/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 03:48:10,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 03:48:10,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 03:48:10,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-26 03:48:10,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 03:48:10,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 03:48:10,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 03:48:10,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 03:48:10,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 03:48:10,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 03:48:10,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 03:48:10,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 03:48:10,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 03:48:10,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 03:48:10,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 03:48:10,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 03:48:10,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 03:48:10,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 03:48:10,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 03:48:10,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 03:48:10,311 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-RepeatedSemanticLbeWithPredicates.epf [2021-03-26 03:48:10,343 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 03:48:10,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 03:48:10,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 03:48:10,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 03:48:10,347 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 03:48:10,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 03:48:10,347 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 03:48:10,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 03:48:10,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 03:48:10,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 03:48:10,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 03:48:10,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 03:48:10,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 03:48:10,349 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 03:48:10,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 03:48:10,349 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 03:48:10,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 03:48:10,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 03:48:10,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 03:48:10,350 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 03:48:10,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 03:48:10,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 03:48:10,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 03:48:10,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 03:48:10,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 03:48:10,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 03:48:10,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 03:48:10,351 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 03:48:10,352 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 03:48:10,352 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 03:48:10,352 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 03:48:10,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 03:48:10,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 03:48:10,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 03:48:10,689 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-26 03:48:10,690 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-26 03:48:10,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl [2021-03-26 03:48:10,691 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl' [2021-03-26 03:48:10,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 03:48:10,730 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-26 03:48:10,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 03:48:10,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 03:48:10,731 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 03:48:10,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:48:10" (1/1) ... [2021-03-26 03:48:10,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:48:10" (1/1) ... [2021-03-26 03:48:10,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 03:48:10,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 03:48:10,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 03:48:10,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 03:48:10,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:48:10" (1/1) ... [2021-03-26 03:48:10,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:48:10" (1/1) ... [2021-03-26 03:48:10,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:48:10" (1/1) ... [2021-03-26 03:48:10,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:48:10" (1/1) ... [2021-03-26 03:48:10,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:48:10" (1/1) ... [2021-03-26 03:48:10,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:48:10" (1/1) ... [2021-03-26 03:48:10,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:48:10" (1/1) ... [2021-03-26 03:48:10,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 03:48:10,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 03:48:10,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 03:48:10,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 03:48:10,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:48:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 03:48:10,834 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-26 03:48:10,835 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-26 03:48:10,835 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-26 03:48:10,835 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-26 03:48:10,835 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-26 03:48:10,835 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-26 03:48:10,835 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-26 03:48:10,835 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-26 03:48:10,835 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-26 03:48:10,835 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-26 03:48:10,836 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-26 03:48:10,836 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-26 03:48:10,836 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-26 03:48:10,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 03:48:10,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 03:48:10,837 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 03:48:10,961 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 03:48:10,962 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-26 03:48:10,963 INFO L202 PluginConnector]: Adding new model example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 03:48:10 BoogieIcfgContainer [2021-03-26 03:48:10,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 03:48:10,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 03:48:10,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 03:48:10,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 03:48:10,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:48:10" (1/2) ... [2021-03-26 03:48:10,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6307bc28 and model type example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 03:48:10, skipping insertion in model container [2021-03-26 03:48:10,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 03:48:10" (2/2) ... [2021-03-26 03:48:10,969 INFO L111 eAbstractionObserver]: Analyzing ICFG example_4.bpl [2021-03-26 03:48:10,973 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 03:48:10,976 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 03:48:10,977 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 03:48:11,017 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-03-26 03:48:11,032 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-26 03:48:11,049 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:48:11,049 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:48:11,049 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:48:11,049 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:48:11,050 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:48:11,050 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:48:11,050 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:48:11,050 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:48:11,061 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 35 transitions, 138 flow [2021-03-26 03:48:11,086 INFO L129 PetriNetUnfolder]: 17/47 cut-off events. [2021-03-26 03:48:11,087 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-26 03:48:11,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 47 events. 17/47 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 122 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 41. Up to 12 conditions per place. [2021-03-26 03:48:11,089 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 35 transitions, 138 flow [2021-03-26 03:48:11,093 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 29 transitions, 118 flow [2021-03-26 03:48:11,095 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:11,106 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 29 transitions, 118 flow [2021-03-26 03:48:11,109 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 29 transitions, 118 flow [2021-03-26 03:48:11,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 29 transitions, 118 flow [2021-03-26 03:48:11,122 INFO L129 PetriNetUnfolder]: 17/45 cut-off events. [2021-03-26 03:48:11,122 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-26 03:48:11,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 45 events. 17/45 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 108 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 41. Up to 12 conditions per place. [2021-03-26 03:48:11,131 INFO L142 LiptonReduction]: Number of co-enabled transitions 216 [2021-03-26 03:48:11,219 INFO L154 LiptonReduction]: Checked pairs total: 66 [2021-03-26 03:48:11,219 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-26 03:48:11,221 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 127 [2021-03-26 03:48:11,247 INFO L129 PetriNetUnfolder]: 17/40 cut-off events. [2021-03-26 03:48:11,247 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-26 03:48:11,247 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:11,248 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:11,248 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:11,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:11,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1888322031, now seen corresponding path program 1 times [2021-03-26 03:48:11,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:11,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071336997] [2021-03-26 03:48:11,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:11,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:11,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:11,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:11,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:48:11,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:11,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:11,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:11,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071336997] [2021-03-26 03:48:11,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:11,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:48:11,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439233672] [2021-03-26 03:48:11,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:48:11,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:11,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:48:11,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:48:11,504 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 39 [2021-03-26 03:48:11,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:11,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:11,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 39 [2021-03-26 03:48:11,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:11,554 INFO L129 PetriNetUnfolder]: 14/37 cut-off events. [2021-03-26 03:48:11,555 INFO L130 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2021-03-26 03:48:11,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 37 events. 14/37 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 70 event pairs, 0 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 35. Up to 12 conditions per place. [2021-03-26 03:48:11,556 INFO L132 encePairwiseOnDemand]: 37/39 looper letters, 3 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2021-03-26 03:48:11,556 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 24 transitions, 113 flow [2021-03-26 03:48:11,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:48:11,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:48:11,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2021-03-26 03:48:11,570 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9145299145299145 [2021-03-26 03:48:11,570 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 107 transitions. [2021-03-26 03:48:11,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 107 transitions. [2021-03-26 03:48:11,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:11,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 107 transitions. [2021-03-26 03:48:11,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:11,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:11,583 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:11,585 INFO L185 Difference]: Start difference. First operand has 26 places, 25 transitions, 110 flow. Second operand 3 states and 107 transitions. [2021-03-26 03:48:11,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 24 transitions, 113 flow [2021-03-26 03:48:11,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 24 transitions, 75 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-03-26 03:48:11,594 INFO L241 Difference]: Finished difference. Result has 20 places, 24 transitions, 69 flow [2021-03-26 03:48:11,595 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=20, PETRI_TRANSITIONS=24} [2021-03-26 03:48:11,596 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, -6 predicate places. [2021-03-26 03:48:11,596 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:11,597 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 24 transitions, 69 flow [2021-03-26 03:48:11,597 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 24 transitions, 69 flow [2021-03-26 03:48:11,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 24 transitions, 69 flow [2021-03-26 03:48:11,612 INFO L129 PetriNetUnfolder]: 14/37 cut-off events. [2021-03-26 03:48:11,612 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:48:11,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 37 events. 14/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 77 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 37. Up to 12 conditions per place. [2021-03-26 03:48:11,614 INFO L142 LiptonReduction]: Number of co-enabled transitions 90 [2021-03-26 03:48:11,616 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:11,616 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:11,616 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20 [2021-03-26 03:48:11,619 INFO L480 AbstractCegarLoop]: Abstraction has has 20 places, 24 transitions, 69 flow [2021-03-26 03:48:11,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:11,620 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:11,620 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:11,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 03:48:11,621 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:11,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:11,621 INFO L82 PathProgramCache]: Analyzing trace with hash -153583415, now seen corresponding path program 1 times [2021-03-26 03:48:11,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:11,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316728884] [2021-03-26 03:48:11,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:11,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:11,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:11,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:11,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:48:11,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:11,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:11,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:11,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316728884] [2021-03-26 03:48:11,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:11,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:48:11,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184770585] [2021-03-26 03:48:11,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:48:11,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:11,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:48:11,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:48:11,673 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 39 [2021-03-26 03:48:11,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 24 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:11,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:11,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 39 [2021-03-26 03:48:11,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:11,697 INFO L129 PetriNetUnfolder]: 6/25 cut-off events. [2021-03-26 03:48:11,697 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-26 03:48:11,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 25 events. 6/25 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 3/28 useless extension candidates. Maximal degree in co-relation 30. Up to 6 conditions per place. [2021-03-26 03:48:11,697 INFO L132 encePairwiseOnDemand]: 36/39 looper letters, 2 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2021-03-26 03:48:11,697 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 22 transitions, 69 flow [2021-03-26 03:48:11,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:48:11,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:48:11,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2021-03-26 03:48:11,702 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9145299145299145 [2021-03-26 03:48:11,702 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 107 transitions. [2021-03-26 03:48:11,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 107 transitions. [2021-03-26 03:48:11,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:11,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 107 transitions. [2021-03-26 03:48:11,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:11,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:11,704 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:11,705 INFO L185 Difference]: Start difference. First operand has 20 places, 24 transitions, 69 flow. Second operand 3 states and 107 transitions. [2021-03-26 03:48:11,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 22 transitions, 69 flow [2021-03-26 03:48:11,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 22 transitions, 68 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:48:11,705 INFO L241 Difference]: Finished difference. Result has 21 places, 22 transitions, 64 flow [2021-03-26 03:48:11,706 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=21, PETRI_TRANSITIONS=22} [2021-03-26 03:48:11,706 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, -5 predicate places. [2021-03-26 03:48:11,706 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:11,706 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 21 places, 22 transitions, 64 flow [2021-03-26 03:48:11,706 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 21 places, 22 transitions, 64 flow [2021-03-26 03:48:11,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 22 transitions, 64 flow [2021-03-26 03:48:11,710 INFO L129 PetriNetUnfolder]: 6/25 cut-off events. [2021-03-26 03:48:11,710 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:48:11,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 25 events. 