48,327 INFO L214 etLargeBlockEncoding]: Total number of compositions: 11 [2020-02-10 23:14:48,328 INFO L160 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20675 [2020-02-10 23:14:57,725 INFO L129 PetriNetUnfolder]: 9217/11286 cut-off events. [2020-02-10 23:14:57,725 INFO L130 PetriNetUnfolder]: For 11264/11264 co-relation queries the response was YES. [2020-02-10 23:14:57,726 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:14:57,726 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] [2020-02-10 23:14:57,727 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:14:57,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:14:57,734 INFO L82 PathProgramCache]: Analyzing trace with hash -588949957, now seen corresponding path program 1 times [2020-02-10 23:14:57,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:14:57,744 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272722122] [2020-02-10 23:14:57,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:14:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:14:57,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:14:57,894 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272722122] [2020-02-10 23:14:57,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:14:57,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:14:57,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898259231] [2020-02-10 23:14:57,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:14:57,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:14:57,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:14:57,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:14:57,925 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2020-02-10 23:14:57,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 144 transitions. Second operand 3 states. [2020-02-10 23:14:57,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:14:57,928 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2020-02-10 23:14:57,930 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:15:01,714 INFO L129 PetriNetUnfolder]: 4557/5779 cut-off events. [2020-02-10 23:15:01,715 INFO L130 PetriNetUnfolder]: For 8653/8653 co-relation queries the response was YES. [2020-02-10 23:15:01,752 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11747 conditions, 5779 events. 4557/5779 cut-off events. For 8653/8653 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 24427 event pairs. 848/6627 useless extension candidates. Maximal degree in co-relation 10260. Up to 1260 conditions per place. [2020-02-10 23:15:01,844 INFO L145 encePairwiseOnDemand]: 171/179 looper letters, 4 selfloop transitions, 1 changer transitions 0/137 dead transitions. [2020-02-10 23:15:01,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:15:01,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:15:01,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2020-02-10 23:15:01,863 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9553072625698324 [2020-02-10 23:15:01,864 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2020-02-10 23:15:01,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2020-02-10 23:15:01,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:15:01,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2020-02-10 23:15:01,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:15:01,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:15:01,882 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:15:01,885 INFO L178 Difference]: Start difference. First operand has 68 places, 144 transitions. Second operand 3 states and 513 transitions. [2020-02-10 23:15:01,888 INFO L206 Difference]: Finished difference. Result has 70 places, 137 transitions [2020-02-10 23:15:01,891 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=651, PETRI_PLACES=70, PETRI_TRANSITIONS=137} [2020-02-10 23:15:01,892 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 70 places, 137 transitions [2020-02-10 23:15:04,491 INFO L129 PetriNetUnfolder]: 4557/5779 cut-off events. [2020-02-10 23:15:04,491 INFO L130 PetriNetUnfolder]: For 5757/5757 co-relation queries the response was YES. [2020-02-10 23:15:04,522 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11571 conditions, 5779 events. 4557/5779 cut-off events. For 5757/5757 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 22362 event pairs. 0/5779 useless extension candidates. Maximal degree in co-relation 11533. Up to 1260 conditions per place. [2020-02-10 23:15:04,522 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 137 transitions [2020-02-10 23:15:04,605 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 137 transitions [2020-02-10 23:15:04,607 INFO L479 AbstractCegarLoop]: Abstraction has has 70 places, 137 transitions [2020-02-10 23:15:04,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:15:07,658 INFO L129 PetriNetUnfolder]: 4557/5778 cut-off events. [2020-02-10 23:15:07,659 INFO L130 PetriNetUnfolder]: For 5757/5757 co-relation queries the response was YES. [2020-02-10 23:15:07,659 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:15:07,659 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] [2020-02-10 23:15:07,660 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:15:07,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:15:07,660 INFO L82 PathProgramCache]: Analyzing trace with hash 519804281, now seen corresponding path program 1 times [2020-02-10 23:15:07,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:15:07,661 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711064677] [2020-02-10 23:15:07,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:15:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:15:07,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:15:07,737 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711064677] [2020-02-10 23:15:07,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:15:07,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:15:07,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982897554] [2020-02-10 23:15:07,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:15:07,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:15:07,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:15:07,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:15:07,741 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2020-02-10 23:15:07,742 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 137 transitions. Second operand 3 states. [2020-02-10 23:15:07,742 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:15:07,742 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2020-02-10 23:15:07,742 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:15:10,271 INFO L129 PetriNetUnfolder]: 3720/4812 cut-off events. [2020-02-10 23:15:10,271 INFO L130 PetriNetUnfolder]: For 6037/6037 co-relation queries the response was YES. [2020-02-10 23:15:10,302 INFO L76 FinitePrefix]: Finished finitePrefix Result has 10067 conditions, 4812 events. 3720/4812 cut-off events. For 6037/6037 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 20814 event pairs. 130/4942 useless extension candidates. Maximal degree in co-relation 10027. Up to 1260 conditions per place. [2020-02-10 23:15:10,364 INFO L145 encePairwiseOnDemand]: 174/179 looper letters, 7 selfloop transitions, 1 changer transitions 0/133 dead transitions. [2020-02-10 23:15:10,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:15:10,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:15:10,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2020-02-10 23:15:10,367 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9553072625698324 [2020-02-10 23:15:10,367 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2020-02-10 23:15:10,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2020-02-10 23:15:10,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:15:10,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2020-02-10 23:15:10,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:15:10,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:15:10,372 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:15:10,372 INFO L178 Difference]: Start difference. First operand has 70 places, 137 transitions. Second operand 3 states and 513 transitions. [2020-02-10 23:15:10,374 INFO L206 Difference]: Finished difference. Result has 72 places, 133 transitions [2020-02-10 23:15:10,374 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=633, PETRI_PLACES=72, PETRI_TRANSITIONS=133} [2020-02-10 23:15:10,375 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 72 places, 133 transitions [2020-02-10 23:15:12,059 INFO L129 PetriNetUnfolder]: 3720/4812 cut-off events. [2020-02-10 23:15:12,059 INFO L130 PetriNetUnfolder]: For 4791/4791 co-relation queries the response was YES. [2020-02-10 23:15:12,082 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9639 conditions, 4812 events. 3720/4812 cut-off events. For 4791/4791 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 19093 event pairs. 