/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_7.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d9e330d [2020-02-10 23:28:40,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-02-10 23:28:40,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-02-10 23:28:40,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-02-10 23:28:40,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-02-10 23:28:40,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-02-10 23:28:40,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-02-10 23:28:40,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-02-10 23:28:40,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-02-10 23:28:40,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-02-10 23:28:40,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-02-10 23:28:40,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-02-10 23:28:40,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-02-10 23:28:40,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-02-10 23:28:40,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-02-10 23:28:40,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-02-10 23:28:40,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-02-10 23:28:40,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-02-10 23:28:40,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-02-10 23:28:40,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-02-10 23:28:40,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-02-10 23:28:40,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-02-10 23:28:40,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-02-10 23:28:40,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-02-10 23:28:40,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-02-10 23:28:40,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-02-10 23:28:40,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-02-10 23:28:40,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-02-10 23:28:40,560 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 23:28:40,585 INFO L113 SettingsManager]: Loading preferences was successful [2020-02-10 23:28:40,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-02-10 23:28:40,587 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-02-10 23:28:40,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-02-10 23:28:40,588 INFO L138 SettingsManager]: * Use SBE=true [2020-02-10 23:28:40,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-02-10 23:28:40,588 INFO L138 SettingsManager]: * sizeof long=4 [2020-02-10 23:28:40,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-02-10 23:28:40,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-02-10 23:28:40,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-02-10 23:28:40,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-02-10 23:28:40,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-02-10 23:28:40,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-02-10 23:28:40,591 INFO L138 SettingsManager]: * sizeof long double=12 [2020-02-10 23:28:40,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-02-10 23:28:40,592 INFO L138 SettingsManager]: * Use constant arrays=true [2020-02-10 23:28:40,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-02-10 23:28:40,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-02-10 23:28:40,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-02-10 23:28:40,592 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-02-10 23:28:40,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-02-10 23:28:40,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-10 23:28:40,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-02-10 23:28:40,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-02-10 23:28:40,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-02-10 23:28:40,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-02-10 23:28:40,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-02-10 23:28:40,594 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-02-10 23:28:40,594 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-02-10 23:28:40,595 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-02-10 23:28:40,947 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-02-10 23:28:40,972 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-02-10 23:28:40,976 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-02-10 23:28:40,977 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-02-10 23:28:40,978 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-02-10 23:28:40,979 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl [2020-02-10 23:28:40,979 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl' [2020-02-10 23:28:41,019 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-02-10 23:28:41,022 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-02-10 23:28:41,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-02-10 23:28:41,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-02-10 23:28:41,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-02-10 23:28:41,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:41" (1/1) ... [2020-02-10 23:28:41,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:41" (1/1) ... [2020-02-10 23:28:41,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-02-10 23:28:41,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-02-10 23:28:41,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-02-10 23:28:41,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-02-10 23:28:41,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:41" (1/1) ... [2020-02-10 23:28:41,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:41" (1/1) ... [2020-02-10 23:28:41,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:41" (1/1) ... [2020-02-10 23:28:41,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:41" (1/1) ... [2020-02-10 23:28:41,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:41" (1/1) ... [2020-02-10 23:28:41,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:41" (1/1) ... [2020-02-10 23:28:41,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:41" (1/1) ... [2020-02-10 23:28:41,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-02-10 23:28:41,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-02-10 23:28:41,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-02-10 23:28:41,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-02-10 23:28:41,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:41" (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 23:28:41,174 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-02-10 23:28:41,174 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-02-10 23:28:41,176 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-02-10 23:28:41,177 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-02-10 23:28:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-02-10 23:28:41,177 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-02-10 23:28:41,177 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-02-10 23:28:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-02-10 23:28:41,178 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-02-10 23:28:41,178 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-02-10 23:28:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-02-10 23:28:41,178 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-02-10 23:28:41,179 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-02-10 23:28:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-02-10 23:28:41,179 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-02-10 23:28:41,179 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-02-10 23:28:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-02-10 23:28:41,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-02-10 23:28:41,180 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-02-10 23:28:41,180 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-02-10 23:28:41,180 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-02-10 23:28:41,181 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2020-02-10 23:28:41,181 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2020-02-10 23:28:41,182 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2020-02-10 23:28:41,183 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 23:28:41,482 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-02-10 23:28:41,482 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-02-10 23:28:41,486 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:28:41 BoogieIcfgContainer [2020-02-10 23:28:41,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-02-10 23:28:41,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-02-10 23:28:41,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-02-10 23:28:41,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-02-10 23:28:41,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:41" (1/2) ... [2020-02-10 23:28:41,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c4f37e7 and model type example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:28:41, skipping insertion in model container [2020-02-10 23:28:41,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:28:41" (2/2) ... [2020-02-10 23:28:41,494 INFO L109 eAbstractionObserver]: Analyzing ICFG example_7.bpl [2020-02-10 23:28:41,504 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-02-10 23:28:41,511 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-02-10 23:28:41,512 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-02-10 23:28:41,662 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-02-10 23:28:41,683 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-02-10 23:28:41,683 INFO L376 AbstractCegarLoop]: Hoare is false [2020-02-10 23:28:41,683 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-02-10 23:28:41,683 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-02-10 23:28:41,683 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-02-10 23:28:41,683 INFO L380 AbstractCegarLoop]: Difference is false [2020-02-10 23:28:41,684 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-02-10 23:28:41,684 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-02-10 23:28:41,698 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 60 places, 80 transitions [2020-02-10 23:28:41,924 INFO L129 PetriNetUnfolder]: 321/472 cut-off events. [2020-02-10 23:28:41,925 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2020-02-10 23:28:41,948 INFO L76 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 472 events. 321/472 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1550 event pairs. 0/471 useless extension candidates. Maximal degree in co-relation 416. Up to 140 conditions per place. [2020-02-10 23:28:41,948 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 80 transitions [2020-02-10 23:28:41,967 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 71 transitions [2020-02-10 23:28:41,971 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 71 transitions [2020-02-10 23:28:41,972 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 51 places, 71 transitions [2020-02-10 23:28:42,077 INFO L129 PetriNetUnfolder]: 321/470 cut-off events. [2020-02-10 23:28:42,078 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2020-02-10 23:28:42,083 INFO L76 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 470 events. 321/470 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1640 event pairs. 0/470 useless extension candidates. Maximal degree in co-relation 416. Up to 140 conditions per place. [2020-02-10 23:28:42,094 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 51 places, 71 transitions [2020-02-10 23:28:42,170 INFO L129 PetriNetUnfolder]: 321/470 cut-off events. [2020-02-10 23:28:42,170 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2020-02-10 23:28:42,174 INFO L76 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 470 events. 321/470 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1640 event pairs. 0/470 useless extension candidates. Maximal degree in co-relation 416. Up to 140 conditions per place. [2020-02-10 23:28:42,183 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-02-10 23:28:42,185 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-02-10 23:28:42,282 INFO L206 etLargeBlockEncoding]: Checked pairs total: 357 [2020-02-10 23:28:42,282 INFO L214 etLargeBlockEncoding]: Total number of compositions: 7 [2020-02-10 23:28:42,283 INFO L160 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 316 [2020-02-10 23:28:42,357 INFO L129 PetriNetUnfolder]: 321/462 cut-off events. [2020-02-10 23:28:42,357 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2020-02-10 23:28:42,375 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:42,376 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] [2020-02-10 23:28:42,377 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:42,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:42,385 INFO L82 PathProgramCache]: Analyzing trace with hash 877962276, now seen corresponding path program 1 times [2020-02-10 23:28:42,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:42,395 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209023890] [2020-02-10 23:28:42,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:42,571 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 23:28:42,571 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209023890] [2020-02-10 23:28:42,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:42,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:28:42,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908671406] [2020-02-10 23:28:42,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:28:42,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:42,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:28:42,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:28:42,602 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2020-02-10 23:28:42,604 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 64 transitions. Second operand 3 states. [2020-02-10 23:28:42,604 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:42,604 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2020-02-10 23:28:42,606 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:42,713 INFO L129 PetriNetUnfolder]: 285/420 cut-off events. [2020-02-10 23:28:42,713 INFO L130 PetriNetUnfolder]: For 541/541 co-relation queries the response was YES. [2020-02-10 23:28:42,716 INFO L76 FinitePrefix]: Finished finitePrefix Result has 906 conditions, 420 events. 285/420 cut-off events. For 541/541 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1592 event pairs. 7/427 useless extension candidates. Maximal degree in co-relation 410. Up to 140 conditions per place. [2020-02-10 23:28:42,726 INFO L145 encePairwiseOnDemand]: 84/87 looper letters, 5 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2020-02-10 23:28:42,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:28:42,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:28:42,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2020-02-10 23:28:42,745 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2020-02-10 23:28:42,746 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2020-02-10 23:28:42,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2020-02-10 23:28:42,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:42,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2020-02-10 23:28:42,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:28:42,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:28:42,769 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:28:42,771 INFO L178 Difference]: Start difference. First operand has 44 places, 64 transitions. Second operand 3 states and 245 transitions. [2020-02-10 23:28:42,774 INFO L206 Difference]: Finished difference. Result has 46 places, 62 transitions [2020-02-10 23:28:42,777 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=46, PETRI_TRANSITIONS=62} [2020-02-10 23:28:42,779 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 46 places, 62 transitions [2020-02-10 23:28:42,827 INFO L129 PetriNetUnfolder]: 285/420 cut-off events. [2020-02-10 23:28:42,827 INFO L130 PetriNetUnfolder]: For 406/406 co-relation queries the response was YES. [2020-02-10 23:28:42,830 INFO L76 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 420 events. 285/420 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1407 event pairs. 0/420 useless extension candidates. Maximal degree in co-relation 830. Up to 140 conditions per place. [2020-02-10 23:28:42,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 62 transitions [2020-02-10 23:28:42,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 62 transitions [2020-02-10 23:28:42,838 INFO L479 AbstractCegarLoop]: Abstraction has has 46 places, 62 transitions [2020-02-10 23:28:42,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:28:42,891 INFO L129 PetriNetUnfolder]: 285/419 cut-off events. [2020-02-10 23:28:42,891 INFO L130 PetriNetUnfolder]: For 406/406 co-relation queries the response was YES. [2020-02-10 23:28:42,891 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:42,892 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] [2020-02-10 23:28:42,892 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:42,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:42,893 INFO L82 PathProgramCache]: Analyzing trace with hash 18681362, now seen corresponding path program 1 times [2020-02-10 23:28:42,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:42,894 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418964074] [2020-02-10 23:28:42,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:42,959 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 23:28:42,960 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418964074] [2020-02-10 23:28:42,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:42,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:28:42,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40082488] [2020-02-10 23:28:42,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:28:42,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:42,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:28:42,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:28:42,965 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2020-02-10 23:28:42,965 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 62 transitions. Second operand 3 states. [2020-02-10 23:28:42,965 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:42,965 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2020-02-10 23:28:42,965 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:43,002 INFO L129 PetriNetUnfolder]: 110/189 cut-off events. [2020-02-10 23:28:43,002 INFO L130 PetriNetUnfolder]: For 343/343 co-relation queries the response was YES. [2020-02-10 23:28:43,004 INFO L76 FinitePrefix]: Finished finitePrefix Result has 396 conditions, 189 events. 110/189 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 640 event pairs. 51/240 useless extension candidates. Maximal degree in co-relation 376. Up to 60 conditions per place. [2020-02-10 23:28:43,009 INFO L145 encePairwiseOnDemand]: 81/87 looper letters, 2 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2020-02-10 23:28:43,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:28:43,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:28:43,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2020-02-10 23:28:43,012 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2020-02-10 23:28:43,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2020-02-10 23:28:43,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2020-02-10 23:28:43,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:43,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2020-02-10 23:28:43,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:28:43,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:28:43,018 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:28:43,018 INFO L178 Difference]: Start difference. First operand has 46 places, 62 transitions. Second operand 3 states and 245 transitions. [2020-02-10 23:28:43,019 INFO L206 Difference]: Finished difference. Result has 48 places, 57 transitions [2020-02-10 23:28:43,020 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=48, PETRI_TRANSITIONS=57} [2020-02-10 23:28:43,026 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 48 places, 57 transitions [2020-02-10 23:28:43,050 INFO L129 PetriNetUnfolder]: 110/189 cut-off events. [2020-02-10 23:28:43,050 INFO L130 PetriNetUnfolder]: For 176/176 co-relation queries the response was YES. [2020-02-10 23:28:43,052 INFO L76 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 189 events. 110/189 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 559 event pairs. 0/189 useless extension candidates. Maximal degree in co-relation 369. Up to 60 conditions per place. [2020-02-10 23:28:43,052 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 57 transitions [2020-02-10 23:28:43,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 57 transitions [2020-02-10 23:28:43,057 INFO L479 AbstractCegarLoop]: Abstraction has has 48 places, 57 transitions [2020-02-10 23:28:43,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:28:43,081 INFO L129 PetriNetUnfolder]: 110/188 cut-off events. [2020-02-10 23:28:43,082 INFO L130 PetriNetUnfolder]: For 176/176 co-relation queries the response was YES. [2020-02-10 23:28:43,082 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:43,082 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] [2020-02-10 23:28:43,083 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:43,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:43,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1803735002, now seen corresponding path program 1 times [2020-02-10 23:28:43,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:43,084 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091768239] [2020-02-10 23:28:43,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:43,166 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 23:28:43,166 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091768239] [2020-02-10 23:28:43,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:43,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:28:43,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661358533] [2020-02-10 23:28:43,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:28:43,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:43,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:28:43,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:28:43,169 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2020-02-10 23:28:43,169 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 57 transitions. Second operand 3 states. [2020-02-10 23:28:43,169 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:43,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2020-02-10 23:28:43,170 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:43,197 INFO L129 PetriNetUnfolder]: 64/128 cut-off events. [2020-02-10 23:28:43,197 INFO L130 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2020-02-10 23:28:43,199 INFO L76 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 128 events. 64/128 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 413 event pairs. 11/139 useless extension candidates. Maximal degree in co-relation 265. Up to 30 conditions per place. [2020-02-10 23:28:43,201 INFO L145 encePairwiseOnDemand]: 83/87 looper letters, 4 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2020-02-10 23:28:43,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:28:43,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:28:43,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2020-02-10 23:28:43,203 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2020-02-10 23:28:43,204 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2020-02-10 23:28:43,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2020-02-10 23:28:43,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:43,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2020-02-10 23:28:43,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:28:43,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:28:43,206 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:28:43,206 INFO L178 Difference]: Start difference. First operand has 48 places, 57 transitions. Second operand 3 states and 245 transitions. [2020-02-10 23:28:43,207 INFO L206 Difference]: Finished difference. Result has 50 places, 54 transitions [2020-02-10 23:28:43,207 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=50, PETRI_TRANSITIONS=54} [2020-02-10 23:28:43,208 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 50 places, 54 transitions [2020-02-10 23:28:43,221 INFO L129 PetriNetUnfolder]: 64/128 cut-off events. [2020-02-10 23:28:43,221 INFO L130 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2020-02-10 23:28:43,222 INFO L76 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 128 events. 