6/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 26. Up to 6 conditions per place. [2021-03-26 03:48:11,711 INFO L142 LiptonReduction]: Number of co-enabled transitions 62 [2021-03-26 03:48:11,712 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:11,712 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:11,712 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-26 03:48:11,713 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 22 transitions, 64 flow [2021-03-26 03:48:11,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:11,713 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:11,714 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:11,714 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 03:48:11,714 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:11,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:11,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1587378979, now seen corresponding path program 1 times [2021-03-26 03:48:11,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:11,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046994778] [2021-03-26 03:48:11,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:11,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:11,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:11,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:11,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:48:11,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:11,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:11,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:11,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046994778] [2021-03-26 03:48:11,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:11,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:48:11,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039022286] [2021-03-26 03:48:11,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:48:11,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:11,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:48:11,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:48:11,743 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 39 [2021-03-26 03:48:11,743 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 22 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:11,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:11,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 39 [2021-03-26 03:48:11,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:11,756 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-03-26 03:48:11,756 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-26 03:48:11,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 13 events. 0/13 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 0 based on Foata normal form. 3/16 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 03:48:11,757 INFO L132 encePairwiseOnDemand]: 35/39 looper letters, 1 selfloop transitions, 1 changer transitions 0/13 dead transitions. [2021-03-26 03:48:11,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 13 transitions, 41 flow [2021-03-26 03:48:11,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:48:11,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:48:11,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2021-03-26 03:48:11,761 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9145299145299145 [2021-03-26 03:48:11,761 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 107 transitions. [2021-03-26 03:48:11,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 107 transitions. [2021-03-26 03:48:11,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:11,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 107 transitions. [2021-03-26 03:48:11,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:11,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:11,763 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:11,764 INFO L185 Difference]: Start difference. First operand has 21 places, 22 transitions, 64 flow. Second operand 3 states and 107 transitions. [2021-03-26 03:48:11,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 13 transitions, 41 flow [2021-03-26 03:48:11,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 13 transitions, 40 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:48:11,764 INFO L241 Difference]: Finished difference. Result has 22 places, 13 transitions, 38 flow [2021-03-26 03:48:11,765 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=22, PETRI_TRANSITIONS=13} [2021-03-26 03:48:11,772 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, -4 predicate places. [2021-03-26 03:48:11,772 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:11,772 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 13 transitions, 38 flow [2021-03-26 03:48:11,773 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 13 transitions, 38 flow [2021-03-26 03:48:11,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 22 places, 13 transitions, 38 flow [2021-03-26 03:48:11,775 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-03-26 03:48:11,776 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:48:11,776 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 13 events. 0/13 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-26 03:48:11,776 INFO L142 LiptonReduction]: Number of co-enabled transitions 36 [2021-03-26 03:48:11,777 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:11,777 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:11,777 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-26 03:48:11,778 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 13 transitions, 38 flow [2021-03-26 03:48:11,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:11,778 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:11,778 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:11,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 03:48:11,779 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:11,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:11,779 INFO L82 PathProgramCache]: Analyzing trace with hash -136113801, now seen corresponding path program 1 times [2021-03-26 03:48:11,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:11,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607252764] [2021-03-26 03:48:11,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:11,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:11,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:11,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:11,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:48:11,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:11,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:48:11,852 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:48:11,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:48:11,872 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-26 03:48:11,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 03:48:11,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:11,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607252764] [2021-03-26 03:48:11,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:11,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:48:11,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561223775] [2021-03-26 03:48:11,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:48:11,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:11,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:48:11,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:48:11,892 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-26 03:48:11,892 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 13 transitions, 38 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:11,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:11,892 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-26 03:48:11,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:11,953 INFO L129 PetriNetUnfolder]: 15/65 cut-off events. [2021-03-26 03:48:11,953 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:48:11,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 65 events. 15/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 249 event pairs, 5 based on Foata normal form. 1/61 useless extension candidates. Maximal degree in co-relation 107. Up to 17 conditions per place. [2021-03-26 03:48:11,954 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 9 selfloop transitions, 3 changer transitions 1/21 dead transitions. [2021-03-26 03:48:11,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 80 flow [2021-03-26 03:48:11,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:48:11,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:48:11,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-26 03:48:11,956 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-26 03:48:11,956 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-26 03:48:11,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-26 03:48:11,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:11,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-26 03:48:11,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:11,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:11,959 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:11,959 INFO L185 Difference]: Start difference. First operand has 22 places, 13 transitions, 38 flow. Second operand 6 states and 188 transitions. [2021-03-26 03:48:11,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 80 flow [2021-03-26 03:48:11,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 21 transitions, 79 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:48:11,961 INFO L241 Difference]: Finished difference. Result has 30 places, 15 transitions, 60 flow [2021-03-26 03:48:11,961 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=60, PETRI_PLACES=30, PETRI_TRANSITIONS=15} [2021-03-26 03:48:11,961 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2021-03-26 03:48:11,961 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:11,962 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 15 transitions, 60 flow [2021-03-26 03:48:11,962 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 15 transitions, 60 flow [2021-03-26 03:48:11,962 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 15 transitions, 60 flow [2021-03-26 03:48:11,966 INFO L129 PetriNetUnfolder]: 0/29 cut-off events. [2021-03-26 03:48:11,966 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-26 03:48:11,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 29 events. 0/29 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 64 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-26 03:48:11,967 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 03:48:11,968 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:11,968 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:11,968 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-26 03:48:11,969 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 15 transitions, 60 flow [2021-03-26 03:48:11,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:11,969 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:11,969 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:11,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 03:48:11,969 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:11,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:11,970 INFO L82 PathProgramCache]: Analyzing trace with hash -816343229, now seen corresponding path program 2 times [2021-03-26 03:48:11,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:11,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981660766] [2021-03-26 03:48:11,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:11,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:11,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:11,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:11,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:48:12,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:12,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:48:12,017 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-26 03:48:12,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 03:48:12,035 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-26 03:48:12,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 03:48:12,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:12,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981660766] [2021-03-26 03:48:12,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:12,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:48:12,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959569575] [2021-03-26 03:48:12,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:48:12,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:12,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:48:12,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:48:12,054 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-26 03:48:12,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 15 transitions, 60 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:12,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-26 03:48:12,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:12,099 INFO L129 PetriNetUnfolder]: 11/87 cut-off events. [2021-03-26 03:48:12,100 INFO L130 PetriNetUnfolder]: For 72/80 co-relation queries the response was YES. [2021-03-26 03:48:12,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 87 events. 11/87 cut-off events. For 72/80 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 436 event pairs, 3 based on Foata normal form. 1/81 useless extension candidates. Maximal degree in co-relation 194. Up to 22 conditions per place. [2021-03-26 03:48:12,101 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 11 selfloop transitions, 5 changer transitions 2/26 dead transitions. [2021-03-26 03:48:12,101 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 149 flow [2021-03-26 03:48:12,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:48:12,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:48:12,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-26 03:48:12,102 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-26 03:48:12,103 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-26 03:48:12,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-26 03:48:12,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:12,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-26 03:48:12,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,105 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,105 INFO L185 Difference]: Start difference. First operand has 29 places, 15 transitions, 60 flow. Second operand 6 states and 188 transitions. [2021-03-26 03:48:12,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 149 flow [2021-03-26 03:48:12,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 139 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-03-26 03:48:12,107 INFO L241 Difference]: Finished difference. Result has 36 places, 19 transitions, 108 flow [2021-03-26 03:48:12,107 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=36, PETRI_TRANSITIONS=19} [2021-03-26 03:48:12,107 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2021-03-26 03:48:12,108 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:12,108 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 19 transitions, 108 flow [2021-03-26 03:48:12,108 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 19 transitions, 108 flow [2021-03-26 03:48:12,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 19 transitions, 108 flow [2021-03-26 03:48:12,114 INFO L129 PetriNetUnfolder]: 0/63 cut-off events. [2021-03-26 03:48:12,114 INFO L130 PetriNetUnfolder]: For 58/60 co-relation queries the response was YES. [2021-03-26 03:48:12,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 63 events. 0/63 cut-off events. For 58/60 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 294 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-03-26 03:48:12,115 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-26 03:48:12,116 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:12,116 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:12,117 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-03-26 03:48:12,117 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 19 transitions, 108 flow [2021-03-26 03:48:12,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,118 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:12,118 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:12,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 03:48:12,118 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:12,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:12,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1390381937, now seen corresponding path program 3 times [2021-03-26 03:48:12,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:12,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859483441] [2021-03-26 03:48:12,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:12,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:12,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:12,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:12,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:48:12,149 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-26 03:48:12,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 03:48:12,160 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:48:12,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:48:12,177 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-26 03:48:12,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 03:48:12,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:12,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859483441] [2021-03-26 03:48:12,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:12,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:48:12,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500998053] [2021-03-26 03:48:12,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:48:12,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:12,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:48:12,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:48:12,210 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-26 03:48:12,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 19 transitions, 108 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:12,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-26 03:48:12,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:12,269 INFO L129 PetriNetUnfolder]: 10/95 cut-off events. [2021-03-26 03:48:12,269 INFO L130 PetriNetUnfolder]: For 171/177 co-relation queries the response was YES. [2021-03-26 03:48:12,270 INFO L84 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 95 events. 10/95 cut-off events. For 171/177 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 509 event pairs, 2 based on Foata normal form. 1/91 useless extension candidates. Maximal degree in co-relation 262. Up to 25 conditions per place. [2021-03-26 03:48:12,271 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 12 selfloop transitions, 9 changer transitions 1/30 dead transitions. [2021-03-26 03:48:12,271 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 30 transitions, 225 flow [2021-03-26 03:48:12,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:48:12,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:48:12,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-26 03:48:12,272 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-26 03:48:12,272 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-26 03:48:12,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-26 03:48:12,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:12,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-26 03:48:12,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,274 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,274 INFO L185 Difference]: Start difference. First operand has 35 places, 19 transitions, 108 flow. Second operand 6 states and 188 transitions. [2021-03-26 03:48:12,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 30 transitions, 225 flow [2021-03-26 03:48:12,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 30 transitions, 215 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-03-26 03:48:12,281 INFO L241 Difference]: Finished difference. Result has 42 places, 24 transitions, 189 flow [2021-03-26 03:48:12,281 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=42, PETRI_TRANSITIONS=24} [2021-03-26 03:48:12,281 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2021-03-26 03:48:12,282 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:12,283 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 24 transitions, 189 flow [2021-03-26 03:48:12,283 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 24 transitions, 189 flow [2021-03-26 03:48:12,283 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 24 transitions, 189 flow [2021-03-26 03:48:12,290 INFO L129 PetriNetUnfolder]: 0/73 cut-off events. [2021-03-26 03:48:12,290 INFO L130 PetriNetUnfolder]: For 177/187 co-relation queries the response was YES. [2021-03-26 03:48:12,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 73 events. 