0/4812 useless extension candidates. Maximal degree in co-relation 9609. Up to 1260 conditions per place. [2020-02-10 23:15:12,082 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 133 transitions [2020-02-10 23:15:12,161 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 133 transitions [2020-02-10 23:15:12,161 INFO L479 AbstractCegarLoop]: Abstraction has has 72 places, 133 transitions [2020-02-10 23:15:12,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:15:14,345 INFO L129 PetriNetUnfolder]: 3720/4811 cut-off events. [2020-02-10 23:15:14,345 INFO L130 PetriNetUnfolder]: For 4791/4791 co-relation queries the response was YES. [2020-02-10 23:15:14,345 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:15:14,346 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] [2020-02-10 23:15:14,346 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:15:14,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:15:14,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1175399669, now seen corresponding path program 1 times [2020-02-10 23:15:14,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:15:14,347 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661214530] [2020-02-10 23:15:14,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:15:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:15:14,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:15:14,384 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661214530] [2020-02-10 23:15:14,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:15:14,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:15:14,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551014755] [2020-02-10 23:15:14,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:15:14,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:15:14,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:15:14,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:15:14,386 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2020-02-10 23:15:14,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 133 transitions. Second operand 3 states. [2020-02-10 23:15:14,387 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:15:14,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2020-02-10 23:15:14,387 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:15:16,301 INFO L129 PetriNetUnfolder]: 3488/4543 cut-off events. [2020-02-10 23:15:16,302 INFO L130 PetriNetUnfolder]: For 5490/5490 co-relation queries the response was YES. [2020-02-10 23:15:16,322 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9531 conditions, 4543 events. 3488/4543 cut-off events. For 5490/5490 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 19723 event pairs. 37/4580 useless extension candidates. Maximal degree in co-relation 9499. Up to 1260 conditions per place. [2020-02-10 23:15:16,370 INFO L145 encePairwiseOnDemand]: 175/179 looper letters, 8 selfloop transitions, 1 changer transitions 0/130 dead transitions. [2020-02-10 23:15:16,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:15:16,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:15:16,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2020-02-10 23:15:16,377 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9553072625698324 [2020-02-10 23:15:16,377 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2020-02-10 23:15:16,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2020-02-10 23:15:16,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:15:16,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2020-02-10 23:15:16,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:15:16,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:15:16,380 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:15:16,381 INFO L178 Difference]: Start difference. First operand has 72 places, 133 transitions. Second operand 3 states and 513 transitions. [2020-02-10 23:15:16,382 INFO L206 Difference]: Finished difference. Result has 74 places, 130 transitions [2020-02-10 23:15:16,382 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=620, PETRI_PLACES=74, PETRI_TRANSITIONS=130} [2020-02-10 23:15:16,382 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 74 places, 130 transitions [2020-02-10 23:15:18,210 INFO L129 PetriNetUnfolder]: 3488/4543 cut-off events. [2020-02-10 23:15:18,210 INFO L130 PetriNetUnfolder]: For 4523/4523 co-relation queries the response was YES. [2020-02-10 23:15:18,238 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9103 conditions, 4543 events. 3488/4543 cut-off events. For 4523/4523 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 18127 event pairs. 0/4543 useless extension candidates. Maximal degree in co-relation 9075. Up to 1260 conditions per place. [2020-02-10 23:15:18,239 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 130 transitions [2020-02-10 23:15:18,296 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 130 transitions [2020-02-10 23:15:18,296 INFO L479 AbstractCegarLoop]: Abstraction has has 74 places, 130 transitions [2020-02-10 23:15:18,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:15:20,087 INFO L129 PetriNetUnfolder]: 3488/4542 cut-off events. [2020-02-10 23:15:20,087 INFO L130 PetriNetUnfolder]: For 4523/4523 co-relation queries the response was YES. [2020-02-10 23:15:20,087 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:15:20,088 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] [2020-02-10 23:15:20,088 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:15:20,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:15:20,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1344755149, now seen corresponding path program 1 times [2020-02-10 23:15:20,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:15:20,089 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644784840] [2020-02-10 23:15:20,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:15:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:15:20,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:15:20,128 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644784840] [2020-02-10 23:15:20,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:15:20,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:15:20,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620564624] [2020-02-10 23:15:20,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:15:20,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:15:20,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:15:20,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:15:20,131 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2020-02-10 23:15:20,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 130 transitions. Second operand 3 states. [2020-02-10 23:15:20,132 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:15:20,132 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2020-02-10 23:15:20,132 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:15:20,948 INFO L129 PetriNetUnfolder]: 2424/3268 cut-off events. [2020-02-10 23:15:20,948 INFO L130 PetriNetUnfolder]: For 4255/4255 co-relation queries the response was YES. [2020-02-10 23:15:20,965 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6857 conditions, 3268 events. 2424/3268 cut-off events. For 4255/4255 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 14676 event pairs. 134/3402 useless extension candidates. Maximal degree in co-relation 6828. Up to 840 conditions per place. [2020-02-10 23:15:21,001 INFO L145 encePairwiseOnDemand]: 173/179 looper letters, 6 selfloop transitions, 1 changer transitions 0/125 dead transitions. [2020-02-10 23:15:21,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:15:21,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:15:21,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2020-02-10 23:15:21,003 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9553072625698324 [2020-02-10 23:15:21,003 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2020-02-10 23:15:21,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2020-02-10 23:15:21,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:15:21,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2020-02-10 23:15:21,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:15:21,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:15:21,006 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:15:21,006 INFO L178 Difference]: Start difference. First operand has 74 places, 130 transitions. Second operand 3 states and 513 transitions. [2020-02-10 23:15:21,007 INFO L206 Difference]: Finished difference. Result has 76 places, 125 transitions [2020-02-10 23:15:21,008 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=597, PETRI_PLACES=76, PETRI_TRANSITIONS=125} [2020-02-10 23:15:21,008 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 76 places, 125 transitions [2020-02-10 23:15:21,822 INFO L129 PetriNetUnfolder]: 2424/3268 cut-off events. [2020-02-10 23:15:21,822 INFO L130 PetriNetUnfolder]: For 3249/3249 co-relation queries the response was YES. [2020-02-10 23:15:21,843 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6555 conditions, 3268 events. 2424/3268 cut-off events. For 3249/3249 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 13435 event pairs. 0/3268 useless extension candidates. Maximal degree in co-relation 6526. Up to 840 conditions per place. [2020-02-10 23:15:21,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 125 transitions [2020-02-10 23:15:21,899 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 125 transitions [2020-02-10 23:15:21,900 INFO L479 AbstractCegarLoop]: Abstraction has has 76 places, 125 transitions [2020-02-10 23:15:21,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:15:22,757 INFO L129 PetriNetUnfolder]: 2424/3267 cut-off events. [2020-02-10 23:15:22,757 INFO L130 PetriNetUnfolder]: For 3249/3249 co-relation queries the response was YES. [2020-02-10 23:15:22,757 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:15:22,757 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] [2020-02-10 23:15:22,758 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:15:22,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:15:22,758 INFO L82 PathProgramCache]: Analyzing trace with hash 264125757, now seen corresponding path program 1 times [2020-02-10 23:15:22,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:15:22,758 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701852260] [2020-02-10 23:15:22,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:15:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:15:22,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:15:22,790 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701852260] [2020-02-10 23:15:22,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:15:22,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:15:22,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115369253] [2020-02-10 23:15:22,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:15:22,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:15:22,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:15:22,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:15:22,793 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2020-02-10 23:15:22,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 125 transitions. Second operand 3 states. [2020-02-10 23:15:22,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:15:22,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2020-02-10 23:15:22,794 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:15:22,964 INFO L129 PetriNetUnfolder]: 702/1044 cut-off events. [2020-02-10 23:15:22,964 INFO L130 PetriNetUnfolder]: For 1942/1942 co-relation queries the response was YES. [2020-02-10 23:15:22,970 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2120 conditions, 1044 events. 