/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/fork_loop_noop.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 03:26:30,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 03:26:30,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 03:26:30,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-26 03:26:30,546 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 03:26:30,561 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 03:26:30,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 03:26:30,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 03:26:30,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 03:26:30,562 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 03:26:30,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 03:26:30,563 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 03:26:30,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 03:26:30,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 03:26:30,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 03:26:30,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 03:26:30,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 03:26:30,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 03:26:30,564 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 03:26:30,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 03:26:30,564 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 03:26:30,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 03:26:30,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 03:26:30,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 03:26:30,564 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 03:26:30,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 03:26:30,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 03:26:30,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 03:26:30,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 03:26:30,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 03:26:30,565 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 03:26:30,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 03:26:30,566 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 03:26:30,566 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 03:26:30,566 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 03:26:30,566 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 03:26:30,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 03:26:30,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 03:26:30,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 03:26:30,813 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-26 03:26:30,813 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-26 03:26:30,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_noop.bpl [2021-03-26 03:26:30,815 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_noop.bpl' [2021-03-26 03:26:30,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 03:26:30,844 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-26 03:26:30,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 03:26:30,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 03:26:30,845 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 03:26:30,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:26:30" (1/1) ... [2021-03-26 03:26:30,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:26:30" (1/1) ... [2021-03-26 03:26:30,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 03:26:30,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 03:26:30,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 03:26:30,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 03:26:30,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:26:30" (1/1) ... [2021-03-26 03:26:30,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:26:30" (1/1) ... [2021-03-26 03:26:30,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:26:30" (1/1) ... [2021-03-26 03:26:30,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:26:30" (1/1) ... [2021-03-26 03:26:30,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:26:30" (1/1) ... [2021-03-26 03:26:30,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:26:30" (1/1) ... [2021-03-26 03:26:30,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:26:30" (1/1) ... [2021-03-26 03:26:30,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 03:26:30,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 03:26:30,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 03:26:30,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 03:26:30,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:26:30" (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 03:26:30,932 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-26 03:26:30,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 03:26:30,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 03:26:30,934 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread given in one single declaration [2021-03-26 03:26:30,934 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-03-26 03:26:30,934 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-03-26 03:26:30,935 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 03:26:31,022 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 03:26:31,022 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-03-26 03:26:31,024 INFO L202 PluginConnector]: Adding new model fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 03:26:31 BoogieIcfgContainer [2021-03-26 03:26:31,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 03:26:31,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 03:26:31,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 03:26:31,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 03:26:31,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:26:30" (1/2) ... [2021-03-26 03:26:31,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfbc03a and model type fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 03:26:31, skipping insertion in model container [2021-03-26 03:26:31,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 03:26:31" (2/2) ... [2021-03-26 03:26:31,029 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_loop_noop.bpl [2021-03-26 03:26:31,045 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 03:26:31,048 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 03:26:31,048 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 03:26:31,071 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:31,083 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:31,105 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:31,106 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:31,106 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:31,106 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:31,106 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:31,106 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:31,106 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:31,106 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:31,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 11 places, 8 transitions, 21 flow [2021-03-26 03:26:31,120 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-26 03:26:31,120 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16 conditions, 11 events. 0/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 19 event pairs, 0 based on Foata normal form. 0/9 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 03:26:31,121 INFO L82 GeneralOperation]: Start removeDead. Operand has 11 places, 8 transitions, 21 flow [2021-03-26 03:26:31,123 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 9 places, 6 transitions, 17 flow [2021-03-26 03:26:31,124 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:31,132 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 9 places, 6 transitions, 17 flow [2021-03-26 03:26:31,134 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 9 places, 6 transitions, 17 flow [2021-03-26 03:26:31,134 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 9 places, 6 transitions, 17 flow [2021-03-26 03:26:31,136 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-26 03:26:31,136 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12 conditions, 7 events. 0/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 8 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 03:26:31,136 INFO L142 LiptonReduction]: Number of co-enabled transitions 8 [2021-03-26 03:26:31,150 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-26 03:26:31,150 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 03:26:31,152 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 28 [2021-03-26 03:26:31,156 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:26:31,156 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,156 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:31,157 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:31,157 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:31,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:31,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1315, now seen corresponding path program 1 times [2021-03-26 03:26:31,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:31,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495475539] [2021-03-26 03:26:31,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:31,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:31,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:31,239 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 03:26:31,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495475539] [2021-03-26 03:26:31,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:31,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:31,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950975542] [2021-03-26 03:26:31,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:31,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:31,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:31,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:31,253 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 9 [2021-03-26 03:26:31,254 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 8 places, 5 transitions, 15 flow. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 03:26:31,254 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:31,254 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 9 [2021-03-26 03:26:31,255 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:31,258 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2021-03-26 03:26:31,258 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,258 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11 conditions, 4 events. 0/4 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 2/6 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 03:26:31,259 INFO L132 encePairwiseOnDemand]: 7/9 looper letters, 0 selfloop transitions, 1 changer transitions 0/4 dead transitions. [2021-03-26 03:26:31,259 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 9 places, 4 transitions, 15 flow [2021-03-26 03:26:31,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:31,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:31,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 20 transitions. [2021-03-26 03:26:31,264 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7407407407407407 [2021-03-26 03:26:31,265 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 20 transitions. [2021-03-26 03:26:31,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 20 transitions. [2021-03-26 03:26:31,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:31,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 20 transitions. [2021-03-26 03:26:31,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 03:26:31,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 03:26:31,269 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 03:26:31,270 INFO L185 Difference]: Start difference. First operand has 8 places, 5 transitions, 15 flow. Second operand 3 states and 20 transitions. [2021-03-26 03:26:31,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 9 places, 4 transitions, 15 flow [2021-03-26 03:26:31,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 4 transitions, 15 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:31,272 INFO L241 Difference]: Finished difference. Result has 9 places, 4 transitions, 15 flow [2021-03-26 03:26:31,273 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=9, PETRI_DIFFERENCE_MINUEND_FLOW=13, PETRI_DIFFERENCE_MINUEND_PLACES=7, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=15, PETRI_PLACES=9, PETRI_TRANSITIONS=4} [2021-03-26 03:26:31,274 INFO L343 CegarLoopForPetriNet]: 8 programPoint places, 1 predicate places. [2021-03-26 03:26:31,274 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:31,274 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 9 places, 4 transitions, 15 flow [2021-03-26 03:26:31,274 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 9 places, 4 transitions, 15 flow [2021-03-26 03:26:31,275 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 9 places, 4 transitions, 15 flow [2021-03-26 03:26:31,276 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2021-03-26 03:26:31,276 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11 conditions, 4 events. 0/4 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 0/4 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 03:26:31,276 INFO L142 LiptonReduction]: Number of co-enabled transitions 2 [2021-03-26 03:26:31,276 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:31,276 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:31,276 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-26 03:26:31,277 INFO L480 AbstractCegarLoop]: Abstraction has has 9 places, 4 transitions, 15 flow [2021-03-26 03:26:31,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 03:26:31,277 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:31,277 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2021-03-26 03:26:31,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 03:26:31,278 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:31,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:31,278 INFO L82 PathProgramCache]: Analyzing trace with hash 41033, now seen corresponding path program 1 times [2021-03-26 03:26:31,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:31,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791313617] [2021-03-26 03:26:31,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:31,281 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:31,282 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:31,290 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:31,290 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:31,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 03:26:31,291 WARN L342 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:31,291 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-03-26 03:26:31,295 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:31,295 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:31,296 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:31,297 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:31,297 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:31,297 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:31,297 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:31,297 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:31,297 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:31,297 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:31,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 16 places, 11 transitions, 34 flow [2021-03-26 03:26:31,300 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-26 03:26:31,300 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 38 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 03:26:31,300 INFO L82 GeneralOperation]: Start removeDead. Operand has 16 places, 11 transitions, 34 flow [2021-03-26 03:26:31,300 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 14 places, 9 transitions, 30 flow [2021-03-26 03:26:31,301 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:31,301 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 14 places, 9 transitions, 30 flow [2021-03-26 03:26:31,301 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 14 places, 9 transitions, 30 flow [2021-03-26 03:26:31,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 14 places, 9 transitions, 30 flow [2021-03-26 03:26:31,303 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-26 03:26:31,303 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 11 events. 0/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 11 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 03:26:31,303 INFO L142 LiptonReduction]: Number of co-enabled transitions 28 [2021-03-26 03:26:31,326 INFO L154 LiptonReduction]: Checked pairs total: 9 [2021-03-26 03:26:31,326 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 03:26:31,326 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 25 [2021-03-26 03:26:31,327 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:26:31,327 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,327 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:31,327 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:31,328 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:31,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:31,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1699, now seen corresponding path program 1 times [2021-03-26 03:26:31,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:31,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158451173] [2021-03-26 03:26:31,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:31,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:31,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:31,335 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 03:26:31,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158451173] [2021-03-26 03:26:31,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:31,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:31,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517754792] [2021-03-26 03:26:31,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:31,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:31,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:31,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:31,336 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 13 [2021-03-26 03:26:31,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 7 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 03:26:31,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:31,337 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 13 [2021-03-26 03:26:31,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:31,338 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-26 03:26:31,339 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 6 events. 0/6 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 3/9 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 03:26:31,339 INFO L132 encePairwiseOnDemand]: 11/13 looper letters, 0 selfloop transitions, 1 changer transitions 0/6 dead transitions. [2021-03-26 03:26:31,339 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 6 transitions, 26 flow [2021-03-26 03:26:31,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:31,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:31,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2021-03-26 03:26:31,339 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8205128205128205 [2021-03-26 03:26:31,340 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 32 transitions. [2021-03-26 03:26:31,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 32 transitions. [2021-03-26 03:26:31,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:31,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 32 transitions. [2021-03-26 03:26:31,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 03:26:31,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 03:26:31,341 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 03:26:31,341 INFO L185 Difference]: Start difference. First operand has 12 places, 7 transitions, 26 flow. Second operand 3 states and 32 transitions. [2021-03-26 03:26:31,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 6 transitions, 26 flow [2021-03-26 03:26:31,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 6 transitions, 24 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:31,341 INFO L241 Difference]: Finished difference. Result has 13 places, 6 transitions, 24 flow [2021-03-26 03:26:31,342 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=24, PETRI_PLACES=13, PETRI_TRANSITIONS=6} [2021-03-26 03:26:31,342 INFO L343 CegarLoopForPetriNet]: 12 programPoint places, 1 predicate places. [2021-03-26 03:26:31,342 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:31,342 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 13 places, 6 transitions, 24 flow [2021-03-26 03:26:31,342 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 13 places, 6 transitions, 24 flow [2021-03-26 03:26:31,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 13 places, 6 transitions, 24 flow [2021-03-26 03:26:31,343 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-26 03:26:31,343 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 6 events. 0/6 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 0/6 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 03:26:31,344 INFO L142 LiptonReduction]: Number of co-enabled transitions 8 [2021-03-26 03:26:31,344 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:31,344 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:31,344 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-26 03:26:31,345 INFO L480 AbstractCegarLoop]: Abstraction has has 13 places, 6 transitions, 24 flow [2021-03-26 03:26:31,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 03:26:31,345 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:31,345 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-03-26 03:26:31,345 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 03:26:31,345 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:31,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:31,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1643499, now seen corresponding path program 1 times [2021-03-26 03:26:31,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:31,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798122882] [2021-03-26 03:26:31,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:31,348 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:31,350 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:31,351 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:31,351 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:31,351 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 03:26:31,351 WARN L342 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:31,360 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-03-26 03:26:31,371 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:31,371 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:31,372 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:31,372 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:31,372 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:31,372 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:31,372 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:31,373 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:31,373 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:31,373 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:31,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 14 transitions, 49 flow [2021-03-26 03:26:31,376 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2021-03-26 03:26:31,376 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 23 events. 0/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 65 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-26 03:26:31,376 INFO L82 GeneralOperation]: Start removeDead. Operand has 21 places, 14 transitions, 49 flow [2021-03-26 03:26:31,377 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 19 places, 12 transitions, 45 flow [2021-03-26 03:26:31,377 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:31,377 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 19 places, 12 transitions, 45 flow [2021-03-26 03:26:31,377 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 19 places, 12 transitions, 45 flow [2021-03-26 03:26:31,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 19 places, 12 transitions, 45 flow [2021-03-26 03:26:31,379 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-26 03:26:31,379 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,380 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 15 events. 0/15 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-26 03:26:31,380 INFO L142 LiptonReduction]: Number of co-enabled transitions 60 [2021-03-26 03:26:31,455 INFO L154 LiptonReduction]: Checked pairs total: 21 [2021-03-26 03:26:31,455 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 03:26:31,455 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 78 [2021-03-26 03:26:31,460 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:26:31,460 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,460 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:31,460 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:31,461 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:31,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:31,461 INFO L82 PathProgramCache]: Analyzing trace with hash 2211, now seen corresponding path program 1 times [2021-03-26 03:26:31,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:31,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336001465] [2021-03-26 03:26:31,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:31,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:31,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:31,480 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 03:26:31,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336001465] [2021-03-26 03:26:31,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:31,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:31,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426317815] [2021-03-26 03:26:31,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:31,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:31,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:31,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:31,482 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 17 [2021-03-26 03:26:31,482 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 9 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 03:26:31,482 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:31,482 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 17 [2021-03-26 03:26:31,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:31,484 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-03-26 03:26:31,484 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 8 events. 0/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 4/12 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-26 03:26:31,485 INFO L132 encePairwiseOnDemand]: 15/17 looper letters, 0 selfloop transitions, 1 changer transitions 0/8 dead transitions. [2021-03-26 03:26:31,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 8 transitions, 39 flow [2021-03-26 03:26:31,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:31,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:31,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2021-03-26 03:26:31,485 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8627450980392157 [2021-03-26 03:26:31,485 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 44 transitions. [2021-03-26 03:26:31,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 44 transitions. [2021-03-26 03:26:31,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:31,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 44 transitions. [2021-03-26 03:26:31,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 03:26:31,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 03:26:31,487 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 03:26:31,487 INFO L185 Difference]: Start difference. First operand has 16 places, 9 transitions, 39 flow. Second operand 3 states and 44 transitions. [2021-03-26 03:26:31,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 8 transitions, 39 flow [2021-03-26 03:26:31,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 8 transitions, 33 flow, removed 3 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:31,488 INFO L241 Difference]: Finished difference. Result has 17 places, 8 transitions, 33 flow [2021-03-26 03:26:31,488 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=33, PETRI_PLACES=17, PETRI_TRANSITIONS=8} [2021-03-26 03:26:31,488 INFO L343 CegarLoopForPetriNet]: 16 programPoint places, 1 predicate places. [2021-03-26 03:26:31,488 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:31,488 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 8 transitions, 33 flow [2021-03-26 03:26:31,488 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 8 transitions, 33 flow [2021-03-26 03:26:31,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 8 transitions, 33 flow [2021-03-26 03:26:31,490 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-03-26 03:26:31,490 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 8 events. 0/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 0/8 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-26 03:26:31,490 INFO L142 LiptonReduction]: Number of co-enabled transitions 18 [2021-03-26 03:26:31,491 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:31,491 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:31,491 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3 [2021-03-26 03:26:31,492 INFO L480 AbstractCegarLoop]: Abstraction has has 17 places, 8 transitions, 33 flow [2021-03-26 03:26:31,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 03:26:31,492 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:31,492 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-26 03:26:31,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 03:26:31,492 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:31,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:31,493 INFO L82 PathProgramCache]: Analyzing trace with hash 66279044, now seen corresponding path program 1 times [2021-03-26 03:26:31,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:31,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568529992] [2021-03-26 03:26:31,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:31,496 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:31,497 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:31,498 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:31,498 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:31,499 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 03:26:31,499 WARN L342 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:31,499 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-03-26 03:26:31,505 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:31,505 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:31,506 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:31,506 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:31,506 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:31,507 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:31,507 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:31,507 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:31,507 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:31,507 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:31,507 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 17 transitions, 66 flow [2021-03-26 03:26:31,518 INFO L129 PetriNetUnfolder]: 0/29 cut-off events. [2021-03-26 03:26:31,519 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,519 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 91 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-26 03:26:31,519 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 17 transitions, 66 flow [2021-03-26 03:26:31,519 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 15 transitions, 62 flow [2021-03-26 03:26:31,519 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:31,519 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 15 transitions, 62 flow [2021-03-26 03:26:31,520 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 15 transitions, 62 flow [2021-03-26 03:26:31,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 15 transitions, 62 flow [2021-03-26 03:26:31,523 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-26 03:26:31,523 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 19 events. 0/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-26 03:26:31,523 INFO L142 LiptonReduction]: Number of co-enabled transitions 104 [2021-03-26 03:26:31,597 INFO L154 LiptonReduction]: Checked pairs total: 38 [2021-03-26 03:26:31,597 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-26 03:26:31,597 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 78 [2021-03-26 03:26:31,598 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:26:31,598 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,598 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:31,598 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:31,599 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:31,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:31,599 INFO L82 PathProgramCache]: Analyzing trace with hash 2851, now seen corresponding path program 1 times [2021-03-26 03:26:31,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:31,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554502908] [2021-03-26 03:26:31,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:31,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:31,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:31,608 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 03:26:31,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554502908] [2021-03-26 03:26:31,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:31,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:31,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238391253] [2021-03-26 03:26:31,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:31,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:31,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:31,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:31,609 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 21 [2021-03-26 03:26:31,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 11 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 03:26:31,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:31,609 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 21 [2021-03-26 03:26:31,609 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:31,612 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-26 03:26:31,612 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 10 events. 0/10 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 6 event pairs, 0 based on Foata normal form. 5/15 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-26 03:26:31,612 INFO L132 encePairwiseOnDemand]: 19/21 looper letters, 0 selfloop transitions, 1 changer transitions 0/10 dead transitions. [2021-03-26 03:26:31,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 10 transitions, 54 flow [2021-03-26 03:26:31,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:31,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:31,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2021-03-26 03:26:31,613 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2021-03-26 03:26:31,613 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 56 transitions. [2021-03-26 03:26:31,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 56 transitions. [2021-03-26 03:26:31,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:31,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 56 transitions. [2021-03-26 03:26:31,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 03:26:31,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 03:26:31,614 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 03:26:31,614 INFO L185 Difference]: Start difference. First operand has 20 places, 11 transitions, 54 flow. Second operand 3 states and 56 transitions. [2021-03-26 03:26:31,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 10 transitions, 54 flow [2021-03-26 03:26:31,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 10 transitions, 42 flow, removed 6 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:31,615 INFO L241 Difference]: Finished difference. Result has 21 places, 10 transitions, 42 flow [2021-03-26 03:26:31,616 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=21, PETRI_TRANSITIONS=10} [2021-03-26 03:26:31,616 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 1 predicate places. [2021-03-26 03:26:31,616 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:31,616 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 21 places, 10 transitions, 42 flow [2021-03-26 03:26:31,616 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 21 places, 10 transitions, 42 flow [2021-03-26 03:26:31,616 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 10 transitions, 42 flow [2021-03-26 03:26:31,618 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-26 03:26:31,618 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 10 events. 0/10 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. 0/10 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-26 03:26:31,618 INFO L142 LiptonReduction]: Number of co-enabled transitions 32 [2021-03-26 03:26:31,618 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:31,619 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:31,619 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3 [2021-03-26 03:26:31,619 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 10 transitions, 42 flow [2021-03-26 03:26:31,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 03:26:31,620 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:31,620 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-26 03:26:31,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 03:26:31,620 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:31,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:31,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1646739026, now seen corresponding path program 1 times [2021-03-26 03:26:31,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:31,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461349723] [2021-03-26 03:26:31,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:31,623 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:31,633 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:31,635 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:31,635 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:31,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 03:26:31,635 WARN L342 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:31,636 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-03-26 03:26:31,646 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:31,646 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:31,647 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:31,647 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:31,647 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:31,647 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:31,647 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:31,647 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:31,647 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:31,647 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:31,649 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 20 transitions, 85 flow [2021-03-26 03:26:31,663 INFO L129 PetriNetUnfolder]: 0/35 cut-off events. [2021-03-26 03:26:31,663 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,664 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 35 events. 0/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 111 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-03-26 03:26:31,664 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 20 transitions, 85 flow [2021-03-26 03:26:31,665 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 18 transitions, 81 flow [2021-03-26 03:26:31,665 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:31,665 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 18 transitions, 81 flow [2021-03-26 03:26:31,665 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 18 transitions, 81 flow [2021-03-26 03:26:31,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 18 transitions, 81 flow [2021-03-26 03:26:31,668 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2021-03-26 03:26:31,668 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 23 events. 0/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-03-26 03:26:31,669 INFO L142 LiptonReduction]: Number of co-enabled transitions 160 [2021-03-26 03:26:31,770 INFO L154 LiptonReduction]: Checked pairs total: 60 [2021-03-26 03:26:31,770 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 03:26:31,770 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 105 [2021-03-26 03:26:31,780 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:26:31,780 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,781 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:31,781 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:31,781 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:31,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:31,781 INFO L82 PathProgramCache]: Analyzing trace with hash 3619, now seen corresponding path program 1 times [2021-03-26 03:26:31,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:31,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63332480] [2021-03-26 03:26:31,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:31,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:31,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:31,795 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 03:26:31,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63332480] [2021-03-26 03:26:31,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:31,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:31,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709464305] [2021-03-26 03:26:31,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:31,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:31,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:31,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:31,796 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 25 [2021-03-26 03:26:31,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 13 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 03:26:31,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:31,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 25 [2021-03-26 03:26:31,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:31,799 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-26 03:26:31,799 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 12 events. 0/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 0 based on Foata normal form. 6/18 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-03-26 03:26:31,800 INFO L132 encePairwiseOnDemand]: 23/25 looper letters, 0 selfloop transitions, 1 changer transitions 0/12 dead transitions. [2021-03-26 03:26:31,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 12 transitions, 71 flow [2021-03-26 03:26:31,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:31,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:31,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2021-03-26 03:26:31,800 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9066666666666666 [2021-03-26 03:26:31,800 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 68 transitions. [2021-03-26 03:26:31,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 68 transitions. [2021-03-26 03:26:31,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:31,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 68 transitions. [2021-03-26 03:26:31,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 03:26:31,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 03:26:31,802 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 03:26:31,802 INFO L185 Difference]: Start difference. First operand has 24 places, 13 transitions, 71 flow. Second operand 3 states and 68 transitions. [2021-03-26 03:26:31,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 12 transitions, 71 flow [2021-03-26 03:26:31,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 12 transitions, 51 flow, removed 10 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:31,803 INFO L241 Difference]: Finished difference. Result has 25 places, 12 transitions, 51 flow [2021-03-26 03:26:31,803 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=51, PETRI_PLACES=25, PETRI_TRANSITIONS=12} [2021-03-26 03:26:31,803 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2021-03-26 03:26:31,803 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:31,803 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 12 transitions, 51 flow [2021-03-26 03:26:31,803 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 12 transitions, 51 flow [2021-03-26 03:26:31,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 25 places, 12 transitions, 51 flow [2021-03-26 03:26:31,805 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-26 03:26:31,805 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 12 events. 0/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-03-26 03:26:31,805 INFO L142 LiptonReduction]: Number of co-enabled transitions 50 [2021-03-26 03:26:31,806 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:31,806 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:31,806 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3 [2021-03-26 03:26:31,807 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 12 transitions, 51 flow [2021-03-26 03:26:31,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 03:26:31,807 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:31,807 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:31,807 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-26 03:26:31,807 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:31,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:31,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1085119695, now seen corresponding path program 1 times [2021-03-26 03:26:31,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:31,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529510858] [2021-03-26 03:26:31,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:31,810 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:31,812 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:31,812 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:31,812 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:31,813 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-26 03:26:31,813 WARN L342 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:31,813 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2021-03-26 03:26:31,819 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:31,819 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:31,820 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:31,820 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:31,820 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:31,820 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:31,820 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:31,820 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:31,820 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:31,820 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:31,821 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 23 transitions, 106 flow [2021-03-26 03:26:31,827 INFO L129 PetriNetUnfolder]: 0/41 cut-off events. [2021-03-26 03:26:31,828 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,828 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 41 events. 0/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 136 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-03-26 03:26:31,828 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 23 transitions, 106 flow [2021-03-26 03:26:31,828 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 21 transitions, 102 flow [2021-03-26 03:26:31,828 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:31,828 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 21 transitions, 102 flow [2021-03-26 03:26:31,828 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 21 transitions, 102 flow [2021-03-26 03:26:31,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 21 transitions, 102 flow [2021-03-26 03:26:31,831 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2021-03-26 03:26:31,831 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,831 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 27 events. 