0/73 cut-off events. For 177/187 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 387 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-03-26 03:48:12,292 INFO L142 LiptonReduction]: Number of co-enabled transitions 52 [2021-03-26 03:48:12,294 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:12,294 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:12,294 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-03-26 03:48:12,299 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 24 transitions, 189 flow [2021-03-26 03:48:12,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,299 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:12,299 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:12,300 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 03:48:12,300 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:12,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:12,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1130172361, now seen corresponding path program 4 times [2021-03-26 03:48:12,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:12,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406639430] [2021-03-26 03:48:12,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:12,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:12,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:12,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:12,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:48:12,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:12,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:48:12,372 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-26 03:48:12,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 03:48:12,391 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-26 03:48:12,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 03:48:12,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:12,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406639430] [2021-03-26 03:48:12,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:12,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:48:12,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973001408] [2021-03-26 03:48:12,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:48:12,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:12,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:48:12,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:48:12,412 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-26 03:48:12,413 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 24 transitions, 189 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,413 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:12,413 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-26 03:48:12,413 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:12,460 INFO L129 PetriNetUnfolder]: 8/101 cut-off events. [2021-03-26 03:48:12,461 INFO L130 PetriNetUnfolder]: For 315/323 co-relation queries the response was YES. [2021-03-26 03:48:12,462 INFO L84 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 101 events. 8/101 cut-off events. For 315/323 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 580 event pairs, 6 based on Foata normal form. 1/100 useless extension candidates. Maximal degree in co-relation 322. Up to 23 conditions per place. [2021-03-26 03:48:12,463 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 13 selfloop transitions, 11 changer transitions 2/34 dead transitions. [2021-03-26 03:48:12,463 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 34 transitions, 320 flow [2021-03-26 03:48:12,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:48:12,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:48:12,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-26 03:48:12,464 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-26 03:48:12,465 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-26 03:48:12,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-26 03:48:12,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:12,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-26 03:48:12,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,466 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,466 INFO L185 Difference]: Start difference. First operand has 41 places, 24 transitions, 189 flow. Second operand 6 states and 188 transitions. [2021-03-26 03:48:12,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 34 transitions, 320 flow [2021-03-26 03:48:12,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 34 transitions, 303 flow, removed 5 selfloop flow, removed 2 redundant places. [2021-03-26 03:48:12,470 INFO L241 Difference]: Finished difference. Result has 48 places, 26 transitions, 241 flow [2021-03-26 03:48:12,470 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=241, PETRI_PLACES=48, PETRI_TRANSITIONS=26} [2021-03-26 03:48:12,470 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 22 predicate places. [2021-03-26 03:48:12,471 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:12,471 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 26 transitions, 241 flow [2021-03-26 03:48:12,471 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 26 transitions, 241 flow [2021-03-26 03:48:12,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 26 transitions, 241 flow [2021-03-26 03:48:12,488 INFO L129 PetriNetUnfolder]: 0/80 cut-off events. [2021-03-26 03:48:12,488 INFO L130 PetriNetUnfolder]: For 350/374 co-relation queries the response was YES. [2021-03-26 03:48:12,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 80 events. 0/80 cut-off events. For 350/374 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 452 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2021-03-26 03:48:12,489 INFO L142 LiptonReduction]: Number of co-enabled transitions 60 [2021-03-26 03:48:12,491 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:12,491 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:12,491 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20 [2021-03-26 03:48:12,492 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 26 transitions, 241 flow [2021-03-26 03:48:12,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,492 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:12,492 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:12,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 03:48:12,492 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:12,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:12,494 INFO L82 PathProgramCache]: Analyzing trace with hash 892919981, now seen corresponding path program 5 times [2021-03-26 03:48:12,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:12,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404933780] [2021-03-26 03:48:12,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:12,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:12,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:12,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:12,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:48:12,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:12,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:48:12,552 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:48:12,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:48:12,569 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-26 03:48:12,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 03:48:12,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:12,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404933780] [2021-03-26 03:48:12,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:12,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:48:12,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960707058] [2021-03-26 03:48:12,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:48:12,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:12,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:48:12,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:48:12,587 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-26 03:48:12,588 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 26 transitions, 241 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:12,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-26 03:48:12,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:12,653 INFO L129 PetriNetUnfolder]: 7/99 cut-off events. [2021-03-26 03:48:12,653 INFO L130 PetriNetUnfolder]: For 450/460 co-relation queries the response was YES. [2021-03-26 03:48:12,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 99 events. 7/99 cut-off events. For 450/460 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 567 event pairs, 5 based on Foata normal form. 3/98 useless extension candidates. Maximal degree in co-relation 361. Up to 22 conditions per place. [2021-03-26 03:48:12,654 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 11 selfloop transitions, 12 changer transitions 4/35 dead transitions. [2021-03-26 03:48:12,654 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 35 transitions, 379 flow [2021-03-26 03:48:12,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:48:12,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:48:12,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-26 03:48:12,655 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-26 03:48:12,656 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-26 03:48:12,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-26 03:48:12,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:12,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-26 03:48:12,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,658 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,658 INFO L185 Difference]: Start difference. First operand has 47 places, 26 transitions, 241 flow. Second operand 6 states and 188 transitions. [2021-03-26 03:48:12,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 35 transitions, 379 flow [2021-03-26 03:48:12,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 35 transitions, 349 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-03-26 03:48:12,662 INFO L241 Difference]: Finished difference. Result has 53 places, 27 transitions, 279 flow [2021-03-26 03:48:12,662 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=279, PETRI_PLACES=53, PETRI_TRANSITIONS=27} [2021-03-26 03:48:12,662 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 27 predicate places. [2021-03-26 03:48:12,662 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:12,662 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 27 transitions, 279 flow [2021-03-26 03:48:12,663 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 27 transitions, 279 flow [2021-03-26 03:48:12,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 27 transitions, 279 flow [2021-03-26 03:48:12,675 INFO L129 PetriNetUnfolder]: 0/75 cut-off events. [2021-03-26 03:48:12,675 INFO L130 PetriNetUnfolder]: For 407/430 co-relation queries the response was YES. [2021-03-26 03:48:12,676 INFO L84 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 75 events. 0/75 cut-off events. For 407/430 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 405 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-03-26 03:48:12,676 INFO L142 LiptonReduction]: Number of co-enabled transitions 56 [2021-03-26 03:48:12,679 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:12,679 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:12,679 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17 [2021-03-26 03:48:12,680 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 27 transitions, 279 flow [2021-03-26 03:48:12,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,680 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:12,680 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:12,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 03:48:12,680 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:12,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:12,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2125071045, now seen corresponding path program 6 times [2021-03-26 03:48:12,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:12,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692051492] [2021-03-26 03:48:12,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:12,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:12,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:12,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:12,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:48:12,737 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-26 03:48:12,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 03:48:12,746 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-26 03:48:12,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 03:48:12,760 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-26 03:48:12,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 03:48:12,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:12,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692051492] [2021-03-26 03:48:12,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:12,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:48:12,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387893835] [2021-03-26 03:48:12,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:48:12,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:12,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:48:12,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:48:12,775 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-26 03:48:12,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 27 transitions, 279 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:12,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-26 03:48:12,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:12,815 INFO L129 PetriNetUnfolder]: 6/90 cut-off events. [2021-03-26 03:48:12,815 INFO L130 PetriNetUnfolder]: For 574/600 co-relation queries the response was YES. [2021-03-26 03:48:12,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 90 events. 6/90 cut-off events. For 574/600 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 499 event pairs, 6 based on Foata normal form. 6/93 useless extension candidates. Maximal degree in co-relation 361. Up to 23 conditions per place. [2021-03-26 03:48:12,816 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 10 selfloop transitions, 14 changer transitions 1/33 dead transitions. [2021-03-26 03:48:12,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 33 transitions, 389 flow [2021-03-26 03:48:12,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:48:12,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:48:12,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-26 03:48:12,817 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-26 03:48:12,818 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-26 03:48:12,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-26 03:48:12,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:12,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-26 03:48:12,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,819 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,819 INFO L185 Difference]: Start difference. First operand has 52 places, 27 transitions, 279 flow. Second operand 6 states and 188 transitions. [2021-03-26 03:48:12,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 33 transitions, 389 flow [2021-03-26 03:48:12,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 33 transitions, 343 flow, removed 16 selfloop flow, removed 5 redundant places. [2021-03-26 03:48:12,823 INFO L241 Difference]: Finished difference. Result has 56 places, 29 transitions, 325 flow [2021-03-26 03:48:12,823 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=56, PETRI_TRANSITIONS=29} [2021-03-26 03:48:12,823 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 30 predicate places. [2021-03-26 03:48:12,823 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:12,824 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 29 transitions, 325 flow [2021-03-26 03:48:12,824 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 29 transitions, 325 flow [2021-03-26 03:48:12,824 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 29 transitions, 325 flow [2021-03-26 03:48:12,831 INFO L129 PetriNetUnfolder]: 0/77 cut-off events. [2021-03-26 03:48:12,831 INFO L130 PetriNetUnfolder]: For 544/595 co-relation queries the response was YES. [2021-03-26 03:48:12,831 INFO L84 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 77 events. 0/77 cut-off events. For 544/595 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 422 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-03-26 03:48:12,832 INFO L142 LiptonReduction]: Number of co-enabled transitions 64 [2021-03-26 03:48:12,834 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:12,834 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:12,834 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-26 03:48:12,836 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 29 transitions, 325 flow [2021-03-26 03:48:12,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,836 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:12,836 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:12,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-26 03:48:12,836 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:12,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:12,836 INFO L82 PathProgramCache]: Analyzing trace with hash -452147191, now seen corresponding path program 7 times [2021-03-26 03:48:12,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:12,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029977921] [2021-03-26 03:48:12,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:12,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:12,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:12,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:12,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:48:12,903 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-26 03:48:12,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 03:48:12,915 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:48:12,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:48:12,931 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-26 03:48:12,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 03:48:12,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:12,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029977921] [2021-03-26 03:48:12,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:12,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:48:12,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636689932] [2021-03-26 03:48:12,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:48:12,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:12,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:48:12,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:48:12,947 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-26 03:48:12,948 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 29 transitions, 325 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:12,948 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:12,948 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-26 03:48:12,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:12,999 INFO L129 PetriNetUnfolder]: 6/87 cut-off events. [2021-03-26 03:48:12,999 INFO L130 PetriNetUnfolder]: For 536/565 co-relation queries the response was YES. [2021-03-26 03:48:12,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 87 events. 