64/128 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 359 event pairs. 0/128 useless extension candidates. Maximal degree in co-relation 248. Up to 30 conditions per place. [2020-02-10 23:28:43,222 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 54 transitions [2020-02-10 23:28:43,224 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 54 transitions [2020-02-10 23:28:43,224 INFO L479 AbstractCegarLoop]: Abstraction has has 50 places, 54 transitions [2020-02-10 23:28:43,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:28:43,237 INFO L129 PetriNetUnfolder]: 64/127 cut-off events. [2020-02-10 23:28:43,238 INFO L130 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2020-02-10 23:28:43,238 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:43,238 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] [2020-02-10 23:28:43,238 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:43,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:43,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1381444882, now seen corresponding path program 1 times [2020-02-10 23:28:43,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:43,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522792598] [2020-02-10 23:28:43,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:43,286 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 23:28:43,286 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522792598] [2020-02-10 23:28:43,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:43,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:28:43,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797147009] [2020-02-10 23:28:43,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:28:43,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:43,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:28:43,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:28:43,290 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2020-02-10 23:28:43,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 54 transitions. Second operand 3 states. [2020-02-10 23:28:43,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:43,291 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2020-02-10 23:28:43,291 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:43,309 INFO L129 PetriNetUnfolder]: 12/45 cut-off events. [2020-02-10 23:28:43,312 INFO L130 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2020-02-10 23:28:43,313 INFO L76 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 45 events. 12/45 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs. 17/62 useless extension candidates. Maximal degree in co-relation 84. Up to 8 conditions per place. [2020-02-10 23:28:43,314 INFO L145 encePairwiseOnDemand]: 80/87 looper letters, 1 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2020-02-10 23:28:43,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:28:43,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:28:43,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2020-02-10 23:28:43,319 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2020-02-10 23:28:43,320 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2020-02-10 23:28:43,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2020-02-10 23:28:43,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:43,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2020-02-10 23:28:43,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:28:43,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:28:43,322 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:28:43,322 INFO L178 Difference]: Start difference. First operand has 50 places, 54 transitions. Second operand 3 states and 245 transitions. [2020-02-10 23:28:43,324 INFO L206 Difference]: Finished difference. Result has 52 places, 37 transitions [2020-02-10 23:28:43,324 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2020-02-10 23:28:43,324 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 52 places, 37 transitions [2020-02-10 23:28:43,330 INFO L129 PetriNetUnfolder]: 12/45 cut-off events. [2020-02-10 23:28:43,331 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2020-02-10 23:28:43,331 INFO L76 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 45 events. 12/45 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs. 0/45 useless extension candidates. Maximal degree in co-relation 83. Up to 8 conditions per place. [2020-02-10 23:28:43,331 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 37 transitions [2020-02-10 23:28:43,332 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 37 transitions [2020-02-10 23:28:43,333 INFO L479 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions [2020-02-10 23:28:43,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:28:43,338 INFO L129 PetriNetUnfolder]: 12/44 cut-off events. [2020-02-10 23:28:43,338 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2020-02-10 23:28:43,338 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:43,339 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] [2020-02-10 23:28:43,339 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:43,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:43,340 INFO L82 PathProgramCache]: Analyzing trace with hash -2073555880, now seen corresponding path program 1 times [2020-02-10 23:28:43,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:43,345 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000563853] [2020-02-10 23:28:43,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:43,389 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 23:28:43,390 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000563853] [2020-02-10 23:28:43,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:43,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:28:43,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636983986] [2020-02-10 23:28:43,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:28:43,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:43,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:28:43,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:28:43,396 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2020-02-10 23:28:43,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions. Second operand 3 states. [2020-02-10 23:28:43,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:43,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2020-02-10 23:28:43,396 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:43,413 INFO L129 PetriNetUnfolder]: 1/24 cut-off events. [2020-02-10 23:28:43,414 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2020-02-10 23:28:43,414 INFO L76 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 24 events. 1/24 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs. 5/29 useless extension candidates. Maximal degree in co-relation 43. Up to 3 conditions per place. [2020-02-10 23:28:43,415 INFO L145 encePairwiseOnDemand]: 82/87 looper letters, 1 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2020-02-10 23:28:43,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:28:43,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:28:43,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2020-02-10 23:28:43,418 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9310344827586207 [2020-02-10 23:28:43,418 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 243 transitions. [2020-02-10 23:28:43,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 243 transitions. [2020-02-10 23:28:43,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:43,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 243 transitions. [2020-02-10 23:28:43,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:28:43,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:28:43,424 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:28:43,424 INFO L178 Difference]: Start difference. First operand has 52 places, 37 transitions. Second operand 3 states and 243 transitions. [2020-02-10 23:28:43,424 INFO L206 Difference]: Finished difference. Result has 54 places, 24 transitions [2020-02-10 23:28:43,425 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=54, PETRI_TRANSITIONS=24} [2020-02-10 23:28:43,425 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 54 places, 24 transitions [2020-02-10 23:28:43,431 INFO L129 PetriNetUnfolder]: 1/24 cut-off events. [2020-02-10 23:28:43,431 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-02-10 23:28:43,431 INFO L76 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 24 events. 1/24 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs. 0/24 useless extension candidates. Maximal degree in co-relation 42. Up to 3 conditions per place. [2020-02-10 23:28:43,431 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 24 transitions [2020-02-10 23:28:43,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 24 transitions [2020-02-10 23:28:43,432 INFO L479 AbstractCegarLoop]: Abstraction has has 54 places, 24 transitions [2020-02-10 23:28:43,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:28:43,436 INFO L129 PetriNetUnfolder]: 1/23 cut-off events. [2020-02-10 23:28:43,437 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-02-10 23:28:43,437 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:43,437 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] [2020-02-10 23:28:43,437 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:43,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:43,437 INFO L82 PathProgramCache]: Analyzing trace with hash 532592596, now seen corresponding path program 1 times [2020-02-10 23:28:43,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:43,439 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818837016] [2020-02-10 23:28:43,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:43,998 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 23 [2020-02-10 23:28:44,187 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 23 [2020-02-10 23:28:44,194 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 23:28:44,194 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818837016] [2020-02-10 23:28:44,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:44,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:28:44,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95078643] [2020-02-10 23:28:44,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:28:44,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:44,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:28:44,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:28:44,199 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:28:44,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 24 transitions. Second operand 9 states. [2020-02-10 23:28:44,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:44,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:28:44,201 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:44,498 INFO L129 PetriNetUnfolder]: 396/664 cut-off events. [2020-02-10 23:28:44,499 INFO L130 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2020-02-10 23:28:44,502 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1354 conditions, 664 events. 396/664 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3040 event pairs. 1/614 useless extension candidates. Maximal degree in co-relation 1330. Up to 225 conditions per place. [2020-02-10 23:28:44,511 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 27 selfloop transitions, 6 changer transitions 1/50 dead transitions. [2020-02-10 23:28:44,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:28:44,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:28:44,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:28:44,514 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:28:44,514 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:28:44,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:28:44,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:44,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:28:44,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:28:44,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:28:44,518 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:28:44,518 INFO L178 Difference]: Start difference. First operand has 54 places, 24 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:28:44,519 INFO L206 Difference]: Finished difference. Result has 69 places, 29 transitions [2020-02-10 23:28:44,519 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=153, PETRI_PLACES=69, PETRI_TRANSITIONS=29} [2020-02-10 23:28:44,519 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 69 places, 29 transitions [2020-02-10 23:28:44,528 INFO L129 PetriNetUnfolder]: 4/69 cut-off events. [2020-02-10 23:28:44,528 INFO L130 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2020-02-10 23:28:44,529 INFO L76 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 69 events. 4/69 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 225 event pairs. 0/61 useless extension candidates. Maximal degree in co-relation 150. Up to 8 conditions per place. [2020-02-10 23:28:44,529 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 29 transitions [2020-02-10 23:28:44,531 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 29 transitions [2020-02-10 23:28:44,531 INFO L479 AbstractCegarLoop]: Abstraction has has 68 places, 29 transitions [2020-02-10 23:28:44,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:28:44,539 INFO L129 PetriNetUnfolder]: 4/63 cut-off events. [2020-02-10 23:28:44,539 INFO L130 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2020-02-10 23:28:44,539 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:44,540 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] [2020-02-10 23:28:44,540 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:44,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:44,540 INFO L82 PathProgramCache]: Analyzing trace with hash -835433964, now seen corresponding path program 2 times [2020-02-10 23:28:44,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:44,541 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420090384] [2020-02-10 23:28:44,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:44,963 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 23:28:44,963 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420090384] [2020-02-10 23:28:44,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:44,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:28:44,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100977778] [2020-02-10 23:28:44,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:28:44,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:44,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:28:44,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:28:44,967 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:28:44,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 29 transitions. Second operand 9 states. [2020-02-10 23:28:44,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:44,968 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:28:44,968 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:45,436 INFO L129 PetriNetUnfolder]: 488/1097 cut-off events. [2020-02-10 23:28:45,436 INFO L130 PetriNetUnfolder]: For 1358/1379 co-relation queries the response was YES. [2020-02-10 23:28:45,445 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3089 conditions, 1097 events. 488/1097 cut-off events. For 1358/1379 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 7446 event pairs. 1/1044 useless extension candidates. Maximal degree in co-relation 3057. Up to 304 conditions per place. [2020-02-10 23:28:45,465 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 39 selfloop transitions, 10 changer transitions 1/66 dead transitions. [2020-02-10 23:28:45,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:28:45,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:28:45,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:28:45,473 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:28:45,473 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:28:45,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:28:45,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:45,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:28:45,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:28:45,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:28:45,479 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:28:45,480 INFO L178 Difference]: Start difference. First operand has 68 places, 29 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:28:45,481 INFO L206 Difference]: Finished difference. Result has 83 places, 37 transitions [2020-02-10 23:28:45,481 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=250, PETRI_PLACES=83, PETRI_TRANSITIONS=37} [2020-02-10 23:28:45,482 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 83 places, 37 transitions [2020-02-10 23:28:45,529 INFO L129 PetriNetUnfolder]: 16/258 cut-off events. [2020-02-10 23:28:45,529 INFO L130 PetriNetUnfolder]: For 374/377 co-relation queries the response was YES. [2020-02-10 23:28:45,532 INFO L76 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 258 events. 16/258 cut-off events. For 374/377 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1924 event pairs. 0/229 useless extension candidates. Maximal degree in co-relation 652. Up to 32 conditions per place. [2020-02-10 23:28:45,532 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 37 transitions [2020-02-10 23:28:45,538 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 37 transitions [2020-02-10 23:28:45,539 INFO L479 AbstractCegarLoop]: Abstraction has has 82 places, 37 transitions [2020-02-10 23:28:45,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:28:45,578 INFO L129 PetriNetUnfolder]: 16/232 cut-off events. [2020-02-10 23:28:45,578 INFO L130 PetriNetUnfolder]: For 374/376 co-relation queries the response was YES. [2020-02-10 23:28:45,578 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:45,579 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] [2020-02-10 23:28:45,579 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:45,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:45,579 INFO L82 PathProgramCache]: Analyzing trace with hash 2140479536, now seen corresponding path program 3 times [2020-02-10 23:28:45,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:45,580 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233509616] [2020-02-10 23:28:45,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:46,048 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 23:28:46,048 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233509616] [2020-02-10 23:28:46,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:46,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:28:46,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809568930] [2020-02-10 23:28:46,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:28:46,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:46,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:28:46,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:28:46,053 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:28:46,053 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 37 transitions. Second operand 9 states. [2020-02-10 23:28:46,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:46,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:28:46,054 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:46,550 INFO L129 PetriNetUnfolder]: 477/1040 cut-off events. [2020-02-10 23:28:46,551 INFO L130 PetriNetUnfolder]: For 3187/3216 co-relation queries the response was YES. [2020-02-10 23:28:46,563 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3827 conditions, 1040 events. 477/1040 cut-off events. For 3187/3216 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6681 event pairs. 1/981 useless extension candidates. Maximal degree in co-relation 3787. Up to 294 conditions per place. [2020-02-10 23:28:46,587 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 46 selfloop transitions, 8 changer transitions 1/71 dead transitions. [2020-02-10 23:28:46,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:28:46,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:28:46,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:28:46,590 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:28:46,590 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:28:46,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:28:46,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:46,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:28:46,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:28:46,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:28:46,594 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:28:46,595 INFO L178 Difference]: Start difference. First operand has 82 places, 37 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:28:46,595 INFO L206 Difference]: Finished difference. Result has 95 places, 40 transitions [2020-02-10 23:28:46,596 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=311, PETRI_PLACES=95, PETRI_TRANSITIONS=40} [2020-02-10 23:28:46,596 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 95 places, 40 transitions [2020-02-10 23:28:46,643 INFO L129 PetriNetUnfolder]: 17/280 cut-off events. [2020-02-10 23:28:46,643 INFO L130 PetriNetUnfolder]: For 599/603 co-relation queries the response was YES. [2020-02-10 23:28:46,647 INFO L76 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 280 events. 17/280 cut-off events. For 599/603 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2164 event pairs. 0/249 useless extension candidates. Maximal degree in co-relation 790. Up to 34 conditions per place. [2020-02-10 23:28:46,647 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 40 transitions [2020-02-10 23:28:46,654 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 40 transitions [2020-02-10 23:28:46,654 INFO L479 AbstractCegarLoop]: Abstraction has has 94 places, 40 transitions [2020-02-10 23:28:46,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:28:46,703 INFO L129 PetriNetUnfolder]: 17/252 cut-off events. [2020-02-10 23:28:46,703 INFO L130 PetriNetUnfolder]: For 599/603 co-relation queries the response was YES. [2020-02-10 23:28:46,703 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:46,703 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] [2020-02-10 23:28:46,704 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:46,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:46,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1067394156, now seen corresponding path program 4 times [2020-02-10 23:28:46,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:46,705 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406748051] [2020-02-10 23:28:46,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:47,046 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 23:28:47,047 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406748051] [2020-02-10 23:28:47,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:47,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:28:47,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909947136] [2020-02-10 23:28:47,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:28:47,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:47,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:28:47,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:28:47,049 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:28:47,050 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 40 transitions. Second operand 9 states. [2020-02-10 23:28:47,050 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:47,050 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:28:47,050 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:47,566 INFO L129 PetriNetUnfolder]: 476/1050 cut-off events. [2020-02-10 23:28:47,566 INFO L130 PetriNetUnfolder]: For 4025/4054 co-relation queries the response was YES. [2020-02-10 23:28:47,582 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4140 conditions, 1050 events. 