702/1044 cut-off events. For 1942/1942 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4408 event pairs. 298/1342 useless extension candidates. Maximal degree in co-relation 2090. Up to 252 conditions per place. [2020-02-10 23:15:22,982 INFO L145 encePairwiseOnDemand]: 169/179 looper letters, 2 selfloop transitions, 1 changer transitions 0/116 dead transitions. [2020-02-10 23:15:22,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:15:22,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:15:22,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2020-02-10 23:15:22,984 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9553072625698324 [2020-02-10 23:15:22,984 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2020-02-10 23:15:22,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2020-02-10 23:15:22,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:15:22,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2020-02-10 23:15:22,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:15:22,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:15:22,988 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:15:22,988 INFO L178 Difference]: Start difference. First operand has 76 places, 125 transitions. Second operand 3 states and 513 transitions. [2020-02-10 23:15:22,989 INFO L206 Difference]: Finished difference. Result has 78 places, 116 transitions [2020-02-10 23:15:22,989 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=76, 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=78, PETRI_TRANSITIONS=116} [2020-02-10 23:15:22,989 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 78 places, 116 transitions [2020-02-10 23:15:23,098 INFO L129 PetriNetUnfolder]: 702/1044 cut-off events. [2020-02-10 23:15:23,098 INFO L130 PetriNetUnfolder]: For 1026/1026 co-relation queries the response was YES. [2020-02-10 23:15:23,104 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2109 conditions, 1044 events. 702/1044 cut-off events. For 1026/1026 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 3978 event pairs. 0/1044 useless extension candidates. Maximal degree in co-relation 2079. Up to 252 conditions per place. [2020-02-10 23:15:23,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 116 transitions [2020-02-10 23:15:23,116 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 116 transitions [2020-02-10 23:15:23,116 INFO L479 AbstractCegarLoop]: Abstraction has has 78 places, 116 transitions [2020-02-10 23:15:23,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:15:23,235 INFO L129 PetriNetUnfolder]: 702/1043 cut-off events. [2020-02-10 23:15:23,236 INFO L130 PetriNetUnfolder]: For 1026/1026 co-relation queries the response was YES. [2020-02-10 23:15:23,236 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:15:23,236 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] [2020-02-10 23:15:23,236 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:15:23,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:15:23,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1419143189, now seen corresponding path program 1 times [2020-02-10 23:15:23,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:15:23,237 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537508787] [2020-02-10 23:15:23,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:15:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:15:23,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:15:23,275 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537508787] [2020-02-10 23:15:23,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:15:23,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:15:23,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645550358] [2020-02-10 23:15:23,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:15:23,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:15:23,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:15:23,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:15:23,278 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2020-02-10 23:15:23,278 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 116 transitions. Second operand 3 states. [2020-02-10 23:15:23,278 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:15:23,278 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2020-02-10 23:15:23,278 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:15:23,333 INFO L129 PetriNetUnfolder]: 186/337 cut-off events. [2020-02-10 23:15:23,333 INFO L130 PetriNetUnfolder]: For 636/636 co-relation queries the response was YES. [2020-02-10 23:15:23,335 INFO L76 FinitePrefix]: Finished finitePrefix Result has 708 conditions, 337 events. 186/337 cut-off events. For 636/636 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1242 event pairs. 98/435 useless extension candidates. Maximal degree in co-relation 677. Up to 63 conditions per place. [2020-02-10 23:15:23,340 INFO L145 encePairwiseOnDemand]: 170/179 looper letters, 3 selfloop transitions, 1 changer transitions 0/108 dead transitions. [2020-02-10 23:15:23,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:15:23,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:15:23,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2020-02-10 23:15:23,342 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9553072625698324 [2020-02-10 23:15:23,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2020-02-10 23:15:23,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2020-02-10 23:15:23,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:15:23,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2020-02-10 23:15:23,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:15:23,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:15:23,345 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:15:23,346 INFO L178 Difference]: Start difference. First operand has 78 places, 116 transitions. Second operand 3 states and 513 transitions. [2020-02-10 23:15:23,346 INFO L206 Difference]: Finished difference. Result has 80 places, 108 transitions [2020-02-10 23:15:23,347 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=516, PETRI_PLACES=80, PETRI_TRANSITIONS=108} [2020-02-10 23:15:23,347 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 80 places, 108 transitions [2020-02-10 23:15:23,373 INFO L129 PetriNetUnfolder]: 186/337 cut-off events. [2020-02-10 23:15:23,373 INFO L130 PetriNetUnfolder]: For 320/320 co-relation queries the response was YES. [2020-02-10 23:15:23,375 INFO L76 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 337 events. 186/337 cut-off events. For 320/320 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1122 event pairs. 0/337 useless extension candidates. Maximal degree in co-relation 666. Up to 63 conditions per place. [2020-02-10 23:15:23,375 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 108 transitions [2020-02-10 23:15:23,379 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 108 transitions [2020-02-10 23:15:23,379 INFO L479 AbstractCegarLoop]: Abstraction has has 80 places, 108 transitions [2020-02-10 23:15:23,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:15:23,402 INFO L129 PetriNetUnfolder]: 186/336 cut-off events. [2020-02-10 23:15:23,402 INFO L130 PetriNetUnfolder]: For 320/320 co-relation queries the response was YES. [2020-02-10 23:15:23,402 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:15:23,403 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] [2020-02-10 23:15:23,403 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:15:23,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:15:23,403 INFO L82 PathProgramCache]: Analyzing trace with hash -2133215389, now seen corresponding path program 1 times [2020-02-10 23:15:23,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:15:23,403 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214903063] [2020-02-10 23:15:23,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:15:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:15:23,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:15:23,432 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214903063] [2020-02-10 23:15:23,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:15:23,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:15:23,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828489439] [2020-02-10 23:15:23,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:15:23,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:15:23,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:15:23,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:15:23,435 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2020-02-10 23:15:23,435 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 108 transitions. Second operand 3 states. [2020-02-10 23:15:23,435 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:15:23,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2020-02-10 23:15:23,436 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:15:23,488 INFO L129 PetriNetUnfolder]: 182/332 cut-off events. [2020-02-10 23:15:23,489 INFO L130 PetriNetUnfolder]: For 391/391 co-relation queries the response was YES. [2020-02-10 23:15:23,492 INFO L76 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 332 events. 182/332 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1223 event pairs. 