6/87 cut-off events. For 536/565 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 456 event pairs, 6 based on Foata normal form. 8/93 useless extension candidates. Maximal degree in co-relation 355. Up to 23 conditions per place. [2021-03-26 03:48:13,000 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 8 selfloop transitions, 12 changer transitions 4/32 dead transitions. [2021-03-26 03:48:13,000 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 32 transitions, 403 flow [2021-03-26 03:48:13,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:48:13,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:48:13,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-03-26 03:48:13,002 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2021-03-26 03:48:13,002 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-03-26 03:48:13,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-03-26 03:48:13,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:13,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-03-26 03:48:13,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,004 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,004 INFO L185 Difference]: Start difference. First operand has 55 places, 29 transitions, 325 flow. Second operand 6 states and 187 transitions. [2021-03-26 03:48:13,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 32 transitions, 403 flow [2021-03-26 03:48:13,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 32 transitions, 383 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-26 03:48:13,008 INFO L241 Difference]: Finished difference. Result has 60 places, 27 transitions, 313 flow [2021-03-26 03:48:13,009 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=313, PETRI_PLACES=60, PETRI_TRANSITIONS=27} [2021-03-26 03:48:13,009 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 34 predicate places. [2021-03-26 03:48:13,009 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:13,009 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 27 transitions, 313 flow [2021-03-26 03:48:13,010 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 27 transitions, 313 flow [2021-03-26 03:48:13,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 27 transitions, 313 flow [2021-03-26 03:48:13,016 INFO L129 PetriNetUnfolder]: 0/68 cut-off events. [2021-03-26 03:48:13,016 INFO L130 PetriNetUnfolder]: For 484/517 co-relation queries the response was YES. [2021-03-26 03:48:13,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 68 events. 0/68 cut-off events. For 484/517 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 334 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-03-26 03:48:13,017 INFO L142 LiptonReduction]: Number of co-enabled transitions 50 [2021-03-26 03:48:13,019 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:13,019 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:13,019 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-03-26 03:48:13,020 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 27 transitions, 313 flow [2021-03-26 03:48:13,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,020 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:13,020 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:13,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-26 03:48:13,020 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:13,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:13,020 INFO L82 PathProgramCache]: Analyzing trace with hash -455715067, now seen corresponding path program 8 times [2021-03-26 03:48:13,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:13,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363858138] [2021-03-26 03:48:13,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:13,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:13,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:13,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:13,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:48:13,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:13,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:48:13,076 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:48:13,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:48:13,092 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-26 03:48:13,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 03:48:13,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:13,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363858138] [2021-03-26 03:48:13,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:13,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:48:13,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757159946] [2021-03-26 03:48:13,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:48:13,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:13,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:48:13,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:48:13,108 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-26 03:48:13,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 27 transitions, 313 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:13,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-26 03:48:13,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:13,152 INFO L129 PetriNetUnfolder]: 5/83 cut-off events. [2021-03-26 03:48:13,152 INFO L130 PetriNetUnfolder]: For 489/509 co-relation queries the response was YES. [2021-03-26 03:48:13,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 83 events. 5/83 cut-off events. For 489/509 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 425 event pairs, 5 based on Foata normal form. 6/87 useless extension candidates. Maximal degree in co-relation 339. Up to 18 conditions per place. [2021-03-26 03:48:13,153 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 10 selfloop transitions, 10 changer transitions 2/30 dead transitions. [2021-03-26 03:48:13,153 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 30 transitions, 390 flow [2021-03-26 03:48:13,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:48:13,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:48:13,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-03-26 03:48:13,154 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2021-03-26 03:48:13,154 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-03-26 03:48:13,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-03-26 03:48:13,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:13,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-03-26 03:48:13,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,155 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,156 INFO L185 Difference]: Start difference. First operand has 57 places, 27 transitions, 313 flow. Second operand 6 states and 187 transitions. [2021-03-26 03:48:13,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 30 transitions, 390 flow [2021-03-26 03:48:13,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 30 transitions, 308 flow, removed 8 selfloop flow, removed 11 redundant places. [2021-03-26 03:48:13,159 INFO L241 Difference]: Finished difference. Result has 54 places, 27 transitions, 270 flow [2021-03-26 03:48:13,159 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=270, PETRI_PLACES=54, PETRI_TRANSITIONS=27} [2021-03-26 03:48:13,159 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 28 predicate places. [2021-03-26 03:48:13,159 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:13,159 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 27 transitions, 270 flow [2021-03-26 03:48:13,159 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 27 transitions, 270 flow [2021-03-26 03:48:13,160 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 27 transitions, 270 flow [2021-03-26 03:48:13,164 INFO L129 PetriNetUnfolder]: 0/69 cut-off events. [2021-03-26 03:48:13,165 INFO L130 PetriNetUnfolder]: For 321/337 co-relation queries the response was YES. [2021-03-26 03:48:13,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 69 events. 0/69 cut-off events. For 321/337 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 345 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-03-26 03:48:13,165 INFO L142 LiptonReduction]: Number of co-enabled transitions 48 [2021-03-26 03:48:13,167 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:13,167 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:13,167 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-26 03:48:13,167 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 27 transitions, 270 flow [2021-03-26 03:48:13,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,167 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:13,168 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:13,168 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-26 03:48:13,168 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:13,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:13,168 INFO L82 PathProgramCache]: Analyzing trace with hash 2128638921, now seen corresponding path program 9 times [2021-03-26 03:48:13,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:13,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590244206] [2021-03-26 03:48:13,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:13,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:13,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:13,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:13,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:48:13,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:13,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:48:13,192 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:48:13,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:48:13,205 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-26 03:48:13,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 03:48:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:13,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590244206] [2021-03-26 03:48:13,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:13,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:48:13,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716005206] [2021-03-26 03:48:13,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:48:13,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:13,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:48:13,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:48:13,218 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-26 03:48:13,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 27 transitions, 270 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:13,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-26 03:48:13,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:13,266 INFO L129 PetriNetUnfolder]: 5/77 cut-off events. [2021-03-26 03:48:13,267 INFO L130 PetriNetUnfolder]: For 292/306 co-relation queries the response was YES. [2021-03-26 03:48:13,267 INFO L84 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 77 events. 5/77 cut-off events. For 292/306 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 375 event pairs, 5 based on Foata normal form. 5/80 useless extension candidates. Maximal degree in co-relation 293. Up to 18 conditions per place. [2021-03-26 03:48:13,267 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 11 selfloop transitions, 9 changer transitions 3/31 dead transitions. [2021-03-26 03:48:13,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 31 transitions, 350 flow [2021-03-26 03:48:13,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:48:13,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:48:13,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-26 03:48:13,269 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-26 03:48:13,269 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-26 03:48:13,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-26 03:48:13,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:13,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-26 03:48:13,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,270 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,270 INFO L185 Difference]: Start difference. First operand has 52 places, 27 transitions, 270 flow. Second operand 6 states and 188 transitions. [2021-03-26 03:48:13,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 31 transitions, 350 flow [2021-03-26 03:48:13,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 31 transitions, 322 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-26 03:48:13,273 INFO L241 Difference]: Finished difference. Result has 55 places, 26 transitions, 263 flow [2021-03-26 03:48:13,273 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=55, PETRI_TRANSITIONS=26} [2021-03-26 03:48:13,273 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 29 predicate places. [2021-03-26 03:48:13,273 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:13,273 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 26 transitions, 263 flow [2021-03-26 03:48:13,273 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 26 transitions, 263 flow [2021-03-26 03:48:13,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 26 transitions, 263 flow [2021-03-26 03:48:13,278 INFO L129 PetriNetUnfolder]: 0/59 cut-off events. [2021-03-26 03:48:13,278 INFO L130 PetriNetUnfolder]: For 278/290 co-relation queries the response was YES. [2021-03-26 03:48:13,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 59 events. 0/59 cut-off events. For 278/290 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 267 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-03-26 03:48:13,279 INFO L142 LiptonReduction]: Number of co-enabled transitions 46 [2021-03-26 03:48:13,280 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:13,280 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:13,280 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-26 03:48:13,281 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 26 transitions, 263 flow [2021-03-26 03:48:13,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,281 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:13,281 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:13,282 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-26 03:48:13,282 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:13,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:13,282 INFO L82 PathProgramCache]: Analyzing trace with hash 2084936939, now seen corresponding path program 10 times [2021-03-26 03:48:13,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:13,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275861319] [2021-03-26 03:48:13,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:13,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:13,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:13,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:13,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:48:13,308 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-26 03:48:13,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 03:48:13,321 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-26 03:48:13,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 03:48:13,336 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-26 03:48:13,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 03:48:13,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:13,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275861319] [2021-03-26 03:48:13,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:13,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:48:13,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492321670] [2021-03-26 03:48:13,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:48:13,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:13,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:48:13,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:48:13,353 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-26 03:48:13,353 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 26 transitions, 263 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,353 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:13,353 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-26 03:48:13,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:13,391 INFO L129 PetriNetUnfolder]: 5/67 cut-off events. [2021-03-26 03:48:13,391 INFO L130 PetriNetUnfolder]: For 232/232 co-relation queries the response was YES. [2021-03-26 03:48:13,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 67 events. 5/67 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 311 event pairs, 1 based on Foata normal form. 1/67 useless extension candidates. Maximal degree in co-relation 256. Up to 14 conditions per place. [2021-03-26 03:48:13,392 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 13 selfloop transitions, 8 changer transitions 2/31 dead transitions. [2021-03-26 03:48:13,392 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 31 transitions, 345 flow [2021-03-26 03:48:13,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:48:13,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:48:13,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-26 03:48:13,393 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-26 03:48:13,393 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-26 03:48:13,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-26 03:48:13,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:13,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-26 03:48:13,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,395 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,395 INFO L185 Difference]: Start difference. First operand has 54 places, 26 transitions, 263 flow. Second operand 6 states and 188 transitions. [2021-03-26 03:48:13,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 31 transitions, 345 flow [2021-03-26 03:48:13,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 31 transitions, 323 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-26 03:48:13,397 INFO L241 Difference]: Finished difference. Result has 58 places, 25 transitions, 252 flow [2021-03-26 03:48:13,398 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=58, PETRI_TRANSITIONS=25} [2021-03-26 03:48:13,398 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 32 predicate places. [2021-03-26 03:48:13,398 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:13,398 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 25 transitions, 252 flow [2021-03-26 03:48:13,398 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 25 transitions, 252 flow [2021-03-26 03:48:13,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 56 places, 25 transitions, 252 flow [2021-03-26 03:48:13,403 INFO L129 PetriNetUnfolder]: 0/50 cut-off events. [2021-03-26 03:48:13,403 INFO L130 PetriNetUnfolder]: For 222/232 co-relation queries the response was YES. [2021-03-26 03:48:13,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 50 events. 0/50 cut-off events. For 222/232 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 202 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-03-26 03:48:13,404 INFO L142 LiptonReduction]: Number of co-enabled transitions 36 [2021-03-26 03:48:13,405 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:13,405 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:13,406 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-26 03:48:13,406 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 25 transitions, 252 flow [2021-03-26 03:48:13,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,406 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:13,406 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:13,407 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-26 03:48:13,407 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:13,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:13,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1473450575, now seen corresponding path program 11 times [2021-03-26 03:48:13,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:13,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242723926] [2021-03-26 03:48:13,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:13,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:13,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:13,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:13,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:48:13,431 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-26 03:48:13,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 03:48:13,451 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-26 03:48:13,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 03:48:13,470 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-26 03:48:13,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 03:48:13,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:13,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242723926] [2021-03-26 03:48:13,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:13,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:48:13,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646748231] [2021-03-26 03:48:13,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:48:13,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:13,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:48:13,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:48:13,488 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-26 03:48:13,489 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 25 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:13,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-26 03:48:13,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:13,526 INFO L129 PetriNetUnfolder]: 3/78 cut-off events. [2021-03-26 03:48:13,526 INFO L130 PetriNetUnfolder]: For 283/283 co-relation queries the response was YES. [2021-03-26 03:48:13,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 78 events. 