476/1050 cut-off events. For 4025/4054 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6792 event pairs. 1/991 useless extension candidates. Maximal degree in co-relation 4094. Up to 294 conditions per place. [2020-02-10 23:28:47,611 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 45 selfloop transitions, 9 changer transitions 1/71 dead transitions. [2020-02-10 23:28:47,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:28:47,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:28:47,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:28:47,614 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:28:47,615 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:28:47,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:28:47,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:47,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:28:47,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:28:47,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:28:47,620 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:28:47,620 INFO L178 Difference]: Start difference. First operand has 94 places, 40 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:28:47,621 INFO L206 Difference]: Finished difference. Result has 105 places, 42 transitions [2020-02-10 23:28:47,621 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=357, PETRI_PLACES=105, PETRI_TRANSITIONS=42} [2020-02-10 23:28:47,621 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 105 places, 42 transitions [2020-02-10 23:28:47,679 INFO L129 PetriNetUnfolder]: 18/294 cut-off events. [2020-02-10 23:28:47,679 INFO L130 PetriNetUnfolder]: For 834/836 co-relation queries the response was YES. [2020-02-10 23:28:47,683 INFO L76 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 294 events. 18/294 cut-off events. For 834/836 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2305 event pairs. 0/262 useless extension candidates. Maximal degree in co-relation 898. Up to 36 conditions per place. [2020-02-10 23:28:47,683 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 42 transitions [2020-02-10 23:28:47,690 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 42 transitions [2020-02-10 23:28:47,690 INFO L479 AbstractCegarLoop]: Abstraction has has 104 places, 42 transitions [2020-02-10 23:28:47,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:28:47,737 INFO L129 PetriNetUnfolder]: 18/265 cut-off events. [2020-02-10 23:28:47,737 INFO L130 PetriNetUnfolder]: For 834/836 co-relation queries the response was YES. [2020-02-10 23:28:47,737 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:47,738 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] [2020-02-10 23:28:47,738 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:47,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:47,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1014878636, now seen corresponding path program 5 times [2020-02-10 23:28:47,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:47,739 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472392826] [2020-02-10 23:28:47,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:48,082 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 23:28:48,082 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472392826] [2020-02-10 23:28:48,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:48,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:28:48,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576312924] [2020-02-10 23:28:48,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:28:48,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:48,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:28:48,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:28:48,085 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:28:48,086 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 42 transitions. Second operand 9 states. [2020-02-10 23:28:48,087 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:48,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:28:48,087 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:48,607 INFO L129 PetriNetUnfolder]: 475/1040 cut-off events. [2020-02-10 23:28:48,607 INFO L130 PetriNetUnfolder]: For 5085/5114 co-relation queries the response was YES. [2020-02-10 23:28:48,620 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4459 conditions, 1040 events. 475/1040 cut-off events. For 5085/5114 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6716 event pairs. 1/981 useless extension candidates. Maximal degree in co-relation 4409. Up to 294 conditions per place. [2020-02-10 23:28:48,647 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 43 selfloop transitions, 12 changer transitions 0/71 dead transitions. [2020-02-10 23:28:48,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:28:48,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:28:48,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:28:48,650 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:28:48,650 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:28:48,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:28:48,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:48,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:28:48,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:28:48,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:28:48,655 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:28:48,655 INFO L178 Difference]: Start difference. First operand has 104 places, 42 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:28:48,656 INFO L206 Difference]: Finished difference. Result has 115 places, 44 transitions [2020-02-10 23:28:48,658 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=416, PETRI_PLACES=115, PETRI_TRANSITIONS=44} [2020-02-10 23:28:48,658 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 115 places, 44 transitions [2020-02-10 23:28:48,714 INFO L129 PetriNetUnfolder]: 18/293 cut-off events. [2020-02-10 23:28:48,714 INFO L130 PetriNetUnfolder]: For 1095/1097 co-relation queries the response was YES. [2020-02-10 23:28:48,717 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1022 conditions, 293 events. 18/293 cut-off events. For 1095/1097 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2310 event pairs. 0/260 useless extension candidates. Maximal degree in co-relation 969. Up to 36 conditions per place. [2020-02-10 23:28:48,718 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 44 transitions [2020-02-10 23:28:48,730 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 44 transitions [2020-02-10 23:28:48,730 INFO L479 AbstractCegarLoop]: Abstraction has has 115 places, 44 transitions [2020-02-10 23:28:48,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:28:48,776 INFO L129 PetriNetUnfolder]: 18/265 cut-off events. [2020-02-10 23:28:48,776 INFO L130 PetriNetUnfolder]: For 1095/1098 co-relation queries the response was YES. [2020-02-10 23:28:48,777 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:48,777 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] [2020-02-10 23:28:48,777 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:48,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:48,777 INFO L82 PathProgramCache]: Analyzing trace with hash 387127030, now seen corresponding path program 6 times [2020-02-10 23:28:48,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:48,783 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104091538] [2020-02-10 23:28:48,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:49,160 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 23:28:49,161 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104091538] [2020-02-10 23:28:49,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:49,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:28:49,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335047968] [2020-02-10 23:28:49,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:28:49,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:49,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:28:49,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:28:49,163 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:28:49,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 44 transitions. Second operand 9 states. [2020-02-10 23:28:49,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:49,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:28:49,163 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:49,662 INFO L129 PetriNetUnfolder]: 482/1144 cut-off events. [2020-02-10 23:28:49,662 INFO L130 PetriNetUnfolder]: For 6844/6873 co-relation queries the response was YES. [2020-02-10 23:28:49,672 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4970 conditions, 1144 events. 482/1144 cut-off events. For 6844/6873 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 8125 event pairs. 1/1091 useless extension candidates. Maximal degree in co-relation 4916. Up to 304 conditions per place. [2020-02-10 23:28:49,696 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 40 selfloop transitions, 17 changer transitions 0/73 dead transitions. [2020-02-10 23:28:49,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:28:49,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:28:49,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:28:49,699 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:28:49,699 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:28:49,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:28:49,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:49,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:28:49,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:28:49,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:28:49,703 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:28:49,703 INFO L178 Difference]: Start difference. First operand has 115 places, 44 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:28:49,704 INFO L206 Difference]: Finished difference. Result has 127 places, 49 transitions [2020-02-10 23:28:49,705 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=530, PETRI_PLACES=127, PETRI_TRANSITIONS=49} [2020-02-10 23:28:49,705 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 127 places, 49 transitions [2020-02-10 23:28:49,774 INFO L129 PetriNetUnfolder]: 22/347 cut-off events. [2020-02-10 23:28:49,774 INFO L130 PetriNetUnfolder]: For 1675/1689 co-relation queries the response was YES. [2020-02-10 23:28:49,778 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 347 events. 22/347 cut-off events. For 1675/1689 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2933 event pairs. 0/310 useless extension candidates. Maximal degree in co-relation 1235. Up to 44 conditions per place. [2020-02-10 23:28:49,779 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 49 transitions [2020-02-10 23:28:49,786 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 49 transitions [2020-02-10 23:28:49,786 INFO L479 AbstractCegarLoop]: Abstraction has has 127 places, 49 transitions [2020-02-10 23:28:49,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:28:49,833 INFO L129 PetriNetUnfolder]: 22/315 cut-off events. [2020-02-10 23:28:49,833 INFO L130 PetriNetUnfolder]: For 1675/1689 co-relation queries the response was YES. [2020-02-10 23:28:49,834 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:49,834 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] [2020-02-10 23:28:49,834 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:49,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:49,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1831706986, now seen corresponding path program 7 times [2020-02-10 23:28:49,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:49,835 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280703106] [2020-02-10 23:28:49,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:50,210 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 23:28:50,211 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280703106] [2020-02-10 23:28:50,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:50,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:28:50,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621002114] [2020-02-10 23:28:50,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:28:50,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:50,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:28:50,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:28:50,214 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:28:50,214 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 49 transitions. Second operand 9 states. [2020-02-10 23:28:50,214 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:50,215 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:28:50,215 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:51,019 INFO L129 PetriNetUnfolder]: 643/1930 cut-off events. [2020-02-10 23:28:51,019 INFO L130 PetriNetUnfolder]: For 13143/13176 co-relation queries the response was YES. [2020-02-10 23:28:51,040 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7878 conditions, 1930 events. 643/1930 cut-off events. For 13143/13176 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 18431 event pairs. 1/1859 useless extension candidates. Maximal degree in co-relation 7819. Up to 389 conditions per place. [2020-02-10 23:28:51,126 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 55 selfloop transitions, 22 changer transitions 2/95 dead transitions. [2020-02-10 23:28:51,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:28:51,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:28:51,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:28:51,132 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:28:51,133 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:28:51,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:28:51,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:51,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:28:51,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:28:51,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:28:51,138 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:28:51,138 INFO L178 Difference]: Start difference. First operand has 127 places, 49 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:28:51,139 INFO L206 Difference]: Finished difference. Result has 142 places, 59 transitions [2020-02-10 23:28:51,140 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=754, PETRI_PLACES=142, PETRI_TRANSITIONS=59} [2020-02-10 23:28:51,140 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 142 places, 59 transitions [2020-02-10 23:28:51,288 INFO L129 PetriNetUnfolder]: 28/528 cut-off events. [2020-02-10 23:28:51,288 INFO L130 PetriNetUnfolder]: For 3610/3705 co-relation queries the response was YES. [2020-02-10 23:28:51,296 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2135 conditions, 528 events. 28/528 cut-off events. For 3610/3705 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5211 event pairs. 0/466 useless extension candidates. Maximal degree in co-relation 2069. Up to 61 conditions per place. [2020-02-10 23:28:51,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 59 transitions [2020-02-10 23:28:51,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 59 transitions [2020-02-10 23:28:51,310 INFO L479 AbstractCegarLoop]: Abstraction has has 141 places, 59 transitions [2020-02-10 23:28:51,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:28:51,396 INFO L129 PetriNetUnfolder]: 28/470 cut-off events. [2020-02-10 23:28:51,396 INFO L130 PetriNetUnfolder]: For 3610/3705 co-relation queries the response was YES. [2020-02-10 23:28:51,396 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:51,396 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] [2020-02-10 23:28:51,396 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:51,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:51,397 INFO L82 PathProgramCache]: Analyzing trace with hash -903855960, now seen corresponding path program 8 times [2020-02-10 23:28:51,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:51,397 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773365816] [2020-02-10 23:28:51,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:51,722 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 23:28:51,723 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773365816] [2020-02-10 23:28:51,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:51,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:28:51,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956920372] [2020-02-10 23:28:51,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:28:51,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:51,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:28:51,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:28:51,725 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:28:51,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 59 transitions. Second operand 9 states. [2020-02-10 23:28:51,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:51,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:28:51,726 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:53,016 INFO L129 PetriNetUnfolder]: 722/2381 cut-off events. [2020-02-10 23:28:53,016 INFO L130 PetriNetUnfolder]: For 23275/23310 co-relation queries the response was YES. [2020-02-10 23:28:53,391 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11526 conditions, 2381 events. 722/2381 cut-off events. For 23275/23310 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 24217 event pairs. 1/2295 useless extension candidates. Maximal degree in co-relation 11459. Up to 612 conditions per place. [2020-02-10 23:28:53,448 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 73 selfloop transitions, 22 changer transitions 0/111 dead transitions. [2020-02-10 23:28:53,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:28:53,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:28:53,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:28:53,452 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:28:53,452 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:28:53,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:28:53,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:53,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:28:53,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:28:53,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:28:53,463 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:28:53,463 INFO L178 Difference]: Start difference. First operand has 141 places, 59 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:28:53,464 INFO L206 Difference]: Finished difference. Result has 156 places, 71 transitions [2020-02-10 23:28:53,464 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1068, PETRI_PLACES=156, PETRI_TRANSITIONS=71} [2020-02-10 23:28:53,465 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 156 places, 71 transitions [2020-02-10 23:28:53,765 INFO L129 PetriNetUnfolder]: 50/960 cut-off events. [2020-02-10 23:28:53,765 INFO L130 PetriNetUnfolder]: For 8353/8445 co-relation queries the response was YES. [2020-02-10 23:28:53,775 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4137 conditions, 960 events. 50/960 cut-off events. For 8353/8445 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 11132 event pairs. 2/865 useless extension candidates. Maximal degree in co-relation 4063. Up to 106 conditions per place. [2020-02-10 23:28:53,775 INFO L82 GeneralOperation]: Start removeDead. Operand has 156 places, 71 transitions [2020-02-10 23:28:53,792 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 71 transitions [2020-02-10 23:28:53,792 INFO L479 AbstractCegarLoop]: Abstraction has has 156 places, 71 transitions [2020-02-10 23:28:53,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:28:53,949 INFO L129 PetriNetUnfolder]: 50/858 cut-off events. [2020-02-10 23:28:53,949 INFO L130 PetriNetUnfolder]: For 8459/8567 co-relation queries the response was YES. [2020-02-10 23:28:53,949 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:53,949 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] [2020-02-10 23:28:53,950 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:53,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:53,950 INFO L82 PathProgramCache]: Analyzing trace with hash 305871822, now seen corresponding path program 9 times [2020-02-10 23:28:53,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:53,950 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317933620] [2020-02-10 23:28:53,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:54,276 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 23:28:54,277 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317933620] [2020-02-10 23:28:54,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:54,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:28:54,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846297860] [2020-02-10 23:28:54,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:28:54,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:54,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:28:54,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:28:54,279 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:28:54,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 71 transitions. Second operand 9 states. [2020-02-10 23:28:54,280 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:54,280 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:28:54,280 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:55,850 INFO L129 PetriNetUnfolder]: 691/2466 cut-off events. [2020-02-10 23:28:55,851 INFO L130 PetriNetUnfolder]: For 33129/33294 co-relation queries the response was YES. [2020-02-10 23:28:55,875 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13397 conditions, 2466 events. 691/2466 cut-off events. For 33129/33294 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 25731 event pairs. 3/2371 useless extension candidates. Maximal degree in co-relation 13322. Up to 612 conditions per place. [2020-02-10 23:28:55,918 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 83 selfloop transitions, 23 changer transitions 0/122 dead transitions. [2020-02-10 23:28:55,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:28:55,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:28:55,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:28:55,920 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:28:55,920 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:28:55,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:28:55,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:55,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:28:55,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:28:55,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:28:55,924 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:28:55,924 INFO L178 Difference]: Start difference. First operand has 156 places, 71 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:28:55,925 INFO L206 Difference]: Finished difference. Result has 170 places, 80 transitions [2020-02-10 23:28:55,925 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1337, PETRI_PLACES=170, PETRI_TRANSITIONS=80} [2020-02-10 23:28:55,926 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 170 places, 80 transitions [2020-02-10 23:28:56,340 INFO L129 PetriNetUnfolder]: 60/1244 cut-off events. [2020-02-10 23:28:56,340 INFO L130 PetriNetUnfolder]: For 14032/14146 co-relation queries the response was YES. [2020-02-10 23:28:56,354 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5794 conditions, 1244 events. 