1/333 useless extension candidates. Maximal degree in co-relation 692. Up to 63 conditions per place. [2020-02-10 23:15:23,499 INFO L145 encePairwiseOnDemand]: 177/179 looper letters, 10 selfloop transitions, 1 changer transitions 0/107 dead transitions. [2020-02-10 23:15:23,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:15:23,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:15:23,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2020-02-10 23:15:23,501 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9553072625698324 [2020-02-10 23:15:23,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2020-02-10 23:15:23,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2020-02-10 23:15:23,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:15:23,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2020-02-10 23:15:23,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:15:23,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:15:23,505 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:15:23,505 INFO L178 Difference]: Start difference. First operand has 80 places, 108 transitions. Second operand 3 states and 513 transitions. [2020-02-10 23:15:23,505 INFO L206 Difference]: Finished difference. Result has 82 places, 107 transitions [2020-02-10 23:15:23,506 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=513, PETRI_PLACES=82, PETRI_TRANSITIONS=107} [2020-02-10 23:15:23,506 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 82 places, 107 transitions [2020-02-10 23:15:23,540 INFO L129 PetriNetUnfolder]: 182/332 cut-off events. [2020-02-10 23:15:23,540 INFO L130 PetriNetUnfolder]: For 316/316 co-relation queries the response was YES. [2020-02-10 23:15:23,543 INFO L76 FinitePrefix]: Finished finitePrefix Result has 689 conditions, 332 events. 182/332 cut-off events. For 316/316 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1112 event pairs. 0/332 useless extension candidates. Maximal degree in co-relation 663. Up to 63 conditions per place. [2020-02-10 23:15:23,543 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 107 transitions [2020-02-10 23:15:23,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 107 transitions [2020-02-10 23:15:23,549 INFO L479 AbstractCegarLoop]: Abstraction has has 82 places, 107 transitions [2020-02-10 23:15:23,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:15:23,584 INFO L129 PetriNetUnfolder]: 182/331 cut-off events. [2020-02-10 23:15:23,584 INFO L130 PetriNetUnfolder]: For 316/316 co-relation queries the response was YES. [2020-02-10 23:15:23,584 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:15:23,584 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] [2020-02-10 23:15:23,584 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:15:23,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:15:23,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1457597455, now seen corresponding path program 1 times [2020-02-10 23:15:23,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:15:23,585 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223422734] [2020-02-10 23:15:23,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:15:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:15:23,615 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 23:15:23,615 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223422734] [2020-02-10 23:15:23,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:15:23,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:15:23,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026133520] [2020-02-10 23:15:23,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:15:23,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:15:23,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:15:23,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:15:23,618 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2020-02-10 23:15:23,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 107 transitions. Second operand 3 states. [2020-02-10 23:15:23,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:15:23,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2020-02-10 23:15:23,619 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:15:23,645 INFO L129 PetriNetUnfolder]: 29/88 cut-off events. [2020-02-10 23:15:23,646 INFO L130 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2020-02-10 23:15:23,647 INFO L76 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 88 events. 29/88 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 181 event pairs. 35/123 useless extension candidates. Maximal degree in co-relation 177. Up to 12 conditions per place. [2020-02-10 23:15:23,648 INFO L145 encePairwiseOnDemand]: 168/179 looper letters, 1 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2020-02-10 23:15:23,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:15:23,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:15:23,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2020-02-10 23:15:23,650 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9553072625698324 [2020-02-10 23:15:23,650 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2020-02-10 23:15:23,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2020-02-10 23:15:23,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:15:23,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2020-02-10 23:15:23,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:15:23,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:15:23,652 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:15:23,653 INFO L178 Difference]: Start difference. First operand has 82 places, 107 transitions. Second operand 3 states and 513 transitions. [2020-02-10 23:15:23,653 INFO L206 Difference]: Finished difference. Result has 84 places, 63 transitions [2020-02-10 23:15:23,653 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=84, PETRI_TRANSITIONS=63} [2020-02-10 23:15:23,653 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 84 places, 63 transitions [2020-02-10 23:15:23,662 INFO L129 PetriNetUnfolder]: 29/88 cut-off events. [2020-02-10 23:15:23,663 INFO L130 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2020-02-10 23:15:23,664 INFO L76 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 88 events. 29/88 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 190 event pairs. 0/88 useless extension candidates. Maximal degree in co-relation 176. Up to 12 conditions per place. [2020-02-10 23:15:23,664 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 63 transitions [2020-02-10 23:15:23,666 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 63 transitions [2020-02-10 23:15:23,666 INFO L479 AbstractCegarLoop]: Abstraction has has 84 places, 63 transitions [2020-02-10 23:15:23,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:15:23,673 INFO L129 PetriNetUnfolder]: 29/87 cut-off events. [2020-02-10 23:15:23,673 INFO L130 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2020-02-10 23:15:23,674 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:15:23,674 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] [2020-02-10 23:15:23,674 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:15:23,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:15:23,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1471872347, now seen corresponding path program 1 times [2020-02-10 23:15:23,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:15:23,675 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703732193] [2020-02-10 23:15:23,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:15:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:15:23,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:15:23,699 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703732193] [2020-02-10 23:15:23,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:15:23,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:15:23,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646227604] [2020-02-10 23:15:23,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:15:23,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:15:23,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:15:23,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:15:23,702 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2020-02-10 23:15:23,702 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 63 transitions. Second operand 3 states. [2020-02-10 23:15:23,702 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:15:23,702 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2020-02-10 23:15:23,702 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:15:23,714 INFO L129 PetriNetUnfolder]: 3/40 cut-off events. [2020-02-10 23:15:23,715 INFO L130 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2020-02-10 23:15:23,715 INFO L76 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 40 events. 3/40 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs. 9/49 useless extension candidates. Maximal degree in co-relation 82. Up to 4 conditions per place. [2020-02-10 23:15:23,716 INFO L145 encePairwiseOnDemand]: 172/179 looper letters, 1 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2020-02-10 23:15:23,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:15:23,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:15:23,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2020-02-10 23:15:23,718 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9478584729981379 [2020-02-10 23:15:23,718 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 509 transitions. [2020-02-10 23:15:23,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 509 transitions. [2020-02-10 23:15:23,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:15:23,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 509 transitions. [2020-02-10 23:15:23,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:15:23,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:15:23,720 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:15:23,720 INFO L178 Difference]: Start difference. First operand has 84 places, 63 transitions. Second operand 3 states and 509 transitions. [2020-02-10 23:15:23,721 INFO L206 Difference]: Finished difference. Result has 86 places, 39 transitions [2020-02-10 23:15:23,721 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=86, PETRI_TRANSITIONS=39} [2020-02-10 23:15:23,721 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 86 places, 39 transitions [2020-02-10 23:15:23,725 INFO L129 PetriNetUnfolder]: 3/40 cut-off events. [2020-02-10 23:15:23,725 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2020-02-10 23:15:23,726 INFO L76 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 40 events. 