0/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 59 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-03-26 03:26:31,831 INFO L142 LiptonReduction]: Number of co-enabled transitions 228 [2021-03-26 03:26:31,943 INFO L154 LiptonReduction]: Checked pairs total: 87 [2021-03-26 03:26:31,944 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-26 03:26:31,944 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 116 [2021-03-26 03:26:31,945 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:26:31,945 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,945 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:31,945 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:31,945 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:31,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:31,945 INFO L82 PathProgramCache]: Analyzing trace with hash 4515, now seen corresponding path program 1 times [2021-03-26 03:26:31,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:31,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777009425] [2021-03-26 03:26:31,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:31,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:31,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:31,958 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 03:26:31,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777009425] [2021-03-26 03:26:31,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:31,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:31,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562628376] [2021-03-26 03:26:31,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:31,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:31,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:31,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:31,962 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 29 [2021-03-26 03:26:31,963 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 15 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 03:26:31,964 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:31,964 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 29 [2021-03-26 03:26:31,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:31,970 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-03-26 03:26:31,970 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,970 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 14 events. 0/14 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 7/21 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-03-26 03:26:31,971 INFO L132 encePairwiseOnDemand]: 27/29 looper letters, 0 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2021-03-26 03:26:31,971 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 14 transitions, 90 flow [2021-03-26 03:26:31,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:31,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:31,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2021-03-26 03:26:31,974 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9195402298850575 [2021-03-26 03:26:31,974 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 80 transitions. [2021-03-26 03:26:31,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 80 transitions. [2021-03-26 03:26:31,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:31,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 80 transitions. [2021-03-26 03:26:31,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 03:26:31,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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 03:26:31,978 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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 03:26:31,978 INFO L185 Difference]: Start difference. First operand has 28 places, 15 transitions, 90 flow. Second operand 3 states and 80 transitions. [2021-03-26 03:26:31,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 14 transitions, 90 flow [2021-03-26 03:26:31,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 14 transitions, 60 flow, removed 15 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:31,979 INFO L241 Difference]: Finished difference. Result has 29 places, 14 transitions, 60 flow [2021-03-26 03:26:31,979 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=29, PETRI_TRANSITIONS=14} [2021-03-26 03:26:31,979 INFO L343 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2021-03-26 03:26:31,980 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:31,980 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 14 transitions, 60 flow [2021-03-26 03:26:31,980 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 14 transitions, 60 flow [2021-03-26 03:26:31,980 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 14 transitions, 60 flow [2021-03-26 03:26:31,981 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-03-26 03:26:31,981 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:31,981 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 14 events. 0/14 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-03-26 03:26:31,981 INFO L142 LiptonReduction]: Number of co-enabled transitions 72 [2021-03-26 03:26:31,982 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:31,982 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:31,982 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-26 03:26:31,982 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 14 transitions, 60 flow [2021-03-26 03:26:31,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 03:26:31,983 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:31,983 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:31,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-26 03:26:31,983 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:31,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:31,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1719135375, now seen corresponding path program 1 times [2021-03-26 03:26:31,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:31,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198038905] [2021-03-26 03:26:31,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:31,986 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:31,987 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:31,988 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:31,989 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:31,989 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-26 03:26:31,989 WARN L342 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:31,989 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2021-03-26 03:26:31,995 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:31,995 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:31,996 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:31,996 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:31,996 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:31,996 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:31,996 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:31,996 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:31,996 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:31,996 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:31,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 26 transitions, 129 flow [2021-03-26 03:26:31,999 INFO L129 PetriNetUnfolder]: 0/47 cut-off events. [2021-03-26 03:26:32,000 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:32,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 47 events. 0/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 166 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-03-26 03:26:32,000 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 26 transitions, 129 flow [2021-03-26 03:26:32,000 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 24 transitions, 125 flow [2021-03-26 03:26:32,000 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:32,000 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 24 transitions, 125 flow [2021-03-26 03:26:32,000 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 24 transitions, 125 flow [2021-03-26 03:26:32,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 24 transitions, 125 flow [2021-03-26 03:26:32,002 INFO L129 PetriNetUnfolder]: 0/31 cut-off events. [2021-03-26 03:26:32,002 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:32,002 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 31 events. 0/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 86 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-03-26 03:26:32,003 INFO L142 LiptonReduction]: Number of co-enabled transitions 308 [2021-03-26 03:26:32,111 INFO L154 LiptonReduction]: Checked pairs total: 119 [2021-03-26 03:26:32,111 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-26 03:26:32,112 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 112 [2021-03-26 03:26:32,114 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:26:32,114 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:32,114 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:32,114 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:32,114 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:32,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:32,115 INFO L82 PathProgramCache]: Analyzing trace with hash 5539, now seen corresponding path program 1 times [2021-03-26 03:26:32,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:32,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983593137] [2021-03-26 03:26:32,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:32,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:32,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:32,124 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 03:26:32,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983593137] [2021-03-26 03:26:32,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:32,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:32,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816889098] [2021-03-26 03:26:32,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:32,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:32,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:32,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:32,125 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 33 [2021-03-26 03:26:32,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 17 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 03:26:32,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:32,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 33 [2021-03-26 03:26:32,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:32,129 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-26 03:26:32,129 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:32,129 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 16 events. 0/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 8/24 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-03-26 03:26:32,129 INFO L132 encePairwiseOnDemand]: 31/33 looper letters, 0 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2021-03-26 03:26:32,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 16 transitions, 111 flow [2021-03-26 03:26:32,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:32,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:32,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2021-03-26 03:26:32,130 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9292929292929293 [2021-03-26 03:26:32,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 92 transitions. [2021-03-26 03:26:32,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 92 transitions. [2021-03-26 03:26:32,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:32,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 92 transitions. [2021-03-26 03:26:32,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 03:26:32,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 03:26:32,133 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 03:26:32,133 INFO L185 Difference]: Start difference. First operand has 32 places, 17 transitions, 111 flow. Second operand 3 states and 92 transitions. [2021-03-26 03:26:32,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 16 transitions, 111 flow [2021-03-26 03:26:32,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 16 transitions, 69 flow, removed 21 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:32,136 INFO L241 Difference]: Finished difference. Result has 33 places, 16 transitions, 69 flow [2021-03-26 03:26:32,136 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=33, PETRI_TRANSITIONS=16} [2021-03-26 03:26:32,136 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2021-03-26 03:26:32,136 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:32,136 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 16 transitions, 69 flow [2021-03-26 03:26:32,136 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 16 transitions, 69 flow [2021-03-26 03:26:32,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 16 transitions, 69 flow [2021-03-26 03:26:32,139 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-26 03:26:32,139 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:32,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 16 events. 0/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-03-26 03:26:32,139 INFO L142 LiptonReduction]: Number of co-enabled transitions 98 [2021-03-26 03:26:32,140 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:32,140 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:32,140 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-03-26 03:26:32,141 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 16 transitions, 69 flow [2021-03-26 03:26:32,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 03:26:32,141 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:32,141 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:32,141 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-26 03:26:32,141 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:32,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:32,142 INFO L82 PathProgramCache]: Analyzing trace with hash 779611434, now seen corresponding path program 1 times [2021-03-26 03:26:32,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:32,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277896152] [2021-03-26 03:26:32,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:32,148 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:32,159 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:32,160 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:32,160 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:32,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-26 03:26:32,160 WARN L342 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:32,160 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2021-03-26 03:26:32,173 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:32,173 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:32,173 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:32,173 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:32,173 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:32,173 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:32,174 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:32,174 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:32,174 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:32,174 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:32,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 29 transitions, 154 flow [2021-03-26 03:26:32,182 INFO L129 PetriNetUnfolder]: 0/53 cut-off events. [2021-03-26 03:26:32,182 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:32,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 53 events. 0/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 191 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-03-26 03:26:32,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 29 transitions, 154 flow [2021-03-26 03:26:32,183 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 27 transitions, 150 flow [2021-03-26 03:26:32,183 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:32,183 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 27 transitions, 150 flow [2021-03-26 03:26:32,183 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 27 transitions, 150 flow [2021-03-26 03:26:32,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 27 transitions, 150 flow [2021-03-26 03:26:32,185 INFO L129 PetriNetUnfolder]: 0/35 cut-off events. [2021-03-26 03:26:32,185 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:32,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 35 events. 0/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-03-26 03:26:32,186 INFO L142 LiptonReduction]: Number of co-enabled transitions 400 [2021-03-26 03:26:32,316 INFO L154 LiptonReduction]: Checked pairs total: 156 [2021-03-26 03:26:32,317 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-26 03:26:32,317 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 134 [2021-03-26 03:26:32,317 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:26:32,318 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:32,318 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:32,318 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:32,318 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:32,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:32,318 INFO L82 PathProgramCache]: Analyzing trace with hash 6691, now seen corresponding path program 1 times [2021-03-26 03:26:32,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:32,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085655459] [2021-03-26 03:26:32,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:32,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:32,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:32,325 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 03:26:32,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085655459] [2021-03-26 03:26:32,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:32,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:32,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794483160] [2021-03-26 03:26:32,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:32,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:32,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:32,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:32,326 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 37 [2021-03-26 03:26:32,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 19 transitions, 134 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 03:26:32,326 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:32,326 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 37 [2021-03-26 03:26:32,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:32,329 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-26 03:26:32,329 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:32,329 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 18 events. 0/18 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 9/27 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-03-26 03:26:32,329 INFO L132 encePairwiseOnDemand]: 35/37 looper letters, 0 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2021-03-26 03:26:32,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 18 transitions, 134 flow [2021-03-26 03:26:32,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:32,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:32,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2021-03-26 03:26:32,329 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9369369369369369 [2021-03-26 03:26:32,330 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 104 transitions. [2021-03-26 03:26:32,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 104 transitions. [2021-03-26 03:26:32,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:32,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 104 transitions. [2021-03-26 03:26:32,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 03:26:32,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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 03:26:32,330 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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 03:26:32,331 INFO L185 Difference]: Start difference. First operand has 36 places, 19 transitions, 134 flow. Second operand 3 states and 104 transitions. [2021-03-26 03:26:32,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 18 transitions, 134 flow [2021-03-26 03:26:32,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 18 transitions, 78 flow, removed 28 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:32,332 INFO L241 Difference]: Finished difference. Result has 37 places, 18 transitions, 78 flow [2021-03-26 03:26:32,332 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=37, PETRI_TRANSITIONS=18} [2021-03-26 03:26:32,332 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2021-03-26 03:26:32,332 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:32,332 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 18 transitions, 78 flow [2021-03-26 03:26:32,332 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 18 transitions, 78 flow [2021-03-26 03:26:32,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 18 transitions, 78 flow [2021-03-26 03:26:32,334 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-26 03:26:32,334 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:32,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 18 events. 0/18 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-03-26 03:26:32,340 INFO L142 LiptonReduction]: Number of co-enabled transitions 128 [2021-03-26 03:26:32,341 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:32,341 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:32,341 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-03-26 03:26:32,342 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 18 transitions, 78 flow [2021-03-26 03:26:32,342 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 03:26:32,342 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:32,342 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:32,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-26 03:26:32,342 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:32,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:32,342 INFO L82 PathProgramCache]: Analyzing trace with hash -2053304524, now seen corresponding path program 1 times [2021-03-26 03:26:32,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:32,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975543277] [2021-03-26 03:26:32,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:32,345 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:32,346 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:32,347 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:32,347 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:32,348 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-26 03:26:32,348 WARN L342 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:32,348 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2021-03-26 03:26:32,356 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:32,356 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:32,356 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:32,356 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:32,356 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:32,356 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:32,356 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:32,356 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:32,356 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:32,356 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:32,357 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 32 transitions, 181 flow [2021-03-26 03:26:32,360 INFO L129 PetriNetUnfolder]: 0/59 cut-off events. [2021-03-26 03:26:32,360 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:32,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 59 events. 0/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 212 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-03-26 03:26:32,360 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 32 transitions, 181 flow [2021-03-26 03:26:32,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 30 transitions, 177 flow [2021-03-26 03:26:32,360 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:32,360 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 30 transitions, 177 flow [2021-03-26 03:26:32,360 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 30 transitions, 177 flow [2021-03-26 03:26:32,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 30 transitions, 177 flow [2021-03-26 03:26:32,362 INFO L129 PetriNetUnfolder]: 0/39 cut-off events. [2021-03-26 03:26:32,362 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:32,362 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 39 events. 0/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 100 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-03-26 03:26:32,363 INFO L142 LiptonReduction]: Number of co-enabled transitions 504 [2021-03-26 03:26:32,522 INFO L154 LiptonReduction]: Checked pairs total: 198 [2021-03-26 03:26:32,522 INFO L156 LiptonReduction]: Total number of compositions: 9 [2021-03-26 03:26:32,522 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 162 [2021-03-26 03:26:32,523 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:26:32,523 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:32,523 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:32,523 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:32,523 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:32,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:32,524 INFO L82 PathProgramCache]: Analyzing trace with hash 7971, now seen corresponding path program 1 times [2021-03-26 03:26:32,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:32,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276755583] [2021-03-26 03:26:32,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:32,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:32,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:32,530 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 03:26:32,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276755583] [2021-03-26 03:26:32,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:32,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:32,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289241871] [2021-03-26 03:26:32,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:32,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:32,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:32,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:32,531 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 41 [2021-03-26 03:26:32,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 21 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 03:26:32,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:32,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 41 [2021-03-26 03:26:32,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:32,533 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-26 03:26:32,534 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:32,534 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 20 events. 0/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 10/30 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-03-26 03:26:32,534 INFO L132 encePairwiseOnDemand]: 39/41 looper letters, 0 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2021-03-26 03:26:32,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 20 transitions, 159 flow [2021-03-26 03:26:32,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:32,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:32,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2021-03-26 03:26:32,534 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.943089430894309 [2021-03-26 03:26:32,534 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 116 transitions. [2021-03-26 03:26:32,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 116 transitions. [2021-03-26 03:26:32,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:32,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 116 transitions. [2021-03-26 03:26:32,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 03:26:32,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 03:26:32,535 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 03:26:32,535 INFO L185 Difference]: Start difference. First operand has 40 places, 21 transitions, 159 flow. Second operand 3 states and 116 transitions. [2021-03-26 03:26:32,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 20 transitions, 159 flow [2021-03-26 03:26:32,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 20 transitions, 87 flow, removed 36 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:32,536 INFO L241 Difference]: Finished difference. Result has 41 places, 20 transitions, 87 flow [2021-03-26 03:26:32,537 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=41, PETRI_TRANSITIONS=20} [2021-03-26 03:26:32,537 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2021-03-26 03:26:32,537 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:32,537 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 20 transitions, 87 flow [2021-03-26 03:26:32,537 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 20 transitions, 87 flow [2021-03-26 03:26:32,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 20 transitions, 87 flow [2021-03-26 03:26:32,538 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-26 03:26:32,538 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:32,539 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 20 events. 0/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-03-26 03:26:32,539 INFO L142 LiptonReduction]: Number of co-enabled transitions 162 [2021-03-26 03:26:32,539 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:32,539 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:32,540 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3 [2021-03-26 03:26:32,540 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 20 transitions, 87 flow [2021-03-26 03:26:32,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 03:26:32,540 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:32,540 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:32,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-26 03:26:32,540 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:32,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:32,540 INFO L82 PathProgramCache]: Analyzing trace with hash -607272555, now seen corresponding path program 1 times [2021-03-26 03:26:32,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:32,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646754399] [2021-03-26 03:26:32,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:32,543 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:32,545 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:32,546 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:32,546 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:32,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-26 03:26:32,546 WARN L342 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:32,546 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2021-03-26 03:26:32,555 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:32,556 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:32,556 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:32,556 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:32,556 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:32,556 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:32,556 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:32,556 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:32,556 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:32,556 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:32,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 56 places, 35 transitions, 210 flow [2021-03-26 03:26:32,560 INFO L129 PetriNetUnfolder]: 0/65 cut-off events. [2021-03-26 03:26:32,560 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:32,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 65 events. 0/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 234 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2021-03-26 03:26:32,560 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 35 transitions, 210 flow [2021-03-26 03:26:32,561 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 33 transitions, 206 flow [2021-03-26 03:26:32,561 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:32,561 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 33 transitions, 206 flow [2021-03-26 03:26:32,561 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 33 transitions, 206 flow [2021-03-26 03:26:32,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 33 transitions, 206 flow [2021-03-26 03:26:32,563 INFO L129 PetriNetUnfolder]: 0/43 cut-off events. [2021-03-26 03:26:32,563 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:32,563 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 43 events. 0/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 110 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2021-03-26 03:26:32,564 INFO L142 LiptonReduction]: Number of co-enabled transitions 620 [2021-03-26 03:26:32,792 INFO L154 LiptonReduction]: Checked pairs total: 245 [2021-03-26 03:26:32,793 INFO L156 LiptonReduction]: Total number of compositions: 10 [2021-03-26 03:26:32,793 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 232 [2021-03-26 03:26:32,794 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:26:32,794 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:32,794 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:32,794 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:32,794 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:32,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:32,794 INFO L82 PathProgramCache]: Analyzing trace with hash 9379, now seen corresponding path program 1 times [2021-03-26 03:26:32,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:32,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873369608] [2021-03-26 03:26:32,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:32,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:32,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:32,801 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 03:26:32,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873369608] [2021-03-26 03:26:32,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:32,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:32,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754050434] [2021-03-26 03:26:32,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:32,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:32,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:32,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:32,804 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 45 [2021-03-26 03:26:32,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 23 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 03:26:32,804 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:32,804 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 45 [2021-03-26 03:26:32,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:32,808 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-03-26 03:26:32,808 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:32,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 22 events. 0/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 11/33 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2021-03-26 03:26:32,808 INFO L132 encePairwiseOnDemand]: 43/45 looper letters, 0 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2021-03-26 03:26:32,808 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 22 transitions, 186 flow [2021-03-26 03:26:32,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:32,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:32,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2021-03-26 03:26:32,809 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9481481481481482 [2021-03-26 03:26:32,809 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 128 transitions. [2021-03-26 03:26:32,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 128 transitions. [2021-03-26 03:26:32,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:32,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 128 transitions. [2021-03-26 03:26:32,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 03:26:32,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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 03:26:32,809 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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 03:26:32,810 INFO L185 Difference]: Start difference. First operand has 44 places, 23 transitions, 186 flow. Second operand 3 states and 128 transitions. [2021-03-26 03:26:32,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 22 transitions, 186 flow [2021-03-26 03:26:32,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 22 transitions, 96 flow, removed 45 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:32,812 INFO L241 Difference]: Finished difference. Result has 45 places, 22 transitions, 96 flow [2021-03-26 03:26:32,812 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, 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=96, PETRI_PLACES=45, PETRI_TRANSITIONS=22} [2021-03-26 03:26:32,812 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2021-03-26 03:26:32,812 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:32,812 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 22 transitions, 96 flow [2021-03-26 03:26:32,812 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 22 transitions, 96 flow [2021-03-26 03:26:32,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 22 transitions, 96 flow [2021-03-26 03:26:32,814 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-03-26 03:26:32,814 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:32,814 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 22 events. 0/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2021-03-26 03:26:32,814 INFO L142 LiptonReduction]: Number of co-enabled transitions 200 [2021-03-26 03:26:32,816 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:32,816 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:32,816 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-03-26 03:26:32,818 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 22 transitions, 96 flow [2021-03-26 03:26:32,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 03:26:32,818 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:32,818 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:32,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-26 03:26:32,818 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:32,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:32,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1208304905, now seen corresponding path program 1 times [2021-03-26 03:26:32,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:32,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71762923] [2021-03-26 03:26:32,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:32,821 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:32,823 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:32,824 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:32,824 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:32,824 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-26 03:26:32,824 WARN L342 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:32,824 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2021-03-26 03:26:32,834 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:32,834 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:32,835 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:32,835 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:32,835 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:32,835 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:32,835 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:32,835 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:32,835 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:32,835 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:32,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 38 transitions, 241 flow [2021-03-26 03:26:32,838 INFO L129 PetriNetUnfolder]: 0/71 cut-off events. [2021-03-26 03:26:32,838 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:32,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 71 events. 0/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 257 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2021-03-26 03:26:32,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 38 transitions, 241 flow [2021-03-26 03:26:32,839 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 36 transitions, 237 flow [2021-03-26 03:26:32,839 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:32,839 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 36 transitions, 237 flow [2021-03-26 03:26:32,839 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 36 transitions, 237 flow [2021-03-26 03:26:32,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 36 transitions, 237 flow [2021-03-26 03:26:32,841 INFO L129 PetriNetUnfolder]: 0/47 cut-off events. [2021-03-26 03:26:32,841 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:32,841 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 47 events. 0/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 142 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2021-03-26 03:26:32,842 INFO L142 LiptonReduction]: Number of co-enabled transitions 748 [2021-03-26 03:26:33,070 INFO L154 LiptonReduction]: Checked pairs total: 297 [2021-03-26 03:26:33,070 INFO L156 LiptonReduction]: Total number of compositions: 11 [2021-03-26 03:26:33,070 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 231 [2021-03-26 03:26:33,071 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:26:33,071 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:33,071 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:33,071 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:33,071 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:33,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:33,072 INFO L82 PathProgramCache]: Analyzing trace with hash 10915, now seen corresponding path program 1 times [2021-03-26 03:26:33,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:33,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969412087] [2021-03-26 03:26:33,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:33,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:33,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:33,081 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 03:26:33,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969412087] [2021-03-26 03:26:33,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:33,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:33,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678064816] [2021-03-26 03:26:33,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:33,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:33,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:33,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:33,082 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 49 [2021-03-26 03:26:33,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 25 transitions, 215 flow. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 03:26:33,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:33,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 49 [2021-03-26 03:26:33,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:33,086 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-03-26 03:26:33,086 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:33,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 24 events. 0/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 12/36 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2021-03-26 03:26:33,086 INFO L132 encePairwiseOnDemand]: 47/49 looper letters, 0 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2021-03-26 03:26:33,086 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 24 transitions, 215 flow [2021-03-26 03:26:33,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:33,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:33,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2021-03-26 03:26:33,087 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9523809523809523 [2021-03-26 03:26:33,087 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 140 transitions. [2021-03-26 03:26:33,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 140 transitions. [2021-03-26 03:26:33,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:33,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 140 transitions. [2021-03-26 03:26:33,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 03:26:33,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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 03:26:33,088 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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 03:26:33,088 INFO L185 Difference]: Start difference. First operand has 48 places, 25 transitions, 215 flow. Second operand 3 states and 140 transitions. [2021-03-26 03:26:33,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 24 transitions, 215 flow [2021-03-26 03:26:33,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 24 transitions, 105 flow, removed 55 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:33,089 INFO L241 Difference]: Finished difference. Result has 49 places, 24 transitions, 105 flow [2021-03-26 03:26:33,089 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=47, 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=105, PETRI_PLACES=49, PETRI_TRANSITIONS=24} [2021-03-26 03:26:33,089 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 1 predicate places. [2021-03-26 03:26:33,089 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:33,089 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 24 transitions, 105 flow [2021-03-26 03:26:33,089 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 24 transitions, 105 flow [2021-03-26 03:26:33,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 24 transitions, 105 flow [2021-03-26 03:26:33,091 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-03-26 03:26:33,091 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:33,091 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 24 events. 0/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2021-03-26 03:26:33,091 INFO L142 LiptonReduction]: Number of co-enabled transitions 242 [2021-03-26 03:26:33,092 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:33,092 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:33,092 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3 [2021-03-26 03:26:33,092 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 24 transitions, 105 flow [2021-03-26 03:26:33,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 03:26:33,092 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:33,093 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:33,093 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-26 03:26:33,093 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:33,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:33,093 INFO L82 PathProgramCache]: Analyzing trace with hash 941462544, now seen corresponding path program 1 times [2021-03-26 03:26:33,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:33,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960819576] [2021-03-26 03:26:33,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:33,098 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:33,102 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:33,104 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:33,104 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:33,105 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-26 03:26:33,105 WARN L342 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:33,107 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2021-03-26 03:26:33,117 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:33,118 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:33,118 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:33,118 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:33,118 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:33,118 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:33,118 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:33,118 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:33,118 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:33,118 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:33,119 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 41 transitions, 274 flow [2021-03-26 03:26:33,124 INFO L129 PetriNetUnfolder]: 0/77 cut-off events. [2021-03-26 03:26:33,124 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:33,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 77 events. 0/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 294 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 0. Up to 13 conditions per place. [2021-03-26 03:26:33,124 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 41 transitions, 274 flow [2021-03-26 03:26:33,125 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 39 transitions, 270 flow [2021-03-26 03:26:33,125 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:33,126 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 39 transitions, 270 flow [2021-03-26 03:26:33,126 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 39 transitions, 270 flow [2021-03-26 03:26:33,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 39 transitions, 270 flow [2021-03-26 03:26:33,129 INFO L129 PetriNetUnfolder]: 0/51 cut-off events. [2021-03-26 03:26:33,129 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:33,129 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 51 events. 