60/1244 cut-off events. For 14032/14146 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 15445 event pairs. 6/1125 useless extension candidates. Maximal degree in co-relation 5713. Up to 137 conditions per place. [2020-02-10 23:28:56,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 80 transitions [2020-02-10 23:28:56,377 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 80 transitions [2020-02-10 23:28:56,378 INFO L479 AbstractCegarLoop]: Abstraction has has 170 places, 80 transitions [2020-02-10 23:28:56,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:28:56,627 INFO L129 PetriNetUnfolder]: 60/1112 cut-off events. [2020-02-10 23:28:56,627 INFO L130 PetriNetUnfolder]: For 13924/14036 co-relation queries the response was YES. [2020-02-10 23:28:56,627 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:56,627 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] [2020-02-10 23:28:56,627 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:56,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:56,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1336521022, now seen corresponding path program 10 times [2020-02-10 23:28:56,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:56,628 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67204898] [2020-02-10 23:28:56,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:56,960 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 23:28:56,961 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67204898] [2020-02-10 23:28:56,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:56,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:28:56,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110749047] [2020-02-10 23:28:56,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:28:56,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:56,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:28:56,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:28:56,963 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:28:56,963 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 80 transitions. Second operand 9 states. [2020-02-10 23:28:56,963 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:56,963 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:28:56,964 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:58,839 INFO L129 PetriNetUnfolder]: 743/2711 cut-off events. [2020-02-10 23:28:58,839 INFO L130 PetriNetUnfolder]: For 39248/39599 co-relation queries the response was YES. [2020-02-10 23:28:58,868 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14571 conditions, 2711 events. 743/2711 cut-off events. For 39248/39599 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 29078 event pairs. 1/2614 useless extension candidates. Maximal degree in co-relation 14489. Up to 720 conditions per place. [2020-02-10 23:28:58,916 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 81 selfloop transitions, 28 changer transitions 0/125 dead transitions. [2020-02-10 23:28:58,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:28:58,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:28:58,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:28:58,918 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:28:58,919 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:28:58,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:28:58,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:58,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:28:58,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:28:58,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:28:58,923 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:28:58,923 INFO L178 Difference]: Start difference. First operand has 170 places, 80 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:28:58,924 INFO L206 Difference]: Finished difference. Result has 185 places, 90 transitions [2020-02-10 23:28:58,924 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1337, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1636, PETRI_PLACES=185, PETRI_TRANSITIONS=90} [2020-02-10 23:28:58,925 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 185 places, 90 transitions [2020-02-10 23:28:59,378 INFO L129 PetriNetUnfolder]: 60/1243 cut-off events. [2020-02-10 23:28:59,379 INFO L130 PetriNetUnfolder]: For 16679/16805 co-relation queries the response was YES. [2020-02-10 23:28:59,394 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6121 conditions, 1243 events. 60/1243 cut-off events. For 16679/16805 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 15431 event pairs. 7/1126 useless extension candidates. Maximal degree in co-relation 6032. Up to 137 conditions per place. [2020-02-10 23:28:59,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 90 transitions [2020-02-10 23:28:59,419 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 90 transitions [2020-02-10 23:28:59,419 INFO L479 AbstractCegarLoop]: Abstraction has has 185 places, 90 transitions [2020-02-10 23:28:59,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:28:59,676 INFO L129 PetriNetUnfolder]: 60/1112 cut-off events. [2020-02-10 23:28:59,676 INFO L130 PetriNetUnfolder]: For 16741/16874 co-relation queries the response was YES. [2020-02-10 23:28:59,676 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:59,676 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] [2020-02-10 23:28:59,676 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:59,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:59,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1573740422, now seen corresponding path program 11 times [2020-02-10 23:28:59,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:59,677 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326243271] [2020-02-10 23:28:59,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:00,056 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 23:29:00,057 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326243271] [2020-02-10 23:29:00,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:00,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:29:00,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875731146] [2020-02-10 23:29:00,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:29:00,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:00,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:29:00,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:29:00,060 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:29:00,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 90 transitions. Second operand 9 states. [2020-02-10 23:29:00,060 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:00,060 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:29:00,061 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:02,110 INFO L129 PetriNetUnfolder]: 704/2559 cut-off events. [2020-02-10 23:29:02,110 INFO L130 PetriNetUnfolder]: For 47039/47754 co-relation queries the response was YES. [2020-02-10 23:29:02,156 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15147 conditions, 2559 events. 704/2559 cut-off events. For 47039/47754 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 27019 event pairs. 1/2461 useless extension candidates. Maximal degree in co-relation 15057. Up to 567 conditions per place. [2020-02-10 23:29:02,206 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 85 selfloop transitions, 37 changer transitions 0/138 dead transitions. [2020-02-10 23:29:02,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:29:02,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:29:02,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:29:02,209 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:29:02,209 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:29:02,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:29:02,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:02,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:29:02,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:29:02,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:29:02,213 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:29:02,213 INFO L178 Difference]: Start difference. First operand has 185 places, 90 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:29:02,214 INFO L206 Difference]: Finished difference. Result has 197 places, 98 transitions [2020-02-10 23:29:02,215 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1919, PETRI_PLACES=197, PETRI_TRANSITIONS=98} [2020-02-10 23:29:02,215 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 197 places, 98 transitions [2020-02-10 23:29:02,713 INFO L129 PetriNetUnfolder]: 64/1293 cut-off events. [2020-02-10 23:29:02,714 INFO L130 PetriNetUnfolder]: For 20311/20452 co-relation queries the response was YES. [2020-02-10 23:29:02,730 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6671 conditions, 1293 events. 64/1293 cut-off events. For 20311/20452 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 16141 event pairs. 6/1178 useless extension candidates. Maximal degree in co-relation 6577. Up to 141 conditions per place. [2020-02-10 23:29:02,730 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 98 transitions [2020-02-10 23:29:02,756 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 98 transitions [2020-02-10 23:29:02,756 INFO L479 AbstractCegarLoop]: Abstraction has has 197 places, 98 transitions [2020-02-10 23:29:02,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:29:03,035 INFO L129 PetriNetUnfolder]: 64/1159 cut-off events. [2020-02-10 23:29:03,035 INFO L130 PetriNetUnfolder]: For 20334/20477 co-relation queries the response was YES. [2020-02-10 23:29:03,035 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:03,035 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] [2020-02-10 23:29:03,035 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:03,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:03,036 INFO L82 PathProgramCache]: Analyzing trace with hash -2023987124, now seen corresponding path program 1 times [2020-02-10 23:29:03,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:03,036 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112151729] [2020-02-10 23:29:03,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:03,062 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 23:29:03,062 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112151729] [2020-02-10 23:29:03,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:03,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:29:03,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361585925] [2020-02-10 23:29:03,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:29:03,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:03,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:29:03,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:29:03,064 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2020-02-10 23:29:03,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 98 transitions. Second operand 3 states. [2020-02-10 23:29:03,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:03,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2020-02-10 23:29:03,065 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:03,688 INFO L129 PetriNetUnfolder]: 0/1201 cut-off events. [2020-02-10 23:29:03,688 INFO L130 PetriNetUnfolder]: For 20321/20454 co-relation queries the response was YES. [2020-02-10 23:29:03,705 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6553 conditions, 1201 events. 0/1201 cut-off events. For 20321/20454 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 15347 event pairs. 32/1099 useless extension candidates. Maximal degree in co-relation 6457. Up to 141 conditions per place. [2020-02-10 23:29:03,734 INFO L145 encePairwiseOnDemand]: 85/87 looper letters, 1 selfloop transitions, 1 changer transitions 2/96 dead transitions. [2020-02-10 23:29:03,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:29:03,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:29:03,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2020-02-10 23:29:03,736 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9195402298850575 [2020-02-10 23:29:03,736 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 240 transitions. [2020-02-10 23:29:03,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 240 transitions. [2020-02-10 23:29:03,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:03,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 240 transitions. [2020-02-10 23:29:03,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:29:03,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:29:03,738 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:29:03,738 INFO L178 Difference]: Start difference. First operand has 197 places, 98 transitions. Second operand 3 states and 240 transitions. [2020-02-10 23:29:03,739 INFO L206 Difference]: Finished difference. Result has 199 places, 94 transitions [2020-02-10 23:29:03,739 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1919, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1853, PETRI_PLACES=199, PETRI_TRANSITIONS=94} [2020-02-10 23:29:03,739 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 199 places, 94 transitions [2020-02-10 23:29:04,231 INFO L129 PetriNetUnfolder]: 0/1190 cut-off events. [2020-02-10 23:29:04,231 INFO L130 PetriNetUnfolder]: For 20028/20166 co-relation queries the response was YES. [2020-02-10 23:29:04,244 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6444 conditions, 1190 events. 0/1190 cut-off events. For 20028/20166 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 15263 event pairs. 7/1078 useless extension candidates. Maximal degree in co-relation 6352. Up to 139 conditions per place. [2020-02-10 23:29:04,244 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 94 transitions [2020-02-10 23:29:04,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 94 transitions [2020-02-10 23:29:04,267 INFO L479 AbstractCegarLoop]: Abstraction has has 197 places, 94 transitions [2020-02-10 23:29:04,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:29:04,511 INFO L129 PetriNetUnfolder]: 0/1056 cut-off events. [2020-02-10 23:29:04,511 INFO L130 PetriNetUnfolder]: For 20028/20166 co-relation queries the response was YES. [2020-02-10 23:29:04,511 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:04,511 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] [2020-02-10 23:29:04,511 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:04,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:04,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1358008420, now seen corresponding path program 12 times [2020-02-10 23:29:04,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:04,512 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057184496] [2020-02-10 23:29:04,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:04,847 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 23:29:04,847 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057184496] [2020-02-10 23:29:04,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:04,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:29:04,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910825453] [2020-02-10 23:29:04,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:29:04,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:04,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:29:04,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:29:04,849 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:29:04,849 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 94 transitions. Second operand 9 states. [2020-02-10 23:29:04,850 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:04,850 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:29:04,850 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:06,721 INFO L129 PetriNetUnfolder]: 578/2446 cut-off events. [2020-02-10 23:29:06,722 INFO L130 PetriNetUnfolder]: For 53186/53901 co-relation queries the response was YES. [2020-02-10 23:29:06,754 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15573 conditions, 2446 events. 578/2446 cut-off events. For 53186/53901 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 26592 event pairs. 1/2357 useless extension candidates. Maximal degree in co-relation 15480. Up to 720 conditions per place. [2020-02-10 23:29:06,806 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 86 selfloop transitions, 32 changer transitions 0/132 dead transitions. [2020-02-10 23:29:06,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:29:06,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:29:06,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:29:06,808 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:29:06,808 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:29:06,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:29:06,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:06,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:29:06,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:29:06,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:29:06,811 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:29:06,811 INFO L178 Difference]: Start difference. First operand has 197 places, 94 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:29:06,813 INFO L206 Difference]: Finished difference. Result has 209 places, 98 transitions [2020-02-10 23:29:06,813 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1853, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2017, PETRI_PLACES=209, PETRI_TRANSITIONS=98} [2020-02-10 23:29:06,813 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 209 places, 98 transitions [2020-02-10 23:29:07,282 INFO L129 PetriNetUnfolder]: 0/1196 cut-off events. [2020-02-10 23:29:07,282 INFO L130 PetriNetUnfolder]: For 22618/22764 co-relation queries the response was YES. [2020-02-10 23:29:07,297 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6744 conditions, 1196 events. 0/1196 cut-off events. For 22618/22764 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 15345 event pairs. 7/1083 useless extension candidates. Maximal degree in co-relation 6647. Up to 140 conditions per place. [2020-02-10 23:29:07,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 98 transitions [2020-02-10 23:29:07,321 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 98 transitions [2020-02-10 23:29:07,321 INFO L479 AbstractCegarLoop]: Abstraction has has 209 places, 98 transitions [2020-02-10 23:29:07,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:29:07,582 INFO L129 PetriNetUnfolder]: 0/1062 cut-off events. [2020-02-10 23:29:07,582 INFO L130 PetriNetUnfolder]: For 22728/22883 co-relation queries the response was YES. [2020-02-10 23:29:07,582 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:07,583 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] [2020-02-10 23:29:07,583 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:07,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:07,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1634440310, now seen corresponding path program 13 times [2020-02-10 23:29:07,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:07,584 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966608190] [2020-02-10 23:29:07,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:07,984 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 23:29:07,985 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966608190] [2020-02-10 23:29:07,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:07,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:29:07,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766669661] [2020-02-10 23:29:07,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:29:07,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:07,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:29:07,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:29:07,987 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:29:07,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 98 transitions. Second operand 9 states. [2020-02-10 23:29:07,988 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:07,988 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:29:07,988 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:10,265 INFO L129 PetriNetUnfolder]: 572/2488 cut-off events. [2020-02-10 23:29:10,266 INFO L130 PetriNetUnfolder]: For 61557/62249 co-relation queries the response was YES. [2020-02-10 23:29:10,300 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16778 conditions, 2488 events. 572/2488 cut-off events. For 61557/62249 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 27498 event pairs. 1/2402 useless extension candidates. Maximal degree in co-relation 16680. Up to 567 conditions per place. [2020-02-10 23:29:10,356 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 98 selfloop transitions, 35 changer transitions 1/148 dead transitions. [2020-02-10 23:29:10,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:29:10,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:29:10,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:29:10,358 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:29:10,358 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:29:10,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:29:10,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:10,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:29:10,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:29:10,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:29:10,361 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:29:10,361 INFO L178 Difference]: Start difference. First operand has 209 places, 98 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:29:10,363 INFO L206 Difference]: Finished difference. Result has 222 places, 103 transitions [2020-02-10 23:29:10,363 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2017, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2271, PETRI_PLACES=222, PETRI_TRANSITIONS=103} [2020-02-10 23:29:10,364 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 222 places, 103 transitions [2020-02-10 23:29:10,972 INFO L129 PetriNetUnfolder]: 0/1335 cut-off events. [2020-02-10 23:29:10,972 INFO L130 PetriNetUnfolder]: For 29184/29340 co-relation queries the response was YES. [2020-02-10 23:29:10,986 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7883 conditions, 1335 events. 0/1335 cut-off events. For 29184/29340 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 17535 event pairs. 7/1204 useless extension candidates. Maximal degree in co-relation 7780. Up to 153 conditions per place. [2020-02-10 23:29:10,987 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 103 transitions [2020-02-10 23:29:11,010 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 103 transitions [2020-02-10 23:29:11,011 INFO L479 AbstractCegarLoop]: Abstraction has has 221 places, 103 transitions [2020-02-10 23:29:11,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:29:11,340 INFO L129 PetriNetUnfolder]: 0/1188 cut-off events. [2020-02-10 23:29:11,340 INFO L130 PetriNetUnfolder]: For 29331/29489 co-relation queries the response was YES. [2020-02-10 23:29:11,340 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:11,341 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] [2020-02-10 23:29:11,341 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:11,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:11,341 INFO L82 PathProgramCache]: Analyzing trace with hash -897955120, now seen corresponding path program 14 times [2020-02-10 23:29:11,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:11,341 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339249094] [2020-02-10 23:29:11,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:11,635 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 23:29:11,635 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339249094] [2020-02-10 23:29:11,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:11,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:29:11,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726617517] [2020-02-10 23:29:11,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:29:11,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:11,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:29:11,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:29:11,637 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:29:11,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 103 transitions. Second operand 9 states. [2020-02-10 23:29:11,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:11,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:29:11,637 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:14,575 INFO L129 PetriNetUnfolder]: 566/2913 cut-off events. [2020-02-10 23:29:14,575 INFO L130 PetriNetUnfolder]: For 83806/84411 co-relation queries the response was YES. [2020-02-10 23:29:14,611 INFO L76 FinitePrefix]: Finished finitePrefix Result has 19875 conditions, 2913 events. 