3/40 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs. 0/40 useless extension candidates. Maximal degree in co-relation 81. Up to 4 conditions per place. [2020-02-10 23:15:23,726 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 39 transitions [2020-02-10 23:15:23,727 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 39 transitions [2020-02-10 23:15:23,727 INFO L479 AbstractCegarLoop]: Abstraction has has 86 places, 39 transitions [2020-02-10 23:15:23,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:15:23,731 INFO L129 PetriNetUnfolder]: 3/39 cut-off events. [2020-02-10 23:15:23,731 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2020-02-10 23:15:23,731 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:15:23,731 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] [2020-02-10 23:15:23,731 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:15:23,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:15:23,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1697924845, now seen corresponding path program 1 times [2020-02-10 23:15:23,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:15:23,732 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932751783] [2020-02-10 23:15:23,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:15:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:15:23,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:15:23,767 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932751783] [2020-02-10 23:15:23,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:15:23,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:15:23,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803837357] [2020-02-10 23:15:23,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:15:23,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:15:23,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:15:23,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:15:23,769 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 179 [2020-02-10 23:15:23,769 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 39 transitions. Second operand 3 states. [2020-02-10 23:15:23,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:15:23,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 179 [2020-02-10 23:15:23,770 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:15:23,777 INFO L129 PetriNetUnfolder]: 0/34 cut-off events. [2020-02-10 23:15:23,777 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2020-02-10 23:15:23,777 INFO L76 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 34 events. 0/34 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs. 2/36 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2020-02-10 23:15:23,778 INFO L145 encePairwiseOnDemand]: 176/179 looper letters, 1 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2020-02-10 23:15:23,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:15:23,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:15:23,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 505 transitions. [2020-02-10 23:15:23,780 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9404096834264432 [2020-02-10 23:15:23,780 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 505 transitions. [2020-02-10 23:15:23,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 505 transitions. [2020-02-10 23:15:23,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:15:23,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 505 transitions. [2020-02-10 23:15:23,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:15:23,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:15:23,782 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:15:23,782 INFO L178 Difference]: Start difference. First operand has 86 places, 39 transitions. Second operand 3 states and 505 transitions. [2020-02-10 23:15:23,783 INFO L206 Difference]: Finished difference. Result has 88 places, 34 transitions [2020-02-10 23:15:23,783 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=86, 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=154, PETRI_PLACES=88, PETRI_TRANSITIONS=34} [2020-02-10 23:15:23,783 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 88 places, 34 transitions [2020-02-10 23:15:23,787 INFO L129 PetriNetUnfolder]: 0/34 cut-off events. [2020-02-10 23:15:23,787 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2020-02-10 23:15:23,788 INFO L76 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 34 events. 0/34 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs. 0/34 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2020-02-10 23:15:23,788 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 34 transitions [2020-02-10 23:15:23,789 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 34 transitions [2020-02-10 23:15:23,789 INFO L479 AbstractCegarLoop]: Abstraction has has 88 places, 34 transitions [2020-02-10 23:15:23,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:15:23,794 INFO L129 PetriNetUnfolder]: 0/33 cut-off events. [2020-02-10 23:15:23,794 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2020-02-10 23:15:23,795 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:15:23,795 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] [2020-02-10 23:15:23,795 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:15:23,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:15:23,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1570696329, now seen corresponding path program 1 times [2020-02-10 23:15:23,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:15:23,796 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483969832] [2020-02-10 23:15:23,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:15:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:15:24,496 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-02-10 23:15:24,671 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-02-10 23:15:24,897 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-02-10 23:15:25,069 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 40 [2020-02-10 23:15:25,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:15:25,085 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483969832] [2020-02-10 23:15:25,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:15:25,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-02-10 23:15:25,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497597286] [2020-02-10 23:15:25,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-02-10 23:15:25,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:15:25,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-02-10 23:15:25,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-02-10 23:15:25,088 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2020-02-10 23:15:25,090 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 34 transitions. Second operand 13 states. [2020-02-10 23:15:25,090 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:15:25,090 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2020-02-10 23:15:25,090 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:15:37,550 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-02-10 23:15:38,407 INFO L129 PetriNetUnfolder]: 12291/15641 cut-off events. [2020-02-10 23:15:38,407 INFO L130 PetriNetUnfolder]: For 269/269 co-relation queries the response was YES. [2020-02-10 23:15:38,533 INFO L76 FinitePrefix]: Finished finitePrefix Result has 31326 conditions, 15641 events. 12291/15641 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 965. Compared 73275 event pairs. 1/15275 useless extension candidates. Maximal degree in co-relation 31296. Up to 5633 conditions per place. [2020-02-10 23:15:38,787 INFO L145 encePairwiseOnDemand]: 167/179 looper letters, 65 selfloop transitions, 10 changer transitions 1/98 dead transitions. [2020-02-10 23:15:38,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-02-10 23:15:38,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-02-10 23:15:38,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2020-02-10 23:15:38,793 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8990116029222175 [2020-02-10 23:15:38,793 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2020-02-10 23:15:38,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2020-02-10 23:15:38,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:15:38,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2020-02-10 23:15:38,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-02-10 23:15:38,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-02-10 23:15:38,803 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-02-10 23:15:38,803 INFO L178 Difference]: Start difference. First operand has 88 places, 34 transitions. Second operand 13 states and 2092 transitions. [2020-02-10 23:15:38,804 INFO L206 Difference]: Finished difference. Result has 111 places, 43 transitions [2020-02-10 23:15:38,804 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=233, PETRI_PLACES=111, PETRI_TRANSITIONS=43} [2020-02-10 23:15:38,805 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 111 places, 43 transitions [2020-02-10 23:15:38,822 INFO L129 PetriNetUnfolder]: 0/130 cut-off events. [2020-02-10 23:15:38,822 INFO L130 PetriNetUnfolder]: For 109/109 co-relation queries the response was YES. [2020-02-10 23:15:38,824 INFO L76 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 130 events. 0/130 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 579 event pairs. 