3/78 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 385 event pairs, 1 based on Foata normal form. 1/77 useless extension candidates. Maximal degree in co-relation 286. Up to 18 conditions per place. [2021-03-26 03:48:13,527 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 16 selfloop transitions, 8 changer transitions 2/34 dead transitions. [2021-03-26 03:48:13,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 34 transitions, 404 flow [2021-03-26 03:48:13,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:48:13,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:48:13,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-26 03:48:13,528 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-26 03:48:13,529 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-26 03:48:13,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-26 03:48:13,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:13,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-26 03:48:13,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,530 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,530 INFO L185 Difference]: Start difference. First operand has 56 places, 25 transitions, 252 flow. Second operand 6 states and 188 transitions. [2021-03-26 03:48:13,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 34 transitions, 404 flow [2021-03-26 03:48:13,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 34 transitions, 359 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-03-26 03:48:13,533 INFO L241 Difference]: Finished difference. Result has 60 places, 27 transitions, 277 flow [2021-03-26 03:48:13,533 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=60, PETRI_TRANSITIONS=27} [2021-03-26 03:48:13,533 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 34 predicate places. [2021-03-26 03:48:13,533 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:13,533 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 27 transitions, 277 flow [2021-03-26 03:48:13,534 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 27 transitions, 277 flow [2021-03-26 03:48:13,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 27 transitions, 277 flow [2021-03-26 03:48:13,541 INFO L129 PetriNetUnfolder]: 0/66 cut-off events. [2021-03-26 03:48:13,542 INFO L130 PetriNetUnfolder]: For 244/250 co-relation queries the response was YES. [2021-03-26 03:48:13,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 66 events. 0/66 cut-off events. For 244/250 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 315 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-03-26 03:48:13,542 INFO L142 LiptonReduction]: Number of co-enabled transitions 36 [2021-03-26 03:48:13,544 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:13,544 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:13,544 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-26 03:48:13,545 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 27 transitions, 277 flow [2021-03-26 03:48:13,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,545 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:13,545 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:13,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-26 03:48:13,545 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:13,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:13,545 INFO L82 PathProgramCache]: Analyzing trace with hash 476805071, now seen corresponding path program 12 times [2021-03-26 03:48:13,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:13,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80269658] [2021-03-26 03:48:13,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:13,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:13,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:13,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:13,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:48:13,574 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:48:13,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:48:13,590 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-26 03:48:13,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 03:48:13,604 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-26 03:48:13,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 03:48:13,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:13,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80269658] [2021-03-26 03:48:13,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:13,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:48:13,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795871147] [2021-03-26 03:48:13,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:48:13,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:13,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:48:13,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:48:13,618 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-26 03:48:13,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 27 transitions, 277 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:13,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-26 03:48:13,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:13,657 INFO L129 PetriNetUnfolder]: 1/91 cut-off events. [2021-03-26 03:48:13,658 INFO L130 PetriNetUnfolder]: For 360/363 co-relation queries the response was YES. [2021-03-26 03:48:13,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 91 events. 1/91 cut-off events. For 360/363 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 519 event pairs, 1 based on Foata normal form. 1/91 useless extension candidates. Maximal degree in co-relation 341. Up to 20 conditions per place. [2021-03-26 03:48:13,658 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 16 selfloop transitions, 10 changer transitions 2/36 dead transitions. [2021-03-26 03:48:13,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 36 transitions, 442 flow [2021-03-26 03:48:13,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:48:13,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:48:13,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-26 03:48:13,659 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-26 03:48:13,660 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-26 03:48:13,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-26 03:48:13,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:13,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-26 03:48:13,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,661 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,661 INFO L185 Difference]: Start difference. First operand has 59 places, 27 transitions, 277 flow. Second operand 6 states and 188 transitions. [2021-03-26 03:48:13,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 36 transitions, 442 flow [2021-03-26 03:48:13,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 36 transitions, 420 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-26 03:48:13,664 INFO L241 Difference]: Finished difference. Result has 64 places, 29 transitions, 334 flow [2021-03-26 03:48:13,664 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=334, PETRI_PLACES=64, PETRI_TRANSITIONS=29} [2021-03-26 03:48:13,664 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2021-03-26 03:48:13,664 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:13,665 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 29 transitions, 334 flow [2021-03-26 03:48:13,665 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 29 transitions, 334 flow [2021-03-26 03:48:13,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 29 transitions, 334 flow [2021-03-26 03:48:13,672 INFO L129 PetriNetUnfolder]: 0/83 cut-off events. [2021-03-26 03:48:13,672 INFO L130 PetriNetUnfolder]: For 363/367 co-relation queries the response was YES. [2021-03-26 03:48:13,672 INFO L84 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 83 events. 0/83 cut-off events. For 363/367 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 457 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2021-03-26 03:48:13,673 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-26 03:48:13,674 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:13,674 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:13,674 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-03-26 03:48:13,678 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 29 transitions, 334 flow [2021-03-26 03:48:13,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,678 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:13,678 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:13,678 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-26 03:48:13,678 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:13,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:13,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1221507569, now seen corresponding path program 13 times [2021-03-26 03:48:13,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:13,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200170923] [2021-03-26 03:48:13,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:13,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:13,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:13,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:13,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:48:13,706 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:48:13,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:48:13,727 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-26 03:48:13,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 03:48:13,745 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-26 03:48:13,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 03:48:13,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:13,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200170923] [2021-03-26 03:48:13,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:13,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:48:13,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439362669] [2021-03-26 03:48:13,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:48:13,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:13,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:48:13,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:48:13,762 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-26 03:48:13,763 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 29 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,763 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:13,763 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-26 03:48:13,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:13,798 INFO L129 PetriNetUnfolder]: 1/84 cut-off events. [2021-03-26 03:48:13,798 INFO L130 PetriNetUnfolder]: For 384/384 co-relation queries the response was YES. [2021-03-26 03:48:13,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 84 events. 1/84 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 458 event pairs, 0 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 344. Up to 19 conditions per place. [2021-03-26 03:48:13,799 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 18 selfloop transitions, 10 changer transitions 2/38 dead transitions. [2021-03-26 03:48:13,799 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 38 transitions, 506 flow [2021-03-26 03:48:13,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:48:13,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:48:13,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-26 03:48:13,800 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-26 03:48:13,800 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-26 03:48:13,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-26 03:48:13,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:13,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-26 03:48:13,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,802 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,802 INFO L185 Difference]: Start difference. First operand has 63 places, 29 transitions, 334 flow. Second operand 6 states and 188 transitions. [2021-03-26 03:48:13,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 38 transitions, 506 flow [2021-03-26 03:48:13,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 38 transitions, 485 flow, removed 7 selfloop flow, removed 3 redundant places. [2021-03-26 03:48:13,805 INFO L241 Difference]: Finished difference. Result has 69 places, 31 transitions, 389 flow [2021-03-26 03:48:13,805 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=389, PETRI_PLACES=69, PETRI_TRANSITIONS=31} [2021-03-26 03:48:13,805 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 43 predicate places. [2021-03-26 03:48:13,805 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:13,805 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 31 transitions, 389 flow [2021-03-26 03:48:13,806 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 31 transitions, 389 flow [2021-03-26 03:48:13,806 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 31 transitions, 389 flow [2021-03-26 03:48:13,811 INFO L129 PetriNetUnfolder]: 0/76 cut-off events. [2021-03-26 03:48:13,811 INFO L130 PetriNetUnfolder]: For 420/426 co-relation queries the response was YES. [2021-03-26 03:48:13,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 76 events. 0/76 cut-off events. For 420/426 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 390 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-03-26 03:48:13,812 INFO L142 LiptonReduction]: Number of co-enabled transitions 44 [2021-03-26 03:48:13,814 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:13,814 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:13,814 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-03-26 03:48:13,814 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 31 transitions, 389 flow [2021-03-26 03:48:13,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,815 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:13,815 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:13,815 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-26 03:48:13,815 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:13,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:13,815 INFO L82 PathProgramCache]: Analyzing trace with hash 2080382099, now seen corresponding path program 14 times [2021-03-26 03:48:13,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:13,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673531923] [2021-03-26 03:48:13,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:13,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:13,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:13,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:13,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:48:13,833 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:48:13,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:48:13,849 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-26 03:48:13,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 03:48:13,864 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-26 03:48:13,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 03:48:13,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:13,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673531923] [2021-03-26 03:48:13,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:13,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:48:13,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443801437] [2021-03-26 03:48:13,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:48:13,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:13,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:48:13,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:48:13,879 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-26 03:48:13,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 31 transitions, 389 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:13,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-26 03:48:13,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:13,912 INFO L129 PetriNetUnfolder]: 1/77 cut-off events. [2021-03-26 03:48:13,913 INFO L130 PetriNetUnfolder]: For 436/436 co-relation queries the response was YES. [2021-03-26 03:48:13,913 INFO L84 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 77 events. 1/77 cut-off events. For 436/436 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 396 event pairs, 0 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 338. Up to 19 conditions per place. [2021-03-26 03:48:13,913 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 16 selfloop transitions, 9 changer transitions 3/36 dead transitions. [2021-03-26 03:48:13,913 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 36 transitions, 504 flow [2021-03-26 03:48:13,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:48:13,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:48:13,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-03-26 03:48:13,914 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2021-03-26 03:48:13,915 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-03-26 03:48:13,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-03-26 03:48:13,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:13,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-03-26 03:48:13,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,916 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,916 INFO L185 Difference]: Start difference. First operand has 68 places, 31 transitions, 389 flow. Second operand 6 states and 187 transitions. [2021-03-26 03:48:13,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 36 transitions, 504 flow [2021-03-26 03:48:13,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 36 transitions, 485 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-26 03:48:13,919 INFO L241 Difference]: Finished difference. Result has 72 places, 30 transitions, 392 flow [2021-03-26 03:48:13,920 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=392, PETRI_PLACES=72, PETRI_TRANSITIONS=30} [2021-03-26 03:48:13,920 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2021-03-26 03:48:13,920 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:13,920 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 30 transitions, 392 flow [2021-03-26 03:48:13,920 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 30 transitions, 392 flow [2021-03-26 03:48:13,921 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 30 transitions, 392 flow [2021-03-26 03:48:13,925 INFO L129 PetriNetUnfolder]: 0/68 cut-off events. [2021-03-26 03:48:13,926 INFO L130 PetriNetUnfolder]: For 401/406 co-relation queries the response was YES. [2021-03-26 03:48:13,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 68 events. 