566/2913 cut-off events. For 83806/84411 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 35175 event pairs. 1/2808 useless extension candidates. Maximal degree in co-relation 19771. Up to 603 conditions per place. [2020-02-10 23:29:14,669 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 111 selfloop transitions, 38 changer transitions 1/164 dead transitions. [2020-02-10 23:29:14,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:29:14,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:29:14,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:29:14,671 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:29:14,671 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:29:14,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:29:14,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:14,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:29:14,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:29:14,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:29:14,675 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:29:14,675 INFO L178 Difference]: Start difference. First operand has 221 places, 103 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:29:14,677 INFO L206 Difference]: Finished difference. Result has 235 places, 111 transitions [2020-02-10 23:29:14,677 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2271, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2595, PETRI_PLACES=235, PETRI_TRANSITIONS=111} [2020-02-10 23:29:14,677 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 235 places, 111 transitions [2020-02-10 23:29:15,736 INFO L129 PetriNetUnfolder]: 0/1702 cut-off events. [2020-02-10 23:29:15,736 INFO L130 PetriNetUnfolder]: For 43337/43641 co-relation queries the response was YES. [2020-02-10 23:29:15,760 INFO L76 FinitePrefix]: Finished finitePrefix Result has 10470 conditions, 1702 events. 0/1702 cut-off events. For 43337/43641 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 23687 event pairs. 12/1537 useless extension candidates. Maximal degree in co-relation 10360. Up to 193 conditions per place. [2020-02-10 23:29:15,760 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 111 transitions [2020-02-10 23:29:15,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 111 transitions [2020-02-10 23:29:15,800 INFO L479 AbstractCegarLoop]: Abstraction has has 234 places, 111 transitions [2020-02-10 23:29:15,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:29:16,281 INFO L129 PetriNetUnfolder]: 0/1515 cut-off events. [2020-02-10 23:29:16,281 INFO L130 PetriNetUnfolder]: For 43240/43550 co-relation queries the response was YES. [2020-02-10 23:29:16,282 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:16,282 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] [2020-02-10 23:29:16,282 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:16,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:16,282 INFO L82 PathProgramCache]: Analyzing trace with hash -2087282060, now seen corresponding path program 15 times [2020-02-10 23:29:16,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:16,282 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902417575] [2020-02-10 23:29:16,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:16,686 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 23:29:16,686 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902417575] [2020-02-10 23:29:16,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:16,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:29:16,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924415849] [2020-02-10 23:29:16,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:29:16,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:16,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:29:16,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:29:16,688 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:29:16,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 111 transitions. Second operand 9 states. [2020-02-10 23:29:16,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:16,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:29:16,689 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:21,433 INFO L129 PetriNetUnfolder]: 659/3805 cut-off events. [2020-02-10 23:29:21,433 INFO L130 PetriNetUnfolder]: For 115989/116703 co-relation queries the response was YES. [2020-02-10 23:29:21,484 INFO L76 FinitePrefix]: Finished finitePrefix Result has 27018 conditions, 3805 events. 659/3805 cut-off events. For 115989/116703 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 49022 event pairs. 1/3706 useless extension candidates. Maximal degree in co-relation 26907. Up to 903 conditions per place. [2020-02-10 23:29:21,570 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 129 selfloop transitions, 31 changer transitions 1/175 dead transitions. [2020-02-10 23:29:21,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:29:21,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:29:21,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:29:21,571 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:29:21,572 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:29:21,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:29:21,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:21,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:29:21,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:29:21,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:29:21,574 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:29:21,574 INFO L178 Difference]: Start difference. First operand has 234 places, 111 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:29:21,576 INFO L206 Difference]: Finished difference. Result has 249 places, 122 transitions [2020-02-10 23:29:21,577 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2595, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3013, PETRI_PLACES=249, PETRI_TRANSITIONS=122} [2020-02-10 23:29:21,577 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 249 places, 122 transitions [2020-02-10 23:29:23,936 INFO L129 PetriNetUnfolder]: 0/2363 cut-off events. [2020-02-10 23:29:23,937 INFO L130 PetriNetUnfolder]: For 68052/68352 co-relation queries the response was YES. [2020-02-10 23:29:23,966 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15012 conditions, 2363 events. 0/2363 cut-off events. For 68052/68352 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 34902 event pairs. 14/2120 useless extension candidates. Maximal degree in co-relation 14894. Up to 262 conditions per place. [2020-02-10 23:29:23,966 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 122 transitions [2020-02-10 23:29:24,013 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 122 transitions [2020-02-10 23:29:24,013 INFO L479 AbstractCegarLoop]: Abstraction has has 248 places, 122 transitions [2020-02-10 23:29:24,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:29:24,828 INFO L129 PetriNetUnfolder]: 0/2107 cut-off events. [2020-02-10 23:29:24,828 INFO L130 PetriNetUnfolder]: For 68277/68615 co-relation queries the response was YES. [2020-02-10 23:29:24,828 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:24,828 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] [2020-02-10 23:29:24,828 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:24,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:24,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1086948426, now seen corresponding path program 16 times [2020-02-10 23:29:24,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:24,829 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769901857] [2020-02-10 23:29:24,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:25,170 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 23:29:25,170 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769901857] [2020-02-10 23:29:25,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:25,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:29:25,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409184289] [2020-02-10 23:29:25,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:29:25,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:25,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:29:25,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:29:25,173 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:29:25,174 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 122 transitions. Second operand 9 states. [2020-02-10 23:29:25,174 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:25,174 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:29:25,174 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:27,211 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-02-10 23:29:32,348 INFO L129 PetriNetUnfolder]: 626/4557 cut-off events. [2020-02-10 23:29:32,348 INFO L130 PetriNetUnfolder]: For 156444/157298 co-relation queries the response was YES. [2020-02-10 23:29:32,412 INFO L76 FinitePrefix]: Finished finitePrefix Result has 33140 conditions, 4557 events. 626/4557 cut-off events. For 156444/157298 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 64142 event pairs. 3/4453 useless extension candidates. Maximal degree in co-relation 33021. Up to 948 conditions per place. [2020-02-10 23:29:32,515 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 131 selfloop transitions, 44 changer transitions 1/190 dead transitions. [2020-02-10 23:29:32,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:29:32,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:29:32,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:29:32,517 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:29:32,517 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:29:32,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:29:32,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:32,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:29:32,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:29:32,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:29:32,519 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:29:32,520 INFO L178 Difference]: Start difference. First operand has 248 places, 122 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:29:32,522 INFO L206 Difference]: Finished difference. Result has 262 places, 139 transitions [2020-02-10 23:29:32,522 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=3013, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3667, PETRI_PLACES=262, PETRI_TRANSITIONS=139} [2020-02-10 23:29:32,522 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 262 places, 139 transitions [2020-02-10 23:29:36,527 INFO L129 PetriNetUnfolder]: 0/3114 cut-off events. [2020-02-10 23:29:36,527 INFO L130 PetriNetUnfolder]: For 104037/104395 co-relation queries the response was YES. [2020-02-10 23:29:36,587 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21015 conditions, 3114 events. 0/3114 cut-off events. For 104037/104395 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 48932 event pairs. 39/2847 useless extension candidates. Maximal degree in co-relation 20890. Up to 351 conditions per place. [2020-02-10 23:29:36,587 INFO L82 GeneralOperation]: Start removeDead. Operand has 262 places, 139 transitions [2020-02-10 23:29:36,684 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 139 transitions [2020-02-10 23:29:36,684 INFO L479 AbstractCegarLoop]: Abstraction has has 261 places, 139 transitions [2020-02-10 23:29:36,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:29:38,157 INFO L129 PetriNetUnfolder]: 0/2769 cut-off events. [2020-02-10 23:29:38,158 INFO L130 PetriNetUnfolder]: For 103255/103566 co-relation queries the response was YES. [2020-02-10 23:29:38,158 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:38,158 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] [2020-02-10 23:29:38,158 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:38,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:38,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1051916972, now seen corresponding path program 17 times [2020-02-10 23:29:38,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:38,159 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065916396] [2020-02-10 23:29:38,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:38,512 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 23:29:38,513 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065916396] [2020-02-10 23:29:38,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:38,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:29:38,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183378518] [2020-02-10 23:29:38,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:29:38,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:38,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:29:38,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:29:38,515 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:29:38,516 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 139 transitions. Second operand 9 states. [2020-02-10 23:29:38,516 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:38,516 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:29:38,516 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:47,355 INFO L129 PetriNetUnfolder]: 626/4729 cut-off events. [2020-02-10 23:29:47,355 INFO L130 PetriNetUnfolder]: For 177274/177649 co-relation queries the response was YES. [2020-02-10 23:29:47,424 INFO L76 FinitePrefix]: Finished finitePrefix Result has 34954 conditions, 4729 events. 626/4729 cut-off events. For 177274/177649 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 67244 event pairs. 4/4621 useless extension candidates. Maximal degree in co-relation 34828. Up to 855 conditions per place. [2020-02-10 23:29:47,533 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 137 selfloop transitions, 56 changer transitions 0/207 dead transitions. [2020-02-10 23:29:47,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:29:47,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:29:47,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:29:47,535 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:29:47,535 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:29:47,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:29:47,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:47,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:29:47,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:29:47,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:29:47,538 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:29:47,538 INFO L178 Difference]: Start difference. First operand has 261 places, 139 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:29:47,540 INFO L206 Difference]: Finished difference. Result has 274 places, 151 transitions [2020-02-10 23:29:47,540 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=3667, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4292, PETRI_PLACES=274, PETRI_TRANSITIONS=151} [2020-02-10 23:29:47,540 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 274 places, 151 transitions [2020-02-10 23:29:51,740 INFO L129 PetriNetUnfolder]: 0/3113 cut-off events. [2020-02-10 23:29:51,740 INFO L130 PetriNetUnfolder]: For 116243/116590 co-relation queries the response was YES. [2020-02-10 23:29:51,793 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21865 conditions, 3113 events. 0/3113 cut-off events. For 116243/116590 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 49040 event pairs. 17/2819 useless extension candidates. Maximal degree in co-relation 21734. Up to 351 conditions per place. [2020-02-10 23:29:51,793 INFO L82 GeneralOperation]: Start removeDead. Operand has 274 places, 151 transitions [2020-02-10 23:29:51,897 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 274 places, 151 transitions [2020-02-10 23:29:51,897 INFO L479 AbstractCegarLoop]: Abstraction has has 274 places, 151 transitions [2020-02-10 23:29:51,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:29:53,220 INFO L129 PetriNetUnfolder]: 0/2769 cut-off events. [2020-02-10 23:29:53,221 INFO L130 PetriNetUnfolder]: For 116231/116584 co-relation queries the response was YES. [2020-02-10 23:29:53,221 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:53,221 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] [2020-02-10 23:29:53,221 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:53,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:53,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1536751684, now seen corresponding path program 18 times [2020-02-10 23:29:53,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:53,222 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868717587] [2020-02-10 23:29:53,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:53,541 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 23:29:53,542 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868717587] [2020-02-10 23:29:53,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:53,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:29:53,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207813436] [2020-02-10 23:29:53,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:29:53,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:53,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:29:53,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:29:53,544 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:29:53,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 151 transitions. Second operand 9 states. [2020-02-10 23:29:53,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:53,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:29:53,545 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:04,141 INFO L129 PetriNetUnfolder]: 674/5641 cut-off events. [2020-02-10 23:30:04,141 INFO L130 PetriNetUnfolder]: For 243527/245019 co-relation queries the response was YES. [2020-02-10 23:30:04,231 INFO L76 FinitePrefix]: Finished finitePrefix Result has 44039 conditions, 5641 events. 674/5641 cut-off events. For 243527/245019 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 84516 event pairs. 2/5488 useless extension candidates. Maximal degree in co-relation 43907. Up to 1550 conditions per place. [2020-02-10 23:30:04,371 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 215 selfloop transitions, 55 changer transitions 1/285 dead transitions. [2020-02-10 23:30:04,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:30:04,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:30:04,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:30:04,372 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:30:04,372 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:30:04,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:30:04,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:04,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:30:04,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:30:04,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:30:04,374 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:30:04,374 INFO L178 Difference]: Start difference. First operand has 274 places, 151 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:30:04,377 INFO L206 Difference]: Finished difference. Result has 289 places, 175 transitions [2020-02-10 23:30:04,377 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=4292, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5333, PETRI_PLACES=289, PETRI_TRANSITIONS=175} [2020-02-10 23:30:04,378 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 289 places, 175 transitions [2020-02-10 23:30:11,618 INFO L129 PetriNetUnfolder]: 0/4017 cut-off events. [2020-02-10 23:30:11,618 INFO L130 PetriNetUnfolder]: For 179864/181193 co-relation queries the response was YES. [2020-02-10 23:30:11,677 INFO L76 FinitePrefix]: Finished finitePrefix Result has 29279 conditions, 4017 events. 0/4017 cut-off events. For 179864/181193 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 65832 event pairs. 25/3660 useless extension candidates. Maximal degree in co-relation 29140. Up to 452 conditions per place. [2020-02-10 23:30:11,677 INFO L82 GeneralOperation]: Start removeDead. Operand has 289 places, 175 transitions [2020-02-10 23:30:11,775 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 289 places, 175 transitions [2020-02-10 23:30:11,776 INFO L479 AbstractCegarLoop]: Abstraction has has 289 places, 175 transitions [2020-02-10 23:30:11,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:30:13,914 INFO L129 PetriNetUnfolder]: 0/3573 cut-off events. [2020-02-10 23:30:13,914 INFO L130 PetriNetUnfolder]: For 179759/181047 co-relation queries the response was YES. [2020-02-10 23:30:13,914 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:30:13,915 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] [2020-02-10 23:30:13,915 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:30:13,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:30:13,915 INFO L82 PathProgramCache]: Analyzing trace with hash -829485626, now seen corresponding path program 19 times [2020-02-10 23:30:13,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:30:13,915 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527658786] [2020-02-10 23:30:13,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:30:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:30:14,238 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 23:30:14,239 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527658786] [2020-02-10 23:30:14,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:30:14,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:30:14,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035109209] [2020-02-10 23:30:14,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:30:14,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:30:14,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:30:14,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:30:14,241 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:30:14,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 175 transitions. Second operand 9 states. [2020-02-10 23:30:14,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:30:14,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:30:14,242 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:27,621 INFO L129 PetriNetUnfolder]: 668/5916 cut-off events. [2020-02-10 23:30:27,622 INFO L130 PetriNetUnfolder]: For 293486/296371 co-relation queries the response was YES. [2020-02-10 23:30:27,722 INFO L76 FinitePrefix]: Finished finitePrefix Result has 48360 conditions, 5916 events. 668/5916 cut-off events. For 293486/296371 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 89858 event pairs. 