0/115 useless extension candidates. Maximal degree in co-relation 292. Up to 11 conditions per place. [2020-02-10 23:15:38,824 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 43 transitions [2020-02-10 23:15:38,826 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 43 transitions [2020-02-10 23:15:38,827 INFO L479 AbstractCegarLoop]: Abstraction has has 110 places, 43 transitions [2020-02-10 23:15:38,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-02-10 23:15:38,843 INFO L129 PetriNetUnfolder]: 0/120 cut-off events. [2020-02-10 23:15:38,843 INFO L130 PetriNetUnfolder]: For 109/109 co-relation queries the response was YES. [2020-02-10 23:15:38,843 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:15:38,844 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] [2020-02-10 23:15:38,844 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:15:38,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:15:38,844 INFO L82 PathProgramCache]: Analyzing trace with hash -135164081, now seen corresponding path program 2 times [2020-02-10 23:15:38,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:15:38,845 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803633937] [2020-02-10 23:15:38,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:15:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:15:39,280 WARN L192 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 17 [2020-02-10 23:15:39,694 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-02-10 23:15:39,869 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 39 [2020-02-10 23:15:40,042 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-02-10 23:15:40,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:15:40,053 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803633937] [2020-02-10 23:15:40,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:15:40,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-02-10 23:15:40,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567965886] [2020-02-10 23:15:40,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-02-10 23:15:40,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:15:40,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-02-10 23:15:40,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-02-10 23:15:40,056 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2020-02-10 23:15:40,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 43 transitions. Second operand 13 states. [2020-02-10 23:15:40,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:15:40,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2020-02-10 23:15:40,058 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:16:15,145 INFO L129 PetriNetUnfolder]: 16075/21310 cut-off events. [2020-02-10 23:16:15,145 INFO L130 PetriNetUnfolder]: For 24108/24252 co-relation queries the response was YES. [2020-02-10 23:16:15,325 INFO L76 FinitePrefix]: Finished finitePrefix Result has 64460 conditions, 21310 events. 16075/21310 cut-off events. For 24108/24252 co-relation queries the response was YES. Maximal size of possible extension queue 1272. Compared 113025 event pairs. 1/20925 useless extension candidates. Maximal degree in co-relation 64418. Up to 7682 conditions per place. [2020-02-10 23:16:15,659 INFO L145 encePairwiseOnDemand]: 167/179 looper letters, 75 selfloop transitions, 18 changer transitions 1/116 dead transitions. [2020-02-10 23:16:15,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-02-10 23:16:15,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-02-10 23:16:15,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2020-02-10 23:16:15,664 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8990116029222175 [2020-02-10 23:16:15,664 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2020-02-10 23:16:15,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2020-02-10 23:16:15,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:16:15,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2020-02-10 23:16:15,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-02-10 23:16:15,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-02-10 23:16:15,673 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-02-10 23:16:15,673 INFO L178 Difference]: Start difference. First operand has 110 places, 43 transitions. Second operand 13 states and 2092 transitions. [2020-02-10 23:16:15,674 INFO L206 Difference]: Finished difference. Result has 133 places, 57 transitions [2020-02-10 23:16:15,675 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=401, PETRI_PLACES=133, PETRI_TRANSITIONS=57} [2020-02-10 23:16:15,675 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 133 places, 57 transitions [2020-02-10 23:16:15,751 INFO L129 PetriNetUnfolder]: 0/386 cut-off events. [2020-02-10 23:16:15,751 INFO L130 PetriNetUnfolder]: For 531/541 co-relation queries the response was YES. [2020-02-10 23:16:15,756 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 386 events. 0/386 cut-off events. For 531/541 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3082 event pairs. 0/339 useless extension candidates. Maximal degree in co-relation 974. Up to 34 conditions per place. [2020-02-10 23:16:15,756 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 57 transitions [2020-02-10 23:16:15,763 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 57 transitions [2020-02-10 23:16:15,763 INFO L479 AbstractCegarLoop]: Abstraction has has 132 places, 57 transitions [2020-02-10 23:16:15,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-02-10 23:16:15,805 INFO L129 PetriNetUnfolder]: 0/354 cut-off events. [2020-02-10 23:16:15,805 INFO L130 PetriNetUnfolder]: For 531/541 co-relation queries the response was YES. [2020-02-10 23:16:15,806 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:16:15,806 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] [2020-02-10 23:16:15,806 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:16:15,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:16:15,806 INFO L82 PathProgramCache]: Analyzing trace with hash -674818657, now seen corresponding path program 3 times [2020-02-10 23:16:15,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:16:15,806 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239471882] [2020-02-10 23:16:15,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:16:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:16:16,430 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 34 [2020-02-10 23:16:16,599 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 38 [2020-02-10 23:16:16,773 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 40 [2020-02-10 23:16:16,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:16:16,783 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239471882] [2020-02-10 23:16:16,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:16:16,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-02-10 23:16:16,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113229984] [2020-02-10 23:16:16,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-02-10 23:16:16,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:16:16,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-02-10 23:16:16,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-02-10 23:16:16,786 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2020-02-10 23:16:16,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 57 transitions. Second operand 13 states. [2020-02-10 23:16:16,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:16:16,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2020-02-10 23:16:16,787 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:17:21,714 INFO L129 PetriNetUnfolder]: 18351/25811 cut-off events. [2020-02-10 23:17:21,714 INFO L130 PetriNetUnfolder]: For 83123/83212 co-relation queries the response was YES. [2020-02-10 23:17:21,987 INFO L76 FinitePrefix]: Finished finitePrefix Result has 102984 conditions, 25811 events. 18351/25811 cut-off events. For 83123/83212 co-relation queries the response was YES. Maximal size of possible extension queue 1387. Compared 155248 event pairs. 1/25416 useless extension candidates. Maximal degree in co-relation 102930. Up to 10328 conditions per place. [2020-02-10 23:17:22,467 INFO L145 encePairwiseOnDemand]: 167/179 looper letters, 103 selfloop transitions, 16 changer transitions 1/142 dead transitions. [2020-02-10 23:17:22,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-02-10 23:17:22,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-02-10 23:17:22,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2020-02-10 23:17:22,472 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8990116029222175 [2020-02-10 23:17:22,472 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2020-02-10 23:17:22,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2020-02-10 23:17:22,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:17:22,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2020-02-10 23:17:22,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-02-10 23:17:22,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-02-10 23:17:22,481 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-02-10 23:17:22,481 INFO L178 Difference]: Start difference. First operand has 132 places, 57 transitions. Second operand 13 states and 2092 transitions. [2020-02-10 23:17:22,482 INFO L206 Difference]: Finished difference. Result has 155 places, 71 transitions [2020-02-10 23:17:22,482 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=594, PETRI_PLACES=155, PETRI_TRANSITIONS=71} [2020-02-10 23:17:22,483 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 155 places, 71 transitions [2020-02-10 23:17:22,656 INFO L129 PetriNetUnfolder]: 0/761 cut-off events. [2020-02-10 23:17:22,657 INFO L130 PetriNetUnfolder]: For 1443/1464 co-relation queries the response was YES. [2020-02-10 23:17:22,664 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2114 conditions, 761 events. 0/761 cut-off events. For 1443/1464 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 7789 event pairs. 