0/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 153 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 0. Up to 13 conditions per place. [2021-03-26 03:26:33,129 INFO L142 LiptonReduction]: Number of co-enabled transitions 888 [2021-03-26 03:26:33,353 INFO L154 LiptonReduction]: Checked pairs total: 354 [2021-03-26 03:26:33,353 INFO L156 LiptonReduction]: Total number of compositions: 12 [2021-03-26 03:26:33,353 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 228 [2021-03-26 03:26:33,354 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:26:33,354 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:33,354 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:33,354 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:33,354 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:33,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:33,355 INFO L82 PathProgramCache]: Analyzing trace with hash 12579, now seen corresponding path program 1 times [2021-03-26 03:26:33,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:33,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355872920] [2021-03-26 03:26:33,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:33,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:33,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:33,361 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 03:26:33,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355872920] [2021-03-26 03:26:33,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:33,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:33,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414275302] [2021-03-26 03:26:33,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:33,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:33,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:33,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:33,362 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 53 [2021-03-26 03:26:33,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 27 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 03:26:33,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:33,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 53 [2021-03-26 03:26:33,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:33,365 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-03-26 03:26:33,365 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:33,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 26 events. 0/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 13/39 useless extension candidates. Maximal degree in co-relation 0. Up to 13 conditions per place. [2021-03-26 03:26:33,365 INFO L132 encePairwiseOnDemand]: 51/53 looper letters, 0 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2021-03-26 03:26:33,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 26 transitions, 246 flow [2021-03-26 03:26:33,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:33,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:33,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2021-03-26 03:26:33,365 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9559748427672956 [2021-03-26 03:26:33,365 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 152 transitions. [2021-03-26 03:26:33,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 152 transitions. [2021-03-26 03:26:33,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:33,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 152 transitions. [2021-03-26 03:26:33,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 03:26:33,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 03:26:33,366 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 03:26:33,366 INFO L185 Difference]: Start difference. First operand has 52 places, 27 transitions, 246 flow. Second operand 3 states and 152 transitions. [2021-03-26 03:26:33,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 26 transitions, 246 flow [2021-03-26 03:26:33,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 26 transitions, 114 flow, removed 66 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:33,368 INFO L241 Difference]: Finished difference. Result has 53 places, 26 transitions, 114 flow [2021-03-26 03:26:33,368 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=53, PETRI_TRANSITIONS=26} [2021-03-26 03:26:33,368 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2021-03-26 03:26:33,368 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:33,368 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 26 transitions, 114 flow [2021-03-26 03:26:33,368 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 26 transitions, 114 flow [2021-03-26 03:26:33,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 26 transitions, 114 flow [2021-03-26 03:26:33,370 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-03-26 03:26:33,370 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:33,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 26 events. 0/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 13 conditions per place. [2021-03-26 03:26:33,370 INFO L142 LiptonReduction]: Number of co-enabled transitions 288 [2021-03-26 03:26:33,371 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:33,371 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:33,371 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3 [2021-03-26 03:26:33,371 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 26 transitions, 114 flow [2021-03-26 03:26:33,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 03:26:33,372 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:33,372 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:33,372 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-26 03:26:33,372 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:33,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:33,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1127292090, now seen corresponding path program 1 times [2021-03-26 03:26:33,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:33,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573006623] [2021-03-26 03:26:33,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:33,375 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:33,376 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:33,377 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:33,377 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:33,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-26 03:26:33,377 WARN L342 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:33,377 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2021-03-26 03:26:33,388 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:33,388 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:33,388 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:33,389 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:33,389 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:33,389 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:33,389 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:33,389 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:33,389 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:33,389 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:33,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 44 transitions, 309 flow [2021-03-26 03:26:33,393 INFO L129 PetriNetUnfolder]: 0/83 cut-off events. [2021-03-26 03:26:33,394 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:33,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 83 events. 0/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 304 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 0. Up to 14 conditions per place. [2021-03-26 03:26:33,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 44 transitions, 309 flow [2021-03-26 03:26:33,394 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 42 transitions, 305 flow [2021-03-26 03:26:33,394 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:33,394 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 42 transitions, 305 flow [2021-03-26 03:26:33,394 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 42 transitions, 305 flow [2021-03-26 03:26:33,395 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 42 transitions, 305 flow [2021-03-26 03:26:33,398 INFO L129 PetriNetUnfolder]: 0/55 cut-off events. [2021-03-26 03:26:33,398 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:33,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 55 events. 0/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 126 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 0. Up to 14 conditions per place. [2021-03-26 03:26:33,399 INFO L142 LiptonReduction]: Number of co-enabled transitions 1040 [2021-03-26 03:26:33,673 INFO L154 LiptonReduction]: Checked pairs total: 416 [2021-03-26 03:26:33,673 INFO L156 LiptonReduction]: Total number of compositions: 13 [2021-03-26 03:26:33,673 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 279 [2021-03-26 03:26:33,674 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:26:33,674 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:33,674 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:33,674 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:33,674 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:33,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:33,674 INFO L82 PathProgramCache]: Analyzing trace with hash 14371, now seen corresponding path program 1 times [2021-03-26 03:26:33,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:33,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317652012] [2021-03-26 03:26:33,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:33,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:33,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:33,681 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 03:26:33,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317652012] [2021-03-26 03:26:33,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:33,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:33,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470543] [2021-03-26 03:26:33,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:33,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:33,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:33,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:33,682 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 57 [2021-03-26 03:26:33,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 29 transitions, 279 flow. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 03:26:33,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:33,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 57 [2021-03-26 03:26:33,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:33,685 INFO L129 PetriNetUnfolder]: 0/28 cut-off events. [2021-03-26 03:26:33,685 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:33,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 14/42 useless extension candidates. Maximal degree in co-relation 0. Up to 14 conditions per place. [2021-03-26 03:26:33,685 INFO L132 encePairwiseOnDemand]: 55/57 looper letters, 0 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2021-03-26 03:26:33,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 28 transitions, 279 flow [2021-03-26 03:26:33,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:33,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:33,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2021-03-26 03:26:33,686 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9590643274853801 [2021-03-26 03:26:33,686 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 164 transitions. [2021-03-26 03:26:33,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 164 transitions. [2021-03-26 03:26:33,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:33,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 164 transitions. [2021-03-26 03:26:33,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 03:26:33,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 03:26:33,687 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 03:26:33,687 INFO L185 Difference]: Start difference. First operand has 56 places, 29 transitions, 279 flow. Second operand 3 states and 164 transitions. [2021-03-26 03:26:33,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 28 transitions, 279 flow [2021-03-26 03:26:33,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 28 transitions, 123 flow, removed 78 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:33,689 INFO L241 Difference]: Finished difference. Result has 57 places, 28 transitions, 123 flow [2021-03-26 03:26:33,689 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=57, PETRI_TRANSITIONS=28} [2021-03-26 03:26:33,689 INFO L343 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2021-03-26 03:26:33,689 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:33,689 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 28 transitions, 123 flow [2021-03-26 03:26:33,689 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 28 transitions, 123 flow [2021-03-26 03:26:33,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 28 transitions, 123 flow [2021-03-26 03:26:33,691 INFO L129 PetriNetUnfolder]: 0/28 cut-off events. [2021-03-26 03:26:33,691 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:33,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 14 conditions per place. [2021-03-26 03:26:33,691 INFO L142 LiptonReduction]: Number of co-enabled transitions 338 [2021-03-26 03:26:33,693 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:33,693 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:33,693 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-03-26 03:26:33,693 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 28 transitions, 123 flow [2021-03-26 03:26:33,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 03:26:33,693 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:33,694 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:33,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-26 03:26:33,694 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:33,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:33,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1451810459, now seen corresponding path program 1 times [2021-03-26 03:26:33,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:33,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269558750] [2021-03-26 03:26:33,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:33,697 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:33,698 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:33,700 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:33,700 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:33,700 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-26 03:26:33,700 WARN L342 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:33,700 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2021-03-26 03:26:33,715 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:33,715 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:33,716 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:33,716 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:33,716 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:33,716 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:33,716 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:33,716 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:33,716 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:33,716 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:33,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 76 places, 47 transitions, 346 flow [2021-03-26 03:26:33,721 INFO L129 PetriNetUnfolder]: 0/89 cut-off events. [2021-03-26 03:26:33,721 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:33,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 89 events. 0/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 346 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 0. Up to 15 conditions per place. [2021-03-26 03:26:33,721 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 47 transitions, 346 flow [2021-03-26 03:26:33,722 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 45 transitions, 342 flow [2021-03-26 03:26:33,722 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:33,722 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 45 transitions, 342 flow [2021-03-26 03:26:33,722 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 45 transitions, 342 flow [2021-03-26 03:26:33,722 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 74 places, 45 transitions, 342 flow [2021-03-26 03:26:33,726 INFO L129 PetriNetUnfolder]: 0/59 cut-off events. [2021-03-26 03:26:33,726 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:33,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 59 events. 0/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 167 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 0. Up to 15 conditions per place. [2021-03-26 03:26:33,727 INFO L142 LiptonReduction]: Number of co-enabled transitions 1204 [2021-03-26 03:26:34,038 INFO L154 LiptonReduction]: Checked pairs total: 483 [2021-03-26 03:26:34,038 INFO L156 LiptonReduction]: Total number of compositions: 14 [2021-03-26 03:26:34,038 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 316 [2021-03-26 03:26:34,039 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:26:34,039 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:34,039 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:34,039 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:34,039 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:34,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:34,039 INFO L82 PathProgramCache]: Analyzing trace with hash 16291, now seen corresponding path program 1 times [2021-03-26 03:26:34,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:34,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121598557] [2021-03-26 03:26:34,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:34,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:34,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:34,045 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 03:26:34,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121598557] [2021-03-26 03:26:34,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:34,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:34,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092256419] [2021-03-26 03:26:34,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:34,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:34,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:34,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:34,045 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 61 [2021-03-26 03:26:34,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 31 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 03:26:34,046 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:34,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 61 [2021-03-26 03:26:34,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:34,049 INFO L129 PetriNetUnfolder]: 0/30 cut-off events. [2021-03-26 03:26:34,049 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:34,049 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 15/45 useless extension candidates. Maximal degree in co-relation 0. Up to 15 conditions per place. [2021-03-26 03:26:34,049 INFO L132 encePairwiseOnDemand]: 59/61 looper letters, 0 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2021-03-26 03:26:34,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 30 transitions, 314 flow [2021-03-26 03:26:34,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:34,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:34,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2021-03-26 03:26:34,049 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9617486338797814 [2021-03-26 03:26:34,049 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 176 transitions. [2021-03-26 03:26:34,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 176 transitions. [2021-03-26 03:26:34,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:34,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 176 transitions. [2021-03-26 03:26:34,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 03:26:34,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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 03:26:34,050 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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 03:26:34,050 INFO L185 Difference]: Start difference. First operand has 60 places, 31 transitions, 314 flow. Second operand 3 states and 176 transitions. [2021-03-26 03:26:34,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 30 transitions, 314 flow [2021-03-26 03:26:34,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 30 transitions, 132 flow, removed 91 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:34,052 INFO L241 Difference]: Finished difference. Result has 61 places, 30 transitions, 132 flow [2021-03-26 03:26:34,052 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=61, PETRI_TRANSITIONS=30} [2021-03-26 03:26:34,052 INFO L343 CegarLoopForPetriNet]: 60 programPoint places, 1 predicate places. [2021-03-26 03:26:34,052 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:34,052 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 30 transitions, 132 flow [2021-03-26 03:26:34,052 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 30 transitions, 132 flow [2021-03-26 03:26:34,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 30 transitions, 132 flow [2021-03-26 03:26:34,054 INFO L129 PetriNetUnfolder]: 0/30 cut-off events. [2021-03-26 03:26:34,054 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:34,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 0. Up to 15 conditions per place. [2021-03-26 03:26:34,054 INFO L142 LiptonReduction]: Number of co-enabled transitions 392 [2021-03-26 03:26:34,056 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:34,056 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:34,056 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-03-26 03:26:34,056 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 30 transitions, 132 flow [2021-03-26 03:26:34,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 03:26:34,056 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:34,056 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:34,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-26 03:26:34,056 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:34,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:34,057 INFO L82 PathProgramCache]: Analyzing trace with hash -138593667, now seen corresponding path program 1 times [2021-03-26 03:26:34,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:34,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239154561] [2021-03-26 03:26:34,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:34,059 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:34,061 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:34,062 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:34,062 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:34,062 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-26 03:26:34,062 WARN L342 ceAbstractionStarter]: 14 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:34,062 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 15 thread instances. [2021-03-26 03:26:34,074 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:34,074 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:34,074 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:34,074 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:34,074 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:34,074 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:34,074 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:34,074 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:34,074 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:34,074 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:34,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 50 transitions, 385 flow [2021-03-26 03:26:34,079 INFO L129 PetriNetUnfolder]: 0/95 cut-off events. [2021-03-26 03:26:34,079 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:34,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 95 events. 0/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 296 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 0. Up to 16 conditions per place. [2021-03-26 03:26:34,080 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 50 transitions, 385 flow [2021-03-26 03:26:34,080 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 48 transitions, 381 flow [2021-03-26 03:26:34,080 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:34,080 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 48 transitions, 381 flow [2021-03-26 03:26:34,080 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 48 transitions, 381 flow [2021-03-26 03:26:34,080 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 48 transitions, 381 flow [2021-03-26 03:26:34,084 INFO L129 PetriNetUnfolder]: 0/63 cut-off events. [2021-03-26 03:26:34,084 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:34,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 63 events. 0/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 179 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 0. Up to 16 conditions per place. [2021-03-26 03:26:34,085 INFO L142 LiptonReduction]: Number of co-enabled transitions 1380 [2021-03-26 03:26:34,423 INFO L154 LiptonReduction]: Checked pairs total: 555 [2021-03-26 03:26:34,423 INFO L156 LiptonReduction]: Total number of compositions: 15 [2021-03-26 03:26:34,423 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 343 [2021-03-26 03:26:34,424 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:26:34,424 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:34,424 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:34,424 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:34,424 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:34,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:34,424 INFO L82 PathProgramCache]: Analyzing trace with hash 18339, now seen corresponding path program 1 times [2021-03-26 03:26:34,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:34,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846168756] [2021-03-26 03:26:34,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:34,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:34,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:34,430 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 03:26:34,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846168756] [2021-03-26 03:26:34,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:34,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:34,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97689187] [2021-03-26 03:26:34,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:34,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:34,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:34,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:34,430 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 65 [2021-03-26 03:26:34,431 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 33 transitions, 351 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 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 03:26:34,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:34,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 65 [2021-03-26 03:26:34,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:34,434 INFO L129 PetriNetUnfolder]: 0/32 cut-off events. [2021-03-26 03:26:34,434 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:34,434 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 32 events. 0/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 16/48 useless extension candidates. Maximal degree in co-relation 0. Up to 16 conditions per place. [2021-03-26 03:26:34,434 INFO L132 encePairwiseOnDemand]: 63/65 looper letters, 0 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2021-03-26 03:26:34,434 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 32 transitions, 351 flow [2021-03-26 03:26:34,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:34,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:34,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2021-03-26 03:26:34,434 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9641025641025641 [2021-03-26 03:26:34,435 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 188 transitions. [2021-03-26 03:26:34,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 188 transitions. [2021-03-26 03:26:34,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:34,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 188 transitions. [2021-03-26 03:26:34,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 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 03:26:34,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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 03:26:34,435 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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 03:26:34,436 INFO L185 Difference]: Start difference. First operand has 64 places, 33 transitions, 351 flow. Second operand 3 states and 188 transitions. [2021-03-26 03:26:34,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 32 transitions, 351 flow [2021-03-26 03:26:34,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 32 transitions, 141 flow, removed 105 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:34,437 INFO L241 Difference]: Finished difference. Result has 65 places, 32 transitions, 141 flow [2021-03-26 03:26:34,437 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=65, PETRI_TRANSITIONS=32} [2021-03-26 03:26:34,437 INFO L343 CegarLoopForPetriNet]: 64 programPoint places, 1 predicate places. [2021-03-26 03:26:34,437 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:34,437 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 32 transitions, 141 flow [2021-03-26 03:26:34,438 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 32 transitions, 141 flow [2021-03-26 03:26:34,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 32 transitions, 141 flow [2021-03-26 03:26:34,440 INFO L129 PetriNetUnfolder]: 0/32 cut-off events. [2021-03-26 03:26:34,440 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:34,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 32 events. 0/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 0. Up to 16 conditions per place. [2021-03-26 03:26:34,440 INFO L142 LiptonReduction]: Number of co-enabled transitions 450 [2021-03-26 03:26:34,441 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:34,441 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:34,441 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-03-26 03:26:34,442 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 32 transitions, 141 flow [2021-03-26 03:26:34,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 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 03:26:34,442 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:34,442 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:34,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-26 03:26:34,442 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:34,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:34,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1465640138, now seen corresponding path program 1 times [2021-03-26 03:26:34,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:34,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494141827] [2021-03-26 03:26:34,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:34,445 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:34,446 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:34,447 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:34,447 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:34,447 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-26 03:26:34,448 WARN L342 ceAbstractionStarter]: 15 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:34,448 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 16 thread instances. [2021-03-26 03:26:34,461 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:34,461 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:34,461 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:34,461 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:34,461 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:34,461 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:34,461 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:34,461 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:34,461 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:34,461 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:34,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 53 transitions, 426 flow [2021-03-26 03:26:34,467 INFO L129 PetriNetUnfolder]: 0/101 cut-off events. [2021-03-26 03:26:34,467 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:34,467 INFO L84 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 101 events. 0/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 329 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 0. Up to 17 conditions per place. [2021-03-26 03:26:34,467 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 53 transitions, 426 flow [2021-03-26 03:26:34,467 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 51 transitions, 422 flow [2021-03-26 03:26:34,467 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:34,468 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 51 transitions, 422 flow [2021-03-26 03:26:34,468 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 51 transitions, 422 flow [2021-03-26 03:26:34,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 51 transitions, 422 flow [2021-03-26 03:26:34,471 INFO L129 PetriNetUnfolder]: 0/67 cut-off events. [2021-03-26 03:26:34,472 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:34,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 67 events. 0/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 175 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 0. Up to 17 conditions per place. [2021-03-26 03:26:34,473 INFO L142 LiptonReduction]: Number of co-enabled transitions 1568 [2021-03-26 03:26:34,847 INFO L154 LiptonReduction]: Checked pairs total: 632 [2021-03-26 03:26:34,847 INFO L156 LiptonReduction]: Total number of compositions: 16 [2021-03-26 03:26:34,848 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 381 [2021-03-26 03:26:34,848 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:26:34,848 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:34,848 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:34,849 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:34,849 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:34,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:34,849 INFO L82 PathProgramCache]: Analyzing trace with hash 20515, now seen corresponding path program 1 times [2021-03-26 03:26:34,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:34,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158557047] [2021-03-26 03:26:34,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:34,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:34,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:34,854 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 03:26:34,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158557047] [2021-03-26 03:26:34,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:34,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:34,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928178684] [2021-03-26 03:26:34,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:34,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:34,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:34,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:34,855 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 69 [2021-03-26 03:26:34,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 35 transitions, 390 flow. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 03:26:34,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:34,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 69 [2021-03-26 03:26:34,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:34,859 INFO L129 PetriNetUnfolder]: 0/34 cut-off events. [2021-03-26 03:26:34,859 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:34,859 INFO L84 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 34 events. 0/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 17/51 useless extension candidates. Maximal degree in co-relation 0. Up to 17 conditions per place. [2021-03-26 03:26:34,859 INFO L132 encePairwiseOnDemand]: 67/69 looper letters, 0 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2021-03-26 03:26:34,859 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 34 transitions, 390 flow [2021-03-26 03:26:34,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:34,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:34,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 200 transitions. [2021-03-26 03:26:34,859 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.966183574879227 [2021-03-26 03:26:34,860 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 200 transitions. [2021-03-26 03:26:34,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 200 transitions. [2021-03-26 03:26:34,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:34,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 200 transitions. [2021-03-26 03:26:34,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 03:26:34,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 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 03:26:34,860 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 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 03:26:34,861 INFO L185 Difference]: Start difference. First operand has 68 places, 35 transitions, 390 flow. Second operand 3 states and 200 transitions. [2021-03-26 03:26:34,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 34 transitions, 390 flow [2021-03-26 03:26:34,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 34 transitions, 150 flow, removed 120 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:34,862 INFO L241 Difference]: Finished difference. Result has 69 places, 34 transitions, 150 flow [2021-03-26 03:26:34,863 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=69, PETRI_TRANSITIONS=34} [2021-03-26 03:26:34,863 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 1 predicate places. [2021-03-26 03:26:34,863 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:34,863 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 34 transitions, 150 flow [2021-03-26 03:26:34,863 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 34 transitions, 150 flow [2021-03-26 03:26:34,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 34 transitions, 150 flow [2021-03-26 03:26:34,865 INFO L129 PetriNetUnfolder]: 0/34 cut-off events. [2021-03-26 03:26:34,865 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:34,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 34 events. 0/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 17 conditions per place. [2021-03-26 03:26:34,865 INFO L142 LiptonReduction]: Number of co-enabled transitions 512 [2021-03-26 03:26:34,867 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:34,867 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:34,867 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-03-26 03:26:34,867 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 34 transitions, 150 flow [2021-03-26 03:26:34,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 03:26:34,867 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:34,868 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:34,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-26 03:26:34,868 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:34,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:34,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1833507392, now seen corresponding path program 1 times [2021-03-26 03:26:34,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:34,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913014549] [2021-03-26 03:26:34,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:34,871 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:34,872 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:34,873 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:34,873 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:34,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-26 03:26:34,874 WARN L342 ceAbstractionStarter]: 16 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:34,874 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 17 thread instances. [2021-03-26 03:26:34,886 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:34,886 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:34,887 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:34,887 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:34,887 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:34,887 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:34,887 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:34,887 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:34,887 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:34,887 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:34,887 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 56 transitions, 469 flow [2021-03-26 03:26:34,894 INFO L129 PetriNetUnfolder]: 0/107 cut-off events. [2021-03-26 03:26:34,894 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:34,894 INFO L84 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 107 events. 0/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 345 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 0. Up to 18 conditions per place. [2021-03-26 03:26:34,894 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 56 transitions, 469 flow [2021-03-26 03:26:34,895 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 54 transitions, 465 flow [2021-03-26 03:26:34,895 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:34,895 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 54 transitions, 465 flow [2021-03-26 03:26:34,895 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 54 transitions, 465 flow [2021-03-26 03:26:34,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 54 transitions, 465 flow [2021-03-26 03:26:34,899 INFO L129 PetriNetUnfolder]: 0/71 cut-off events. [2021-03-26 03:26:34,899 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:34,899 INFO L84 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 71 events. 0/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 185 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 0. Up to 18 conditions per place. [2021-03-26 03:26:34,900 INFO L142 LiptonReduction]: Number of co-enabled transitions 1768 [2021-03-26 03:26:35,302 INFO L154 LiptonReduction]: Checked pairs total: 714 [2021-03-26 03:26:35,302 INFO L156 LiptonReduction]: Total number of compositions: 17 [2021-03-26 03:26:35,302 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 407 [2021-03-26 03:26:35,303 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:26:35,303 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:35,303 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:35,303 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:35,303 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:35,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:35,304 INFO L82 PathProgramCache]: Analyzing trace with hash 22819, now seen corresponding path program 1 times [2021-03-26 03:26:35,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:35,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033054318] [2021-03-26 03:26:35,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:35,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:35,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:35,309 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 03:26:35,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033054318] [2021-03-26 03:26:35,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:35,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:35,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7383460] [2021-03-26 03:26:35,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:35,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:35,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:35,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:35,310 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 73 [2021-03-26 03:26:35,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 37 transitions, 431 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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 03:26:35,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:35,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 73 [2021-03-26 03:26:35,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:35,314 INFO L129 PetriNetUnfolder]: 0/36 cut-off events. [2021-03-26 03:26:35,314 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:35,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 36 events. 0/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 18/54 useless extension candidates. Maximal degree in co-relation 0. Up to 18 conditions per place. [2021-03-26 03:26:35,315 INFO L132 encePairwiseOnDemand]: 71/73 looper letters, 0 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2021-03-26 03:26:35,315 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 36 transitions, 431 flow [2021-03-26 03:26:35,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:35,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:35,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 212 transitions. [2021-03-26 03:26:35,315 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9680365296803652 [2021-03-26 03:26:35,315 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 212 transitions. [2021-03-26 03:26:35,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 212 transitions. [2021-03-26 03:26:35,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:35,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 212 transitions. [2021-03-26 03:26:35,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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 03:26:35,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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 03:26:35,316 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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 03:26:35,316 INFO L185 Difference]: Start difference. First operand has 72 places, 37 transitions, 431 flow. Second operand 3 states and 212 transitions. [2021-03-26 03:26:35,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 36 transitions, 431 flow [2021-03-26 03:26:35,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 36 transitions, 159 flow, removed 136 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:35,318 INFO L241 Difference]: Finished difference. Result has 73 places, 36 transitions, 159 flow [2021-03-26 03:26:35,318 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=73, PETRI_TRANSITIONS=36} [2021-03-26 03:26:35,318 INFO L343 CegarLoopForPetriNet]: 72 programPoint places, 1 predicate places. [2021-03-26 03:26:35,318 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:35,319 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 36 transitions, 159 flow [2021-03-26 03:26:35,319 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 36 transitions, 159 flow [2021-03-26 03:26:35,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 36 transitions, 159 flow [2021-03-26 03:26:35,322 INFO L129 PetriNetUnfolder]: 0/36 cut-off events. [2021-03-26 03:26:35,322 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:35,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 36 events. 