9/5759 useless extension candidates. Maximal degree in co-relation 48220. Up to 1550 conditions per place. [2020-02-10 23:30:27,885 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 231 selfloop transitions, 63 changer transitions 3/311 dead transitions. [2020-02-10 23:30:27,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:30:27,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:30:27,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:30:27,887 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:30:27,887 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:30:27,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:30:27,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:27,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:30:27,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:30:27,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:30:27,889 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:30:27,889 INFO L178 Difference]: Start difference. First operand has 289 places, 175 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:30:27,891 INFO L206 Difference]: Finished difference. Result has 303 places, 196 transitions [2020-02-10 23:30:27,891 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=5333, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6260, PETRI_PLACES=303, PETRI_TRANSITIONS=196} [2020-02-10 23:30:27,892 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 303 places, 196 transitions [2020-02-10 23:30:35,817 INFO L129 PetriNetUnfolder]: 0/4409 cut-off events. [2020-02-10 23:30:35,817 INFO L130 PetriNetUnfolder]: For 208649/209569 co-relation queries the response was YES. [2020-02-10 23:30:35,886 INFO L76 FinitePrefix]: Finished finitePrefix Result has 33135 conditions, 4409 events. 0/4409 cut-off events. For 208649/209569 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 73392 event pairs. 29/4042 useless extension candidates. Maximal degree in co-relation 32989. Up to 492 conditions per place. [2020-02-10 23:30:35,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 303 places, 196 transitions [2020-02-10 23:30:35,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 302 places, 196 transitions [2020-02-10 23:30:35,994 INFO L479 AbstractCegarLoop]: Abstraction has has 302 places, 196 transitions [2020-02-10 23:30:35,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:30:38,615 INFO L129 PetriNetUnfolder]: 0/3925 cut-off events. [2020-02-10 23:30:38,615 INFO L130 PetriNetUnfolder]: For 212060/213072 co-relation queries the response was YES. [2020-02-10 23:30:38,615 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:30:38,615 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] [2020-02-10 23:30:38,615 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:30:38,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:30:38,616 INFO L82 PathProgramCache]: Analyzing trace with hash -459739322, now seen corresponding path program 20 times [2020-02-10 23:30:38,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:30:38,616 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920464682] [2020-02-10 23:30:38,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:30:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:30:38,929 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 23:30:38,930 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920464682] [2020-02-10 23:30:38,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:30:38,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:30:38,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848878811] [2020-02-10 23:30:38,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:30:38,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:30:38,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:30:38,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:30:38,932 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:30:38,932 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 196 transitions. Second operand 9 states. [2020-02-10 23:30:38,932 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:30:38,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:30:38,933 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:53,315 INFO L129 PetriNetUnfolder]: 668/5992 cut-off events. [2020-02-10 23:30:53,315 INFO L130 PetriNetUnfolder]: For 316833/319661 co-relation queries the response was YES. [2020-02-10 23:30:53,427 INFO L76 FinitePrefix]: Finished finitePrefix Result has 50163 conditions, 5992 events. 668/5992 cut-off events. For 316833/319661 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 91138 event pairs. 4/5841 useless extension candidates. Maximal degree in co-relation 50016. Up to 1158 conditions per place. [2020-02-10 23:30:53,587 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 228 selfloop transitions, 72 changer transitions 1/315 dead transitions. [2020-02-10 23:30:53,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:30:53,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:30:53,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:30:53,589 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:30:53,589 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:30:53,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:30:53,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:53,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:30:53,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:30:53,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:30:53,591 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:30:53,591 INFO L178 Difference]: Start difference. First operand has 302 places, 196 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:30:53,595 INFO L206 Difference]: Finished difference. Result has 314 places, 208 transitions [2020-02-10 23:30:53,595 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=6260, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6854, PETRI_PLACES=314, PETRI_TRANSITIONS=208} [2020-02-10 23:30:53,595 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 314 places, 208 transitions [2020-02-10 23:31:00,509 INFO L129 PetriNetUnfolder]: 0/4400 cut-off events. [2020-02-10 23:31:00,509 INFO L130 PetriNetUnfolder]: For 227686/228711 co-relation queries the response was YES. [2020-02-10 23:31:00,581 INFO L76 FinitePrefix]: Finished finitePrefix Result has 34158 conditions, 4400 events. 0/4400 cut-off events. For 227686/228711 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 73267 event pairs. 29/4065 useless extension candidates. Maximal degree in co-relation 34007. Up to 491 conditions per place. [2020-02-10 23:31:00,581 INFO L82 GeneralOperation]: Start removeDead. Operand has 314 places, 208 transitions [2020-02-10 23:31:00,692 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 313 places, 208 transitions [2020-02-10 23:31:00,693 INFO L479 AbstractCegarLoop]: Abstraction has has 313 places, 208 transitions [2020-02-10 23:31:00,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:31:03,253 INFO L129 PetriNetUnfolder]: 0/3917 cut-off events. [2020-02-10 23:31:03,253 INFO L130 PetriNetUnfolder]: For 227197/228219 co-relation queries the response was YES. [2020-02-10 23:31:03,253 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:31:03,253 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] [2020-02-10 23:31:03,254 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:31:03,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:31:03,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1744146788, now seen corresponding path program 21 times [2020-02-10 23:31:03,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:31:03,254 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530985870] [2020-02-10 23:31:03,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:31:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:31:03,535 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 23:31:03,535 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530985870] [2020-02-10 23:31:03,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:31:03,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:31:03,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130557523] [2020-02-10 23:31:03,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:31:03,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:31:03,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:31:03,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:31:03,536 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:31:03,537 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 208 transitions. Second operand 9 states. [2020-02-10 23:31:03,537 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:31:03,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:31:03,537 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:31:17,689 INFO L129 PetriNetUnfolder]: 668/6002 cut-off events. [2020-02-10 23:31:17,689 INFO L130 PetriNetUnfolder]: For 336290/339198 co-relation queries the response was YES. [2020-02-10 23:31:17,796 INFO L76 FinitePrefix]: Finished finitePrefix Result has 51565 conditions, 6002 events. 668/6002 cut-off events. For 336290/339198 co-relation queries the response was YES. Maximal size of possible extension queue 774. Compared 91333 event pairs. 9/5860 useless extension candidates. Maximal degree in co-relation 51413. Up to 1158 conditions per place. [2020-02-10 23:31:18,127 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 206 selfloop transitions, 86 changer transitions 1/307 dead transitions. [2020-02-10 23:31:18,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:31:18,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:31:18,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:31:18,128 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:31:18,128 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:31:18,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:31:18,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:31:18,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:31:18,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:31:18,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:31:18,130 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:31:18,130 INFO L178 Difference]: Start difference. First operand has 313 places, 208 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:31:18,133 INFO L206 Difference]: Finished difference. Result has 326 places, 221 transitions [2020-02-10 23:31:18,133 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=6854, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7699, PETRI_PLACES=326, PETRI_TRANSITIONS=221} [2020-02-10 23:31:18,133 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 326 places, 221 transitions [2020-02-10 23:31:27,004 INFO L129 PetriNetUnfolder]: 0/4394 cut-off events. [2020-02-10 23:31:27,004 INFO L130 PetriNetUnfolder]: For 248643/249700 co-relation queries the response was YES. [2020-02-10 23:31:27,077 INFO L76 FinitePrefix]: Finished finitePrefix Result has 35283 conditions, 4394 events. 0/4394 cut-off events. For 248643/249700 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 73111 event pairs. 40/4055 useless extension candidates. Maximal degree in co-relation 35126. Up to 490 conditions per place. [2020-02-10 23:31:27,077 INFO L82 GeneralOperation]: Start removeDead. Operand has 326 places, 221 transitions [2020-02-10 23:31:27,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 221 transitions [2020-02-10 23:31:27,190 INFO L479 AbstractCegarLoop]: Abstraction has has 325 places, 221 transitions [2020-02-10 23:31:27,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:31:29,877 INFO L129 PetriNetUnfolder]: 0/3912 cut-off events. [2020-02-10 23:31:29,877 INFO L130 PetriNetUnfolder]: For 248304/249361 co-relation queries the response was YES. [2020-02-10 23:31:29,877 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:31:29,877 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] [2020-02-10 23:31:29,877 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:31:29,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:31:29,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1738535972, now seen corresponding path program 22 times [2020-02-10 23:31:29,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:31:29,878 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15465168] [2020-02-10 23:31:29,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:31:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:31:30,184 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 23:31:30,184 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15465168] [2020-02-10 23:31:30,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:31:30,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:31:30,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335882025] [2020-02-10 23:31:30,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:31:30,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:31:30,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:31:30,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:31:30,186 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:31:30,186 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 221 transitions. Second operand 9 states. [2020-02-10 23:31:30,186 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:31:30,186 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:31:30,186 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:31:45,568 INFO L129 PetriNetUnfolder]: 673/6182 cut-off events. [2020-02-10 23:31:45,569 INFO L130 PetriNetUnfolder]: For 374680/377780 co-relation queries the response was YES. [2020-02-10 23:31:45,682 INFO L76 FinitePrefix]: Finished finitePrefix Result has 55095 conditions, 6182 events. 673/6182 cut-off events. For 374680/377780 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 94524 event pairs. 1/6021 useless extension candidates. Maximal degree in co-relation 54937. Up to 1182 conditions per place. [2020-02-10 23:31:45,858 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 164 selfloop transitions, 118 changer transitions 0/296 dead transitions. [2020-02-10 23:31:45,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:31:45,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:31:45,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:31:45,859 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:31:45,859 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:31:45,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:31:45,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:31:45,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:31:45,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:31:45,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:31:45,862 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:31:45,862 INFO L178 Difference]: Start difference. First operand has 325 places, 221 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:31:45,865 INFO L206 Difference]: Finished difference. Result has 339 places, 240 transitions [2020-02-10 23:31:45,866 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=7699, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8782, PETRI_PLACES=339, PETRI_TRANSITIONS=240} [2020-02-10 23:31:45,867 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 339 places, 240 transitions [2020-02-10 23:31:54,655 INFO L129 PetriNetUnfolder]: 0/4664 cut-off events. [2020-02-10 23:31:54,655 INFO L130 PetriNetUnfolder]: For 288261/289343 co-relation queries the response was YES. [2020-02-10 23:31:54,738 INFO L76 FinitePrefix]: Finished finitePrefix Result has 38563 conditions, 4664 events. 0/4664 cut-off events. For 288261/289343 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 78322 event pairs. 42/4322 useless extension candidates. Maximal degree in co-relation 38399. Up to 518 conditions per place. [2020-02-10 23:31:54,738 INFO L82 GeneralOperation]: Start removeDead. Operand has 339 places, 240 transitions [2020-02-10 23:31:54,865 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 339 places, 240 transitions [2020-02-10 23:31:54,866 INFO L479 AbstractCegarLoop]: Abstraction has has 339 places, 240 transitions [2020-02-10 23:31:54,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:31:58,092 INFO L129 PetriNetUnfolder]: 0/4155 cut-off events. [2020-02-10 23:31:58,093 INFO L130 PetriNetUnfolder]: For 288384/289503 co-relation queries the response was YES. [2020-02-10 23:31:58,093 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:31:58,093 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] [2020-02-10 23:31:58,093 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:31:58,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:31:58,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1273890348, now seen corresponding path program 23 times [2020-02-10 23:31:58,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:31:58,094 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850135565] [2020-02-10 23:31:58,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:31:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:31:58,473 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 23:31:58,474 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850135565] [2020-02-10 23:31:58,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:31:58,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:31:58,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344294295] [2020-02-10 23:31:58,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:31:58,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:31:58,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:31:58,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:31:58,476 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:31:58,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 240 transitions. Second operand 9 states. [2020-02-10 23:31:58,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:31:58,476 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:31:58,476 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:32:15,252 INFO L129 PetriNetUnfolder]: 673/6181 cut-off events. [2020-02-10 23:32:15,253 INFO L130 PetriNetUnfolder]: For 408717/411817 co-relation queries the response was YES. [2020-02-10 23:32:15,371 INFO L76 FinitePrefix]: Finished finitePrefix Result has 56707 conditions, 6181 events. 673/6181 cut-off events. For 408717/411817 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 94577 event pairs. 1/6029 useless extension candidates. Maximal degree in co-relation 56542. Up to 1182 conditions per place. [2020-02-10 23:32:15,551 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 165 selfloop transitions, 114 changer transitions 3/296 dead transitions. [2020-02-10 23:32:15,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:32:15,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:32:15,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:32:15,552 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:32:15,552 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:32:15,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:32:15,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:32:15,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:32:15,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:32:15,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:32:15,554 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:32:15,554 INFO L178 Difference]: Start difference. First operand has 339 places, 240 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:32:15,556 INFO L206 Difference]: Finished difference. Result has 349 places, 238 transitions [2020-02-10 23:32:15,557 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=8782, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8950, PETRI_PLACES=349, PETRI_TRANSITIONS=238} [2020-02-10 23:32:15,557 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 349 places, 238 transitions [2020-02-10 23:32:24,247 INFO L129 PetriNetUnfolder]: 0/4652 cut-off events. [2020-02-10 23:32:24,247 INFO L130 PetriNetUnfolder]: For 306855/307973 co-relation queries the response was YES. [2020-02-10 23:32:24,332 INFO L76 FinitePrefix]: Finished finitePrefix Result has 39442 conditions, 4652 events. 0/4652 cut-off events. For 306855/307973 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 78124 event pairs. 55/4325 useless extension candidates. Maximal degree in co-relation 39275. Up to 516 conditions per place. [2020-02-10 23:32:24,332 INFO L82 GeneralOperation]: Start removeDead. Operand has 349 places, 238 transitions [2020-02-10 23:32:24,460 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 347 places, 238 transitions [2020-02-10 23:32:24,460 INFO L479 AbstractCegarLoop]: Abstraction has has 347 places, 238 transitions [2020-02-10 23:32:24,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:32:27,639 INFO L129 PetriNetUnfolder]: 0/4144 cut-off events. [2020-02-10 23:32:27,639 INFO L130 PetriNetUnfolder]: For 307131/308248 co-relation queries the response was YES. [2020-02-10 23:32:27,639 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:32:27,639 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] [2020-02-10 23:32:27,639 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:32:27,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:32:27,639 INFO L82 PathProgramCache]: Analyzing trace with hash -15242926, now seen corresponding path program 24 times [2020-02-10 23:32:27,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:32:27,640 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851246148] [2020-02-10 23:32:27,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:32:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:32:27,924 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 23:32:27,925 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851246148] [2020-02-10 23:32:27,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:32:27,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:32:27,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971968435] [2020-02-10 23:32:27,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:32:27,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:32:27,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:32:27,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:32:27,926 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:32:27,926 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 238 transitions. Second operand 9 states. [2020-02-10 23:32:27,926 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:32:27,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:32:27,927 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:32:45,183 INFO L129 PetriNetUnfolder]: 673/6289 cut-off events. [2020-02-10 23:32:45,184 INFO L130 PetriNetUnfolder]: For 435463/438371 co-relation queries the response was YES. [2020-02-10 23:32:45,310 INFO L76 FinitePrefix]: Finished finitePrefix Result has 58100 conditions, 6289 events. 673/6289 cut-off events. For 435463/438371 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 96958 event pairs. 9/6146 useless extension candidates. Maximal degree in co-relation 57932. Up to 1201 conditions per place. [2020-02-10 23:32:45,500 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 229 selfloop transitions, 84 changer transitions 1/328 dead transitions. [2020-02-10 23:32:45,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:32:45,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:32:45,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:32:45,501 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:32:45,502 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:32:45,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:32:45,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:32:45,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:32:45,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:32:45,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:32:45,504 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:32:45,504 INFO L178 Difference]: Start difference. First operand has 347 places, 238 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:32:45,507 INFO L206 Difference]: Finished difference. Result has 359 places, 241 transitions [2020-02-10 23:32:45,507 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=8950, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9242, PETRI_PLACES=359, PETRI_TRANSITIONS=241} [2020-02-10 23:32:45,507 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 359 places, 241 transitions [2020-02-10 23:32:55,167 INFO L129 PetriNetUnfolder]: 0/4648 cut-off events. [2020-02-10 23:32:55,167 INFO L130 PetriNetUnfolder]: For 326213/327368 co-relation queries the response was YES. [2020-02-10 23:32:55,258 INFO L76 FinitePrefix]: Finished finitePrefix Result has 40436 conditions, 4648 events. 