0/68 cut-off events. For 401/406 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 323 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-03-26 03:48:13,926 INFO L142 LiptonReduction]: Number of co-enabled transitions 36 [2021-03-26 03:48:13,928 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:13,928 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:13,928 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-26 03:48:13,928 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 30 transitions, 392 flow [2021-03-26 03:48:13,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,929 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:13,929 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:13,929 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-26 03:48:13,929 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:13,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:13,929 INFO L82 PathProgramCache]: Analyzing trace with hash -618143921, now seen corresponding path program 15 times [2021-03-26 03:48:13,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:13,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474054746] [2021-03-26 03:48:13,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:13,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:13,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:13,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:13,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:48:13,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:13,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:48:13,957 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-26 03:48:13,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 03:48:13,972 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-26 03:48:13,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 03:48:13,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:13,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474054746] [2021-03-26 03:48:13,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:13,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:48:13,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624331056] [2021-03-26 03:48:13,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:48:13,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:13,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:48:13,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:48:13,986 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-26 03:48:13,987 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 30 transitions, 392 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:13,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:13,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-26 03:48:13,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:14,032 INFO L129 PetriNetUnfolder]: 0/83 cut-off events. [2021-03-26 03:48:14,032 INFO L130 PetriNetUnfolder]: For 513/513 co-relation queries the response was YES. [2021-03-26 03:48:14,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 83 events. 0/83 cut-off events. For 513/513 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 447 event pairs, 0 based on Foata normal form. 1/83 useless extension candidates. Maximal degree in co-relation 0. Up to 17 conditions per place. [2021-03-26 03:48:14,033 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 18 selfloop transitions, 10 changer transitions 2/38 dead transitions. [2021-03-26 03:48:14,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 38 transitions, 571 flow [2021-03-26 03:48:14,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:48:14,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:48:14,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-26 03:48:14,034 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-26 03:48:14,034 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-26 03:48:14,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-26 03:48:14,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:14,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-26 03:48:14,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,035 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,036 INFO L185 Difference]: Start difference. First operand has 70 places, 30 transitions, 392 flow. Second operand 6 states and 188 transitions. [2021-03-26 03:48:14,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 38 transitions, 571 flow [2021-03-26 03:48:14,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 38 transitions, 539 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-26 03:48:14,039 INFO L241 Difference]: Finished difference. Result has 75 places, 33 transitions, 467 flow [2021-03-26 03:48:14,039 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=467, PETRI_PLACES=75, PETRI_TRANSITIONS=33} [2021-03-26 03:48:14,039 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 49 predicate places. [2021-03-26 03:48:14,039 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:14,039 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 33 transitions, 467 flow [2021-03-26 03:48:14,040 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 33 transitions, 467 flow [2021-03-26 03:48:14,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 74 places, 33 transitions, 467 flow [2021-03-26 03:48:14,045 INFO L129 PetriNetUnfolder]: 0/77 cut-off events. [2021-03-26 03:48:14,046 INFO L130 PetriNetUnfolder]: For 495/496 co-relation queries the response was YES. [2021-03-26 03:48:14,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 77 events. 0/77 cut-off events. For 495/496 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 399 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-03-26 03:48:14,046 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 03:48:14,048 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:14,048 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:14,048 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-03-26 03:48:14,050 INFO L480 AbstractCegarLoop]: Abstraction has has 74 places, 33 transitions, 467 flow [2021-03-26 03:48:14,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,050 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:14,050 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:14,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-26 03:48:14,050 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:14,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:14,050 INFO L82 PathProgramCache]: Analyzing trace with hash -79698959, now seen corresponding path program 16 times [2021-03-26 03:48:14,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:14,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803011860] [2021-03-26 03:48:14,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:14,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:14,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:14,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:14,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:48:14,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:14,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:48:14,085 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-26 03:48:14,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 03:48:14,115 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-26 03:48:14,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 03:48:14,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:14,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803011860] [2021-03-26 03:48:14,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:14,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:48:14,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759908718] [2021-03-26 03:48:14,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:48:14,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:14,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:48:14,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:48:14,132 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-26 03:48:14,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 33 transitions, 467 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:14,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-26 03:48:14,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:14,174 INFO L129 PetriNetUnfolder]: 0/76 cut-off events. [2021-03-26 03:48:14,174 INFO L130 PetriNetUnfolder]: For 519/521 co-relation queries the response was YES. [2021-03-26 03:48:14,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 76 events. 0/76 cut-off events. For 519/521 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 390 event pairs, 0 based on Foata normal form. 1/77 useless extension candidates. Maximal degree in co-relation 0. Up to 18 conditions per place. [2021-03-26 03:48:14,174 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 16 selfloop transitions, 11 changer transitions 2/37 dead transitions. [2021-03-26 03:48:14,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 37 transitions, 564 flow [2021-03-26 03:48:14,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:48:14,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:48:14,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-26 03:48:14,176 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-26 03:48:14,176 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-26 03:48:14,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-26 03:48:14,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:14,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-26 03:48:14,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,178 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,178 INFO L185 Difference]: Start difference. First operand has 74 places, 33 transitions, 467 flow. Second operand 6 states and 188 transitions. [2021-03-26 03:48:14,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 37 transitions, 564 flow [2021-03-26 03:48:14,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 37 transitions, 551 flow, removed 4 selfloop flow, removed 3 redundant places. [2021-03-26 03:48:14,182 INFO L241 Difference]: Finished difference. Result has 78 places, 32 transitions, 466 flow [2021-03-26 03:48:14,182 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=466, PETRI_PLACES=78, PETRI_TRANSITIONS=32} [2021-03-26 03:48:14,182 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 52 predicate places. [2021-03-26 03:48:14,182 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:14,183 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 32 transitions, 466 flow [2021-03-26 03:48:14,185 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 32 transitions, 466 flow [2021-03-26 03:48:14,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 76 places, 32 transitions, 466 flow [2021-03-26 03:48:14,195 INFO L129 PetriNetUnfolder]: 0/70 cut-off events. [2021-03-26 03:48:14,195 INFO L130 PetriNetUnfolder]: For 550/553 co-relation queries the response was YES. [2021-03-26 03:48:14,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 70 events. 0/70 cut-off events. For 550/553 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 336 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-03-26 03:48:14,196 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-26 03:48:14,198 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:14,198 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:14,198 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-03-26 03:48:14,199 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 32 transitions, 466 flow [2021-03-26 03:48:14,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,199 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:14,199 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:14,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-26 03:48:14,200 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:14,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:14,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1798042665, now seen corresponding path program 17 times [2021-03-26 03:48:14,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:14,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560320492] [2021-03-26 03:48:14,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:14,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:14,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:14,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:14,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:48:14,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:14,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:48:14,237 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:48:14,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:48:14,256 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-26 03:48:14,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 03:48:14,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:14,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560320492] [2021-03-26 03:48:14,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:14,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:48:14,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724632992] [2021-03-26 03:48:14,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:48:14,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:14,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:48:14,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:48:14,275 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-26 03:48:14,275 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 32 transitions, 466 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:14,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-26 03:48:14,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:14,325 INFO L129 PetriNetUnfolder]: 0/69 cut-off events. [2021-03-26 03:48:14,325 INFO L130 PetriNetUnfolder]: For 582/588 co-relation queries the response was YES. [2021-03-26 03:48:14,326 INFO L84 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 69 events. 0/69 cut-off events. For 582/588 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 332 event pairs, 0 based on Foata normal form. 3/72 useless extension candidates. Maximal degree in co-relation 0. Up to 18 conditions per place. [2021-03-26 03:48:14,326 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 14 selfloop transitions, 8 changer transitions 4/34 dead transitions. [2021-03-26 03:48:14,326 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 34 transitions, 540 flow [2021-03-26 03:48:14,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:48:14,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:48:14,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2021-03-26 03:48:14,328 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7948717948717948 [2021-03-26 03:48:14,328 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 186 transitions. [2021-03-26 03:48:14,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 186 transitions. [2021-03-26 03:48:14,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:14,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 186 transitions. [2021-03-26 03:48:14,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,330 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,330 INFO L185 Difference]: Start difference. First operand has 76 places, 32 transitions, 466 flow. Second operand 6 states and 186 transitions. [2021-03-26 03:48:14,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 34 transitions, 540 flow [2021-03-26 03:48:14,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 34 transitions, 501 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-26 03:48:14,335 INFO L241 Difference]: Finished difference. Result has 78 places, 29 transitions, 400 flow [2021-03-26 03:48:14,335 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=400, PETRI_PLACES=78, PETRI_TRANSITIONS=29} [2021-03-26 03:48:14,335 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 52 predicate places. [2021-03-26 03:48:14,335 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:14,336 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 29 transitions, 400 flow [2021-03-26 03:48:14,336 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 29 transitions, 400 flow [2021-03-26 03:48:14,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 75 places, 29 transitions, 400 flow [2021-03-26 03:48:14,342 INFO L129 PetriNetUnfolder]: 0/61 cut-off events. [2021-03-26 03:48:14,342 INFO L130 PetriNetUnfolder]: For 385/385 co-relation queries the response was YES. [2021-03-26 03:48:14,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 61 events. 0/61 cut-off events. For 385/385 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 269 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-03-26 03:48:14,343 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-26 03:48:14,344 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:14,344 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:14,345 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-03-26 03:48:14,345 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 29 transitions, 400 flow [2021-03-26 03:48:14,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,345 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:14,345 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:14,345 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-26 03:48:14,346 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:14,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:14,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1632985331, now seen corresponding path program 18 times [2021-03-26 03:48:14,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:14,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932220804] [2021-03-26 03:48:14,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:14,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:14,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:14,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:14,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:48:14,382 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-26 03:48:14,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 03:48:14,392 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:48:14,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:48:14,407 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-26 03:48:14,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 03:48:14,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:14,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932220804] [2021-03-26 03:48:14,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:14,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:48:14,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042643305] [2021-03-26 03:48:14,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:48:14,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:14,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:48:14,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:48:14,423 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-26 03:48:14,423 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 29 transitions, 400 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:14,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-26 03:48:14,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:14,475 INFO L129 PetriNetUnfolder]: 0/60 cut-off events. [2021-03-26 03:48:14,475 INFO L130 PetriNetUnfolder]: For 402/402 co-relation queries the response was YES. [2021-03-26 03:48:14,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 60 events. 0/60 cut-off events. For 402/402 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 264 event pairs, 0 based on Foata normal form. 1/61 useless extension candidates. Maximal degree in co-relation 0. Up to 13 conditions per place. [2021-03-26 03:48:14,476 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 15 selfloop transitions, 8 changer transitions 2/33 dead transitions. [2021-03-26 03:48:14,476 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 33 transitions, 485 flow [2021-03-26 03:48:14,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:48:14,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:48:14,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-26 03:48:14,477 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-26 03:48:14,477 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-26 03:48:14,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-26 03:48:14,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:14,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-26 03:48:14,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,480 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,480 INFO L185 Difference]: Start difference. First operand has 75 places, 29 transitions, 400 flow. Second operand 6 states and 188 transitions. [2021-03-26 03:48:14,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 33 transitions, 485 flow [2021-03-26 03:48:14,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 33 transitions, 446 flow, removed 4 selfloop flow, removed 6 redundant places. [2021-03-26 03:48:14,484 INFO L241 Difference]: Finished difference. Result has 77 places, 29 transitions, 389 flow [2021-03-26 03:48:14,484 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=389, PETRI_PLACES=77, PETRI_TRANSITIONS=29} [2021-03-26 03:48:14,484 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 51 predicate places. [2021-03-26 03:48:14,484 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:14,484 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 29 transitions, 389 flow [2021-03-26 03:48:14,484 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 29 transitions, 389 flow [2021-03-26 03:48:14,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 76 places, 29 transitions, 389 flow [2021-03-26 03:48:14,489 INFO L129 PetriNetUnfolder]: 0/54 cut-off events. [2021-03-26 03:48:14,490 INFO L130 PetriNetUnfolder]: For 334/334 co-relation queries the response was YES. [2021-03-26 03:48:14,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 54 events. 