0/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 18 conditions per place. [2021-03-26 03:26:35,323 INFO L142 LiptonReduction]: Number of co-enabled transitions 578 [2021-03-26 03:26:35,324 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:35,324 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:35,324 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-26 03:26:35,325 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 36 transitions, 159 flow [2021-03-26 03:26:35,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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 03:26:35,325 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:35,325 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:35,325 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-26 03:26:35,325 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:35,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:35,325 INFO L82 PathProgramCache]: Analyzing trace with hash 825672673, now seen corresponding path program 1 times [2021-03-26 03:26:35,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:35,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970584120] [2021-03-26 03:26:35,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:35,336 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:35,339 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:35,344 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:35,344 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:35,345 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-26 03:26:35,345 WARN L342 ceAbstractionStarter]: 17 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:35,345 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 18 thread instances. [2021-03-26 03:26:35,360 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:35,360 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:35,360 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:35,361 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:35,361 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:35,361 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:35,361 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:35,361 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:35,361 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:35,361 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:35,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 59 transitions, 514 flow [2021-03-26 03:26:35,367 INFO L129 PetriNetUnfolder]: 0/113 cut-off events. [2021-03-26 03:26:35,367 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:35,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 113 events. 0/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 366 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 0. Up to 19 conditions per place. [2021-03-26 03:26:35,367 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 59 transitions, 514 flow [2021-03-26 03:26:35,368 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 57 transitions, 510 flow [2021-03-26 03:26:35,368 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:35,368 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 57 transitions, 510 flow [2021-03-26 03:26:35,368 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 57 transitions, 510 flow [2021-03-26 03:26:35,369 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 57 transitions, 510 flow [2021-03-26 03:26:35,373 INFO L129 PetriNetUnfolder]: 0/75 cut-off events. [2021-03-26 03:26:35,373 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:35,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 75 events. 0/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 185 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 0. Up to 19 conditions per place. [2021-03-26 03:26:35,374 INFO L142 LiptonReduction]: Number of co-enabled transitions 1980 [2021-03-26 03:26:35,840 INFO L154 LiptonReduction]: Checked pairs total: 801 [2021-03-26 03:26:35,840 INFO L156 LiptonReduction]: Total number of compositions: 18 [2021-03-26 03:26:35,840 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 472 [2021-03-26 03:26:35,841 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:26:35,841 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:35,841 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:35,841 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:35,841 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:35,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:35,841 INFO L82 PathProgramCache]: Analyzing trace with hash 25251, now seen corresponding path program 1 times [2021-03-26 03:26:35,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:35,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956773658] [2021-03-26 03:26:35,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:35,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:35,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:35,852 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 03:26:35,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956773658] [2021-03-26 03:26:35,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:35,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:35,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087867355] [2021-03-26 03:26:35,852 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:35,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:35,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:35,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:35,853 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 77 [2021-03-26 03:26:35,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 39 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 03:26:35,853 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:35,853 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 77 [2021-03-26 03:26:35,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:35,859 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-03-26 03:26:35,859 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:35,859 INFO L84 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 38 events. 0/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 19/57 useless extension candidates. Maximal degree in co-relation 0. Up to 19 conditions per place. [2021-03-26 03:26:35,859 INFO L132 encePairwiseOnDemand]: 75/77 looper letters, 0 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2021-03-26 03:26:35,860 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 38 transitions, 474 flow [2021-03-26 03:26:35,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:35,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:35,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2021-03-26 03:26:35,860 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9696969696969697 [2021-03-26 03:26:35,860 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2021-03-26 03:26:35,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2021-03-26 03:26:35,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:35,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2021-03-26 03:26:35,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 03:26:35,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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 03:26:35,861 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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 03:26:35,861 INFO L185 Difference]: Start difference. First operand has 76 places, 39 transitions, 474 flow. Second operand 3 states and 224 transitions. [2021-03-26 03:26:35,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 38 transitions, 474 flow [2021-03-26 03:26:35,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 38 transitions, 168 flow, removed 153 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:35,863 INFO L241 Difference]: Finished difference. Result has 77 places, 38 transitions, 168 flow [2021-03-26 03:26:35,863 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=77, PETRI_TRANSITIONS=38} [2021-03-26 03:26:35,863 INFO L343 CegarLoopForPetriNet]: 76 programPoint places, 1 predicate places. [2021-03-26 03:26:35,863 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:35,864 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 38 transitions, 168 flow [2021-03-26 03:26:35,864 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 38 transitions, 168 flow [2021-03-26 03:26:35,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 77 places, 38 transitions, 168 flow [2021-03-26 03:26:35,866 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-03-26 03:26:35,866 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:35,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 38 events. 0/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 0. Up to 19 conditions per place. [2021-03-26 03:26:35,867 INFO L142 LiptonReduction]: Number of co-enabled transitions 648 [2021-03-26 03:26:35,868 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:35,868 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:35,868 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-26 03:26:35,869 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 38 transitions, 168 flow [2021-03-26 03:26:35,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 03:26:35,869 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:35,869 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:35,869 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-26 03:26:35,869 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:35,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:35,870 INFO L82 PathProgramCache]: Analyzing trace with hash 334217731, now seen corresponding path program 1 times [2021-03-26 03:26:35,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:35,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244778004] [2021-03-26 03:26:35,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:35,877 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:35,883 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:35,886 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:35,887 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:35,887 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-26 03:26:35,888 WARN L342 ceAbstractionStarter]: 18 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:35,888 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 19 thread instances. [2021-03-26 03:26:35,901 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:35,902 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:35,902 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:35,902 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:35,902 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:35,902 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:35,902 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:35,902 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:35,902 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:35,902 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:35,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 62 transitions, 561 flow [2021-03-26 03:26:35,911 INFO L129 PetriNetUnfolder]: 0/119 cut-off events. [2021-03-26 03:26:35,911 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:35,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 119 events. 0/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 380 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 0. Up to 20 conditions per place. [2021-03-26 03:26:35,911 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 62 transitions, 561 flow [2021-03-26 03:26:35,912 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 60 transitions, 557 flow [2021-03-26 03:26:35,912 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:35,912 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 60 transitions, 557 flow [2021-03-26 03:26:35,912 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 60 transitions, 557 flow [2021-03-26 03:26:35,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 60 transitions, 557 flow [2021-03-26 03:26:35,917 INFO L129 PetriNetUnfolder]: 0/79 cut-off events. [2021-03-26 03:26:35,917 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:35,917 INFO L84 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 79 events. 0/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 207 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 0. Up to 20 conditions per place. [2021-03-26 03:26:35,918 INFO L142 LiptonReduction]: Number of co-enabled transitions 2204 [2021-03-26 03:26:36,404 INFO L154 LiptonReduction]: Checked pairs total: 893 [2021-03-26 03:26:36,404 INFO L156 LiptonReduction]: Total number of compositions: 19 [2021-03-26 03:26:36,404 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 492 [2021-03-26 03:26:36,405 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:26:36,406 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:36,406 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:36,406 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:36,406 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:36,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:36,406 INFO L82 PathProgramCache]: Analyzing trace with hash 27811, now seen corresponding path program 1 times [2021-03-26 03:26:36,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:36,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001889832] [2021-03-26 03:26:36,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:36,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:36,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:36,411 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 03:26:36,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001889832] [2021-03-26 03:26:36,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:36,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:36,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823473132] [2021-03-26 03:26:36,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:36,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:36,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:36,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:36,412 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 81 [2021-03-26 03:26:36,412 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 41 transitions, 519 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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 03:26:36,412 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:36,412 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 81 [2021-03-26 03:26:36,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:36,416 INFO L129 PetriNetUnfolder]: 0/40 cut-off events. [2021-03-26 03:26:36,416 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:36,416 INFO L84 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 40 events. 0/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 20/60 useless extension candidates. Maximal degree in co-relation 0. Up to 20 conditions per place. [2021-03-26 03:26:36,417 INFO L132 encePairwiseOnDemand]: 79/81 looper letters, 0 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2021-03-26 03:26:36,417 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 40 transitions, 519 flow [2021-03-26 03:26:36,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:36,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:36,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2021-03-26 03:26:36,417 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9711934156378601 [2021-03-26 03:26:36,417 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2021-03-26 03:26:36,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2021-03-26 03:26:36,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:36,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2021-03-26 03:26:36,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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 03:26:36,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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 03:26:36,418 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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 03:26:36,418 INFO L185 Difference]: Start difference. First operand has 80 places, 41 transitions, 519 flow. Second operand 3 states and 236 transitions. [2021-03-26 03:26:36,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 40 transitions, 519 flow [2021-03-26 03:26:36,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 40 transitions, 177 flow, removed 171 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:36,421 INFO L241 Difference]: Finished difference. Result has 81 places, 40 transitions, 177 flow [2021-03-26 03:26:36,421 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=81, PETRI_TRANSITIONS=40} [2021-03-26 03:26:36,421 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, 1 predicate places. [2021-03-26 03:26:36,421 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:36,421 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 40 transitions, 177 flow [2021-03-26 03:26:36,422 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 40 transitions, 177 flow [2021-03-26 03:26:36,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 40 transitions, 177 flow [2021-03-26 03:26:36,424 INFO L129 PetriNetUnfolder]: 0/40 cut-off events. [2021-03-26 03:26:36,424 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:36,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 40 events. 0/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 0. Up to 20 conditions per place. [2021-03-26 03:26:36,424 INFO L142 LiptonReduction]: Number of co-enabled transitions 722 [2021-03-26 03:26:36,426 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:36,426 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:36,427 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-26 03:26:36,427 INFO L480 AbstractCegarLoop]: Abstraction has has 81 places, 40 transitions, 177 flow [2021-03-26 03:26:36,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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 03:26:36,427 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:36,428 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:36,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-26 03:26:36,428 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:36,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:36,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1359261028, now seen corresponding path program 1 times [2021-03-26 03:26:36,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:36,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560641211] [2021-03-26 03:26:36,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:36,431 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:36,432 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:36,433 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:36,433 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:36,433 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-26 03:26:36,433 WARN L342 ceAbstractionStarter]: 19 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:36,434 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 20 thread instances. [2021-03-26 03:26:36,449 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:36,449 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:36,449 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:36,449 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:36,449 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:36,449 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:36,449 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:36,449 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:36,449 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:36,449 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:36,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 106 places, 65 transitions, 610 flow [2021-03-26 03:26:36,456 INFO L129 PetriNetUnfolder]: 0/125 cut-off events. [2021-03-26 03:26:36,456 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:36,456 INFO L84 FinitePrefix]: Finished finitePrefix Result has 396 conditions, 125 events. 0/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 402 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 0. Up to 21 conditions per place. [2021-03-26 03:26:36,456 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 65 transitions, 610 flow [2021-03-26 03:26:36,457 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 63 transitions, 606 flow [2021-03-26 03:26:36,457 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:36,457 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 63 transitions, 606 flow [2021-03-26 03:26:36,457 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 63 transitions, 606 flow [2021-03-26 03:26:36,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 63 transitions, 606 flow [2021-03-26 03:26:36,462 INFO L129 PetriNetUnfolder]: 0/83 cut-off events. [2021-03-26 03:26:36,462 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:36,462 INFO L84 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 83 events. 0/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 223 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 0. Up to 21 conditions per place. [2021-03-26 03:26:36,464 INFO L142 LiptonReduction]: Number of co-enabled transitions 2440 [2021-03-26 03:26:37,086 INFO L154 LiptonReduction]: Checked pairs total: 990 [2021-03-26 03:26:37,087 INFO L156 LiptonReduction]: Total number of compositions: 20 [2021-03-26 03:26:37,087 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 630 [2021-03-26 03:26:37,088 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:26:37,088 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:37,088 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:37,088 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:37,088 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:37,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:37,088 INFO L82 PathProgramCache]: Analyzing trace with hash 30499, now seen corresponding path program 1 times [2021-03-26 03:26:37,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:37,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977231371] [2021-03-26 03:26:37,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:37,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:37,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:37,094 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 03:26:37,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977231371] [2021-03-26 03:26:37,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:37,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:37,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324671229] [2021-03-26 03:26:37,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:37,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:37,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:37,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:37,095 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 85 [2021-03-26 03:26:37,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 43 transitions, 566 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 03:26:37,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:37,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 85 [2021-03-26 03:26:37,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:37,100 INFO L129 PetriNetUnfolder]: 0/42 cut-off events. [2021-03-26 03:26:37,101 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:37,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 42 events. 0/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 0 based on Foata normal form. 21/63 useless extension candidates. Maximal degree in co-relation 0. Up to 21 conditions per place. [2021-03-26 03:26:37,101 INFO L132 encePairwiseOnDemand]: 83/85 looper letters, 0 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2021-03-26 03:26:37,101 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 42 transitions, 566 flow [2021-03-26 03:26:37,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:37,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:37,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2021-03-26 03:26:37,102 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9725490196078431 [2021-03-26 03:26:37,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2021-03-26 03:26:37,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2021-03-26 03:26:37,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:37,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2021-03-26 03:26:37,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 03:26:37,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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 03:26:37,103 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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 03:26:37,103 INFO L185 Difference]: Start difference. First operand has 84 places, 43 transitions, 566 flow. Second operand 3 states and 248 transitions. [2021-03-26 03:26:37,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 42 transitions, 566 flow [2021-03-26 03:26:37,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 42 transitions, 186 flow, removed 190 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:37,106 INFO L241 Difference]: Finished difference. Result has 85 places, 42 transitions, 186 flow [2021-03-26 03:26:37,106 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=85, PETRI_TRANSITIONS=42} [2021-03-26 03:26:37,106 INFO L343 CegarLoopForPetriNet]: 84 programPoint places, 1 predicate places. [2021-03-26 03:26:37,106 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:37,107 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 42 transitions, 186 flow [2021-03-26 03:26:37,107 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 42 transitions, 186 flow [2021-03-26 03:26:37,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 42 transitions, 186 flow [2021-03-26 03:26:37,110 INFO L129 PetriNetUnfolder]: 0/42 cut-off events. [2021-03-26 03:26:37,110 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:37,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 42 events. 0/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 0. Up to 21 conditions per place. [2021-03-26 03:26:37,110 INFO L142 LiptonReduction]: Number of co-enabled transitions 800 [2021-03-26 03:26:37,112 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:37,112 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:37,112 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-26 03:26:37,113 INFO L480 AbstractCegarLoop]: Abstraction has has 85 places, 42 transitions, 186 flow [2021-03-26 03:26:37,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 03:26:37,113 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:37,113 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:37,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-26 03:26:37,113 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:37,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:37,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1298741190, now seen corresponding path program 1 times [2021-03-26 03:26:37,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:37,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041822480] [2021-03-26 03:26:37,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:37,118 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:37,119 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:37,121 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:37,121 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:37,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-26 03:26:37,121 WARN L342 ceAbstractionStarter]: 20 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:37,121 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 21 thread instances. [2021-03-26 03:26:37,139 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:37,139 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:37,140 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:37,140 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:37,140 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:37,140 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:37,140 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:37,140 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:37,140 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:37,140 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:37,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 111 places, 68 transitions, 661 flow [2021-03-26 03:26:37,147 INFO L129 PetriNetUnfolder]: 0/131 cut-off events. [2021-03-26 03:26:37,147 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:37,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 131 events. 0/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 418 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 0. Up to 22 conditions per place. [2021-03-26 03:26:37,147 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 68 transitions, 661 flow [2021-03-26 03:26:37,148 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 66 transitions, 657 flow [2021-03-26 03:26:37,148 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:37,148 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 66 transitions, 657 flow [2021-03-26 03:26:37,148 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 66 transitions, 657 flow [2021-03-26 03:26:37,148 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 109 places, 66 transitions, 657 flow [2021-03-26 03:26:37,153 INFO L129 PetriNetUnfolder]: 0/87 cut-off events. [2021-03-26 03:26:37,154 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:37,154 INFO L84 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 87 events. 0/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 257 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 0. Up to 22 conditions per place. [2021-03-26 03:26:37,155 INFO L142 LiptonReduction]: Number of co-enabled transitions 2688 [2021-03-26 03:26:37,766 INFO L154 LiptonReduction]: Checked pairs total: 1092 [2021-03-26 03:26:37,766 INFO L156 LiptonReduction]: Total number of compositions: 21 [2021-03-26 03:26:37,766 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 618 [2021-03-26 03:26:37,767 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:26:37,767 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:37,767 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:37,767 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:37,767 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:37,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:37,767 INFO L82 PathProgramCache]: Analyzing trace with hash 33315, now seen corresponding path program 1 times [2021-03-26 03:26:37,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:37,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110167374] [2021-03-26 03:26:37,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:37,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:37,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:37,773 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 03:26:37,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110167374] [2021-03-26 03:26:37,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:37,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:37,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349095383] [2021-03-26 03:26:37,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:37,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:37,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:37,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:37,773 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 89 [2021-03-26 03:26:37,774 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 45 transitions, 615 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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 03:26:37,774 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:37,774 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 89 [2021-03-26 03:26:37,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:37,778 INFO L129 PetriNetUnfolder]: 0/44 cut-off events. [2021-03-26 03:26:37,778 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:37,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 44 events. 0/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 22/66 useless extension candidates. Maximal degree in co-relation 0. Up to 22 conditions per place. [2021-03-26 03:26:37,778 INFO L132 encePairwiseOnDemand]: 87/89 looper letters, 0 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2021-03-26 03:26:37,778 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 44 transitions, 615 flow [2021-03-26 03:26:37,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:37,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:37,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2021-03-26 03:26:37,779 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9737827715355806 [2021-03-26 03:26:37,779 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 260 transitions. [2021-03-26 03:26:37,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 260 transitions. [2021-03-26 03:26:37,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:37,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 260 transitions. [2021-03-26 03:26:37,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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 03:26:37,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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 03:26:37,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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 03:26:37,780 INFO L185 Difference]: Start difference. First operand has 88 places, 45 transitions, 615 flow. Second operand 3 states and 260 transitions. [2021-03-26 03:26:37,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 44 transitions, 615 flow [2021-03-26 03:26:37,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 44 transitions, 195 flow, removed 210 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:37,784 INFO L241 Difference]: Finished difference. Result has 89 places, 44 transitions, 195 flow [2021-03-26 03:26:37,784 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=89, PETRI_TRANSITIONS=44} [2021-03-26 03:26:37,784 INFO L343 CegarLoopForPetriNet]: 88 programPoint places, 1 predicate places. [2021-03-26 03:26:37,784 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:37,784 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 44 transitions, 195 flow [2021-03-26 03:26:37,784 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 44 transitions, 195 flow [2021-03-26 03:26:37,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 44 transitions, 195 flow [2021-03-26 03:26:37,787 INFO L129 PetriNetUnfolder]: 0/44 cut-off events. [2021-03-26 03:26:37,787 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:37,787 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 44 events. 0/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 22 conditions per place. [2021-03-26 03:26:37,787 INFO L142 LiptonReduction]: Number of co-enabled transitions 882 [2021-03-26 03:26:37,790 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:37,790 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:37,790 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-26 03:26:37,790 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 44 transitions, 195 flow [2021-03-26 03:26:37,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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 03:26:37,790 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:37,791 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:37,791 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-26 03:26:37,791 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:37,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:37,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1084276377, now seen corresponding path program 1 times [2021-03-26 03:26:37,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:37,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107920851] [2021-03-26 03:26:37,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:37,794 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:37,795 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:37,797 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:37,797 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:37,797 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-26 03:26:37,797 WARN L342 ceAbstractionStarter]: 21 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:37,797 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 22 thread instances. [2021-03-26 03:26:37,813 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:37,813 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:37,814 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:37,814 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:37,814 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:37,814 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:37,814 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:37,814 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:37,814 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:37,814 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:37,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 71 transitions, 714 flow [2021-03-26 03:26:37,821 INFO L129 PetriNetUnfolder]: 0/137 cut-off events. [2021-03-26 03:26:37,822 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:37,822 INFO L84 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 137 events. 0/137 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 447 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 0. Up to 23 conditions per place. [2021-03-26 03:26:37,822 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 71 transitions, 714 flow [2021-03-26 03:26:37,822 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 69 transitions, 710 flow [2021-03-26 03:26:37,822 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:37,822 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 69 transitions, 710 flow [2021-03-26 03:26:37,823 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 69 transitions, 710 flow [2021-03-26 03:26:37,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 114 places, 69 transitions, 710 flow [2021-03-26 03:26:37,828 INFO L129 PetriNetUnfolder]: 0/91 cut-off events. [2021-03-26 03:26:37,828 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:37,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 91 events. 0/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 281 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 0. Up to 23 conditions per place. [2021-03-26 03:26:37,830 INFO L142 LiptonReduction]: Number of co-enabled transitions 2948 [2021-03-26 03:26:38,480 INFO L154 LiptonReduction]: Checked pairs total: 1199 [2021-03-26 03:26:38,480 INFO L156 LiptonReduction]: Total number of compositions: 22 [2021-03-26 03:26:38,480 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 658 [2021-03-26 03:26:38,484 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:26:38,484 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:38,485 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:38,485 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:38,485 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:38,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:38,485 INFO L82 PathProgramCache]: Analyzing trace with hash 36259, now seen corresponding path program 1 times [2021-03-26 03:26:38,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:38,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627996183] [2021-03-26 03:26:38,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:38,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:38,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:38,492 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 03:26:38,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627996183] [2021-03-26 03:26:38,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:38,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:38,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237301197] [2021-03-26 03:26:38,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:38,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:38,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:38,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:38,493 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 93 [2021-03-26 03:26:38,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 47 transitions, 666 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 03:26:38,494 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:38,494 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 93 [2021-03-26 03:26:38,494 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:38,498 INFO L129 PetriNetUnfolder]: 0/46 cut-off events. [2021-03-26 03:26:38,498 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:38,498 INFO L84 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 46 events. 0/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 23/69 useless extension candidates. Maximal degree in co-relation 0. Up to 23 conditions per place. [2021-03-26 03:26:38,498 INFO L132 encePairwiseOnDemand]: 91/93 looper letters, 0 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2021-03-26 03:26:38,498 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 46 transitions, 666 flow [2021-03-26 03:26:38,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:38,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2021-03-26 03:26:38,499 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.974910394265233 [2021-03-26 03:26:38,499 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2021-03-26 03:26:38,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2021-03-26 03:26:38,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:38,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2021-03-26 03:26:38,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 03:26:38,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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 03:26:38,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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 03:26:38,503 INFO L185 Difference]: Start difference. First operand has 92 places, 47 transitions, 666 flow. Second operand 3 states and 272 transitions. [2021-03-26 03:26:38,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 46 transitions, 666 flow [2021-03-26 03:26:38,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 46 transitions, 204 flow, removed 231 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:38,509 INFO L241 Difference]: Finished difference. Result has 93 places, 46 transitions, 204 flow [2021-03-26 03:26:38,509 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=93, PETRI_TRANSITIONS=46} [2021-03-26 03:26:38,509 INFO L343 CegarLoopForPetriNet]: 92 programPoint places, 1 predicate places. [2021-03-26 03:26:38,509 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:38,509 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 46 transitions, 204 flow [2021-03-26 03:26:38,509 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 46 transitions, 204 flow [2021-03-26 03:26:38,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 46 transitions, 204 flow [2021-03-26 03:26:38,513 INFO L129 PetriNetUnfolder]: 0/46 cut-off events. [2021-03-26 03:26:38,514 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:38,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 46 events. 0/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 0. Up to 23 conditions per place. [2021-03-26 03:26:38,514 INFO L142 LiptonReduction]: Number of co-enabled transitions 968 [2021-03-26 03:26:38,516 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:38,516 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:38,516 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-26 03:26:38,517 INFO L480 AbstractCegarLoop]: Abstraction has has 93 places, 46 transitions, 204 flow [2021-03-26 03:26:38,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 03:26:38,517 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:38,517 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:38,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-26 03:26:38,517 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:38,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:38,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1905098359, now seen corresponding path program 1 times [2021-03-26 03:26:38,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:38,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833686957] [2021-03-26 03:26:38,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:38,521 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:38,522 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:38,526 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:38,526 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:38,526 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-26 03:26:38,526 WARN L342 ceAbstractionStarter]: 22 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:38,526 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 23 thread instances. [2021-03-26 03:26:38,547 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:38,547 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:38,548 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:38,548 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:38,548 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:38,548 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:38,548 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:38,548 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:38,548 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:38,548 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:38,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 121 places, 74 transitions, 769 flow [2021-03-26 03:26:38,557 INFO L129 PetriNetUnfolder]: 0/143 cut-off events. [2021-03-26 03:26:38,557 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:38,557 INFO L84 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 143 events. 0/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 469 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 0. Up to 24 conditions per place. [2021-03-26 03:26:38,557 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 74 transitions, 769 flow [2021-03-26 03:26:38,558 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 72 transitions, 765 flow [2021-03-26 03:26:38,558 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:38,558 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 72 transitions, 765 flow [2021-03-26 03:26:38,558 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 72 transitions, 765 flow [2021-03-26 03:26:38,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 119 places, 72 transitions, 765 flow [2021-03-26 03:26:38,564 INFO L129 PetriNetUnfolder]: 0/95 cut-off events. [2021-03-26 03:26:38,564 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:38,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 95 events. 