0/4648 cut-off events. For 326213/327368 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 77999 event pairs. 52/4323 useless extension candidates. Maximal degree in co-relation 40264. Up to 515 conditions per place. [2020-02-10 23:32:55,258 INFO L82 GeneralOperation]: Start removeDead. Operand has 359 places, 241 transitions [2020-02-10 23:32:55,395 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 358 places, 241 transitions [2020-02-10 23:32:55,395 INFO L479 AbstractCegarLoop]: Abstraction has has 358 places, 241 transitions [2020-02-10 23:32:55,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:32:58,705 INFO L129 PetriNetUnfolder]: 0/4141 cut-off events. [2020-02-10 23:32:58,705 INFO L130 PetriNetUnfolder]: For 326080/327237 co-relation queries the response was YES. [2020-02-10 23:32:58,705 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:32:58,705 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] [2020-02-10 23:32:58,706 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:32:58,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:32:58,706 INFO L82 PathProgramCache]: Analyzing trace with hash 744259764, now seen corresponding path program 25 times [2020-02-10 23:32:58,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:32:58,706 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983420882] [2020-02-10 23:32:58,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:32:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:32:59,029 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 23:32:59,029 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983420882] [2020-02-10 23:32:59,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:32:59,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:32:59,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279460710] [2020-02-10 23:32:59,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:32:59,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:32:59,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:32:59,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:32:59,031 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:32:59,032 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 241 transitions. Second operand 9 states. [2020-02-10 23:32:59,032 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:32:59,032 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:32:59,032 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:33:16,491 INFO L129 PetriNetUnfolder]: 664/6353 cut-off events. [2020-02-10 23:33:16,491 INFO L130 PetriNetUnfolder]: For 462404/465232 co-relation queries the response was YES. [2020-02-10 23:33:16,620 INFO L76 FinitePrefix]: Finished finitePrefix Result has 59896 conditions, 6353 events. 664/6353 cut-off events. For 462404/465232 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 98343 event pairs. 4/6201 useless extension candidates. Maximal degree in co-relation 59723. Up to 1201 conditions per place. [2020-02-10 23:33:16,819 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 248 selfloop transitions, 85 changer transitions 2/349 dead transitions. [2020-02-10 23:33:16,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:33:16,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:33:16,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:33:16,821 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:33:16,821 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:33:16,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:33:16,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:33:16,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:33:16,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:33:16,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:33:16,823 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:33:16,823 INFO L178 Difference]: Start difference. First operand has 358 places, 241 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:33:16,826 INFO L206 Difference]: Finished difference. Result has 371 places, 257 transitions [2020-02-10 23:33:16,827 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=9242, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10030, PETRI_PLACES=371, PETRI_TRANSITIONS=257} [2020-02-10 23:33:16,827 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 371 places, 257 transitions [2020-02-10 23:33:27,390 INFO L129 PetriNetUnfolder]: 0/4729 cut-off events. [2020-02-10 23:33:27,390 INFO L130 PetriNetUnfolder]: For 353960/355179 co-relation queries the response was YES. [2020-02-10 23:33:27,479 INFO L76 FinitePrefix]: Finished finitePrefix Result has 42307 conditions, 4729 events. 0/4729 cut-off events. For 353960/355179 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 79551 event pairs. 53/4404 useless extension candidates. Maximal degree in co-relation 42129. Up to 525 conditions per place. [2020-02-10 23:33:27,480 INFO L82 GeneralOperation]: Start removeDead. Operand has 371 places, 257 transitions [2020-02-10 23:33:27,625 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 370 places, 257 transitions [2020-02-10 23:33:27,625 INFO L479 AbstractCegarLoop]: Abstraction has has 370 places, 257 transitions [2020-02-10 23:33:27,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:33:31,073 INFO L129 PetriNetUnfolder]: 0/4213 cut-off events. [2020-02-10 23:33:31,073 INFO L130 PetriNetUnfolder]: For 353908/355122 co-relation queries the response was YES. [2020-02-10 23:33:31,073 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:33:31,073 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] [2020-02-10 23:33:31,073 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:33:31,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:33:31,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1755825804, now seen corresponding path program 26 times [2020-02-10 23:33:31,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:33:31,074 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065645378] [2020-02-10 23:33:31,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:33:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:33:31,365 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 23:33:31,366 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065645378] [2020-02-10 23:33:31,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:33:31,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:33:31,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136836987] [2020-02-10 23:33:31,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:33:31,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:33:31,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:33:31,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:33:31,367 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:33:31,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 257 transitions. Second operand 9 states. [2020-02-10 23:33:31,368 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:33:31,368 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:33:31,368 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:33:50,250 INFO L129 PetriNetUnfolder]: 656/6334 cut-off events. [2020-02-10 23:33:50,251 INFO L130 PetriNetUnfolder]: For 496716/499786 co-relation queries the response was YES. [2020-02-10 23:33:50,390 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61825 conditions, 6334 events. 656/6334 cut-off events. For 496716/499786 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 98421 event pairs. 11/6173 useless extension candidates. Maximal degree in co-relation 61646. Up to 1650 conditions per place. [2020-02-10 23:33:50,597 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 275 selfloop transitions, 78 changer transitions 2/369 dead transitions. [2020-02-10 23:33:50,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:33:50,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:33:50,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:33:50,598 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:33:50,598 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:33:50,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:33:50,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:33:50,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:33:50,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:33:50,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:33:50,600 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:33:50,600 INFO L178 Difference]: Start difference. First operand has 370 places, 257 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:33:50,604 INFO L206 Difference]: Finished difference. Result has 383 places, 265 transitions [2020-02-10 23:33:50,605 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=10030, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10559, PETRI_PLACES=383, PETRI_TRANSITIONS=265} [2020-02-10 23:33:50,605 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 383 places, 265 transitions [2020-02-10 23:34:01,956 INFO L129 PetriNetUnfolder]: 0/4819 cut-off events. [2020-02-10 23:34:01,956 INFO L130 PetriNetUnfolder]: For 379051/380272 co-relation queries the response was YES. [2020-02-10 23:34:02,050 INFO L76 FinitePrefix]: Finished finitePrefix Result has 44121 conditions, 4819 events. 0/4819 cut-off events. For 379051/380272 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 81310 event pairs. 47/4487 useless extension candidates. Maximal degree in co-relation 43937. Up to 533 conditions per place. [2020-02-10 23:34:02,050 INFO L82 GeneralOperation]: Start removeDead. Operand has 383 places, 265 transitions [2020-02-10 23:34:02,196 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 382 places, 265 transitions [2020-02-10 23:34:02,196 INFO L479 AbstractCegarLoop]: Abstraction has has 382 places, 265 transitions [2020-02-10 23:34:02,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:34:05,954 INFO L129 PetriNetUnfolder]: 0/4295 cut-off events. [2020-02-10 23:34:05,954 INFO L130 PetriNetUnfolder]: For 380947/382204 co-relation queries the response was YES. [2020-02-10 23:34:05,954 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:34:05,954 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] [2020-02-10 23:34:05,954 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:34:05,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:34:05,955 INFO L82 PathProgramCache]: Analyzing trace with hash 952725780, now seen corresponding path program 27 times [2020-02-10 23:34:05,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:34:05,955 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766684345] [2020-02-10 23:34:05,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:34:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:34:06,247 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 23:34:06,247 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766684345] [2020-02-10 23:34:06,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:34:06,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:34:06,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986733763] [2020-02-10 23:34:06,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:34:06,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:34:06,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:34:06,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:34:06,249 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:34:06,249 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 265 transitions. Second operand 9 states. [2020-02-10 23:34:06,249 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:34:06,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:34:06,249 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:34:25,451 INFO L129 PetriNetUnfolder]: 656/6333 cut-off events. [2020-02-10 23:34:25,451 INFO L130 PetriNetUnfolder]: For 515823/518767 co-relation queries the response was YES. [2020-02-10 23:34:25,590 INFO L76 FinitePrefix]: Finished finitePrefix Result has 63216 conditions, 6333 events. 656/6333 cut-off events. For 515823/518767 co-relation queries the response was YES. Maximal size of possible extension queue 822. Compared 98097 event pairs. 1/6177 useless extension candidates. Maximal degree in co-relation 63031. Up to 1365 conditions per place. [2020-02-10 23:34:25,800 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 214 selfloop transitions, 96 changer transitions 0/324 dead transitions. [2020-02-10 23:34:25,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:34:25,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:34:25,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:34:25,802 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:34:25,802 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:34:25,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:34:25,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:34:25,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:34:25,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:34:25,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:34:25,804 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:34:25,804 INFO L178 Difference]: Start difference. First operand has 382 places, 265 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:34:25,809 INFO L206 Difference]: Finished difference. Result has 395 places, 277 transitions [2020-02-10 23:34:25,810 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=10559, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11351, PETRI_PLACES=395, PETRI_TRANSITIONS=277} [2020-02-10 23:34:25,810 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 395 places, 277 transitions [2020-02-10 23:34:37,089 INFO L129 PetriNetUnfolder]: 0/4818 cut-off events. [2020-02-10 23:34:37,089 INFO L130 PetriNetUnfolder]: For 414068/415445 co-relation queries the response was YES. [2020-02-10 23:34:37,186 INFO L76 FinitePrefix]: Finished finitePrefix Result has 45436 conditions, 4818 events. 0/4818 cut-off events. For 414068/415445 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 81222 event pairs. 74/4502 useless extension candidates. Maximal degree in co-relation 45246. Up to 533 conditions per place. [2020-02-10 23:34:37,187 INFO L82 GeneralOperation]: Start removeDead. Operand has 395 places, 277 transitions [2020-02-10 23:34:37,334 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 395 places, 277 transitions [2020-02-10 23:34:37,334 INFO L479 AbstractCegarLoop]: Abstraction has has 395 places, 277 transitions [2020-02-10 23:34:37,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:34:41,118 INFO L129 PetriNetUnfolder]: 0/4295 cut-off events. [2020-02-10 23:34:41,118 INFO L130 PetriNetUnfolder]: For 413180/414526 co-relation queries the response was YES. [2020-02-10 23:34:41,118 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:34:41,118 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] [2020-02-10 23:34:41,119 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:34:41,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:34:41,119 INFO L82 PathProgramCache]: Analyzing trace with hash -233005028, now seen corresponding path program 28 times [2020-02-10 23:34:41,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:34:41,119 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763668717] [2020-02-10 23:34:41,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:34:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:34:41,432 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 23:34:41,433 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763668717] [2020-02-10 23:34:41,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:34:41,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:34:41,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307616661] [2020-02-10 23:34:41,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:34:41,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:34:41,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:34:41,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:34:41,434 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:34:41,435 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 277 transitions. Second operand 9 states. [2020-02-10 23:34:41,435 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:34:41,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:34:41,435 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:35:05,033 INFO L129 PetriNetUnfolder]: 656/6792 cut-off events. [2020-02-10 23:35:05,034 INFO L130 PetriNetUnfolder]: For 565255/568199 co-relation queries the response was YES. [2020-02-10 23:35:05,223 INFO L76 FinitePrefix]: Finished finitePrefix Result has 65750 conditions, 6792 events. 656/6792 cut-off events. For 565255/568199 co-relation queries the response was YES. Maximal size of possible extension queue 906. Compared 107485 event pairs. 8/6678 useless extension candidates. Maximal degree in co-relation 65559. Up to 1794 conditions per place. [2020-02-10 23:35:05,469 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 299 selfloop transitions, 100 changer transitions 3/416 dead transitions. [2020-02-10 23:35:05,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:35:05,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:35:05,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:35:05,470 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:35:05,470 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:35:05,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:35:05,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:35:05,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:35:05,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:35:05,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:35:05,473 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:35:05,473 INFO L178 Difference]: Start difference. First operand has 395 places, 277 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:35:05,478 INFO L206 Difference]: Finished difference. Result has 409 places, 326 transitions [2020-02-10 23:35:05,478 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=11351, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14221, PETRI_PLACES=409, PETRI_TRANSITIONS=326} [2020-02-10 23:35:05,478 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 409 places, 326 transitions [2020-02-10 23:35:17,688 INFO L129 PetriNetUnfolder]: 0/4814 cut-off events. [2020-02-10 23:35:17,688 INFO L130 PetriNetUnfolder]: For 444883/446414 co-relation queries the response was YES. [2020-02-10 23:35:17,793 INFO L76 FinitePrefix]: Finished finitePrefix Result has 46479 conditions, 4814 events. 0/4814 cut-off events. For 444883/446414 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 81204 event pairs. 72/4538 useless extension candidates. Maximal degree in co-relation 46282. Up to 533 conditions per place. [2020-02-10 23:35:17,793 INFO L82 GeneralOperation]: Start removeDead. Operand has 409 places, 326 transitions [2020-02-10 23:35:17,951 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 409 places, 326 transitions [2020-02-10 23:35:17,952 INFO L479 AbstractCegarLoop]: Abstraction has has 409 places, 326 transitions [2020-02-10 23:35:17,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:35:21,776 INFO L129 PetriNetUnfolder]: 0/4292 cut-off events. [2020-02-10 23:35:21,777 INFO L130 PetriNetUnfolder]: For 444552/446071 co-relation queries the response was YES. [2020-02-10 23:35:21,777 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:35:21,777 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] [2020-02-10 23:35:21,777 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:35:21,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:35:21,777 INFO L82 PathProgramCache]: Analyzing trace with hash 377980086, now seen corresponding path program 29 times [2020-02-10 23:35:21,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:35:21,778 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312628846] [2020-02-10 23:35:21,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:35:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:35:22,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:35:22,059 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312628846] [2020-02-10 23:35:22,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:35:22,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:35:22,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381813097] [2020-02-10 23:35:22,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:35:22,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:35:22,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:35:22,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:35:22,061 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:35:22,061 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 326 transitions. Second operand 9 states. [2020-02-10 23:35:22,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:35:22,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:35:22,061 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:35:42,962 INFO L129 PetriNetUnfolder]: 656/6339 cut-off events. [2020-02-10 23:35:42,962 INFO L130 PetriNetUnfolder]: For 589975/593539 co-relation queries the response was YES. [2020-02-10 23:35:43,109 INFO L76 FinitePrefix]: Finished finitePrefix Result has 66348 conditions, 6339 events. 656/6339 cut-off events. For 589975/593539 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 98192 event pairs. 1/6185 useless extension candidates. Maximal degree in co-relation 66150. Up to 1364 conditions per place. [2020-02-10 23:35:43,338 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 251 selfloop transitions, 111 changer transitions 3/379 dead transitions. [2020-02-10 23:35:43,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:35:43,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:35:43,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:35:43,340 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:35:43,340 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:35:43,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:35:43,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:35:43,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:35:43,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:35:43,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:35:43,341 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:35:43,342 INFO L178 Difference]: Start difference. First operand has 409 places, 326 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:35:43,346 INFO L206 Difference]: Finished difference. Result has 420 places, 325 transitions [2020-02-10 23:35:43,346 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14221, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14413, PETRI_PLACES=420, PETRI_TRANSITIONS=325} [2020-02-10 23:35:43,346 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 420 places, 325 transitions [2020-02-10 23:35:55,886 INFO L129 PetriNetUnfolder]: 0/4804 cut-off events. [2020-02-10 23:35:55,886 INFO L130 PetriNetUnfolder]: For 467440/468971 co-relation queries the response was YES. [2020-02-10 23:35:55,999 INFO L76 FinitePrefix]: Finished finitePrefix Result has 47432 conditions, 4804 events. 0/4804 cut-off events. For 467440/468971 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 81073 event pairs. 