0/54 cut-off events. For 334/334 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 218 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-03-26 03:48:14,490 INFO L142 LiptonReduction]: Number of co-enabled transitions 28 [2021-03-26 03:48:14,492 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:14,492 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:14,492 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-26 03:48:14,492 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 29 transitions, 389 flow [2021-03-26 03:48:14,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,493 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:14,493 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:14,493 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-26 03:48:14,493 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:14,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:14,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1346663061, now seen corresponding path program 19 times [2021-03-26 03:48:14,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:14,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495088773] [2021-03-26 03:48:14,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:14,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:14,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:14,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:14,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:48:14,523 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-26 03:48:14,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 03:48:14,533 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-26 03:48:14,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 03:48:14,547 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-26 03:48:14,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 03:48:14,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:14,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495088773] [2021-03-26 03:48:14,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:14,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:48:14,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603876057] [2021-03-26 03:48:14,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:48:14,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:14,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:48:14,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:48:14,561 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-26 03:48:14,561 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 29 transitions, 389 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:14,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-26 03:48:14,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:14,592 INFO L129 PetriNetUnfolder]: 0/53 cut-off events. [2021-03-26 03:48:14,593 INFO L130 PetriNetUnfolder]: For 353/353 co-relation queries the response was YES. [2021-03-26 03:48:14,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 53 events. 0/53 cut-off events. For 353/353 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 208 event pairs, 0 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 0. Up to 13 conditions per place. [2021-03-26 03:48:14,593 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 13 selfloop transitions, 7 changer transitions 3/31 dead transitions. [2021-03-26 03:48:14,593 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 31 transitions, 443 flow [2021-03-26 03:48:14,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:48:14,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:48:14,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-03-26 03:48:14,594 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2021-03-26 03:48:14,594 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-03-26 03:48:14,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-03-26 03:48:14,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:14,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-03-26 03:48:14,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,595 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,595 INFO L185 Difference]: Start difference. First operand has 76 places, 29 transitions, 389 flow. Second operand 6 states and 187 transitions. [2021-03-26 03:48:14,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 31 transitions, 443 flow [2021-03-26 03:48:14,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 31 transitions, 433 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-03-26 03:48:14,598 INFO L241 Difference]: Finished difference. Result has 80 places, 26 transitions, 345 flow [2021-03-26 03:48:14,598 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=345, PETRI_PLACES=80, PETRI_TRANSITIONS=26} [2021-03-26 03:48:14,598 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 54 predicate places. [2021-03-26 03:48:14,598 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:14,599 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 26 transitions, 345 flow [2021-03-26 03:48:14,599 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 26 transitions, 345 flow [2021-03-26 03:48:14,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 78 places, 26 transitions, 345 flow [2021-03-26 03:48:14,603 INFO L129 PetriNetUnfolder]: 0/46 cut-off events. [2021-03-26 03:48:14,603 INFO L130 PetriNetUnfolder]: For 288/289 co-relation queries the response was YES. [2021-03-26 03:48:14,603 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 46 events. 0/46 cut-off events. For 288/289 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 164 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-03-26 03:48:14,603 INFO L142 LiptonReduction]: Number of co-enabled transitions 28 [2021-03-26 03:48:14,605 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:14,605 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:14,605 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-26 03:48:14,605 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 26 transitions, 345 flow [2021-03-26 03:48:14,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,605 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:14,605 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:14,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-26 03:48:14,606 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:14,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:14,606 INFO L82 PathProgramCache]: Analyzing trace with hash -897088213, now seen corresponding path program 20 times [2021-03-26 03:48:14,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:14,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661206503] [2021-03-26 03:48:14,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:14,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:14,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:14,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:14,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:48:14,624 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:48:14,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:48:14,641 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-26 03:48:14,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 03:48:14,654 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-26 03:48:14,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 03:48:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:14,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661206503] [2021-03-26 03:48:14,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:14,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:48:14,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167949506] [2021-03-26 03:48:14,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:48:14,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:14,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:48:14,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:48:14,669 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-26 03:48:14,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 26 transitions, 345 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:14,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-26 03:48:14,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:14,700 INFO L129 PetriNetUnfolder]: 0/45 cut-off events. [2021-03-26 03:48:14,700 INFO L130 PetriNetUnfolder]: For 306/306 co-relation queries the response was YES. [2021-03-26 03:48:14,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 45 events. 0/45 cut-off events. For 306/306 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 156 event pairs, 0 based on Foata normal form. 1/46 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-03-26 03:48:14,700 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 9 selfloop transitions, 7 changer transitions 3/27 dead transitions. [2021-03-26 03:48:14,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 27 transitions, 387 flow [2021-03-26 03:48:14,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:48:14,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:48:14,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2021-03-26 03:48:14,701 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7948717948717948 [2021-03-26 03:48:14,701 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 186 transitions. [2021-03-26 03:48:14,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 186 transitions. [2021-03-26 03:48:14,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:14,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 186 transitions. [2021-03-26 03:48:14,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,702 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,703 INFO L185 Difference]: Start difference. First operand has 78 places, 26 transitions, 345 flow. Second operand 6 states and 186 transitions. [2021-03-26 03:48:14,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 27 transitions, 387 flow [2021-03-26 03:48:14,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 27 transitions, 366 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-03-26 03:48:14,705 INFO L241 Difference]: Finished difference. Result has 79 places, 23 transitions, 286 flow [2021-03-26 03:48:14,705 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=79, PETRI_TRANSITIONS=23} [2021-03-26 03:48:14,705 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 53 predicate places. [2021-03-26 03:48:14,706 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:14,706 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 23 transitions, 286 flow [2021-03-26 03:48:14,706 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 23 transitions, 286 flow [2021-03-26 03:48:14,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 23 transitions, 286 flow [2021-03-26 03:48:14,709 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-03-26 03:48:14,709 INFO L130 PetriNetUnfolder]: For 227/228 co-relation queries the response was YES. [2021-03-26 03:48:14,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 38 events. 0/38 cut-off events. For 227/228 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-26 03:48:14,710 INFO L142 LiptonReduction]: Number of co-enabled transitions 18 [2021-03-26 03:48:14,711 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:14,711 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:14,711 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-26 03:48:14,711 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 23 transitions, 286 flow [2021-03-26 03:48:14,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,711 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:14,712 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:14,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-26 03:48:14,712 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:14,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:14,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1445521453, now seen corresponding path program 21 times [2021-03-26 03:48:14,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:14,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950141932] [2021-03-26 03:48:14,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:14,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:14,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:14,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:14,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:48:14,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:14,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:48:14,745 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:48:14,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:48:14,760 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-26 03:48:14,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 03:48:14,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:14,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950141932] [2021-03-26 03:48:14,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:14,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:48:14,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513548255] [2021-03-26 03:48:14,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:48:14,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:14,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:48:14,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:48:14,775 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-26 03:48:14,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 23 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:14,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-26 03:48:14,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:14,814 INFO L129 PetriNetUnfolder]: 0/37 cut-off events. [2021-03-26 03:48:14,814 INFO L130 PetriNetUnfolder]: For 244/246 co-relation queries the response was YES. [2021-03-26 03:48:14,814 INFO L84 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 37 events. 0/37 cut-off events. For 244/246 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 101 event pairs, 0 based on Foata normal form. 2/39 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-03-26 03:48:14,814 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 8 selfloop transitions, 4 changer transitions 4/24 dead transitions. [2021-03-26 03:48:14,815 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 24 transitions, 322 flow [2021-03-26 03:48:14,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:48:14,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:48:14,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2021-03-26 03:48:14,815 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7948717948717948 [2021-03-26 03:48:14,816 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 186 transitions. [2021-03-26 03:48:14,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 186 transitions. [2021-03-26 03:48:14,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:14,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 186 transitions. [2021-03-26 03:48:14,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,817 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,817 INFO L185 Difference]: Start difference. First operand has 73 places, 23 transitions, 286 flow. Second operand 6 states and 186 transitions. [2021-03-26 03:48:14,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 24 transitions, 322 flow [2021-03-26 03:48:14,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 24 transitions, 267 flow, removed 4 selfloop flow, removed 11 redundant places. [2021-03-26 03:48:14,819 INFO L241 Difference]: Finished difference. Result has 68 places, 19 transitions, 187 flow [2021-03-26 03:48:14,819 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=68, PETRI_TRANSITIONS=19} [2021-03-26 03:48:14,819 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 42 predicate places. [2021-03-26 03:48:14,819 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:14,819 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 19 transitions, 187 flow [2021-03-26 03:48:14,819 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 19 transitions, 187 flow [2021-03-26 03:48:14,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 19 transitions, 187 flow [2021-03-26 03:48:14,822 INFO L129 PetriNetUnfolder]: 0/29 cut-off events. [2021-03-26 03:48:14,822 INFO L130 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2021-03-26 03:48:14,822 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 29 events. 0/29 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-26 03:48:14,822 INFO L142 LiptonReduction]: Number of co-enabled transitions 10 [2021-03-26 03:48:14,823 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:14,823 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:14,823 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-03-26 03:48:14,823 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 19 transitions, 187 flow [2021-03-26 03:48:14,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,824 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:14,824 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:14,824 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-26 03:48:14,824 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:14,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:14,824 INFO L82 PathProgramCache]: Analyzing trace with hash 244298485, now seen corresponding path program 22 times [2021-03-26 03:48:14,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:14,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542711620] [2021-03-26 03:48:14,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:14,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:14,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:14,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:14,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:48:14,842 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-26 03:48:14,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 03:48:14,854 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:48:14,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:48:14,869 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-26 03:48:14,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 03:48:14,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:14,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542711620] [2021-03-26 03:48:14,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:14,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:48:14,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762170632] [2021-03-26 03:48:14,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:48:14,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:14,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:48:14,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:48:14,884 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-26 03:48:14,884 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 19 transitions, 187 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,884 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:14,884 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-26 03:48:14,884 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:14,919 INFO L129 PetriNetUnfolder]: 0/28 cut-off events. [2021-03-26 03:48:14,919 INFO L130 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2021-03-26 03:48:14,919 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 28 events. 