0/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 275 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 0. Up to 24 conditions per place. [2021-03-26 03:26:38,566 INFO L142 LiptonReduction]: Number of co-enabled transitions 3220 [2021-03-26 03:26:39,309 INFO L154 LiptonReduction]: Checked pairs total: 1311 [2021-03-26 03:26:39,309 INFO L156 LiptonReduction]: Total number of compositions: 23 [2021-03-26 03:26:39,309 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 751 [2021-03-26 03:26:39,310 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:26:39,310 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:39,310 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:39,310 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:39,310 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:39,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:39,311 INFO L82 PathProgramCache]: Analyzing trace with hash 39331, now seen corresponding path program 1 times [2021-03-26 03:26:39,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:39,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625730881] [2021-03-26 03:26:39,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:39,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:39,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:39,316 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 03:26:39,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625730881] [2021-03-26 03:26:39,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:39,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:39,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245083606] [2021-03-26 03:26:39,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:39,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:39,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:39,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:39,317 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 97 [2021-03-26 03:26:39,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 49 transitions, 719 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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 03:26:39,317 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:39,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 97 [2021-03-26 03:26:39,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:39,322 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2021-03-26 03:26:39,322 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:39,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 396 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 24/72 useless extension candidates. Maximal degree in co-relation 0. Up to 24 conditions per place. [2021-03-26 03:26:39,322 INFO L132 encePairwiseOnDemand]: 95/97 looper letters, 0 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2021-03-26 03:26:39,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 48 transitions, 719 flow [2021-03-26 03:26:39,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:39,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:39,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2021-03-26 03:26:39,323 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9759450171821306 [2021-03-26 03:26:39,323 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 284 transitions. [2021-03-26 03:26:39,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 284 transitions. [2021-03-26 03:26:39,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:39,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 284 transitions. [2021-03-26 03:26:39,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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 03:26:39,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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 03:26:39,324 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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 03:26:39,324 INFO L185 Difference]: Start difference. First operand has 96 places, 49 transitions, 719 flow. Second operand 3 states and 284 transitions. [2021-03-26 03:26:39,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 48 transitions, 719 flow [2021-03-26 03:26:39,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 48 transitions, 213 flow, removed 253 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:39,328 INFO L241 Difference]: Finished difference. Result has 97 places, 48 transitions, 213 flow [2021-03-26 03:26:39,328 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=97, PETRI_TRANSITIONS=48} [2021-03-26 03:26:39,328 INFO L343 CegarLoopForPetriNet]: 96 programPoint places, 1 predicate places. [2021-03-26 03:26:39,328 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:39,328 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 48 transitions, 213 flow [2021-03-26 03:26:39,328 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 48 transitions, 213 flow [2021-03-26 03:26:39,328 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 97 places, 48 transitions, 213 flow [2021-03-26 03:26:39,331 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2021-03-26 03:26:39,331 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:39,331 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 0. Up to 24 conditions per place. [2021-03-26 03:26:39,332 INFO L142 LiptonReduction]: Number of co-enabled transitions 1058 [2021-03-26 03:26:39,333 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:39,333 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:39,333 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-26 03:26:39,334 INFO L480 AbstractCegarLoop]: Abstraction has has 97 places, 48 transitions, 213 flow [2021-03-26 03:26:39,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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 03:26:39,334 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:39,334 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:39,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-26 03:26:39,334 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:39,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:39,335 INFO L82 PathProgramCache]: Analyzing trace with hash -113046974, now seen corresponding path program 1 times [2021-03-26 03:26:39,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:39,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614456973] [2021-03-26 03:26:39,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:39,337 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:39,338 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:39,340 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:39,340 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:39,340 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-26 03:26:39,340 WARN L342 ceAbstractionStarter]: 23 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:39,340 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 24 thread instances. [2021-03-26 03:26:39,357 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:39,357 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:39,358 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:39,358 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:39,358 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:39,358 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:39,358 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:39,358 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:39,358 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:39,358 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:39,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 126 places, 77 transitions, 826 flow [2021-03-26 03:26:39,366 INFO L129 PetriNetUnfolder]: 0/149 cut-off events. [2021-03-26 03:26:39,366 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:39,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 149 events. 0/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 472 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 0. Up to 25 conditions per place. [2021-03-26 03:26:39,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 77 transitions, 826 flow [2021-03-26 03:26:39,367 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 75 transitions, 822 flow [2021-03-26 03:26:39,367 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:39,367 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 124 places, 75 transitions, 822 flow [2021-03-26 03:26:39,367 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 124 places, 75 transitions, 822 flow [2021-03-26 03:26:39,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 124 places, 75 transitions, 822 flow [2021-03-26 03:26:39,373 INFO L129 PetriNetUnfolder]: 0/99 cut-off events. [2021-03-26 03:26:39,373 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:39,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 99 events. 0/99 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 279 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 0. Up to 25 conditions per place. [2021-03-26 03:26:39,376 INFO L142 LiptonReduction]: Number of co-enabled transitions 3504 [2021-03-26 03:26:40,136 INFO L154 LiptonReduction]: Checked pairs total: 1428 [2021-03-26 03:26:40,136 INFO L156 LiptonReduction]: Total number of compositions: 24 [2021-03-26 03:26:40,136 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 769 [2021-03-26 03:26:40,137 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:26:40,137 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:40,137 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:40,137 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:40,137 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:40,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:40,138 INFO L82 PathProgramCache]: Analyzing trace with hash 42531, now seen corresponding path program 1 times [2021-03-26 03:26:40,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:40,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775593313] [2021-03-26 03:26:40,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:40,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:40,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:40,157 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 03:26:40,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775593313] [2021-03-26 03:26:40,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:40,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:40,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921691435] [2021-03-26 03:26:40,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:40,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:40,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:40,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:40,158 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 101 [2021-03-26 03:26:40,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 51 transitions, 774 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 03:26:40,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:40,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 101 [2021-03-26 03:26:40,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:40,164 INFO L129 PetriNetUnfolder]: 0/50 cut-off events. [2021-03-26 03:26:40,164 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:40,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 50 events. 0/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 25/75 useless extension candidates. Maximal degree in co-relation 0. Up to 25 conditions per place. [2021-03-26 03:26:40,164 INFO L132 encePairwiseOnDemand]: 99/101 looper letters, 0 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2021-03-26 03:26:40,164 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 50 transitions, 774 flow [2021-03-26 03:26:40,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:40,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:40,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2021-03-26 03:26:40,165 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.976897689768977 [2021-03-26 03:26:40,165 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2021-03-26 03:26:40,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2021-03-26 03:26:40,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:40,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2021-03-26 03:26:40,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 03:26:40,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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 03:26:40,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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 03:26:40,166 INFO L185 Difference]: Start difference. First operand has 100 places, 51 transitions, 774 flow. Second operand 3 states and 296 transitions. [2021-03-26 03:26:40,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 50 transitions, 774 flow [2021-03-26 03:26:40,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 50 transitions, 222 flow, removed 276 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:40,170 INFO L241 Difference]: Finished difference. Result has 101 places, 50 transitions, 222 flow [2021-03-26 03:26:40,170 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=101, PETRI_TRANSITIONS=50} [2021-03-26 03:26:40,170 INFO L343 CegarLoopForPetriNet]: 100 programPoint places, 1 predicate places. [2021-03-26 03:26:40,170 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:40,170 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 50 transitions, 222 flow [2021-03-26 03:26:40,170 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 50 transitions, 222 flow [2021-03-26 03:26:40,171 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 50 transitions, 222 flow [2021-03-26 03:26:40,175 INFO L129 PetriNetUnfolder]: 0/50 cut-off events. [2021-03-26 03:26:40,175 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:40,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 50 events. 0/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 0. Up to 25 conditions per place. [2021-03-26 03:26:40,176 INFO L142 LiptonReduction]: Number of co-enabled transitions 1152 [2021-03-26 03:26:40,177 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:40,177 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:40,177 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-26 03:26:40,178 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 50 transitions, 222 flow [2021-03-26 03:26:40,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 03:26:40,178 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:40,178 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:40,178 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-26 03:26:40,178 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:40,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:40,178 INFO L82 PathProgramCache]: Analyzing trace with hash -2014993076, now seen corresponding path program 1 times [2021-03-26 03:26:40,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:40,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922416260] [2021-03-26 03:26:40,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:40,182 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:40,188 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:40,190 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:40,190 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:40,190 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-26 03:26:40,190 WARN L342 ceAbstractionStarter]: 24 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:40,190 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 25 thread instances. [2021-03-26 03:26:40,206 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:40,206 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:40,206 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:40,206 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:40,206 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:40,206 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:40,206 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:40,206 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:40,206 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:40,207 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:40,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 131 places, 80 transitions, 885 flow [2021-03-26 03:26:40,216 INFO L129 PetriNetUnfolder]: 0/155 cut-off events. [2021-03-26 03:26:40,216 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:40,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 155 events. 0/155 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 516 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 0. Up to 26 conditions per place. [2021-03-26 03:26:40,216 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 80 transitions, 885 flow [2021-03-26 03:26:40,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 78 transitions, 881 flow [2021-03-26 03:26:40,217 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:40,217 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 78 transitions, 881 flow [2021-03-26 03:26:40,217 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 78 transitions, 881 flow [2021-03-26 03:26:40,217 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 129 places, 78 transitions, 881 flow [2021-03-26 03:26:40,224 INFO L129 PetriNetUnfolder]: 0/103 cut-off events. [2021-03-26 03:26:40,224 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:40,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 103 events. 0/103 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 261 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 0. Up to 26 conditions per place. [2021-03-26 03:26:40,226 INFO L142 LiptonReduction]: Number of co-enabled transitions 3800 [2021-03-26 03:26:41,091 INFO L154 LiptonReduction]: Checked pairs total: 1550 [2021-03-26 03:26:41,091 INFO L156 LiptonReduction]: Total number of compositions: 25 [2021-03-26 03:26:41,091 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 874 [2021-03-26 03:26:41,092 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:26:41,092 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:41,092 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:41,092 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:41,092 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:41,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:41,093 INFO L82 PathProgramCache]: Analyzing trace with hash 45859, now seen corresponding path program 1 times [2021-03-26 03:26:41,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:41,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51959146] [2021-03-26 03:26:41,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:41,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:41,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:41,098 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 03:26:41,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51959146] [2021-03-26 03:26:41,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:41,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:41,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557749770] [2021-03-26 03:26:41,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:41,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:41,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:41,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:41,099 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 105 [2021-03-26 03:26:41,099 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 53 transitions, 831 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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 03:26:41,099 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:41,099 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 105 [2021-03-26 03:26:41,099 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:41,105 INFO L129 PetriNetUnfolder]: 0/52 cut-off events. [2021-03-26 03:26:41,105 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:41,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 52 events. 0/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 26/78 useless extension candidates. Maximal degree in co-relation 0. Up to 26 conditions per place. [2021-03-26 03:26:41,105 INFO L132 encePairwiseOnDemand]: 103/105 looper letters, 0 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2021-03-26 03:26:41,105 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 52 transitions, 831 flow [2021-03-26 03:26:41,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:41,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:41,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2021-03-26 03:26:41,106 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9777777777777777 [2021-03-26 03:26:41,106 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2021-03-26 03:26:41,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2021-03-26 03:26:41,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:41,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2021-03-26 03:26:41,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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 03:26:41,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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 03:26:41,107 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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 03:26:41,107 INFO L185 Difference]: Start difference. First operand has 104 places, 53 transitions, 831 flow. Second operand 3 states and 308 transitions. [2021-03-26 03:26:41,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 52 transitions, 831 flow [2021-03-26 03:26:41,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 52 transitions, 231 flow, removed 300 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:41,112 INFO L241 Difference]: Finished difference. Result has 105 places, 52 transitions, 231 flow [2021-03-26 03:26:41,112 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=105, PETRI_TRANSITIONS=52} [2021-03-26 03:26:41,112 INFO L343 CegarLoopForPetriNet]: 104 programPoint places, 1 predicate places. [2021-03-26 03:26:41,112 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:41,112 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 52 transitions, 231 flow [2021-03-26 03:26:41,112 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 52 transitions, 231 flow [2021-03-26 03:26:41,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 52 transitions, 231 flow [2021-03-26 03:26:41,115 INFO L129 PetriNetUnfolder]: 0/52 cut-off events. [2021-03-26 03:26:41,115 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:41,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 52 events. 0/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 0. Up to 26 conditions per place. [2021-03-26 03:26:41,116 INFO L142 LiptonReduction]: Number of co-enabled transitions 1250 [2021-03-26 03:26:41,117 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:41,117 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:41,117 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-26 03:26:41,118 INFO L480 AbstractCegarLoop]: Abstraction has has 105 places, 52 transitions, 231 flow [2021-03-26 03:26:41,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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 03:26:41,118 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:41,118 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:41,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-26 03:26:41,118 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:41,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:41,118 INFO L82 PathProgramCache]: Analyzing trace with hash -4577491, now seen corresponding path program 1 times [2021-03-26 03:26:41,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:41,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124337026] [2021-03-26 03:26:41,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:41,122 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:41,123 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:41,126 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:41,126 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:41,126 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-26 03:26:41,126 WARN L342 ceAbstractionStarter]: 25 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:41,126 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 26 thread instances. [2021-03-26 03:26:41,145 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:41,145 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:41,145 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:41,145 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:41,146 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:41,146 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:41,146 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:41,146 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:41,146 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:41,146 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:41,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 136 places, 83 transitions, 946 flow [2021-03-26 03:26:41,155 INFO L129 PetriNetUnfolder]: 0/161 cut-off events. [2021-03-26 03:26:41,155 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:41,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 161 events. 0/161 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 506 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 0. Up to 27 conditions per place. [2021-03-26 03:26:41,155 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 83 transitions, 946 flow [2021-03-26 03:26:41,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 81 transitions, 942 flow [2021-03-26 03:26:41,157 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:41,157 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 81 transitions, 942 flow [2021-03-26 03:26:41,157 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 81 transitions, 942 flow [2021-03-26 03:26:41,157 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 134 places, 81 transitions, 942 flow [2021-03-26 03:26:41,164 INFO L129 PetriNetUnfolder]: 0/107 cut-off events. [2021-03-26 03:26:41,164 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:41,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 537 conditions, 107 events. 0/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 345 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 0. Up to 27 conditions per place. [2021-03-26 03:26:41,167 INFO L142 LiptonReduction]: Number of co-enabled transitions 4108 [2021-03-26 03:26:42,031 INFO L154 LiptonReduction]: Checked pairs total: 1677 [2021-03-26 03:26:42,032 INFO L156 LiptonReduction]: Total number of compositions: 26 [2021-03-26 03:26:42,032 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 875 [2021-03-26 03:26:42,032 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:26:42,032 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:42,032 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:42,032 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:42,033 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:42,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:42,033 INFO L82 PathProgramCache]: Analyzing trace with hash 49315, now seen corresponding path program 1 times [2021-03-26 03:26:42,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:42,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274103168] [2021-03-26 03:26:42,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:42,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:42,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:42,039 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 03:26:42,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274103168] [2021-03-26 03:26:42,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:42,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:42,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239011914] [2021-03-26 03:26:42,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:42,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:42,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:42,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:42,040 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 109 [2021-03-26 03:26:42,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 55 transitions, 890 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 03:26:42,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:42,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 109 [2021-03-26 03:26:42,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:42,046 INFO L129 PetriNetUnfolder]: 0/54 cut-off events. [2021-03-26 03:26:42,046 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:42,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 54 events. 0/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 27/81 useless extension candidates. Maximal degree in co-relation 0. Up to 27 conditions per place. [2021-03-26 03:26:42,046 INFO L132 encePairwiseOnDemand]: 107/109 looper letters, 0 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2021-03-26 03:26:42,046 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 54 transitions, 890 flow [2021-03-26 03:26:42,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:42,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:42,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 320 transitions. [2021-03-26 03:26:42,047 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9785932721712538 [2021-03-26 03:26:42,047 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 320 transitions. [2021-03-26 03:26:42,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 320 transitions. [2021-03-26 03:26:42,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:42,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 320 transitions. [2021-03-26 03:26:42,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 03:26:42,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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 03:26:42,048 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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 03:26:42,048 INFO L185 Difference]: Start difference. First operand has 108 places, 55 transitions, 890 flow. Second operand 3 states and 320 transitions. [2021-03-26 03:26:42,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 54 transitions, 890 flow [2021-03-26 03:26:42,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 54 transitions, 240 flow, removed 325 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:42,053 INFO L241 Difference]: Finished difference. Result has 109 places, 54 transitions, 240 flow [2021-03-26 03:26:42,054 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=109, PETRI_TRANSITIONS=54} [2021-03-26 03:26:42,054 INFO L343 CegarLoopForPetriNet]: 108 programPoint places, 1 predicate places. [2021-03-26 03:26:42,054 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:42,054 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 54 transitions, 240 flow [2021-03-26 03:26:42,054 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 54 transitions, 240 flow [2021-03-26 03:26:42,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 109 places, 54 transitions, 240 flow [2021-03-26 03:26:42,057 INFO L129 PetriNetUnfolder]: 0/54 cut-off events. [2021-03-26 03:26:42,057 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:42,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 54 events. 0/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 58 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 0. Up to 27 conditions per place. [2021-03-26 03:26:42,058 INFO L142 LiptonReduction]: Number of co-enabled transitions 1352 [2021-03-26 03:26:42,059 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:42,059 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:42,059 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-26 03:26:42,060 INFO L480 AbstractCegarLoop]: Abstraction has has 109 places, 54 transitions, 240 flow [2021-03-26 03:26:42,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 03:26:42,060 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:42,060 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:42,060 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-26 03:26:42,060 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:42,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:42,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1477290255, now seen corresponding path program 1 times [2021-03-26 03:26:42,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:42,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515688463] [2021-03-26 03:26:42,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:42,064 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:42,065 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:42,067 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:42,067 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:42,067 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-03-26 03:26:42,067 WARN L342 ceAbstractionStarter]: 26 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:42,067 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 27 thread instances. [2021-03-26 03:26:42,086 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:42,087 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:42,087 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:42,087 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:42,087 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:42,087 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:42,087 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:42,087 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:42,087 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:42,087 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:42,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 141 places, 86 transitions, 1009 flow [2021-03-26 03:26:42,097 INFO L129 PetriNetUnfolder]: 0/167 cut-off events. [2021-03-26 03:26:42,097 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:42,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 167 events. 0/167 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 561 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 0. Up to 28 conditions per place. [2021-03-26 03:26:42,098 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 86 transitions, 1009 flow [2021-03-26 03:26:42,098 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 84 transitions, 1005 flow [2021-03-26 03:26:42,098 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:42,098 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 84 transitions, 1005 flow [2021-03-26 03:26:42,099 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 84 transitions, 1005 flow [2021-03-26 03:26:42,099 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 139 places, 84 transitions, 1005 flow [2021-03-26 03:26:42,106 INFO L129 PetriNetUnfolder]: 0/111 cut-off events. [2021-03-26 03:26:42,106 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:42,106 INFO L84 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 111 events. 0/111 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 304 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 0. Up to 28 conditions per place. [2021-03-26 03:26:42,108 INFO L142 LiptonReduction]: Number of co-enabled transitions 4428 [2021-03-26 03:26:43,039 INFO L154 LiptonReduction]: Checked pairs total: 1809 [2021-03-26 03:26:43,039 INFO L156 LiptonReduction]: Total number of compositions: 27 [2021-03-26 03:26:43,040 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 942 [2021-03-26 03:26:43,040 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:26:43,040 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:43,040 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:43,041 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:43,041 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:43,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:43,041 INFO L82 PathProgramCache]: Analyzing trace with hash 52899, now seen corresponding path program 1 times [2021-03-26 03:26:43,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:43,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250364010] [2021-03-26 03:26:43,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:43,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:43,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:43,047 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 03:26:43,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250364010] [2021-03-26 03:26:43,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:43,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:43,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318368283] [2021-03-26 03:26:43,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:43,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:43,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:43,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:43,048 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 113 [2021-03-26 03:26:43,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 57 transitions, 951 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 03:26:43,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:43,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 113 [2021-03-26 03:26:43,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:43,054 INFO L129 PetriNetUnfolder]: 0/56 cut-off events. [2021-03-26 03:26:43,054 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:43,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 56 events. 0/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 28/84 useless extension candidates. Maximal degree in co-relation 0. Up to 28 conditions per place. [2021-03-26 03:26:43,054 INFO L132 encePairwiseOnDemand]: 111/113 looper letters, 0 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2021-03-26 03:26:43,054 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 56 transitions, 951 flow [2021-03-26 03:26:43,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:43,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:43,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 332 transitions. [2021-03-26 03:26:43,055 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9793510324483776 [2021-03-26 03:26:43,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 332 transitions. [2021-03-26 03:26:43,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 332 transitions. [2021-03-26 03:26:43,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:43,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 332 transitions. [2021-03-26 03:26:43,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 03:26:43,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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 03:26:43,056 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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 03:26:43,056 INFO L185 Difference]: Start difference. First operand has 112 places, 57 transitions, 951 flow. Second operand 3 states and 332 transitions. [2021-03-26 03:26:43,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 56 transitions, 951 flow [2021-03-26 03:26:43,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 56 transitions, 249 flow, removed 351 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:43,061 INFO L241 Difference]: Finished difference. Result has 113 places, 56 transitions, 249 flow [2021-03-26 03:26:43,061 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=113, PETRI_TRANSITIONS=56} [2021-03-26 03:26:43,061 INFO L343 CegarLoopForPetriNet]: 112 programPoint places, 1 predicate places. [2021-03-26 03:26:43,061 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:43,062 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 56 transitions, 249 flow [2021-03-26 03:26:43,062 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 56 transitions, 249 flow [2021-03-26 03:26:43,062 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 113 places, 56 transitions, 249 flow [2021-03-26 03:26:43,065 INFO L129 PetriNetUnfolder]: 0/56 cut-off events. [2021-03-26 03:26:43,065 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:43,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 56 events. 0/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 0. Up to 28 conditions per place. [2021-03-26 03:26:43,066 INFO L142 LiptonReduction]: Number of co-enabled transitions 1458 [2021-03-26 03:26:43,067 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:43,067 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:43,067 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-26 03:26:43,068 INFO L480 AbstractCegarLoop]: Abstraction has has 113 places, 56 transitions, 249 flow [2021-03-26 03:26:43,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 03:26:43,068 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:43,068 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:43,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-03-26 03:26:43,068 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:43,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:43,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1932848600, now seen corresponding path program 1 times [2021-03-26 03:26:43,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:43,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996644238] [2021-03-26 03:26:43,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:43,072 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:43,073 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:43,075 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:43,075 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:43,075 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-03-26 03:26:43,075 WARN L342 ceAbstractionStarter]: 27 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:43,075 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 28 thread instances. [2021-03-26 03:26:43,095 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:43,096 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:43,096 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:43,096 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:43,096 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:43,096 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:43,096 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:43,096 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:43,096 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:43,096 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:43,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 146 places, 89 transitions, 1074 flow [2021-03-26 03:26:43,107 INFO L129 PetriNetUnfolder]: 0/173 cut-off events. [2021-03-26 03:26:43,107 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:43,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 173 events. 0/173 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 571 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 0. Up to 29 conditions per place. [2021-03-26 03:26:43,107 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 89 transitions, 1074 flow [2021-03-26 03:26:43,108 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 87 transitions, 1070 flow [2021-03-26 03:26:43,108 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:43,108 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 87 transitions, 1070 flow [2021-03-26 03:26:43,108 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 87 transitions, 1070 flow [2021-03-26 03:26:43,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 144 places, 87 transitions, 1070 flow [2021-03-26 03:26:43,116 INFO L129 PetriNetUnfolder]: 0/115 cut-off events. [2021-03-26 03:26:43,116 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:43,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 115 events. 0/115 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 361 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 0. Up to 29 conditions per place. [2021-03-26 03:26:43,118 INFO L142 LiptonReduction]: Number of co-enabled transitions 4760 [2021-03-26 03:26:44,114 INFO L154 LiptonReduction]: Checked pairs total: 1946 [2021-03-26 03:26:44,115 INFO L156 LiptonReduction]: Total number of compositions: 28 [2021-03-26 03:26:44,115 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1007 [2021-03-26 03:26:44,116 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:26:44,116 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:44,116 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:44,116 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:44,116 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:44,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:44,116 INFO L82 PathProgramCache]: Analyzing trace with hash 56611, now seen corresponding path program 1 times [2021-03-26 03:26:44,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:44,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188661247] [2021-03-26 03:26:44,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:44,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:44,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:44,122 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 03:26:44,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188661247] [2021-03-26 03:26:44,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:44,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:44,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709518210] [2021-03-26 03:26:44,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:44,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:44,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:44,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:44,123 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 117 [2021-03-26 03:26:44,123 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 59 transitions, 1014 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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 03:26:44,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:44,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 117 [2021-03-26 03:26:44,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:44,129 INFO L129 PetriNetUnfolder]: 0/58 cut-off events. [2021-03-26 03:26:44,129 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:44,129 INFO L84 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 58 events. 0/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 29/87 useless extension candidates. Maximal degree in co-relation 0. Up to 29 conditions per place. [2021-03-26 03:26:44,130 INFO L132 encePairwiseOnDemand]: 115/117 looper letters, 0 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2021-03-26 03:26:44,130 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 58 transitions, 1014 flow [2021-03-26 03:26:44,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:44,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:44,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2021-03-26 03:26:44,130 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.98005698005698 [2021-03-26 03:26:44,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2021-03-26 03:26:44,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2021-03-26 03:26:44,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:44,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2021-03-26 03:26:44,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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 03:26:44,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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 03:26:44,131 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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 03:26:44,131 INFO L185 Difference]: Start difference. First operand has 116 places, 59 transitions, 1014 flow. Second operand 3 states and 344 transitions. [2021-03-26 03:26:44,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 58 transitions, 1014 flow [2021-03-26 03:26:44,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 58 transitions, 258 flow, removed 378 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:44,137 INFO L241 Difference]: Finished difference. Result has 117 places, 58 transitions, 258 flow [2021-03-26 03:26:44,138 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=117, PETRI_TRANSITIONS=58} [2021-03-26 03:26:44,138 INFO L343 CegarLoopForPetriNet]: 116 programPoint places, 1 predicate places. [2021-03-26 03:26:44,138 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:44,138 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 58 transitions, 258 flow [2021-03-26 03:26:44,138 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 58 transitions, 258 flow [2021-03-26 03:26:44,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 58 transitions, 258 flow [2021-03-26 03:26:44,142 INFO L129 PetriNetUnfolder]: 0/58 cut-off events. [2021-03-26 03:26:44,142 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:44,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 58 events. 0/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 0. Up to 29 conditions per place. [2021-03-26 03:26:44,142 INFO L142 LiptonReduction]: Number of co-enabled transitions 1568 [2021-03-26 03:26:44,144 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:44,144 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:44,144 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-26 03:26:44,144 INFO L480 AbstractCegarLoop]: Abstraction has has 117 places, 58 transitions, 258 flow [2021-03-26 03:26:44,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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 03:26:44,145 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:44,145 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:44,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-03-26 03:26:44,145 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:44,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:44,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1008561454, now seen corresponding path program 1 times [2021-03-26 03:26:44,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:44,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551272232] [2021-03-26 03:26:44,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:44,149 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:44,150 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:44,152 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:44,152 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:44,152 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-03-26 03:26:44,152 WARN L342 ceAbstractionStarter]: 28 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:44,152 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 29 thread instances. [2021-03-26 03:26:44,171 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:44,171 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:44,171 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:44,171 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:44,171 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:44,172 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:44,172 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:44,172 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:44,172 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:44,172 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:44,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 151 places, 92 transitions, 1141 flow [2021-03-26 03:26:44,183 INFO L129 PetriNetUnfolder]: 0/179 cut-off events. [2021-03-26 03:26:44,183 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:44,183 INFO L84 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 179 events. 0/179 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 587 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 0. Up to 30 conditions per place. [2021-03-26 03:26:44,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 92 transitions, 1141 flow [2021-03-26 03:26:44,184 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 90 transitions, 1137 flow [2021-03-26 03:26:44,184 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:44,184 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 90 transitions, 1137 flow [2021-03-26 03:26:44,184 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 90 transitions, 1137 flow [2021-03-26 03:26:44,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 90 transitions, 1137 flow [2021-03-26 03:26:44,193 INFO L129 PetriNetUnfolder]: 0/119 cut-off events. [2021-03-26 03:26:44,193 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:44,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 119 events. 