68/4524 useless extension candidates. Maximal degree in co-relation 47231. Up to 531 conditions per place. [2020-02-10 23:35:55,999 INFO L82 GeneralOperation]: Start removeDead. Operand has 420 places, 325 transitions [2020-02-10 23:35:56,160 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 418 places, 325 transitions [2020-02-10 23:35:56,160 INFO L479 AbstractCegarLoop]: Abstraction has has 418 places, 325 transitions [2020-02-10 23:35:56,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:36:00,146 INFO L129 PetriNetUnfolder]: 0/4283 cut-off events. [2020-02-10 23:36:00,147 INFO L130 PetriNetUnfolder]: For 467949/469489 co-relation queries the response was YES. [2020-02-10 23:36:00,147 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:36:00,147 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] [2020-02-10 23:36:00,147 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:36:00,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:36:00,147 INFO L82 PathProgramCache]: Analyzing trace with hash -887030582, now seen corresponding path program 30 times [2020-02-10 23:36:00,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:36:00,147 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754789505] [2020-02-10 23:36:00,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:36:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:36:00,492 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 23:36:00,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754789505] [2020-02-10 23:36:00,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:36:00,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:36:00,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552088865] [2020-02-10 23:36:00,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:36:00,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:36:00,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:36:00,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:36:00,495 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:36:00,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 325 transitions. Second operand 9 states. [2020-02-10 23:36:00,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:36:00,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:36:00,495 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:36:29,363 INFO L129 PetriNetUnfolder]: 616/7127 cut-off events. [2020-02-10 23:36:29,364 INFO L130 PetriNetUnfolder]: For 698657/702221 co-relation queries the response was YES. [2020-02-10 23:36:29,529 INFO L76 FinitePrefix]: Finished finitePrefix Result has 75016 conditions, 7127 events. 616/7127 cut-off events. For 698657/702221 co-relation queries the response was YES. Maximal size of possible extension queue 966. Compared 114953 event pairs. 1/6965 useless extension candidates. Maximal degree in co-relation 74814. Up to 1195 conditions per place. [2020-02-10 23:36:29,788 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 294 selfloop transitions, 142 changer transitions 2/452 dead transitions. [2020-02-10 23:36:29,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:36:29,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:36:29,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:36:29,789 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:36:29,789 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:36:29,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:36:29,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:36:29,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:36:29,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:36:29,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:36:29,792 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:36:29,792 INFO L178 Difference]: Start difference. First operand has 418 places, 325 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:36:29,799 INFO L206 Difference]: Finished difference. Result has 432 places, 358 transitions [2020-02-10 23:36:29,800 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14413, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16242, PETRI_PLACES=432, PETRI_TRANSITIONS=358} [2020-02-10 23:36:29,800 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 432 places, 358 transitions [2020-02-10 23:36:46,640 INFO L129 PetriNetUnfolder]: 0/5698 cut-off events. [2020-02-10 23:36:46,641 INFO L130 PetriNetUnfolder]: For 588248/589820 co-relation queries the response was YES. [2020-02-10 23:36:46,774 INFO L76 FinitePrefix]: Finished finitePrefix Result has 57693 conditions, 5698 events. 0/5698 cut-off events. For 588248/589820 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 99124 event pairs. 75/5410 useless extension candidates. Maximal degree in co-relation 57485. Up to 625 conditions per place. [2020-02-10 23:36:46,774 INFO L82 GeneralOperation]: Start removeDead. Operand has 432 places, 358 transitions [2020-02-10 23:36:46,966 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 431 places, 358 transitions [2020-02-10 23:36:46,967 INFO L479 AbstractCegarLoop]: Abstraction has has 431 places, 358 transitions [2020-02-10 23:36:46,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:36:52,519 INFO L129 PetriNetUnfolder]: 0/5083 cut-off events. [2020-02-10 23:36:52,519 INFO L130 PetriNetUnfolder]: For 592676/594523 co-relation queries the response was YES. [2020-02-10 23:36:52,519 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:36:52,520 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] [2020-02-10 23:36:52,520 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:36:52,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:36:52,520 INFO L82 PathProgramCache]: Analyzing trace with hash -755890388, now seen corresponding path program 31 times [2020-02-10 23:36:52,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:36:52,520 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041948271] [2020-02-10 23:36:52,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:36:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:36:52,805 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 23:36:52,806 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041948271] [2020-02-10 23:36:52,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:36:52,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:36:52,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242216231] [2020-02-10 23:36:52,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:36:52,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:36:52,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:36:52,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:36:52,808 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:36:52,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 358 transitions. Second operand 9 states. [2020-02-10 23:36:52,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:36:52,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:36:52,808 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:37:38,546 INFO L129 PetriNetUnfolder]: 586/8968 cut-off events. [2020-02-10 23:37:38,546 INFO L130 PetriNetUnfolder]: For 916933/920838 co-relation queries the response was YES. [2020-02-10 23:37:38,768 INFO L76 FinitePrefix]: Finished finitePrefix Result has 92754 conditions, 8968 events. 586/8968 cut-off events. For 916933/920838 co-relation queries the response was YES. Maximal size of possible extension queue 1257. Compared 154305 event pairs. 10/8789 useless extension candidates. Maximal degree in co-relation 92545. Up to 1838 conditions per place. [2020-02-10 23:37:39,102 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 434 selfloop transitions, 124 changer transitions 1/573 dead transitions. [2020-02-10 23:37:39,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:37:39,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:37:39,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:37:39,104 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:37:39,104 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:37:39,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:37:39,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:37:39,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:37:39,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:37:39,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:37:39,106 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:37:39,106 INFO L178 Difference]: Start difference. First operand has 431 places, 358 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:37:39,114 INFO L206 Difference]: Finished difference. Result has 446 places, 410 transitions [2020-02-10 23:37:39,115 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=16242, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19481, PETRI_PLACES=446, PETRI_TRANSITIONS=410} [2020-02-10 23:37:39,115 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 446 places, 410 transitions [2020-02-10 23:38:04,731 INFO L129 PetriNetUnfolder]: 0/7186 cut-off events. [2020-02-10 23:38:04,731 INFO L130 PetriNetUnfolder]: For 792464/795579 co-relation queries the response was YES. [2020-02-10 23:38:04,909 INFO L76 FinitePrefix]: Finished finitePrefix Result has 73978 conditions, 7186 events. 0/7186 cut-off events. For 792464/795579 co-relation queries the response was YES. Maximal size of possible extension queue 1082. Compared 129793 event pairs. 87/6826 useless extension candidates. Maximal degree in co-relation 73762. Up to 789 conditions per place. [2020-02-10 23:38:04,909 INFO L82 GeneralOperation]: Start removeDead. Operand has 446 places, 410 transitions [2020-02-10 23:38:05,165 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 446 places, 410 transitions [2020-02-10 23:38:05,166 INFO L479 AbstractCegarLoop]: Abstraction has has 446 places, 410 transitions [2020-02-10 23:38:05,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:38:12,998 INFO L129 PetriNetUnfolder]: 0/6408 cut-off events. [2020-02-10 23:38:12,998 INFO L130 PetriNetUnfolder]: For 786971/789393 co-relation queries the response was YES. [2020-02-10 23:38:12,998 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:38:12,998 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] [2020-02-10 23:38:12,998 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:38:12,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:38:12,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1365390500, now seen corresponding path program 32 times [2020-02-10 23:38:12,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:38:12,999 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394599746] [2020-02-10 23:38:12,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:38:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:38:13,316 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 23:38:13,316 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394599746] [2020-02-10 23:38:13,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:38:13,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:38:13,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438343762] [2020-02-10 23:38:13,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:38:13,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:38:13,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:38:13,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:38:13,318 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:38:13,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 410 transitions. Second operand 9 states. [2020-02-10 23:38:13,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:38:13,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:38:13,318 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:39:03,086 INFO L129 PetriNetUnfolder]: 575/8944 cut-off events. [2020-02-10 23:39:03,087 INFO L130 PetriNetUnfolder]: For 1025053/1029952 co-relation queries the response was YES. [2020-02-10 23:39:03,326 INFO L76 FinitePrefix]: Finished finitePrefix Result has 99069 conditions, 8944 events. 575/8944 cut-off events. For 1025053/1029952 co-relation queries the response was YES. Maximal size of possible extension queue 1254. Compared 153895 event pairs. 15/8745 useless extension candidates. Maximal degree in co-relation 98852. Up to 1554 conditions per place. [2020-02-10 23:39:03,680 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 431 selfloop transitions, 195 changer transitions 2/642 dead transitions. [2020-02-10 23:39:03,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:39:03,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:39:03,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:39:03,682 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:39:03,682 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:39:03,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:39:03,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:39:03,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:39:03,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:39:03,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:39:03,685 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:39:03,685 INFO L178 Difference]: Start difference. First operand has 446 places, 410 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:39:03,694 INFO L206 Difference]: Finished difference. Result has 460 places, 477 transitions [2020-02-10 23:39:03,694 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=19481, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24037, PETRI_PLACES=460, PETRI_TRANSITIONS=477} [2020-02-10 23:39:03,695 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 460 places, 477 transitions [2020-02-10 23:39:34,968 INFO L129 PetriNetUnfolder]: 0/7653 cut-off events. [2020-02-10 23:39:34,968 INFO L130 PetriNetUnfolder]: For 906222/908977 co-relation queries the response was YES. [2020-02-10 23:39:35,151 INFO L76 FinitePrefix]: Finished finitePrefix Result has 80904 conditions, 7653 events. 0/7653 cut-off events. For 906222/908977 co-relation queries the response was YES. Maximal size of possible extension queue 1155. Compared 139877 event pairs. 104/7367 useless extension candidates. Maximal degree in co-relation 80681. Up to 836 conditions per place. [2020-02-10 23:39:35,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 460 places, 477 transitions [2020-02-10 23:39:35,430 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 459 places, 477 transitions [2020-02-10 23:39:35,431 INFO L479 AbstractCegarLoop]: Abstraction has has 459 places, 477 transitions [2020-02-10 23:39:35,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:39:44,202 INFO L129 PetriNetUnfolder]: 0/6828 cut-off events. [2020-02-10 23:39:44,202 INFO L130 PetriNetUnfolder]: For 895112/897162 co-relation queries the response was YES. [2020-02-10 23:39:44,202 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:39:44,202 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] [2020-02-10 23:39:44,202 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:39:44,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:39:44,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1782496074, now seen corresponding path program 33 times [2020-02-10 23:39:44,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:39:44,203 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844130072] [2020-02-10 23:39:44,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:39:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:39:44,496 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 23:39:44,496 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844130072] [2020-02-10 23:39:44,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:39:44,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:39:44,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123600459] [2020-02-10 23:39:44,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:39:44,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:39:44,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:39:44,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:39:44,498 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:39:44,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 477 transitions. Second operand 9 states. [2020-02-10 23:39:44,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:39:44,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:39:44,498 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:41:06,674 INFO L129 PetriNetUnfolder]: 541/11743 cut-off events. [2020-02-10 23:41:06,674 INFO L130 PetriNetUnfolder]: For 1407893/1413117 co-relation queries the response was YES. [2020-02-10 23:41:07,048 INFO L76 FinitePrefix]: Finished finitePrefix Result has 130020 conditions, 11743 events. 541/11743 cut-off events. For 1407893/1413117 co-relation queries the response was YES. Maximal size of possible extension queue 1714. Compared 215425 event pairs. 15/11496 useless extension candidates. Maximal degree in co-relation 129796. Up to 2320 conditions per place. [2020-02-10 23:41:07,643 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 524 selfloop transitions, 198 changer transitions 0/736 dead transitions. [2020-02-10 23:41:07,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:41:07,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:41:07,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:41:07,645 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:41:07,645 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:41:07,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:41:07,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:41:07,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:41:07,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:41:07,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:41:07,646 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:41:07,646 INFO L178 Difference]: Start difference. First operand has 459 places, 477 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:41:07,654 INFO L206 Difference]: Finished difference. Result has 474 places, 563 transitions [2020-02-10 23:41:07,655 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=24037, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=29936, PETRI_PLACES=474, PETRI_TRANSITIONS=563} [2020-02-10 23:41:07,655 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 474 places, 563 transitions [2020-02-10 23:42:00,017 INFO L129 PetriNetUnfolder]: 0/10274 cut-off events. [2020-02-10 23:42:00,017 INFO L130 PetriNetUnfolder]: For 1304988/1307241 co-relation queries the response was YES. [2020-02-10 23:42:00,301 INFO L76 FinitePrefix]: Finished finitePrefix Result has 111875 conditions, 10274 events. 0/10274 cut-off events. For 1304988/1307241 co-relation queries the response was YES. Maximal size of possible extension queue 1587. Compared 195733 event pairs. 184/9965 useless extension candidates. Maximal degree in co-relation 111644. Up to 1117 conditions per place. [2020-02-10 23:42:00,301 INFO L82 GeneralOperation]: Start removeDead. Operand has 474 places, 563 transitions [2020-02-10 23:42:00,702 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 474 places, 563 transitions [2020-02-10 23:42:00,702 INFO L479 AbstractCegarLoop]: Abstraction has has 474 places, 563 transitions [2020-02-10 23:42:00,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:42:16,935 INFO L129 PetriNetUnfolder]: 0/9169 cut-off events. [2020-02-10 23:42:16,935 INFO L130 PetriNetUnfolder]: For 1310569/1312921 co-relation queries the response was YES. [2020-02-10 23:42:16,935 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:42:16,935 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] [2020-02-10 23:42:16,936 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:42:16,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:42:16,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1772314514, now seen corresponding path program 34 times [2020-02-10 23:42:16,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:42:16,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490033789] [2020-02-10 23:42:16,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:42:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:42:17,284 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 23:42:17,284 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490033789] [2020-02-10 23:42:17,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:42:17,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:42:17,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211605782] [2020-02-10 23:42:17,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:42:17,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:42:17,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:42:17,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:42:17,286 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:42:17,286 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 563 transitions. Second operand 9 states. [2020-02-10 23:42:17,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:42:17,287 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:42:17,287 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2020-02-10 23:42:35,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:42:35,872 WARN L544 AbstractCegarLoop]: Verification canceled [2020-02-10 23:42:35,876 WARN L227 ceAbstractionStarter]: Timeout [2020-02-10 23:42:35,876 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 11:42:35 BasicIcfg [2020-02-10 23:42:35,876 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-02-10 23:42:35,878 INFO L168 Benchmark]: Toolchain (without parser) took 834858.15 ms. Allocated memory was 142.6 MB in the beginning and 3.5 GB in the end (delta: 3.3 GB). Free memory was 116.4 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2020-02-10 23:42:35,878 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.48 ms. Allocated memory is still 142.6 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-02-10 23:42:35,879 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.78 ms. Allocated memory is still 142.6 MB. Free memory was 116.2 MB in the beginning and 114.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-02-10 23:42:35,879 INFO L168 Benchmark]: Boogie Preprocessor took 25.42 ms. Allocated memory is still 142.6 MB. Free memory was 114.4 MB in the beginning and 113.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-02-10 23:42:35,880 INFO L168 Benchmark]: RCFGBuilder took 399.54 ms. Allocated memory is still 142.6 MB. Free memory was 113.3 MB in the beginning and 100.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-02-10 23:42:35,880 INFO L168 Benchmark]: TraceAbstraction took 834389.36 ms. Allocated memory was 142.6 MB in the beginning and 3.5 GB in the end (delta: 3.3 GB). Free memory was 99.9 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2020-02-10 23:42:35,882 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 0.48 ms. Allocated memory is still 142.6 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 37.78 ms. Allocated memory is still 142.6 MB. Free memory was 116.2 MB in the beginning and 114.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.42 ms. Allocated memory is still 142.6 MB. Free memory was 114.4 MB in the beginning and 113.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 399.54 ms. Allocated memory is still 142.6 MB. Free memory was 113.3 MB in the beginning and 100.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 834389.36 ms. Allocated memory was 142.6 MB in the beginning and 3.5 GB in the end (delta: 3.3 GB). Free memory was 99.9 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.3s, 51 ProgramPointsBefore, 44 ProgramPointsAfterwards, 71 TransitionsBefore, 64 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 336 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 357 CheckedPairsTotal, 7 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 27). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 71/87 universal loopers) in iteration 40,while PetriNetUnfolder was constructing finite prefix that currently has 67001 conditions, 3717 events (535/3716 cut-off events. For 910980/916344 co-relation queries the response was YES. Maximal size of possible extension queue 1816. Compared 66092 event pairs. 19/5147 useless extension candidates. Maximal degree in co-relation 66776. Up to 1641 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. Result: TIMEOUT, OverallTime: 834.1s, OverallIterations: 40, TraceHistogramMax: 1, AutomataDifference: 474.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.6s, HoareTripleCheckerStatistics: 944 SDtfs, 939 SDslu, 783 SDs, 0 SdLazy, 1769 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 324 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 12.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=563occurred in iteration=39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 262.8s AutomataMinimizationTime, 39 MinimizatonAttempts, 23 StatesRemovedByMinimization, 39 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 11.8s InterpolantComputationTime, 880 NumberOfCodeBlocks, 880 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 840 ConstructedInterpolants, 0 QuantifiedInterpolants, 349650 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 40 InterpolantComputations, 40 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