0/673 useless extension candidates. Maximal degree in co-relation 2049. Up to 66 conditions per place. [2020-02-10 23:17:22,664 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 71 transitions [2020-02-10 23:17:22,677 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 71 transitions [2020-02-10 23:17:22,677 INFO L479 AbstractCegarLoop]: Abstraction has has 154 places, 71 transitions [2020-02-10 23:17:22,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-02-10 23:17:22,792 INFO L129 PetriNetUnfolder]: 0/697 cut-off events. [2020-02-10 23:17:22,792 INFO L130 PetriNetUnfolder]: For 1443/1464 co-relation queries the response was YES. [2020-02-10 23:17:22,792 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:17:22,792 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] [2020-02-10 23:17:22,792 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:17:22,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:17:22,793 INFO L82 PathProgramCache]: Analyzing trace with hash -937261809, now seen corresponding path program 4 times [2020-02-10 23:17:22,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:17:22,793 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123607630] [2020-02-10 23:17:22,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:17:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:17:23,532 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-02-10 23:17:23,716 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 37 [2020-02-10 23:17:23,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:17:23,727 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123607630] [2020-02-10 23:17:23,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:17:23,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-02-10 23:17:23,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208547401] [2020-02-10 23:17:23,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-02-10 23:17:23,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:17:23,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-02-10 23:17:23,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-02-10 23:17:23,729 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2020-02-10 23:17:23,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 71 transitions. Second operand 13 states. [2020-02-10 23:17:23,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:17:23,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2020-02-10 23:17:23,730 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:19:40,660 INFO L129 PetriNetUnfolder]: 23201/32758 cut-off events. [2020-02-10 23:19:40,660 INFO L130 PetriNetUnfolder]: For 202731/202820 co-relation queries the response was YES. [2020-02-10 23:19:41,086 INFO L76 FinitePrefix]: Finished finitePrefix Result has 160662 conditions, 32758 events. 23201/32758 cut-off events. For 202731/202820 co-relation queries the response was YES. Maximal size of possible extension queue 1889. Compared 208043 event pairs. 1/32313 useless extension candidates. Maximal degree in co-relation 160596. Up to 15214 conditions per place. [2020-02-10 23:19:41,825 INFO L145 encePairwiseOnDemand]: 167/179 looper letters, 106 selfloop transitions, 16 changer transitions 1/145 dead transitions. [2020-02-10 23:19:41,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-02-10 23:19:41,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-02-10 23:19:41,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2020-02-10 23:19:41,830 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8990116029222175 [2020-02-10 23:19:41,831 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2020-02-10 23:19:41,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2020-02-10 23:19:41,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:19:41,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2020-02-10 23:19:41,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-02-10 23:19:41,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-02-10 23:19:41,839 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-02-10 23:19:41,839 INFO L178 Difference]: Start difference. First operand has 154 places, 71 transitions. Second operand 13 states and 2092 transitions. [2020-02-10 23:19:41,840 INFO L206 Difference]: Finished difference. Result has 177 places, 81 transitions [2020-02-10 23:19:41,840 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=769, PETRI_PLACES=177, PETRI_TRANSITIONS=81} [2020-02-10 23:19:41,841 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 177 places, 81 transitions [2020-02-10 23:19:42,048 INFO L129 PetriNetUnfolder]: 0/925 cut-off events. [2020-02-10 23:19:42,049 INFO L130 PetriNetUnfolder]: For 2458/2482 co-relation queries the response was YES. [2020-02-10 23:19:42,059 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2760 conditions, 925 events. 0/925 cut-off events. For 2458/2482 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 10064 event pairs. 0/812 useless extension candidates. Maximal degree in co-relation 2683. Up to 83 conditions per place. [2020-02-10 23:19:42,059 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 81 transitions [2020-02-10 23:19:42,078 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 81 transitions [2020-02-10 23:19:42,078 INFO L479 AbstractCegarLoop]: Abstraction has has 176 places, 81 transitions [2020-02-10 23:19:42,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-02-10 23:19:42,238 INFO L129 PetriNetUnfolder]: 0/844 cut-off events. [2020-02-10 23:19:42,238 INFO L130 PetriNetUnfolder]: For 2458/2482 co-relation queries the response was YES. [2020-02-10 23:19:42,238 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:19:42,238 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] [2020-02-10 23:19:42,238 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:19:42,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:19:42,239 INFO L82 PathProgramCache]: Analyzing trace with hash 2143797817, now seen corresponding path program 5 times [2020-02-10 23:19:42,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:19:42,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579366559] [2020-02-10 23:19:42,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:19:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:19:42,846 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2020-02-10 23:19:42,991 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-02-10 23:19:43,146 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 40 [2020-02-10 23:19:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:19:43,157 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579366559] [2020-02-10 23:19:43,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:19:43,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-02-10 23:19:43,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761591981] [2020-02-10 23:19:43,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-02-10 23:19:43,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:19:43,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-02-10 23:19:43,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-02-10 23:19:43,160 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2020-02-10 23:19:43,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 81 transitions. Second operand 13 states. [2020-02-10 23:19:43,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:19:43,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2020-02-10 23:19:43,162 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:22:26,959 INFO L129 PetriNetUnfolder]: 23201/32510 cut-off events. [2020-02-10 23:22:26,960 INFO L130 PetriNetUnfolder]: For 321474/323165 co-relation queries the response was YES. [2020-02-10 23:22:27,521 INFO L76 FinitePrefix]: Finished finitePrefix Result has 187736 conditions, 32510 events. 23201/32510 cut-off events. For 321474/323165 co-relation queries the response was YES. Maximal size of possible extension queue 1888. Compared 200480 event pairs. 1/32087 useless extension candidates. Maximal degree in co-relation 187658. Up to 14628 conditions per place. [2020-02-10 23:22:28,325 INFO L145 encePairwiseOnDemand]: 167/179 looper letters, 112 selfloop transitions, 14 changer transitions 1/149 dead transitions. [2020-02-10 23:22:28,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-02-10 23:22:28,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-02-10 23:22:28,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2020-02-10 23:22:28,329 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8990116029222175 [2020-02-10 23:22:28,329 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2020-02-10 23:22:28,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2020-02-10 23:22:28,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:22:28,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2020-02-10 23:22:28,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-02-10 23:22:28,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-02-10 23:22:28,336 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-02-10 23:22:28,336 INFO L178 Difference]: Start difference. First operand has 176 places, 81 transitions. Second operand 13 states and 2092 transitions. [2020-02-10 23:22:28,337 INFO L206 Difference]: Finished difference. Result has 192 places, 83 transitions [2020-02-10 23:22:28,337 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=831, PETRI_PLACES=192, PETRI_TRANSITIONS=83} [2020-02-10 23:22:28,337 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 192 places, 83 transitions [2020-02-10 23:22:28,545 INFO L129 PetriNetUnfolder]: 0/919 cut-off events. [2020-02-10 23:22:28,545 INFO L130 PetriNetUnfolder]: For 2928/2952 co-relation queries the response was YES. [2020-02-10 23:22:28,556 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2889 conditions, 919 events. 0/919 cut-off events. For 2928/2952 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 10009 event pairs. 