0/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 333 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 0. Up to 30 conditions per place. [2021-03-26 03:26:44,196 INFO L142 LiptonReduction]: Number of co-enabled transitions 5104 [2021-03-26 03:26:45,294 INFO L154 LiptonReduction]: Checked pairs total: 2088 [2021-03-26 03:26:45,294 INFO L156 LiptonReduction]: Total number of compositions: 29 [2021-03-26 03:26:45,294 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1110 [2021-03-26 03:26:45,295 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:26:45,295 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:45,295 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:45,295 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:45,295 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:45,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:45,296 INFO L82 PathProgramCache]: Analyzing trace with hash 60451, now seen corresponding path program 1 times [2021-03-26 03:26:45,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:45,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923004844] [2021-03-26 03:26:45,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:45,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:45,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:45,302 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 03:26:45,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923004844] [2021-03-26 03:26:45,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:45,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:45,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174399606] [2021-03-26 03:26:45,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:45,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:45,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:45,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:45,303 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 121 [2021-03-26 03:26:45,303 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 61 transitions, 1079 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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 03:26:45,303 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:45,303 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 121 [2021-03-26 03:26:45,303 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:45,311 INFO L129 PetriNetUnfolder]: 0/60 cut-off events. [2021-03-26 03:26:45,311 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:45,311 INFO L84 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 60 events. 0/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 30/90 useless extension candidates. Maximal degree in co-relation 0. Up to 30 conditions per place. [2021-03-26 03:26:45,312 INFO L132 encePairwiseOnDemand]: 119/121 looper letters, 0 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2021-03-26 03:26:45,312 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 60 transitions, 1079 flow [2021-03-26 03:26:45,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:45,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:45,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2021-03-26 03:26:45,313 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9807162534435262 [2021-03-26 03:26:45,313 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2021-03-26 03:26:45,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2021-03-26 03:26:45,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:45,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2021-03-26 03:26:45,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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 03:26:45,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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 03:26:45,314 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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 03:26:45,314 INFO L185 Difference]: Start difference. First operand has 120 places, 61 transitions, 1079 flow. Second operand 3 states and 356 transitions. [2021-03-26 03:26:45,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 60 transitions, 1079 flow [2021-03-26 03:26:45,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 60 transitions, 267 flow, removed 406 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:45,322 INFO L241 Difference]: Finished difference. Result has 121 places, 60 transitions, 267 flow [2021-03-26 03:26:45,322 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=267, PETRI_PLACES=121, PETRI_TRANSITIONS=60} [2021-03-26 03:26:45,322 INFO L343 CegarLoopForPetriNet]: 120 programPoint places, 1 predicate places. [2021-03-26 03:26:45,322 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:45,322 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 60 transitions, 267 flow [2021-03-26 03:26:45,322 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 60 transitions, 267 flow [2021-03-26 03:26:45,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 121 places, 60 transitions, 267 flow [2021-03-26 03:26:45,327 INFO L129 PetriNetUnfolder]: 0/60 cut-off events. [2021-03-26 03:26:45,327 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:45,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 60 events. 0/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 0. Up to 30 conditions per place. [2021-03-26 03:26:45,328 INFO L142 LiptonReduction]: Number of co-enabled transitions 1682 [2021-03-26 03:26:45,330 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:45,330 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:45,330 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-26 03:26:45,331 INFO L480 AbstractCegarLoop]: Abstraction has has 121 places, 60 transitions, 267 flow [2021-03-26 03:26:45,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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 03:26:45,331 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:45,331 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:45,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-03-26 03:26:45,331 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:45,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:45,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1949254963, now seen corresponding path program 1 times [2021-03-26 03:26:45,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:45,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251236571] [2021-03-26 03:26:45,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:45,335 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:45,336 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:45,339 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:45,339 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:45,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-03-26 03:26:45,340 WARN L342 ceAbstractionStarter]: 29 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:45,340 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 30 thread instances. [2021-03-26 03:26:45,364 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:45,364 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:45,365 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:45,365 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:45,365 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:45,365 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:45,365 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:45,365 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:45,365 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:45,365 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:45,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 156 places, 95 transitions, 1210 flow [2021-03-26 03:26:45,379 INFO L129 PetriNetUnfolder]: 0/185 cut-off events. [2021-03-26 03:26:45,380 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:45,380 INFO L84 FinitePrefix]: Finished finitePrefix Result has 741 conditions, 185 events. 0/185 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 599 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 0. Up to 31 conditions per place. [2021-03-26 03:26:45,380 INFO L82 GeneralOperation]: Start removeDead. Operand has 156 places, 95 transitions, 1210 flow [2021-03-26 03:26:45,381 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 93 transitions, 1206 flow [2021-03-26 03:26:45,381 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:45,381 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 93 transitions, 1206 flow [2021-03-26 03:26:45,381 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 93 transitions, 1206 flow [2021-03-26 03:26:45,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 154 places, 93 transitions, 1206 flow [2021-03-26 03:26:45,392 INFO L129 PetriNetUnfolder]: 0/123 cut-off events. [2021-03-26 03:26:45,392 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:45,392 INFO L84 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 123 events. 0/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 365 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 0. Up to 31 conditions per place. [2021-03-26 03:26:45,396 INFO L142 LiptonReduction]: Number of co-enabled transitions 5460 [2021-03-26 03:26:46,554 INFO L154 LiptonReduction]: Checked pairs total: 2235 [2021-03-26 03:26:46,554 INFO L156 LiptonReduction]: Total number of compositions: 30 [2021-03-26 03:26:46,555 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1174 [2021-03-26 03:26:46,555 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:26:46,555 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:46,555 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:46,556 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:46,556 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:46,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:46,556 INFO L82 PathProgramCache]: Analyzing trace with hash 64419, now seen corresponding path program 1 times [2021-03-26 03:26:46,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:46,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852859565] [2021-03-26 03:26:46,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:46,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:46,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:46,566 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 03:26:46,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852859565] [2021-03-26 03:26:46,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:46,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:46,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130392450] [2021-03-26 03:26:46,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:46,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:46,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:46,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:46,567 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 125 [2021-03-26 03:26:46,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 63 transitions, 1146 flow. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 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 03:26:46,568 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:46,568 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 125 [2021-03-26 03:26:46,568 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:46,576 INFO L129 PetriNetUnfolder]: 0/62 cut-off events. [2021-03-26 03:26:46,576 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:46,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 62 events. 0/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 31/93 useless extension candidates. Maximal degree in co-relation 0. Up to 31 conditions per place. [2021-03-26 03:26:46,576 INFO L132 encePairwiseOnDemand]: 123/125 looper letters, 0 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2021-03-26 03:26:46,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 62 transitions, 1146 flow [2021-03-26 03:26:46,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:46,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:46,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 368 transitions. [2021-03-26 03:26:46,577 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9813333333333333 [2021-03-26 03:26:46,577 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 368 transitions. [2021-03-26 03:26:46,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 368 transitions. [2021-03-26 03:26:46,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:46,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 368 transitions. [2021-03-26 03:26:46,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 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 03:26:46,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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 03:26:46,588 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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 03:26:46,588 INFO L185 Difference]: Start difference. First operand has 124 places, 63 transitions, 1146 flow. Second operand 3 states and 368 transitions. [2021-03-26 03:26:46,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 62 transitions, 1146 flow [2021-03-26 03:26:46,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 62 transitions, 276 flow, removed 435 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:46,596 INFO L241 Difference]: Finished difference. Result has 125 places, 62 transitions, 276 flow [2021-03-26 03:26:46,597 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=276, PETRI_PLACES=125, PETRI_TRANSITIONS=62} [2021-03-26 03:26:46,597 INFO L343 CegarLoopForPetriNet]: 124 programPoint places, 1 predicate places. [2021-03-26 03:26:46,597 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:46,597 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 125 places, 62 transitions, 276 flow [2021-03-26 03:26:46,597 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 125 places, 62 transitions, 276 flow [2021-03-26 03:26:46,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 125 places, 62 transitions, 276 flow [2021-03-26 03:26:46,601 INFO L129 PetriNetUnfolder]: 0/62 cut-off events. [2021-03-26 03:26:46,602 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:46,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 62 events. 0/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 0. Up to 31 conditions per place. [2021-03-26 03:26:46,602 INFO L142 LiptonReduction]: Number of co-enabled transitions 1800 [2021-03-26 03:26:46,604 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:46,604 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:46,604 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-26 03:26:46,605 INFO L480 AbstractCegarLoop]: Abstraction has has 125 places, 62 transitions, 276 flow [2021-03-26 03:26:46,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 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 03:26:46,605 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:46,605 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:46,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-03-26 03:26:46,605 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:46,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:46,606 INFO L82 PathProgramCache]: Analyzing trace with hash 2018076821, now seen corresponding path program 1 times [2021-03-26 03:26:46,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:46,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267406662] [2021-03-26 03:26:46,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:46,609 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:46,611 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:46,613 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:46,614 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:46,614 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-03-26 03:26:46,614 WARN L342 ceAbstractionStarter]: 30 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:46,614 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 31 thread instances. [2021-03-26 03:26:46,633 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:46,634 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:46,634 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:46,634 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:46,634 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:46,634 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:46,634 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:46,634 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:46,634 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:46,634 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:46,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 161 places, 98 transitions, 1281 flow [2021-03-26 03:26:46,656 INFO L129 PetriNetUnfolder]: 0/191 cut-off events. [2021-03-26 03:26:46,656 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:46,656 INFO L84 FinitePrefix]: Finished finitePrefix Result has 781 conditions, 191 events. 0/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 620 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 0. Up to 32 conditions per place. [2021-03-26 03:26:46,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 98 transitions, 1281 flow [2021-03-26 03:26:46,657 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 96 transitions, 1277 flow [2021-03-26 03:26:46,657 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:46,657 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 96 transitions, 1277 flow [2021-03-26 03:26:46,657 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 96 transitions, 1277 flow [2021-03-26 03:26:46,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 159 places, 96 transitions, 1277 flow [2021-03-26 03:26:46,670 INFO L129 PetriNetUnfolder]: 0/127 cut-off events. [2021-03-26 03:26:46,670 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:46,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 717 conditions, 127 events. 0/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 353 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 0. Up to 32 conditions per place. [2021-03-26 03:26:46,673 INFO L142 LiptonReduction]: Number of co-enabled transitions 5828 [2021-03-26 03:26:47,922 INFO L154 LiptonReduction]: Checked pairs total: 2387 [2021-03-26 03:26:47,923 INFO L156 LiptonReduction]: Total number of compositions: 31 [2021-03-26 03:26:47,923 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1266 [2021-03-26 03:26:47,923 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:26:47,923 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:47,924 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:47,924 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:47,924 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:47,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:47,924 INFO L82 PathProgramCache]: Analyzing trace with hash 68515, now seen corresponding path program 1 times [2021-03-26 03:26:47,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:47,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741424527] [2021-03-26 03:26:47,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:47,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:47,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:47,930 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 03:26:47,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741424527] [2021-03-26 03:26:47,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:47,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:47,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479961544] [2021-03-26 03:26:47,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:47,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:47,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:47,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:47,931 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 129 [2021-03-26 03:26:47,931 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 65 transitions, 1215 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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 03:26:47,931 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:47,931 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 129 [2021-03-26 03:26:47,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:47,939 INFO L129 PetriNetUnfolder]: 0/64 cut-off events. [2021-03-26 03:26:47,939 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:47,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 64 events. 0/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 32/96 useless extension candidates. Maximal degree in co-relation 0. Up to 32 conditions per place. [2021-03-26 03:26:47,939 INFO L132 encePairwiseOnDemand]: 127/129 looper letters, 0 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2021-03-26 03:26:47,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 64 transitions, 1215 flow [2021-03-26 03:26:47,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:47,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:47,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 380 transitions. [2021-03-26 03:26:47,940 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9819121447028424 [2021-03-26 03:26:47,940 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 380 transitions. [2021-03-26 03:26:47,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 380 transitions. [2021-03-26 03:26:47,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:47,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 380 transitions. [2021-03-26 03:26:47,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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 03:26:47,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 03:26:47,942 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 03:26:47,942 INFO L185 Difference]: Start difference. First operand has 128 places, 65 transitions, 1215 flow. Second operand 3 states and 380 transitions. [2021-03-26 03:26:47,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 64 transitions, 1215 flow [2021-03-26 03:26:47,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 64 transitions, 285 flow, removed 465 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:47,950 INFO L241 Difference]: Finished difference. Result has 129 places, 64 transitions, 285 flow [2021-03-26 03:26:47,950 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=129, PETRI_TRANSITIONS=64} [2021-03-26 03:26:47,950 INFO L343 CegarLoopForPetriNet]: 128 programPoint places, 1 predicate places. [2021-03-26 03:26:47,950 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:47,950 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 64 transitions, 285 flow [2021-03-26 03:26:47,950 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 64 transitions, 285 flow [2021-03-26 03:26:47,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 129 places, 64 transitions, 285 flow [2021-03-26 03:26:47,955 INFO L129 PetriNetUnfolder]: 0/64 cut-off events. [2021-03-26 03:26:47,955 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:47,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 64 events. 0/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 0. Up to 32 conditions per place. [2021-03-26 03:26:47,956 INFO L142 LiptonReduction]: Number of co-enabled transitions 1922 [2021-03-26 03:26:47,957 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:47,958 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:47,958 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-26 03:26:47,958 INFO L480 AbstractCegarLoop]: Abstraction has has 129 places, 64 transitions, 285 flow [2021-03-26 03:26:47,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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 03:26:47,958 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:47,958 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:47,958 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-03-26 03:26:47,959 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:47,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:47,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1642907058, now seen corresponding path program 1 times [2021-03-26 03:26:47,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:47,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942858046] [2021-03-26 03:26:47,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:47,962 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:47,963 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:47,966 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:47,966 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:47,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-03-26 03:26:47,966 WARN L342 ceAbstractionStarter]: 31 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:47,966 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 32 thread instances. [2021-03-26 03:26:47,991 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:47,991 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:47,992 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:47,992 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:47,992 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:47,992 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:47,992 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:47,992 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:47,992 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:47,992 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:47,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 166 places, 101 transitions, 1354 flow [2021-03-26 03:26:48,007 INFO L129 PetriNetUnfolder]: 0/197 cut-off events. [2021-03-26 03:26:48,007 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:48,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 822 conditions, 197 events. 0/197 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 637 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 0. Up to 33 conditions per place. [2021-03-26 03:26:48,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 101 transitions, 1354 flow [2021-03-26 03:26:48,008 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 99 transitions, 1350 flow [2021-03-26 03:26:48,008 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:48,008 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 99 transitions, 1350 flow [2021-03-26 03:26:48,008 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 99 transitions, 1350 flow [2021-03-26 03:26:48,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 164 places, 99 transitions, 1350 flow [2021-03-26 03:26:48,019 INFO L129 PetriNetUnfolder]: 0/131 cut-off events. [2021-03-26 03:26:48,019 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:48,019 INFO L84 FinitePrefix]: Finished finitePrefix Result has 756 conditions, 131 events. 0/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 361 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 0. Up to 33 conditions per place. [2021-03-26 03:26:48,022 INFO L142 LiptonReduction]: Number of co-enabled transitions 6208 [2021-03-26 03:26:49,351 INFO L154 LiptonReduction]: Checked pairs total: 2544 [2021-03-26 03:26:49,352 INFO L156 LiptonReduction]: Total number of compositions: 32 [2021-03-26 03:26:49,352 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1344 [2021-03-26 03:26:49,352 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:26:49,352 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:49,353 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:49,353 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:49,353 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:49,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:49,353 INFO L82 PathProgramCache]: Analyzing trace with hash 72739, now seen corresponding path program 1 times [2021-03-26 03:26:49,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:49,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531829655] [2021-03-26 03:26:49,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:49,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:49,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:49,363 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 03:26:49,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531829655] [2021-03-26 03:26:49,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:49,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:49,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667156401] [2021-03-26 03:26:49,364 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:49,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:49,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:49,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:49,364 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 133 [2021-03-26 03:26:49,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 67 transitions, 1286 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 03:26:49,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:49,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 133 [2021-03-26 03:26:49,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:49,372 INFO L129 PetriNetUnfolder]: 0/66 cut-off events. [2021-03-26 03:26:49,372 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:49,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 66 events. 0/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 33/99 useless extension candidates. Maximal degree in co-relation 0. Up to 33 conditions per place. [2021-03-26 03:26:49,373 INFO L132 encePairwiseOnDemand]: 131/133 looper letters, 0 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2021-03-26 03:26:49,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 66 transitions, 1286 flow [2021-03-26 03:26:49,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:49,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:49,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2021-03-26 03:26:49,374 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9824561403508771 [2021-03-26 03:26:49,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2021-03-26 03:26:49,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2021-03-26 03:26:49,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:49,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2021-03-26 03:26:49,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 03:26:49,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 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 03:26:49,375 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 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 03:26:49,375 INFO L185 Difference]: Start difference. First operand has 132 places, 67 transitions, 1286 flow. Second operand 3 states and 392 transitions. [2021-03-26 03:26:49,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 66 transitions, 1286 flow [2021-03-26 03:26:49,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 66 transitions, 294 flow, removed 496 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:49,384 INFO L241 Difference]: Finished difference. Result has 133 places, 66 transitions, 294 flow [2021-03-26 03:26:49,384 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=133, PETRI_TRANSITIONS=66} [2021-03-26 03:26:49,384 INFO L343 CegarLoopForPetriNet]: 132 programPoint places, 1 predicate places. [2021-03-26 03:26:49,384 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:49,385 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 66 transitions, 294 flow [2021-03-26 03:26:49,385 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 66 transitions, 294 flow [2021-03-26 03:26:49,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 133 places, 66 transitions, 294 flow [2021-03-26 03:26:49,389 INFO L129 PetriNetUnfolder]: 0/66 cut-off events. [2021-03-26 03:26:49,389 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:49,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 66 events. 0/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 0. Up to 33 conditions per place. [2021-03-26 03:26:49,390 INFO L142 LiptonReduction]: Number of co-enabled transitions 2048 [2021-03-26 03:26:49,392 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:49,392 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:49,392 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-26 03:26:49,393 INFO L480 AbstractCegarLoop]: Abstraction has has 133 places, 66 transitions, 294 flow [2021-03-26 03:26:49,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 03:26:49,393 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:49,393 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:49,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-03-26 03:26:49,393 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:49,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:49,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1398026328, now seen corresponding path program 1 times [2021-03-26 03:26:49,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:49,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463635738] [2021-03-26 03:26:49,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:49,397 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:49,398 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:49,401 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:49,401 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:49,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-03-26 03:26:49,401 WARN L342 ceAbstractionStarter]: 32 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:49,401 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 33 thread instances. [2021-03-26 03:26:49,424 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:49,424 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:49,424 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:49,424 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:49,424 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:49,424 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:49,424 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:49,424 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:49,424 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:49,424 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:49,425 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 171 places, 104 transitions, 1429 flow [2021-03-26 03:26:49,439 INFO L129 PetriNetUnfolder]: 0/203 cut-off events. [2021-03-26 03:26:49,439 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:49,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 203 events. 0/203 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 653 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 0. Up to 34 conditions per place. [2021-03-26 03:26:49,439 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 104 transitions, 1429 flow [2021-03-26 03:26:49,440 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 102 transitions, 1425 flow [2021-03-26 03:26:49,440 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:49,440 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 102 transitions, 1425 flow [2021-03-26 03:26:49,440 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 102 transitions, 1425 flow [2021-03-26 03:26:49,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 169 places, 102 transitions, 1425 flow [2021-03-26 03:26:49,452 INFO L129 PetriNetUnfolder]: 0/135 cut-off events. [2021-03-26 03:26:49,452 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:49,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 796 conditions, 135 events. 0/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 432 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 0. Up to 34 conditions per place. [2021-03-26 03:26:49,455 INFO L142 LiptonReduction]: Number of co-enabled transitions 6600 [2021-03-26 03:26:50,869 INFO L154 LiptonReduction]: Checked pairs total: 2706 [2021-03-26 03:26:50,869 INFO L156 LiptonReduction]: Total number of compositions: 33 [2021-03-26 03:26:50,869 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1429 [2021-03-26 03:26:50,870 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:26:50,870 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:50,870 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:50,871 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:50,871 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:50,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:50,871 INFO L82 PathProgramCache]: Analyzing trace with hash 77091, now seen corresponding path program 1 times [2021-03-26 03:26:50,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:50,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278319362] [2021-03-26 03:26:50,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:50,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:50,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:50,878 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 03:26:50,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278319362] [2021-03-26 03:26:50,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:50,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:50,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301977591] [2021-03-26 03:26:50,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:50,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:50,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:50,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:50,879 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 137 [2021-03-26 03:26:50,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 69 transitions, 1359 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 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 03:26:50,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:50,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 137 [2021-03-26 03:26:50,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:50,889 INFO L129 PetriNetUnfolder]: 0/68 cut-off events. [2021-03-26 03:26:50,889 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:50,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 731 conditions, 68 events. 0/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 34/102 useless extension candidates. Maximal degree in co-relation 0. Up to 34 conditions per place. [2021-03-26 03:26:50,889 INFO L132 encePairwiseOnDemand]: 135/137 looper letters, 0 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2021-03-26 03:26:50,890 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 68 transitions, 1359 flow [2021-03-26 03:26:50,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:50,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:50,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 404 transitions. [2021-03-26 03:26:50,890 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9829683698296837 [2021-03-26 03:26:50,890 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 404 transitions. [2021-03-26 03:26:50,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 404 transitions. [2021-03-26 03:26:50,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:50,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 404 transitions. [2021-03-26 03:26:50,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 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 03:26:50,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 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 03:26:50,892 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 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 03:26:50,892 INFO L185 Difference]: Start difference. First operand has 136 places, 69 transitions, 1359 flow. Second operand 3 states and 404 transitions. [2021-03-26 03:26:50,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 68 transitions, 1359 flow [2021-03-26 03:26:50,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 68 transitions, 303 flow, removed 528 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:50,903 INFO L241 Difference]: Finished difference. Result has 137 places, 68 transitions, 303 flow [2021-03-26 03:26:50,904 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=303, PETRI_PLACES=137, PETRI_TRANSITIONS=68} [2021-03-26 03:26:50,904 INFO L343 CegarLoopForPetriNet]: 136 programPoint places, 1 predicate places. [2021-03-26 03:26:50,904 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:50,904 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 68 transitions, 303 flow [2021-03-26 03:26:50,904 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 68 transitions, 303 flow [2021-03-26 03:26:50,904 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 137 places, 68 transitions, 303 flow [2021-03-26 03:26:50,910 INFO L129 PetriNetUnfolder]: 0/68 cut-off events. [2021-03-26 03:26:50,910 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:50,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 68 events. 0/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 69 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 0. Up to 34 conditions per place. [2021-03-26 03:26:50,911 INFO L142 LiptonReduction]: Number of co-enabled transitions 2178 [2021-03-26 03:26:50,913 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:50,913 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:50,913 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-03-26 03:26:50,914 INFO L480 AbstractCegarLoop]: Abstraction has has 137 places, 68 transitions, 303 flow [2021-03-26 03:26:50,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 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 03:26:50,914 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:50,914 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:50,914 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-03-26 03:26:50,914 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:50,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:50,914 INFO L82 PathProgramCache]: Analyzing trace with hash -103388295, now seen corresponding path program 1 times [2021-03-26 03:26:50,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:50,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367694782] [2021-03-26 03:26:50,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:50,919 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:50,920 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:50,922 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:50,923 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:50,923 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-03-26 03:26:50,923 WARN L342 ceAbstractionStarter]: 33 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:50,923 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 34 thread instances. [2021-03-26 03:26:50,950 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:50,950 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:50,951 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:50,951 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:50,951 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:50,951 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:50,951 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:50,951 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:50,951 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:50,951 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:50,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 176 places, 107 transitions, 1506 flow [2021-03-26 03:26:50,972 INFO L129 PetriNetUnfolder]: 0/209 cut-off events. [2021-03-26 03:26:50,972 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:50,972 INFO L84 FinitePrefix]: Finished finitePrefix Result has 907 conditions, 209 events. 0/209 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 676 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 0. Up to 35 conditions per place. [2021-03-26 03:26:50,972 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 107 transitions, 1506 flow [2021-03-26 03:26:50,973 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 105 transitions, 1502 flow [2021-03-26 03:26:50,973 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:50,973 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 174 places, 105 transitions, 1502 flow [2021-03-26 03:26:50,974 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 174 places, 105 transitions, 1502 flow [2021-03-26 03:26:50,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 174 places, 105 transitions, 1502 flow [2021-03-26 03:26:50,987 INFO L129 PetriNetUnfolder]: 0/139 cut-off events. [2021-03-26 03:26:50,987 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:50,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 837 conditions, 139 events. 0/139 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 359 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 0. Up to 35 conditions per place. [2021-03-26 03:26:50,992 INFO L142 LiptonReduction]: Number of co-enabled transitions 7004 [2021-03-26 03:26:52,445 INFO L154 LiptonReduction]: Checked pairs total: 2873 [2021-03-26 03:26:52,445 INFO L156 LiptonReduction]: Total number of compositions: 34 [2021-03-26 03:26:52,445 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1472 [2021-03-26 03:26:52,446 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:26:52,446 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:52,446 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:52,446 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:52,446 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:52,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:52,446 INFO L82 PathProgramCache]: Analyzing trace with hash 81571, now seen corresponding path program 1 times [2021-03-26 03:26:52,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:52,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263292254] [2021-03-26 03:26:52,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:52,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:52,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:52,497 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 03:26:52,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263292254] [2021-03-26 03:26:52,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:52,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:52,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297060925] [2021-03-26 03:26:52,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:52,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:52,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:52,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:52,498 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 141 [2021-03-26 03:26:52,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 71 transitions, 1434 flow. Second operand has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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 03:26:52,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:52,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 141 [2021-03-26 03:26:52,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:52,507 INFO L129 PetriNetUnfolder]: 0/70 cut-off events. [2021-03-26 03:26:52,507 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:52,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 70 events. 0/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 76 event pairs, 0 based on Foata normal form. 35/105 useless extension candidates. Maximal degree in co-relation 0. Up to 35 conditions per place. [2021-03-26 03:26:52,507 INFO L132 encePairwiseOnDemand]: 139/141 looper letters, 0 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2021-03-26 03:26:52,507 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 70 transitions, 1434 flow [2021-03-26 03:26:52,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:52,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:52,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 416 transitions. [2021-03-26 03:26:52,508 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.983451536643026 [2021-03-26 03:26:52,508 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 416 transitions. [2021-03-26 03:26:52,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 416 transitions. [2021-03-26 03:26:52,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:52,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 416 transitions. [2021-03-26 03:26:52,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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 03:26:52,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 03:26:52,509 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 03:26:52,509 INFO L185 Difference]: Start difference. First operand has 140 places, 71 transitions, 1434 flow. Second operand 3 states and 416 transitions. [2021-03-26 03:26:52,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 70 transitions, 1434 flow [2021-03-26 03:26:52,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 70 transitions, 312 flow, removed 561 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:52,519 INFO L241 Difference]: Finished difference. Result has 141 places, 70 transitions, 312 flow [2021-03-26 03:26:52,519 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=141, PETRI_TRANSITIONS=70} [2021-03-26 03:26:52,519 INFO L343 CegarLoopForPetriNet]: 140 programPoint places, 1 predicate places. [2021-03-26 03:26:52,519 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:52,519 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 70 transitions, 312 flow [2021-03-26 03:26:52,519 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 70 transitions, 312 flow [2021-03-26 03:26:52,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 141 places, 70 transitions, 312 flow [2021-03-26 03:26:52,524 INFO L129 PetriNetUnfolder]: 0/70 cut-off events. [2021-03-26 03:26:52,524 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:52,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 70 events. 