0/28 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 52 event pairs, 0 based on Foata normal form. 1/29 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-03-26 03:48:14,919 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 5 selfloop transitions, 3 changer transitions 3/19 dead transitions. [2021-03-26 03:48:14,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 19 transitions, 209 flow [2021-03-26 03:48:14,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:48:14,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:48:14,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2021-03-26 03:48:14,920 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.782051282051282 [2021-03-26 03:48:14,920 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 183 transitions. [2021-03-26 03:48:14,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 183 transitions. [2021-03-26 03:48:14,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:14,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 183 transitions. [2021-03-26 03:48:14,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.5) internal successors, (183), 6 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,922 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,922 INFO L185 Difference]: Start difference. First operand has 61 places, 19 transitions, 187 flow. Second operand 6 states and 183 transitions. [2021-03-26 03:48:14,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 19 transitions, 209 flow [2021-03-26 03:48:14,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 19 transitions, 162 flow, removed 3 selfloop flow, removed 12 redundant places. [2021-03-26 03:48:14,923 INFO L241 Difference]: Finished difference. Result has 55 places, 16 transitions, 111 flow [2021-03-26 03:48:14,923 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=111, PETRI_PLACES=55, PETRI_TRANSITIONS=16} [2021-03-26 03:48:14,925 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 29 predicate places. [2021-03-26 03:48:14,925 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:14,925 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 16 transitions, 111 flow [2021-03-26 03:48:14,925 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 16 transitions, 111 flow [2021-03-26 03:48:14,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 50 places, 16 transitions, 111 flow [2021-03-26 03:48:14,927 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-26 03:48:14,927 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-03-26 03:48:14,927 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 21 events. 0/21 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 22 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 03:48:14,927 INFO L142 LiptonReduction]: Number of co-enabled transitions 8 [2021-03-26 03:48:14,928 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:14,928 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:14,928 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3 [2021-03-26 03:48:14,929 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 16 transitions, 111 flow [2021-03-26 03:48:14,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,929 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:14,929 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:14,929 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-26 03:48:14,929 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:14,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:14,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1958479669, now seen corresponding path program 23 times [2021-03-26 03:48:14,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:14,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132776458] [2021-03-26 03:48:14,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:14,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:14,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:14,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:14,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:48:14,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:14,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:48:14,957 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:48:14,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:48:14,970 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-26 03:48:14,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 03:48:14,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:14,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132776458] [2021-03-26 03:48:14,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:14,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:48:14,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807040882] [2021-03-26 03:48:14,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:48:14,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:14,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:48:14,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:48:14,986 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-26 03:48:14,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 16 transitions, 111 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:14,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:14,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-26 03:48:14,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:15,019 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-26 03:48:15,019 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2021-03-26 03:48:15,019 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 20 events. 0/20 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 0 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 03:48:15,019 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 3 selfloop transitions, 2 changer transitions 3/16 dead transitions. [2021-03-26 03:48:15,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 16 transitions, 127 flow [2021-03-26 03:48:15,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:48:15,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:48:15,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2021-03-26 03:48:15,020 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2021-03-26 03:48:15,020 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 182 transitions. [2021-03-26 03:48:15,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 182 transitions. [2021-03-26 03:48:15,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:15,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 182 transitions. [2021-03-26 03:48:15,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:15,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:15,021 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:15,021 INFO L185 Difference]: Start difference. First operand has 50 places, 16 transitions, 111 flow. Second operand 6 states and 182 transitions. [2021-03-26 03:48:15,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 16 transitions, 127 flow [2021-03-26 03:48:15,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 16 transitions, 100 flow, removed 4 selfloop flow, removed 8 redundant places. [2021-03-26 03:48:15,022 INFO L241 Difference]: Finished difference. Result has 48 places, 13 transitions, 61 flow [2021-03-26 03:48:15,023 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=61, PETRI_PLACES=48, PETRI_TRANSITIONS=13} [2021-03-26 03:48:15,023 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 22 predicate places. [2021-03-26 03:48:15,023 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:15,023 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 13 transitions, 61 flow [2021-03-26 03:48:15,023 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 13 transitions, 61 flow [2021-03-26 03:48:15,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 13 transitions, 61 flow [2021-03-26 03:48:15,024 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-03-26 03:48:15,025 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-26 03:48:15,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 13 events. 0/13 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 03:48:15,025 INFO L142 LiptonReduction]: Number of co-enabled transitions 4 [2021-03-26 03:48:15,025 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:15,025 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:15,025 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-26 03:48:15,026 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 13 transitions, 61 flow [2021-03-26 03:48:15,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:15,026 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:48:15,026 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:48:15,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-26 03:48:15,032 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:48:15,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:48:15,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1484748849, now seen corresponding path program 24 times [2021-03-26 03:48:15,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:48:15,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925536717] [2021-03-26 03:48:15,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:48:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:48:15,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:15,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:48:15,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:15,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:48:15,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:48:15,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 03:48:15,056 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 03:48:15,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 03:48:15,082 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-26 03:48:15,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 03:48:15,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:48:15,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925536717] [2021-03-26 03:48:15,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:48:15,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 03:48:15,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366736619] [2021-03-26 03:48:15,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 03:48:15,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:48:15,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 03:48:15,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 03:48:15,097 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-26 03:48:15,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 13 transitions, 61 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:15,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:48:15,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-26 03:48:15,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:48:15,126 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-26 03:48:15,126 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-26 03:48:15,127 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 12 events. 0/12 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 03:48:15,127 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2021-03-26 03:48:15,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 12 transitions, 65 flow [2021-03-26 03:48:15,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 03:48:15,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 03:48:15,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2021-03-26 03:48:15,127 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7649572649572649 [2021-03-26 03:48:15,127 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 179 transitions. [2021-03-26 03:48:15,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 179 transitions. [2021-03-26 03:48:15,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:48:15,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 179 transitions. [2021-03-26 03:48:15,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:15,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:15,129 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:15,129 INFO L185 Difference]: Start difference. First operand has 40 places, 13 transitions, 61 flow. Second operand 6 states and 179 transitions. [2021-03-26 03:48:15,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 12 transitions, 65 flow [2021-03-26 03:48:15,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 12 transitions, 51 flow, removed 2 selfloop flow, removed 7 redundant places. [2021-03-26 03:48:15,130 INFO L241 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2021-03-26 03:48:15,130 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2021-03-26 03:48:15,130 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2021-03-26 03:48:15,130 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:48:15,130 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 0 transitions, 0 flow [2021-03-26 03:48:15,130 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 0 transitions, 0 flow [2021-03-26 03:48:15,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 03:48:15,130 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 03:48:15,130 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:48:15,131 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-26 03:48:15,131 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 03:48:15,131 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:48:15,131 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:48:15,131 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-26 03:48:15,131 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 03:48:15,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:48:15,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-26 03:48:15,137 INFO L202 PluginConnector]: Adding new model example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 03:48:15 BasicIcfg [2021-03-26 03:48:15,137 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 03:48:15,138 INFO L168 Benchmark]: Toolchain (without parser) took 4408.04 ms. Allocated memory was 255.9 MB in the beginning and 444.6 MB in the end (delta: 188.7 MB). Free memory was 236.7 MB in the beginning and 408.7 MB in the end (delta: -172.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.0 GB. [2021-03-26 03:48:15,138 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 03:48:15,138 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.15 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 03:48:15,138 INFO L168 Benchmark]: Boogie Preprocessor took 14.44 ms. Allocated memory is still 255.9 MB. Free memory was 235.0 MB in the beginning and 234.2 MB in the end (delta: 799.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 03:48:15,138 INFO L168 Benchmark]: RCFGBuilder took 191.39 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 239.1 MB in the end (delta: -4.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.0 GB. [2021-03-26 03:48:15,138 INFO L168 Benchmark]: TraceAbstraction took 4173.35 ms. Allocated memory was 255.9 MB in the beginning and 444.6 MB in the end (delta: 188.7 MB). Free memory was 238.4 MB in the beginning and 408.7 MB in the end (delta: -170.3 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.0 GB. [2021-03-26 03:48:15,140 INFO L339 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 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.15 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.44 ms. Allocated memory is still 255.9 MB. Free memory was 235.0 MB in the beginning and 234.2 MB in the end (delta: 799.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 191.39 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 239.1 MB in the end (delta: -4.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4173.35 ms. Allocated memory was 255.9 MB in the beginning and 444.6 MB in the end (delta: 188.7 MB). Free memory was 238.4 MB in the beginning and 408.7 MB in the end (delta: -170.3 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 110.4ms, 30 PlacesBefore, 26 PlacesAfterwards, 29 TransitionsBefore, 25 TransitionsAfterwards, 216 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 66 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 66, positive: 66, positive conditional: 66, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 66, positive: 66, positive conditional: 0, positive unconditional: 66, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 66, positive: 66, positive conditional: 0, positive unconditional: 66, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 66, positive: 66, positive conditional: 0, positive unconditional: 66, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 66, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 66, unknown conditional: 66, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19.0ms, 20 PlacesBefore, 20 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 90 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.6ms, 21 PlacesBefore, 21 PlacesAfterwards, 22 TransitionsBefore, 22 TransitionsAfterwards, 62 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.4ms, 22 PlacesBefore, 22 PlacesAfterwards, 13 TransitionsBefore, 13 TransitionsAfterwards, 36 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.9ms, 30 PlacesBefore, 29 PlacesAfterwards, 15 TransitionsBefore, 15 TransitionsAfterwards, 38 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.5ms, 36 PlacesBefore, 35 PlacesAfterwards, 19 TransitionsBefore, 19 TransitionsAfterwards, 42 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.9ms, 42 PlacesBefore, 41 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 52 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19.7ms, 48 PlacesBefore, 47 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 60 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.3ms, 53 PlacesBefore, 52 PlacesAfterwards, 27 TransitionsBefore, 27 TransitionsAfterwards, 56 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.1ms, 56 PlacesBefore, 55 PlacesAfterwards, 29 TransitionsBefore, 29 TransitionsAfterwards, 64 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.3ms, 60 PlacesBefore, 57 PlacesAfterwards, 27 TransitionsBefore, 27 TransitionsAfterwards, 50 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.4ms, 54 PlacesBefore, 52 PlacesAfterwards, 27 TransitionsBefore, 27 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.9ms, 55 PlacesBefore, 54 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 46 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.1ms, 58 PlacesBefore, 56 PlacesAfterwards, 25 TransitionsBefore, 25 TransitionsAfterwards, 36 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.6ms, 60 PlacesBefore, 59 PlacesAfterwards, 27 TransitionsBefore, 27 TransitionsAfterwards, 36 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.6ms, 64 PlacesBefore, 63 PlacesAfterwards, 29 TransitionsBefore, 29 TransitionsAfterwards, 42 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.3ms, 69 PlacesBefore, 68 PlacesAfterwards, 31 TransitionsBefore, 31 TransitionsAfterwards, 44 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.6ms, 72 PlacesBefore, 70 PlacesAfterwards, 30 TransitionsBefore, 30 TransitionsAfterwards, 36 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.5ms, 75 PlacesBefore, 74 PlacesAfterwards, 33 TransitionsBefore, 33 TransitionsAfterwards, 38 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.8ms, 78 PlacesBefore, 76 PlacesAfterwards, 32 TransitionsBefore, 32 TransitionsAfterwards, 38 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.7ms, 78 PlacesBefore, 75 PlacesAfterwards, 29 TransitionsBefore, 29 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.4ms, 77 PlacesBefore, 76 PlacesAfterwards, 29 TransitionsBefore, 29 TransitionsAfterwards, 28 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.9ms, 80 PlacesBefore, 78 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 28 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9ms, 79 PlacesBefore, 73 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 18 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.6ms, 68 PlacesBefore, 61 PlacesAfterwards, 19 TransitionsBefore, 19 TransitionsAfterwards, 10 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7ms, 55 PlacesBefore, 50 PlacesAfterwards, 16 TransitionsBefore, 16 TransitionsAfterwards, 8 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1ms, 48 PlacesBefore, 40 PlacesAfterwards, 13 TransitionsBefore, 13 TransitionsAfterwards, 4 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6ms, 37 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 8.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4086.6ms, OverallIterations: 27, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1396.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 188.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 197 SDtfs, 247 SDslu, 128 SDs, 0 SdLazy, 358 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 266.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1401.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=467occurred in iteration=18, InterpolantAutomatonStates: 153, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.1ms SsaConstructionTime, 93.1ms SatisfiabilityAnalysisTime, 1795.5ms InterpolantComputationTime, 351 NumberOfCodeBlocks, 351 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 324 ConstructedInterpolants, 0 QuantifiedInterpolants, 4346 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...