0/807 useless extension candidates. Maximal degree in co-relation 2807. Up to 82 conditions per place. [2020-02-10 23:22:28,556 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 83 transitions [2020-02-10 23:22:28,575 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 83 transitions [2020-02-10 23:22:28,575 INFO L479 AbstractCegarLoop]: Abstraction has has 191 places, 83 transitions [2020-02-10 23:22:28,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-02-10 23:22:28,740 INFO L129 PetriNetUnfolder]: 0/839 cut-off events. [2020-02-10 23:22:28,741 INFO L130 PetriNetUnfolder]: For 2928/2952 co-relation queries the response was YES. [2020-02-10 23:22:28,741 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:22:28,741 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] [2020-02-10 23:22:28,741 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:22:28,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:22:28,741 INFO L82 PathProgramCache]: Analyzing trace with hash 924595591, now seen corresponding path program 6 times [2020-02-10 23:22:28,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:22:28,742 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653847900] [2020-02-10 23:22:28,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:22:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:22:29,520 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-02-10 23:22:29,680 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-02-10 23:22:29,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:22:29,690 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653847900] [2020-02-10 23:22:29,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:22:29,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-02-10 23:22:29,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205091056] [2020-02-10 23:22:29,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-02-10 23:22:29,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:22:29,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-02-10 23:22:29,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-02-10 23:22:29,693 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2020-02-10 23:22:29,694 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 83 transitions. Second operand 13 states. [2020-02-10 23:22:29,694 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:22:29,695 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2020-02-10 23:22:29,695 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:25:16,986 INFO L129 PetriNetUnfolder]: 23198/32582 cut-off events. [2020-02-10 23:25:16,986 INFO L130 PetriNetUnfolder]: For 339804/341495 co-relation queries the response was YES. [2020-02-10 23:25:17,544 INFO L76 FinitePrefix]: Finished finitePrefix Result has 192208 conditions, 32582 events. 23198/32582 cut-off events. For 339804/341495 co-relation queries the response was YES. Maximal size of possible extension queue 1888. Compared 201685 event pairs. 1/32157 useless extension candidates. Maximal degree in co-relation 192125. Up to 14628 conditions per place. [2020-02-10 23:25:18,408 INFO L145 encePairwiseOnDemand]: 167/179 looper letters, 103 selfloop transitions, 20 changer transitions 1/146 dead transitions. [2020-02-10 23:25:18,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-02-10 23:25:18,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-02-10 23:25:18,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2020-02-10 23:25:18,413 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8990116029222175 [2020-02-10 23:25:18,413 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2020-02-10 23:25:18,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2020-02-10 23:25:18,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:25:18,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2020-02-10 23:25:18,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-02-10 23:25:18,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-02-10 23:25:18,421 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-02-10 23:25:18,421 INFO L178 Difference]: Start difference. First operand has 191 places, 83 transitions. Second operand 13 states and 2092 transitions. [2020-02-10 23:25:18,421 INFO L206 Difference]: Finished difference. Result has 207 places, 85 transitions [2020-02-10 23:25:18,422 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=912, PETRI_PLACES=207, PETRI_TRANSITIONS=85} [2020-02-10 23:25:18,422 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 207 places, 85 transitions [2020-02-10 23:25:18,666 INFO L129 PetriNetUnfolder]: 0/962 cut-off events. [2020-02-10 23:25:18,666 INFO L130 PetriNetUnfolder]: For 3633/3659 co-relation queries the response was YES. [2020-02-10 23:25:18,678 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3175 conditions, 962 events. 0/962 cut-off events. For 3633/3659 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 10586 event pairs. 0/846 useless extension candidates. Maximal degree in co-relation 3088. Up to 85 conditions per place. [2020-02-10 23:25:18,678 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 85 transitions [2020-02-10 23:25:18,699 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 85 transitions [2020-02-10 23:25:18,699 INFO L479 AbstractCegarLoop]: Abstraction has has 206 places, 85 transitions [2020-02-10 23:25:18,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-02-10 23:25:18,885 INFO L129 PetriNetUnfolder]: 0/879 cut-off events. [2020-02-10 23:25:18,885 INFO L130 PetriNetUnfolder]: For 3633/3659 co-relation queries the response was YES. [2020-02-10 23:25:18,885 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:25:18,885 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] [2020-02-10 23:25:18,885 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:25:18,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:25:18,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1987845753, now seen corresponding path program 7 times [2020-02-10 23:25:18,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:25:18,886 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841995421] [2020-02-10 23:25:18,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:25:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:25:19,668 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-02-10 23:25:19,838 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 39 [2020-02-10 23:25:19,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:25:19,850 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841995421] [2020-02-10 23:25:19,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:25:19,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-02-10 23:25:19,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651040736] [2020-02-10 23:25:19,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-02-10 23:25:19,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:25:19,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-02-10 23:25:19,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-02-10 23:25:19,854 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 179 [2020-02-10 23:25:19,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 85 transitions. Second operand 13 states. [2020-02-10 23:25:19,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:25:19,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 179 [2020-02-10 23:25:19,855 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2020-02-10 23:28:15,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-02-10 23:28:15,673 WARN L544 AbstractCegarLoop]: Verification canceled [2020-02-10 23:28:15,676 WARN L227 ceAbstractionStarter]: Timeout [2020-02-10 23:28:15,677 INFO L202 PluginConnector]: Adding new model example_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 11:28:15 BasicIcfg [2020-02-10 23:28:15,677 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-02-10 23:28:15,678 INFO L168 Benchmark]: Toolchain (without parser) took 840241.37 ms. Allocated memory was 141.0 MB in the beginning and 3.3 GB in the end (delta: 3.1 GB). Free memory was 121.7 MB in the beginning and 461.0 MB in the end (delta: -339.3 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2020-02-10 23:28:15,679 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-02-10 23:28:15,679 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.21 ms. Allocated memory is still 141.0 MB. Free memory was 121.5 MB in the beginning and 119.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-02-10 23:28:15,680 INFO L168 Benchmark]: Boogie Preprocessor took 38.54 ms. Allocated memory is still 141.0 MB. Free memory was 119.6 MB in the beginning and 118.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-02-10 23:28:15,680 INFO L168 Benchmark]: RCFGBuilder took 444.24 ms. Allocated memory is still 141.0 MB. Free memory was 118.5 MB in the beginning and 103.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-02-10 23:28:15,681 INFO L168 Benchmark]: TraceAbstraction took 839716.72 ms. Allocated memory was 141.0 MB in the beginning and 3.3 GB in the end (delta: 3.1 GB). Free memory was 102.8 MB in the beginning and 461.0 MB in the end (delta: -358.2 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2020-02-10 23:28:15,684 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 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.9 MB in the beginning and 122.7 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 36.21 ms. Allocated memory is still 141.0 MB. Free memory was 121.5 MB in the beginning and 119.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.54 ms. Allocated memory is still 141.0 MB. Free memory was 119.6 MB in the beginning and 118.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 444.24 ms. Allocated memory is still 141.0 MB. Free memory was 118.5 MB in the beginning and 103.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 839716.72 ms. Allocated memory was 141.0 MB in the beginning and 3.3 GB in the end (delta: 3.1 GB). Free memory was 102.8 MB in the beginning and 461.0 MB in the end (delta: -358.2 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 20.6s, 79 ProgramPointsBefore, 68 ProgramPointsAfterwards, 155 TransitionsBefore, 144 TransitionsAfterwards, 5060 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1320 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1375 CheckedPairsTotal, 11 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 35]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 35). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (13states, 155/179 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 201306 conditions, 31178 events (23801/31177 cut-off events. For 401233/402924 co-relation queries the response was YES. Maximal size of possible extension queue 1986. Compared 178307 event pairs. 0/31582 useless extension candidates. Maximal degree in co-relation 201225. Up to 13784 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. Result: TIMEOUT, OverallTime: 839.3s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 772.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 32.0s, HoareTripleCheckerStatistics: 469 SDtfs, 486 SDslu, 480 SDs, 0 SdLazy, 848 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred 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: 8.5s AutomataMinimizationTime, 16 MinimizatonAttempts, 6 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 578 NumberOfCodeBlocks, 578 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 561 ConstructedInterpolants, 0 QuantifiedInterpolants, 293205 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 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