0/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 0. Up to 35 conditions per place. [2021-03-26 03:26:52,525 INFO L142 LiptonReduction]: Number of co-enabled transitions 2312 [2021-03-26 03:26:52,527 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:52,527 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:52,527 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-26 03:26:52,528 INFO L480 AbstractCegarLoop]: Abstraction has has 141 places, 70 transitions, 312 flow [2021-03-26 03:26:52,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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 03:26:52,528 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:52,528 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:52,528 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-03-26 03:26:52,528 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:52,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:52,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1249775589, now seen corresponding path program 1 times [2021-03-26 03:26:52,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:52,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818012450] [2021-03-26 03:26:52,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:52,533 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:52,534 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:52,537 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:52,537 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:52,537 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-03-26 03:26:52,537 WARN L342 ceAbstractionStarter]: 34 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:52,537 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 35 thread instances. [2021-03-26 03:26:52,563 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:52,563 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:52,563 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:52,563 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:52,563 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:52,563 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:52,563 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:52,563 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:52,563 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:52,563 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:52,564 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 181 places, 110 transitions, 1585 flow [2021-03-26 03:26:52,579 INFO L129 PetriNetUnfolder]: 0/215 cut-off events. [2021-03-26 03:26:52,580 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:52,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 215 events. 0/215 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 710 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 0. Up to 36 conditions per place. [2021-03-26 03:26:52,580 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 110 transitions, 1585 flow [2021-03-26 03:26:52,581 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 108 transitions, 1581 flow [2021-03-26 03:26:52,581 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:52,581 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 108 transitions, 1581 flow [2021-03-26 03:26:52,581 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 108 transitions, 1581 flow [2021-03-26 03:26:52,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 179 places, 108 transitions, 1581 flow [2021-03-26 03:26:52,594 INFO L129 PetriNetUnfolder]: 0/143 cut-off events. [2021-03-26 03:26:52,594 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:52,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 879 conditions, 143 events. 0/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 379 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 0. Up to 36 conditions per place. [2021-03-26 03:26:52,598 INFO L142 LiptonReduction]: Number of co-enabled transitions 7420 [2021-03-26 03:26:54,102 INFO L154 LiptonReduction]: Checked pairs total: 3045 [2021-03-26 03:26:54,102 INFO L156 LiptonReduction]: Total number of compositions: 35 [2021-03-26 03:26:54,102 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1521 [2021-03-26 03:26:54,103 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:26:54,103 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:54,103 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:54,103 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:54,103 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:54,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:54,103 INFO L82 PathProgramCache]: Analyzing trace with hash 86179, now seen corresponding path program 1 times [2021-03-26 03:26:54,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:54,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315595778] [2021-03-26 03:26:54,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:54,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:54,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:54,111 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 03:26:54,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315595778] [2021-03-26 03:26:54,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:54,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:54,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637172211] [2021-03-26 03:26:54,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:54,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:54,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:54,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:54,112 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 145 [2021-03-26 03:26:54,112 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 73 transitions, 1511 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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 03:26:54,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:54,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 145 [2021-03-26 03:26:54,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:54,122 INFO L129 PetriNetUnfolder]: 0/72 cut-off events. [2021-03-26 03:26:54,122 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:54,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 810 conditions, 72 events. 0/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 36/108 useless extension candidates. Maximal degree in co-relation 0. Up to 36 conditions per place. [2021-03-26 03:26:54,122 INFO L132 encePairwiseOnDemand]: 143/145 looper letters, 0 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2021-03-26 03:26:54,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 72 transitions, 1511 flow [2021-03-26 03:26:54,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:54,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:54,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2021-03-26 03:26:54,123 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9839080459770115 [2021-03-26 03:26:54,123 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2021-03-26 03:26:54,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2021-03-26 03:26:54,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:54,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2021-03-26 03:26:54,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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 03:26:54,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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 03:26:54,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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 03:26:54,124 INFO L185 Difference]: Start difference. First operand has 144 places, 73 transitions, 1511 flow. Second operand 3 states and 428 transitions. [2021-03-26 03:26:54,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 72 transitions, 1511 flow [2021-03-26 03:26:54,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 72 transitions, 321 flow, removed 595 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:54,133 INFO L241 Difference]: Finished difference. Result has 145 places, 72 transitions, 321 flow [2021-03-26 03:26:54,133 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=321, PETRI_PLACES=145, PETRI_TRANSITIONS=72} [2021-03-26 03:26:54,133 INFO L343 CegarLoopForPetriNet]: 144 programPoint places, 1 predicate places. [2021-03-26 03:26:54,133 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:54,133 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 72 transitions, 321 flow [2021-03-26 03:26:54,133 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 72 transitions, 321 flow [2021-03-26 03:26:54,134 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 145 places, 72 transitions, 321 flow [2021-03-26 03:26:54,139 INFO L129 PetriNetUnfolder]: 0/72 cut-off events. [2021-03-26 03:26:54,139 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:54,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 72 events. 0/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 0. Up to 36 conditions per place. [2021-03-26 03:26:54,140 INFO L142 LiptonReduction]: Number of co-enabled transitions 2450 [2021-03-26 03:26:54,142 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:54,142 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:54,142 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-03-26 03:26:54,143 INFO L480 AbstractCegarLoop]: Abstraction has has 145 places, 72 transitions, 321 flow [2021-03-26 03:26:54,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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 03:26:54,143 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:54,143 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:54,143 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-03-26 03:26:54,143 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:54,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:54,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1758155444, now seen corresponding path program 1 times [2021-03-26 03:26:54,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:54,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668560680] [2021-03-26 03:26:54,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:54,148 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:54,149 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:54,152 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:54,152 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:54,152 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-03-26 03:26:54,152 WARN L342 ceAbstractionStarter]: 35 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:54,152 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 36 thread instances. [2021-03-26 03:26:54,177 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:54,177 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:54,178 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:54,178 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:54,178 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:54,178 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:54,178 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:54,178 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:54,178 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:54,178 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:54,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 186 places, 113 transitions, 1666 flow [2021-03-26 03:26:54,228 INFO L129 PetriNetUnfolder]: 0/221 cut-off events. [2021-03-26 03:26:54,228 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:54,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 996 conditions, 221 events. 0/221 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 732 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 0. Up to 37 conditions per place. [2021-03-26 03:26:54,228 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 113 transitions, 1666 flow [2021-03-26 03:26:54,229 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 111 transitions, 1662 flow [2021-03-26 03:26:54,230 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:54,230 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 111 transitions, 1662 flow [2021-03-26 03:26:54,230 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 111 transitions, 1662 flow [2021-03-26 03:26:54,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 184 places, 111 transitions, 1662 flow [2021-03-26 03:26:54,243 INFO L129 PetriNetUnfolder]: 0/147 cut-off events. [2021-03-26 03:26:54,243 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:54,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 147 events. 0/147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 445 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 0. Up to 37 conditions per place. [2021-03-26 03:26:54,247 INFO L142 LiptonReduction]: Number of co-enabled transitions 7848 [2021-03-26 03:26:55,869 INFO L154 LiptonReduction]: Checked pairs total: 3222 [2021-03-26 03:26:55,869 INFO L156 LiptonReduction]: Total number of compositions: 36 [2021-03-26 03:26:55,870 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1641 [2021-03-26 03:26:55,870 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:26:55,871 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:55,871 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:55,871 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:55,871 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:55,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:55,871 INFO L82 PathProgramCache]: Analyzing trace with hash 90915, now seen corresponding path program 1 times [2021-03-26 03:26:55,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:55,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873605779] [2021-03-26 03:26:55,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:55,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:55,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:55,882 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 03:26:55,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873605779] [2021-03-26 03:26:55,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:55,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:55,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229728618] [2021-03-26 03:26:55,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:55,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:55,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:55,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:55,886 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 149 [2021-03-26 03:26:55,886 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 75 transitions, 1590 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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 03:26:55,886 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:55,886 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 149 [2021-03-26 03:26:55,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:55,897 INFO L129 PetriNetUnfolder]: 0/74 cut-off events. [2021-03-26 03:26:55,897 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:55,897 INFO L84 FinitePrefix]: Finished finitePrefix Result has 851 conditions, 74 events. 0/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 82 event pairs, 0 based on Foata normal form. 37/111 useless extension candidates. Maximal degree in co-relation 0. Up to 37 conditions per place. [2021-03-26 03:26:55,897 INFO L132 encePairwiseOnDemand]: 147/149 looper letters, 0 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2021-03-26 03:26:55,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 74 transitions, 1590 flow [2021-03-26 03:26:55,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:55,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:55,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2021-03-26 03:26:55,898 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9843400447427293 [2021-03-26 03:26:55,898 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2021-03-26 03:26:55,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2021-03-26 03:26:55,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:55,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2021-03-26 03:26:55,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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 03:26:55,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 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 03:26:55,899 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 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 03:26:55,899 INFO L185 Difference]: Start difference. First operand has 148 places, 75 transitions, 1590 flow. Second operand 3 states and 440 transitions. [2021-03-26 03:26:55,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 74 transitions, 1590 flow [2021-03-26 03:26:55,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 74 transitions, 330 flow, removed 630 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:55,909 INFO L241 Difference]: Finished difference. Result has 149 places, 74 transitions, 330 flow [2021-03-26 03:26:55,909 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=330, PETRI_PLACES=149, PETRI_TRANSITIONS=74} [2021-03-26 03:26:55,909 INFO L343 CegarLoopForPetriNet]: 148 programPoint places, 1 predicate places. [2021-03-26 03:26:55,909 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:55,909 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 74 transitions, 330 flow [2021-03-26 03:26:55,910 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 74 transitions, 330 flow [2021-03-26 03:26:55,910 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 74 transitions, 330 flow [2021-03-26 03:26:55,915 INFO L129 PetriNetUnfolder]: 0/74 cut-off events. [2021-03-26 03:26:55,916 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:55,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 74 events. 0/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 76 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 0. Up to 37 conditions per place. [2021-03-26 03:26:55,917 INFO L142 LiptonReduction]: Number of co-enabled transitions 2592 [2021-03-26 03:26:55,919 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:55,919 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:55,919 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-03-26 03:26:55,920 INFO L480 AbstractCegarLoop]: Abstraction has has 149 places, 74 transitions, 330 flow [2021-03-26 03:26:55,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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 03:26:55,920 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:55,920 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:55,920 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-03-26 03:26:55,920 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:55,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:55,920 INFO L82 PathProgramCache]: Analyzing trace with hash -620843554, now seen corresponding path program 1 times [2021-03-26 03:26:55,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:55,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749049072] [2021-03-26 03:26:55,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:55,926 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:55,927 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:55,931 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:55,931 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:55,931 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-03-26 03:26:55,931 WARN L342 ceAbstractionStarter]: 36 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:55,931 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 37 thread instances. [2021-03-26 03:26:55,958 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:55,959 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:55,959 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:55,959 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:55,959 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:55,959 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:55,959 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:55,959 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:55,959 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:55,959 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:55,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 191 places, 116 transitions, 1749 flow [2021-03-26 03:26:56,033 INFO L129 PetriNetUnfolder]: 0/227 cut-off events. [2021-03-26 03:26:56,033 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:56,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1042 conditions, 227 events. 0/227 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 705 event pairs, 0 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 0. Up to 38 conditions per place. [2021-03-26 03:26:56,033 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 116 transitions, 1749 flow [2021-03-26 03:26:56,034 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 189 places, 114 transitions, 1745 flow [2021-03-26 03:26:56,034 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:56,035 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 189 places, 114 transitions, 1745 flow [2021-03-26 03:26:56,035 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 189 places, 114 transitions, 1745 flow [2021-03-26 03:26:56,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 189 places, 114 transitions, 1745 flow [2021-03-26 03:26:56,050 INFO L129 PetriNetUnfolder]: 0/151 cut-off events. [2021-03-26 03:26:56,051 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:56,051 INFO L84 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 151 events. 0/151 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 480 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 0. Up to 38 conditions per place. [2021-03-26 03:26:56,056 INFO L142 LiptonReduction]: Number of co-enabled transitions 8288 [2021-03-26 03:26:57,762 INFO L154 LiptonReduction]: Checked pairs total: 3404 [2021-03-26 03:26:57,762 INFO L156 LiptonReduction]: Total number of compositions: 37 [2021-03-26 03:26:57,762 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1728 [2021-03-26 03:26:57,763 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:26:57,763 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:57,763 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:57,763 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:57,763 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:57,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:57,763 INFO L82 PathProgramCache]: Analyzing trace with hash 95779, now seen corresponding path program 1 times [2021-03-26 03:26:57,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:57,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095731499] [2021-03-26 03:26:57,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:57,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:57,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:57,771 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 03:26:57,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095731499] [2021-03-26 03:26:57,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:57,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:57,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693921466] [2021-03-26 03:26:57,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:57,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:57,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:57,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:57,772 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 153 [2021-03-26 03:26:57,773 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 77 transitions, 1671 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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 03:26:57,773 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:57,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 153 [2021-03-26 03:26:57,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:57,784 INFO L129 PetriNetUnfolder]: 0/76 cut-off events. [2021-03-26 03:26:57,784 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:57,784 INFO L84 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 76 events. 0/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 38/114 useless extension candidates. Maximal degree in co-relation 0. Up to 38 conditions per place. [2021-03-26 03:26:57,784 INFO L132 encePairwiseOnDemand]: 151/153 looper letters, 0 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2021-03-26 03:26:57,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 76 transitions, 1671 flow [2021-03-26 03:26:57,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:57,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:57,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2021-03-26 03:26:57,785 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9847494553376906 [2021-03-26 03:26:57,785 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2021-03-26 03:26:57,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2021-03-26 03:26:57,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:57,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2021-03-26 03:26:57,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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 03:26:57,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 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 03:26:57,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 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 03:26:57,786 INFO L185 Difference]: Start difference. First operand has 152 places, 77 transitions, 1671 flow. Second operand 3 states and 452 transitions. [2021-03-26 03:26:57,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 76 transitions, 1671 flow [2021-03-26 03:26:57,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 76 transitions, 339 flow, removed 666 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:57,796 INFO L241 Difference]: Finished difference. Result has 153 places, 76 transitions, 339 flow [2021-03-26 03:26:57,796 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=339, PETRI_PLACES=153, PETRI_TRANSITIONS=76} [2021-03-26 03:26:57,796 INFO L343 CegarLoopForPetriNet]: 152 programPoint places, 1 predicate places. [2021-03-26 03:26:57,796 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:57,796 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 76 transitions, 339 flow [2021-03-26 03:26:57,796 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 76 transitions, 339 flow [2021-03-26 03:26:57,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 153 places, 76 transitions, 339 flow [2021-03-26 03:26:57,854 INFO L129 PetriNetUnfolder]: 0/76 cut-off events. [2021-03-26 03:26:57,854 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:57,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 76 events. 0/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 77 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 0. Up to 38 conditions per place. [2021-03-26 03:26:57,855 INFO L142 LiptonReduction]: Number of co-enabled transitions 2738 [2021-03-26 03:26:57,860 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:57,860 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:57,860 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 64 [2021-03-26 03:26:57,861 INFO L480 AbstractCegarLoop]: Abstraction has has 153 places, 76 transitions, 339 flow [2021-03-26 03:26:57,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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 03:26:57,861 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:57,861 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:57,861 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-03-26 03:26:57,861 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:57,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:57,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1594398209, now seen corresponding path program 1 times [2021-03-26 03:26:57,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:57,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433080015] [2021-03-26 03:26:57,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:57,868 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:57,870 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:57,873 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:57,873 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:57,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-03-26 03:26:57,873 WARN L342 ceAbstractionStarter]: 37 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:57,873 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 38 thread instances. [2021-03-26 03:26:57,905 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:57,906 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:57,906 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:57,906 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:57,906 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:57,906 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:57,906 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:57,906 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:57,906 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:57,906 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:57,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 196 places, 119 transitions, 1834 flow [2021-03-26 03:26:57,928 INFO L129 PetriNetUnfolder]: 0/233 cut-off events. [2021-03-26 03:26:57,929 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:57,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1089 conditions, 233 events. 0/233 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 762 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 0. Up to 39 conditions per place. [2021-03-26 03:26:57,929 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 119 transitions, 1834 flow [2021-03-26 03:26:57,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 117 transitions, 1830 flow [2021-03-26 03:26:57,930 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:57,930 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 117 transitions, 1830 flow [2021-03-26 03:26:57,930 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 117 transitions, 1830 flow [2021-03-26 03:26:57,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 194 places, 117 transitions, 1830 flow [2021-03-26 03:26:57,947 INFO L129 PetriNetUnfolder]: 0/155 cut-off events. [2021-03-26 03:26:57,947 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:57,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 155 events. 0/155 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 431 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 0. Up to 39 conditions per place. [2021-03-26 03:26:57,953 INFO L142 LiptonReduction]: Number of co-enabled transitions 8740 [2021-03-26 03:26:59,826 INFO L154 LiptonReduction]: Checked pairs total: 3591 [2021-03-26 03:26:59,827 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-26 03:26:59,827 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1897 [2021-03-26 03:26:59,828 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:26:59,828 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:59,828 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:59,828 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:26:59,828 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:59,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:59,828 INFO L82 PathProgramCache]: Analyzing trace with hash 100771, now seen corresponding path program 1 times [2021-03-26 03:26:59,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:59,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464028565] [2021-03-26 03:26:59,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:26:59,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:26:59,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:26:59,836 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 03:26:59,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464028565] [2021-03-26 03:26:59,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:26:59,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:26:59,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690833852] [2021-03-26 03:26:59,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:26:59,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:26:59,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:26:59,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:26:59,837 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 157 [2021-03-26 03:26:59,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 79 transitions, 1754 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 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 03:26:59,837 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:26:59,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 157 [2021-03-26 03:26:59,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:26:59,848 INFO L129 PetriNetUnfolder]: 0/78 cut-off events. [2021-03-26 03:26:59,848 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:59,848 INFO L84 FinitePrefix]: Finished finitePrefix Result has 936 conditions, 78 events. 0/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 76 event pairs, 0 based on Foata normal form. 39/117 useless extension candidates. Maximal degree in co-relation 0. Up to 39 conditions per place. [2021-03-26 03:26:59,849 INFO L132 encePairwiseOnDemand]: 155/157 looper letters, 0 selfloop transitions, 1 changer transitions 0/78 dead transitions. [2021-03-26 03:26:59,849 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 78 transitions, 1754 flow [2021-03-26 03:26:59,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:26:59,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:26:59,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 464 transitions. [2021-03-26 03:26:59,849 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9851380042462845 [2021-03-26 03:26:59,849 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 464 transitions. [2021-03-26 03:26:59,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 464 transitions. [2021-03-26 03:26:59,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:26:59,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 464 transitions. [2021-03-26 03:26:59,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 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 03:26:59,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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 03:26:59,850 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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 03:26:59,850 INFO L185 Difference]: Start difference. First operand has 156 places, 79 transitions, 1754 flow. Second operand 3 states and 464 transitions. [2021-03-26 03:26:59,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 78 transitions, 1754 flow [2021-03-26 03:26:59,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 78 transitions, 348 flow, removed 703 selfloop flow, removed 0 redundant places. [2021-03-26 03:26:59,861 INFO L241 Difference]: Finished difference. Result has 157 places, 78 transitions, 348 flow [2021-03-26 03:26:59,861 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=348, PETRI_PLACES=157, PETRI_TRANSITIONS=78} [2021-03-26 03:26:59,861 INFO L343 CegarLoopForPetriNet]: 156 programPoint places, 1 predicate places. [2021-03-26 03:26:59,862 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:59,862 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 78 transitions, 348 flow [2021-03-26 03:26:59,862 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 78 transitions, 348 flow [2021-03-26 03:26:59,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 157 places, 78 transitions, 348 flow [2021-03-26 03:26:59,868 INFO L129 PetriNetUnfolder]: 0/78 cut-off events. [2021-03-26 03:26:59,868 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:59,868 INFO L84 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 78 events. 0/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 76 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 0. Up to 39 conditions per place. [2021-03-26 03:26:59,869 INFO L142 LiptonReduction]: Number of co-enabled transitions 2888 [2021-03-26 03:26:59,871 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:26:59,871 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:26:59,871 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-03-26 03:26:59,872 INFO L480 AbstractCegarLoop]: Abstraction has has 157 places, 78 transitions, 348 flow [2021-03-26 03:26:59,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 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 03:26:59,872 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:26:59,872 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:26:59,872 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-03-26 03:26:59,872 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:26:59,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:26:59,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1021538209, now seen corresponding path program 1 times [2021-03-26 03:26:59,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:26:59,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055347398] [2021-03-26 03:26:59,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:26:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:59,878 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:26:59,879 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:26:59,883 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:26:59,883 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:26:59,883 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-03-26 03:26:59,883 WARN L342 ceAbstractionStarter]: 38 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:26:59,883 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 39 thread instances. [2021-03-26 03:26:59,910 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:26:59,910 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:26:59,910 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:26:59,910 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:26:59,910 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:26:59,910 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:26:59,910 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:26:59,910 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:26:59,911 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:26:59,911 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:26:59,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 201 places, 122 transitions, 1921 flow [2021-03-26 03:26:59,930 INFO L129 PetriNetUnfolder]: 0/239 cut-off events. [2021-03-26 03:26:59,930 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:59,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1137 conditions, 239 events. 0/239 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 781 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 0. Up to 40 conditions per place. [2021-03-26 03:26:59,931 INFO L82 GeneralOperation]: Start removeDead. Operand has 201 places, 122 transitions, 1921 flow [2021-03-26 03:26:59,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 120 transitions, 1917 flow [2021-03-26 03:26:59,932 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:26:59,932 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 120 transitions, 1917 flow [2021-03-26 03:26:59,932 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 120 transitions, 1917 flow [2021-03-26 03:26:59,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 199 places, 120 transitions, 1917 flow [2021-03-26 03:26:59,947 INFO L129 PetriNetUnfolder]: 0/159 cut-off events. [2021-03-26 03:26:59,947 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:26:59,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1057 conditions, 159 events. 0/159 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 379 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 0. Up to 40 conditions per place. [2021-03-26 03:26:59,952 INFO L142 LiptonReduction]: Number of co-enabled transitions 9204 [2021-03-26 03:27:01,888 INFO L154 LiptonReduction]: Checked pairs total: 3783 [2021-03-26 03:27:01,888 INFO L156 LiptonReduction]: Total number of compositions: 39 [2021-03-26 03:27:01,889 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1957 [2021-03-26 03:27:01,889 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:27:01,889 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:01,889 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:01,889 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:27:01,889 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:01,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:01,890 INFO L82 PathProgramCache]: Analyzing trace with hash 105891, now seen corresponding path program 1 times [2021-03-26 03:27:01,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:01,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192574313] [2021-03-26 03:27:01,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:27:01,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:27:01,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:27:01,898 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 03:27:01,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192574313] [2021-03-26 03:27:01,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:27:01,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:27:01,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559879729] [2021-03-26 03:27:01,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:27:01,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:27:01,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:27:01,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:27:01,899 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 161 [2021-03-26 03:27:01,899 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 81 transitions, 1839 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 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 03:27:01,899 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:27:01,899 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 161 [2021-03-26 03:27:01,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:27:01,910 INFO L129 PetriNetUnfolder]: 0/80 cut-off events. [2021-03-26 03:27:01,911 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:01,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 980 conditions, 80 events. 0/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 77 event pairs, 0 based on Foata normal form. 40/120 useless extension candidates. Maximal degree in co-relation 0. Up to 40 conditions per place. [2021-03-26 03:27:01,911 INFO L132 encePairwiseOnDemand]: 159/161 looper letters, 0 selfloop transitions, 1 changer transitions 0/80 dead transitions. [2021-03-26 03:27:01,911 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 80 transitions, 1839 flow [2021-03-26 03:27:01,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:27:01,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:27:01,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 476 transitions. [2021-03-26 03:27:01,911 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9855072463768116 [2021-03-26 03:27:01,912 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 476 transitions. [2021-03-26 03:27:01,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 476 transitions. [2021-03-26 03:27:01,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:27:01,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 476 transitions. [2021-03-26 03:27:01,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 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 03:27:01,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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 03:27:01,913 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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 03:27:01,913 INFO L185 Difference]: Start difference. First operand has 160 places, 81 transitions, 1839 flow. Second operand 3 states and 476 transitions. [2021-03-26 03:27:01,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 80 transitions, 1839 flow [2021-03-26 03:27:01,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 80 transitions, 357 flow, removed 741 selfloop flow, removed 0 redundant places. [2021-03-26 03:27:01,924 INFO L241 Difference]: Finished difference. Result has 161 places, 80 transitions, 357 flow [2021-03-26 03:27:01,924 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=357, PETRI_PLACES=161, PETRI_TRANSITIONS=80} [2021-03-26 03:27:01,924 INFO L343 CegarLoopForPetriNet]: 160 programPoint places, 1 predicate places. [2021-03-26 03:27:01,924 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:01,924 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 80 transitions, 357 flow [2021-03-26 03:27:01,925 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 80 transitions, 357 flow [2021-03-26 03:27:01,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 161 places, 80 transitions, 357 flow [2021-03-26 03:27:01,931 INFO L129 PetriNetUnfolder]: 0/80 cut-off events. [2021-03-26 03:27:01,931 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:01,931 INFO L84 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 80 events. 0/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 0. Up to 40 conditions per place. [2021-03-26 03:27:01,932 INFO L142 LiptonReduction]: Number of co-enabled transitions 3042 [2021-03-26 03:27:01,934 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:27:01,934 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:27:01,934 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-03-26 03:27:01,935 INFO L480 AbstractCegarLoop]: Abstraction has has 161 places, 80 transitions, 357 flow [2021-03-26 03:27:01,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 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 03:27:01,936 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:01,936 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:27:01,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-03-26 03:27:01,936 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:01,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:01,937 INFO L82 PathProgramCache]: Analyzing trace with hash 131279706, now seen corresponding path program 1 times [2021-03-26 03:27:01,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:01,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375778568] [2021-03-26 03:27:01,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:01,949 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:01,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:01,951 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:01,955 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:27:01,955 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:27:01,955 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-03-26 03:27:01,956 WARN L342 ceAbstractionStarter]: 39 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:27:01,956 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 40 thread instances. [2021-03-26 03:27:01,983 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:27:01,983 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:27:01,984 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:27:01,984 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:27:01,984 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:27:01,984 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:27:01,984 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:27:01,984 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:27:01,984 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:27:01,984 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:27:01,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 206 places, 125 transitions, 2010 flow [2021-03-26 03:27:02,005 INFO L129 PetriNetUnfolder]: 0/245 cut-off events. [2021-03-26 03:27:02,005 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:02,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1186 conditions, 245 events. 0/245 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 816 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 0. Up to 41 conditions per place. [2021-03-26 03:27:02,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 125 transitions, 2010 flow [2021-03-26 03:27:02,006 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 123 transitions, 2006 flow [2021-03-26 03:27:02,006 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:02,006 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 204 places, 123 transitions, 2006 flow [2021-03-26 03:27:02,007 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 204 places, 123 transitions, 2006 flow [2021-03-26 03:27:02,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 204 places, 123 transitions, 2006 flow [2021-03-26 03:27:02,023 INFO L129 PetriNetUnfolder]: 0/163 cut-off events. [2021-03-26 03:27:02,023 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:02,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1104 conditions, 163 events. 0/163 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 456 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 0. Up to 41 conditions per place. [2021-03-26 03:27:02,028 INFO L142 LiptonReduction]: Number of co-enabled transitions 9680 [2021-03-26 03:27:04,134 INFO L154 LiptonReduction]: Checked pairs total: 3980 [2021-03-26 03:27:04,134 INFO L156 LiptonReduction]: Total number of compositions: 40 [2021-03-26 03:27:04,135 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2129 [2021-03-26 03:27:04,135 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:27:04,135 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:04,135 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:04,136 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:27:04,136 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:04,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:04,136 INFO L82 PathProgramCache]: Analyzing trace with hash 111139, now seen corresponding path program 1 times [2021-03-26 03:27:04,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:04,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901154891] [2021-03-26 03:27:04,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:27:04,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:27:04,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:27:04,144 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 03:27:04,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901154891] [2021-03-26 03:27:04,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:27:04,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:27:04,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151075944] [2021-03-26 03:27:04,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:27:04,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:27:04,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:27:04,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:27:04,145 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 165 [2021-03-26 03:27:04,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 83 transitions, 1926 flow. Second operand has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 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 03:27:04,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:27:04,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 165 [2021-03-26 03:27:04,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:27:04,157 INFO L129 PetriNetUnfolder]: 0/82 cut-off events. [2021-03-26 03:27:04,158 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:04,158 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1025 conditions, 82 events. 0/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 41/123 useless extension candidates. Maximal degree in co-relation 0. Up to 41 conditions per place. [2021-03-26 03:27:04,158 INFO L132 encePairwiseOnDemand]: 163/165 looper letters, 0 selfloop transitions, 1 changer transitions 0/82 dead transitions. [2021-03-26 03:27:04,158 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 82 transitions, 1926 flow [2021-03-26 03:27:04,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:27:04,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:27:04,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2021-03-26 03:27:04,158 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9858585858585859 [2021-03-26 03:27:04,158 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2021-03-26 03:27:04,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2021-03-26 03:27:04,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:27:04,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2021-03-26 03:27:04,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 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 03:27:04,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 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 03:27:04,160 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 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 03:27:04,160 INFO L185 Difference]: Start difference. First operand has 164 places, 83 transitions, 1926 flow. Second operand 3 states and 488 transitions. [2021-03-26 03:27:04,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 82 transitions, 1926 flow [2021-03-26 03:27:04,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 82 transitions, 366 flow, removed 780 selfloop flow, removed 0 redundant places. [2021-03-26 03:27:04,174 INFO L241 Difference]: Finished difference. Result has 165 places, 82 transitions, 366 flow [2021-03-26 03:27:04,174 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=366, PETRI_PLACES=165, PETRI_TRANSITIONS=82} [2021-03-26 03:27:04,174 INFO L343 CegarLoopForPetriNet]: 164 programPoint places, 1 predicate places. [2021-03-26 03:27:04,174 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:04,175 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 82 transitions, 366 flow [2021-03-26 03:27:04,175 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 82 transitions, 366 flow [2021-03-26 03:27:04,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 165 places, 82 transitions, 366 flow [2021-03-26 03:27:04,181 INFO L129 PetriNetUnfolder]: 0/82 cut-off events. [2021-03-26 03:27:04,181 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:04,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 82 events. 0/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 86 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 0. Up to 41 conditions per place. [2021-03-26 03:27:04,183 INFO L142 LiptonReduction]: Number of co-enabled transitions 3200 [2021-03-26 03:27:04,185 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:27:04,185 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:27:04,185 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-26 03:27:04,186 INFO L480 AbstractCegarLoop]: Abstraction has has 165 places, 82 transitions, 366 flow [2021-03-26 03:27:04,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 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 03:27:04,186 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:04,186 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:27:04,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-03-26 03:27:04,186 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:04,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:04,187 INFO L82 PathProgramCache]: Analyzing trace with hash -92914844, now seen corresponding path program 1 times [2021-03-26 03:27:04,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:04,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388720173] [2021-03-26 03:27:04,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:04,192 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:04,194 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:04,197 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:27:04,197 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:27:04,198 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-03-26 03:27:04,198 WARN L342 ceAbstractionStarter]: 40 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:27:04,198 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 41 thread instances. [2021-03-26 03:27:04,226 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:27:04,227 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:27:04,227 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:27:04,227 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:27:04,227 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:27:04,227 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:27:04,227 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:27:04,227 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:27:04,227 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:27:04,227 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:27:04,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 211 places, 128 transitions, 2101 flow [2021-03-26 03:27:04,249 INFO L129 PetriNetUnfolder]: 0/251 cut-off events. [2021-03-26 03:27:04,249 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:04,249 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 251 events. 0/251 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 802 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 0. Up to 42 conditions per place. [2021-03-26 03:27:04,249 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 128 transitions, 2101 flow [2021-03-26 03:27:04,250 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 126 transitions, 2097 flow [2021-03-26 03:27:04,250 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:04,251 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 126 transitions, 2097 flow [2021-03-26 03:27:04,251 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 126 transitions, 2097 flow [2021-03-26 03:27:04,251 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 209 places, 126 transitions, 2097 flow [2021-03-26 03:27:04,268 INFO L129 PetriNetUnfolder]: 0/167 cut-off events. [2021-03-26 03:27:04,268 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:04,268 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1152 conditions, 167 events. 0/167 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 495 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 0. Up to 42 conditions per place. [2021-03-26 03:27:04,274 INFO L142 LiptonReduction]: Number of co-enabled transitions 10168 [2021-03-26 03:27:06,457 INFO L154 LiptonReduction]: Checked pairs total: 4182 [2021-03-26 03:27:06,457 INFO L156 LiptonReduction]: Total number of compositions: 41 [2021-03-26 03:27:06,457 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2207 [2021-03-26 03:27:06,458 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:27:06,458 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:06,458 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:06,458 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:27:06,458 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:06,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:06,458 INFO L82 PathProgramCache]: Analyzing trace with hash 116515, now seen corresponding path program 1 times [2021-03-26 03:27:06,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:06,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594307634] [2021-03-26 03:27:06,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:27:06,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:27:06,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:27:06,467 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 03:27:06,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594307634] [2021-03-26 03:27:06,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:27:06,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:27:06,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111551303] [2021-03-26 03:27:06,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:27:06,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:27:06,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:27:06,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:27:06,468 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 169 [2021-03-26 03:27:06,468 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 85 transitions, 2015 flow. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 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 03:27:06,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:27:06,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 169 [2021-03-26 03:27:06,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:27:06,480 INFO L129 PetriNetUnfolder]: 0/84 cut-off events. [2021-03-26 03:27:06,480 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:06,480 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 84 events. 0/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 79 event pairs, 0 based on Foata normal form. 42/126 useless extension candidates. Maximal degree in co-relation 0. Up to 42 conditions per place. [2021-03-26 03:27:06,480 INFO L132 encePairwiseOnDemand]: 167/169 looper letters, 0 selfloop transitions, 1 changer transitions 0/84 dead transitions. [2021-03-26 03:27:06,480 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 84 transitions, 2015 flow [2021-03-26 03:27:06,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:27:06,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:27:06,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2021-03-26 03:27:06,481 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9861932938856016 [2021-03-26 03:27:06,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2021-03-26 03:27:06,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2021-03-26 03:27:06,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:27:06,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2021-03-26 03:27:06,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 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 03:27:06,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 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 03:27:06,482 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 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 03:27:06,482 INFO L185 Difference]: Start difference. First operand has 168 places, 85 transitions, 2015 flow. Second operand 3 states and 500 transitions. [2021-03-26 03:27:06,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 84 transitions, 2015 flow [2021-03-26 03:27:06,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 84 transitions, 375 flow, removed 820 selfloop flow, removed 0 redundant places. [2021-03-26 03:27:06,500 INFO L241 Difference]: Finished difference. Result has 169 places, 84 transitions, 375 flow [2021-03-26 03:27:06,500 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=375, PETRI_PLACES=169, PETRI_TRANSITIONS=84} [2021-03-26 03:27:06,500 INFO L343 CegarLoopForPetriNet]: 168 programPoint places, 1 predicate places. [2021-03-26 03:27:06,500 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:06,500 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 84 transitions, 375 flow [2021-03-26 03:27:06,500 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 84 transitions, 375 flow [2021-03-26 03:27:06,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 169 places, 84 transitions, 375 flow [2021-03-26 03:27:06,507 INFO L129 PetriNetUnfolder]: 0/84 cut-off events. [2021-03-26 03:27:06,507 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:06,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 84 events. 0/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 0. Up to 42 conditions per place. [2021-03-26 03:27:06,508 INFO L142 LiptonReduction]: Number of co-enabled transitions 3362 [2021-03-26 03:27:06,511 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:27:06,511 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:27:06,511 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-26 03:27:06,512 INFO L480 AbstractCegarLoop]: Abstraction has has 169 places, 84 transitions, 375 flow [2021-03-26 03:27:06,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 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 03:27:06,512 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:06,512 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:27:06,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-03-26 03:27:06,512 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:06,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:06,512 INFO L82 PathProgramCache]: Analyzing trace with hash -2062937915, now seen corresponding path program 1 times [2021-03-26 03:27:06,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:06,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359663193] [2021-03-26 03:27:06,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:06,518 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:06,519 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:06,523 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:27:06,523 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:27:06,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-03-26 03:27:06,523 WARN L342 ceAbstractionStarter]: 41 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:27:06,523 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 42 thread instances. [2021-03-26 03:27:06,563 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:27:06,563 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:27:06,563 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:27:06,563 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:27:06,563 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:27:06,563 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:27:06,563 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:27:06,563 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:27:06,563 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:27:06,563 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:27:06,564 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 216 places, 131 transitions, 2194 flow [2021-03-26 03:27:06,586 INFO L129 PetriNetUnfolder]: 0/257 cut-off events. [2021-03-26 03:27:06,586 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:06,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1287 conditions, 257 events. 0/257 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 808 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 0. Up to 43 conditions per place. [2021-03-26 03:27:06,586 INFO L82 GeneralOperation]: Start removeDead. Operand has 216 places, 131 transitions, 2194 flow [2021-03-26 03:27:06,587 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 129 transitions, 2190 flow [2021-03-26 03:27:06,587 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:06,588 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 214 places, 129 transitions, 2190 flow [2021-03-26 03:27:06,588 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 214 places, 129 transitions, 2190 flow [2021-03-26 03:27:06,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 214 places, 129 transitions, 2190 flow [2021-03-26 03:27:06,606 INFO L129 PetriNetUnfolder]: 0/171 cut-off events. [2021-03-26 03:27:06,606 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:06,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1201 conditions, 171 events. 0/171 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 493 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 0. Up to 43 conditions per place. [2021-03-26 03:27:06,611 INFO L142 LiptonReduction]: Number of co-enabled transitions 10668 [2021-03-26 03:27:09,020 INFO L154 LiptonReduction]: Checked pairs total: 4389 [2021-03-26 03:27:09,020 INFO L156 LiptonReduction]: Total number of compositions: 42 [2021-03-26 03:27:09,020 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2433 [2021-03-26 03:27:09,021 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:27:09,021 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:09,021 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:09,021 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:27:09,021 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:09,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:09,022 INFO L82 PathProgramCache]: Analyzing trace with hash 122019, now seen corresponding path program 1 times [2021-03-26 03:27:09,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:09,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730232036] [2021-03-26 03:27:09,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:27:09,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:27:09,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:27:09,032 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 03:27:09,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730232036] [2021-03-26 03:27:09,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:27:09,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:27:09,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336754326] [2021-03-26 03:27:09,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:27:09,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:27:09,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:27:09,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:27:09,033 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 173 [2021-03-26 03:27:09,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 87 transitions, 2106 flow. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 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 03:27:09,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:27:09,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 173 [2021-03-26 03:27:09,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:27:09,046 INFO L129 PetriNetUnfolder]: 0/86 cut-off events. [2021-03-26 03:27:09,047 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:09,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1118 conditions, 86 events. 0/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 90 event pairs, 0 based on Foata normal form. 43/129 useless extension candidates. Maximal degree in co-relation 0. Up to 43 conditions per place. [2021-03-26 03:27:09,047 INFO L132 encePairwiseOnDemand]: 171/173 looper letters, 0 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2021-03-26 03:27:09,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 86 transitions, 2106 flow [2021-03-26 03:27:09,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:27:09,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:27:09,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2021-03-26 03:27:09,047 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9865125240847784 [2021-03-26 03:27:09,047 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2021-03-26 03:27:09,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2021-03-26 03:27:09,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:27:09,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2021-03-26 03:27:09,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 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 03:27:09,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 03:27:09,049 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 03:27:09,049 INFO L185 Difference]: Start difference. First operand has 172 places, 87 transitions, 2106 flow. Second operand 3 states and 512 transitions. [2021-03-26 03:27:09,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 86 transitions, 2106 flow [2021-03-26 03:27:09,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 86 transitions, 384 flow, removed 861 selfloop flow, removed 0 redundant places. [2021-03-26 03:27:09,069 INFO L241 Difference]: Finished difference. Result has 173 places, 86 transitions, 384 flow [2021-03-26 03:27:09,069 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=173, PETRI_TRANSITIONS=86} [2021-03-26 03:27:09,069 INFO L343 CegarLoopForPetriNet]: 172 programPoint places, 1 predicate places. [2021-03-26 03:27:09,069 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:09,069 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 86 transitions, 384 flow [2021-03-26 03:27:09,069 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 86 transitions, 384 flow [2021-03-26 03:27:09,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 173 places, 86 transitions, 384 flow [2021-03-26 03:27:09,076 INFO L129 PetriNetUnfolder]: 0/86 cut-off events. [2021-03-26 03:27:09,076 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:09,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 86 events. 0/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 86 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 0. Up to 43 conditions per place. [2021-03-26 03:27:09,078 INFO L142 LiptonReduction]: Number of co-enabled transitions 3528 [2021-03-26 03:27:09,080 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:27:09,080 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:27:09,081 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-26 03:27:09,082 INFO L480 AbstractCegarLoop]: Abstraction has has 173 places, 86 transitions, 384 flow [2021-03-26 03:27:09,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 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 03:27:09,082 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:09,082 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:27:09,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-03-26 03:27:09,082 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:09,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:09,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1248466727, now seen corresponding path program 1 times [2021-03-26 03:27:09,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:09,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980804725] [2021-03-26 03:27:09,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:09,088 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:09,089 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:09,093 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:27:09,093 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:27:09,093 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-03-26 03:27:09,093 WARN L342 ceAbstractionStarter]: 42 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:27:09,093 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 43 thread instances. [2021-03-26 03:27:09,125 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:27:09,126 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:27:09,126 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:27:09,126 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:27:09,126 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:27:09,126 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:27:09,126 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:27:09,126 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:27:09,126 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:27:09,126 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:27:09,127 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 221 places, 134 transitions, 2289 flow [2021-03-26 03:27:09,151 INFO L129 PetriNetUnfolder]: 0/263 cut-off events. [2021-03-26 03:27:09,151 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:09,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1339 conditions, 263 events. 0/263 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 856 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 0. Up to 44 conditions per place. [2021-03-26 03:27:09,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 134 transitions, 2289 flow [2021-03-26 03:27:09,152 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 132 transitions, 2285 flow [2021-03-26 03:27:09,152 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:09,152 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 132 transitions, 2285 flow [2021-03-26 03:27:09,152 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 132 transitions, 2285 flow [2021-03-26 03:27:09,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 219 places, 132 transitions, 2285 flow [2021-03-26 03:27:09,171 INFO L129 PetriNetUnfolder]: 0/175 cut-off events. [2021-03-26 03:27:09,172 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:09,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1251 conditions, 175 events. 0/175 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 491 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 0. Up to 44 conditions per place. [2021-03-26 03:27:09,178 INFO L142 LiptonReduction]: Number of co-enabled transitions 11180 [2021-03-26 03:27:11,567 INFO L154 LiptonReduction]: Checked pairs total: 4601 [2021-03-26 03:27:11,567 INFO L156 LiptonReduction]: Total number of compositions: 43 [2021-03-26 03:27:11,567 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2415 [2021-03-26 03:27:11,568 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:27:11,568 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:11,568 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:11,568 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:27:11,568 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:11,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:11,568 INFO L82 PathProgramCache]: Analyzing trace with hash 127651, now seen corresponding path program 1 times [2021-03-26 03:27:11,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:11,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232386401] [2021-03-26 03:27:11,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:27:11,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:27:11,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:27:11,578 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 03:27:11,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232386401] [2021-03-26 03:27:11,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:27:11,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:27:11,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557704606] [2021-03-26 03:27:11,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:27:11,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:27:11,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:27:11,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:27:11,579 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 177 [2021-03-26 03:27:11,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 89 transitions, 2199 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 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 03:27:11,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:27:11,579 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 177 [2021-03-26 03:27:11,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:27:11,593 INFO L129 PetriNetUnfolder]: 0/88 cut-off events. [2021-03-26 03:27:11,593 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:11,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1166 conditions, 88 events. 0/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 83 event pairs, 0 based on Foata normal form. 44/132 useless extension candidates. Maximal degree in co-relation 0. Up to 44 conditions per place. [2021-03-26 03:27:11,593 INFO L132 encePairwiseOnDemand]: 175/177 looper letters, 0 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2021-03-26 03:27:11,593 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 88 transitions, 2199 flow [2021-03-26 03:27:11,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:27:11,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:27:11,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 524 transitions. [2021-03-26 03:27:11,594 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9868173258003766 [2021-03-26 03:27:11,594 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 524 transitions. [2021-03-26 03:27:11,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 524 transitions. [2021-03-26 03:27:11,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:27:11,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 524 transitions. [2021-03-26 03:27:11,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 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 03:27:11,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 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 03:27:11,595 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 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 03:27:11,595 INFO L185 Difference]: Start difference. First operand has 176 places, 89 transitions, 2199 flow. Second operand 3 states and 524 transitions. [2021-03-26 03:27:11,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 88 transitions, 2199 flow [2021-03-26 03:27:11,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 88 transitions, 393 flow, removed 903 selfloop flow, removed 0 redundant places. [2021-03-26 03:27:11,617 INFO L241 Difference]: Finished difference. Result has 177 places, 88 transitions, 393 flow [2021-03-26 03:27:11,617 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=393, PETRI_PLACES=177, PETRI_TRANSITIONS=88} [2021-03-26 03:27:11,617 INFO L343 CegarLoopForPetriNet]: 176 programPoint places, 1 predicate places. [2021-03-26 03:27:11,617 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:11,617 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 88 transitions, 393 flow [2021-03-26 03:27:11,617 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 88 transitions, 393 flow [2021-03-26 03:27:11,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 177 places, 88 transitions, 393 flow [2021-03-26 03:27:11,625 INFO L129 PetriNetUnfolder]: 0/88 cut-off events. [2021-03-26 03:27:11,625 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:11,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 88 events. 0/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 85 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 0. Up to 44 conditions per place. [2021-03-26 03:27:11,626 INFO L142 LiptonReduction]: Number of co-enabled transitions 3698 [2021-03-26 03:27:11,629 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:27:11,629 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:27:11,629 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-03-26 03:27:11,630 INFO L480 AbstractCegarLoop]: Abstraction has has 177 places, 88 transitions, 393 flow [2021-03-26 03:27:11,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 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 03:27:11,630 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:11,630 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:27:11,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-03-26 03:27:11,630 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:11,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:11,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1295684672, now seen corresponding path program 1 times [2021-03-26 03:27:11,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:11,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934660645] [2021-03-26 03:27:11,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:11,637 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:11,638 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:11,641 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:27:11,641 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:27:11,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-03-26 03:27:11,642 WARN L342 ceAbstractionStarter]: 43 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:27:11,642 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 44 thread instances. [2021-03-26 03:27:11,671 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:27:11,671 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:27:11,671 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:27:11,671 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:27:11,671 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:27:11,671 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:27:11,671 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:27:11,671 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:27:11,671 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:27:11,671 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:27:11,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 226 places, 137 transitions, 2386 flow [2021-03-26 03:27:11,696 INFO L129 PetriNetUnfolder]: 0/269 cut-off events. [2021-03-26 03:27:11,696 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:11,696 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1392 conditions, 269 events. 0/269 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 881 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 0. Up to 45 conditions per place. [2021-03-26 03:27:11,696 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 137 transitions, 2386 flow [2021-03-26 03:27:11,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 135 transitions, 2382 flow [2021-03-26 03:27:11,697 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:11,697 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 224 places, 135 transitions, 2382 flow [2021-03-26 03:27:11,697 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 224 places, 135 transitions, 2382 flow [2021-03-26 03:27:11,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 224 places, 135 transitions, 2382 flow [2021-03-26 03:27:11,716 INFO L129 PetriNetUnfolder]: 0/179 cut-off events. [2021-03-26 03:27:11,717 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:11,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 179 events. 0/179 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 557 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 0. Up to 45 conditions per place. [2021-03-26 03:27:11,723 INFO L142 LiptonReduction]: Number of co-enabled transitions 11704 [2021-03-26 03:27:14,204 INFO L154 LiptonReduction]: Checked pairs total: 4818 [2021-03-26 03:27:14,205 INFO L156 LiptonReduction]: Total number of compositions: 44 [2021-03-26 03:27:14,205 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2508 [2021-03-26 03:27:14,206 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:27:14,206 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:14,206 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:14,206 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:27:14,206 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:14,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:14,206 INFO L82 PathProgramCache]: Analyzing trace with hash 133411, now seen corresponding path program 1 times [2021-03-26 03:27:14,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:14,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665385106] [2021-03-26 03:27:14,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:27:14,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:27:14,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:27:14,215 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 03:27:14,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665385106] [2021-03-26 03:27:14,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:27:14,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:27:14,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32068074] [2021-03-26 03:27:14,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:27:14,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:27:14,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:27:14,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:27:14,216 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 181 [2021-03-26 03:27:14,217 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 91 transitions, 2294 flow. Second operand has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 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 03:27:14,217 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:27:14,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 181 [2021-03-26 03:27:14,217 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:27:14,231 INFO L129 PetriNetUnfolder]: 0/90 cut-off events. [2021-03-26 03:27:14,231 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:14,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 90 events. 0/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 80 event pairs, 0 based on Foata normal form. 45/135 useless extension candidates. Maximal degree in co-relation 0. Up to 45 conditions per place. [2021-03-26 03:27:14,231 INFO L132 encePairwiseOnDemand]: 179/181 looper letters, 0 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2021-03-26 03:27:14,231 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 90 transitions, 2294 flow [2021-03-26 03:27:14,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:27:14,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:27:14,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2021-03-26 03:27:14,232 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9871086556169429 [2021-03-26 03:27:14,232 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2021-03-26 03:27:14,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2021-03-26 03:27:14,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:27:14,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2021-03-26 03:27:14,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 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 03:27:14,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 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 03:27:14,233 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 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 03:27:14,233 INFO L185 Difference]: Start difference. First operand has 180 places, 91 transitions, 2294 flow. Second operand 3 states and 536 transitions. [2021-03-26 03:27:14,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 90 transitions, 2294 flow [2021-03-26 03:27:14,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 90 transitions, 402 flow, removed 946 selfloop flow, removed 0 redundant places. [2021-03-26 03:27:14,256 INFO L241 Difference]: Finished difference. Result has 181 places, 90 transitions, 402 flow [2021-03-26 03:27:14,256 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=402, PETRI_PLACES=181, PETRI_TRANSITIONS=90} [2021-03-26 03:27:14,256 INFO L343 CegarLoopForPetriNet]: 180 programPoint places, 1 predicate places. [2021-03-26 03:27:14,256 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:14,256 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 90 transitions, 402 flow [2021-03-26 03:27:14,256 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 90 transitions, 402 flow [2021-03-26 03:27:14,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 181 places, 90 transitions, 402 flow [2021-03-26 03:27:14,264 INFO L129 PetriNetUnfolder]: 0/90 cut-off events. [2021-03-26 03:27:14,264 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:14,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 90 events. 0/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 88 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 0. Up to 45 conditions per place. [2021-03-26 03:27:14,265 INFO L142 LiptonReduction]: Number of co-enabled transitions 3872 [2021-03-26 03:27:14,268 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:27:14,268 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:27:14,268 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-03-26 03:27:14,269 INFO L480 AbstractCegarLoop]: Abstraction has has 181 places, 90 transitions, 402 flow [2021-03-26 03:27:14,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 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 03:27:14,269 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:14,270 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:27:14,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-03-26 03:27:14,270 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:14,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:14,270 INFO L82 PathProgramCache]: Analyzing trace with hash -199292694, now seen corresponding path program 1 times [2021-03-26 03:27:14,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:14,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616012594] [2021-03-26 03:27:14,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:14,277 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:14,278 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:14,282 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:27:14,282 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:27:14,282 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-03-26 03:27:14,282 WARN L342 ceAbstractionStarter]: 44 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:27:14,282 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 45 thread instances. [2021-03-26 03:27:14,323 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:27:14,323 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:27:14,323 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:27:14,324 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:27:14,324 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:27:14,324 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:27:14,324 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:27:14,324 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:27:14,324 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:27:14,324 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:27:14,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 231 places, 140 transitions, 2485 flow [2021-03-26 03:27:14,350 INFO L129 PetriNetUnfolder]: 0/275 cut-off events. [2021-03-26 03:27:14,350 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:14,350 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1446 conditions, 275 events. 0/275 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 874 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 0. Up to 46 conditions per place. [2021-03-26 03:27:14,350 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 140 transitions, 2485 flow [2021-03-26 03:27:14,351 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 138 transitions, 2481 flow [2021-03-26 03:27:14,351 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:14,351 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 229 places, 138 transitions, 2481 flow [2021-03-26 03:27:14,351 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 229 places, 138 transitions, 2481 flow [2021-03-26 03:27:14,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 229 places, 138 transitions, 2481 flow [2021-03-26 03:27:14,372 INFO L129 PetriNetUnfolder]: 0/183 cut-off events. [2021-03-26 03:27:14,372 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:14,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1354 conditions, 183 events. 0/183 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 439 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 0. Up to 46 conditions per place. [2021-03-26 03:27:14,379 INFO L142 LiptonReduction]: Number of co-enabled transitions 12240 [2021-03-26 03:27:17,000 INFO L154 LiptonReduction]: Checked pairs total: 5040 [2021-03-26 03:27:17,001 INFO L156 LiptonReduction]: Total number of compositions: 45 [2021-03-26 03:27:17,001 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2650 [2021-03-26 03:27:17,002 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:27:17,002 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:17,002 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:17,002 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:27:17,002 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:17,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:17,002 INFO L82 PathProgramCache]: Analyzing trace with hash 139299, now seen corresponding path program 1 times [2021-03-26 03:27:17,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:17,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067428187] [2021-03-26 03:27:17,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:27:17,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:27:17,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:27:17,011 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 03:27:17,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067428187] [2021-03-26 03:27:17,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:27:17,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:27:17,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691107758] [2021-03-26 03:27:17,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:27:17,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:27:17,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:27:17,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:27:17,012 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 185 [2021-03-26 03:27:17,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 93 transitions, 2391 flow. Second operand has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 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 03:27:17,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:27:17,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 185 [2021-03-26 03:27:17,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:27:17,028 INFO L129 PetriNetUnfolder]: 0/92 cut-off events. [2021-03-26 03:27:17,028 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:17,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1265 conditions, 92 events. 0/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 79 event pairs, 0 based on Foata normal form. 46/138 useless extension candidates. Maximal degree in co-relation 0. Up to 46 conditions per place. [2021-03-26 03:27:17,029 INFO L132 encePairwiseOnDemand]: 183/185 looper letters, 0 selfloop transitions, 1 changer transitions 0/92 dead transitions. [2021-03-26 03:27:17,029 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 92 transitions, 2391 flow [2021-03-26 03:27:17,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:27:17,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:27:17,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 548 transitions. [2021-03-26 03:27:17,029 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9873873873873874 [2021-03-26 03:27:17,029 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 548 transitions. [2021-03-26 03:27:17,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 548 transitions. [2021-03-26 03:27:17,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:27:17,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 548 transitions. [2021-03-26 03:27:17,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 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 03:27:17,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 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 03:27:17,031 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 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 03:27:17,031 INFO L185 Difference]: Start difference. First operand has 184 places, 93 transitions, 2391 flow. Second operand 3 states and 548 transitions. [2021-03-26 03:27:17,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 92 transitions, 2391 flow [2021-03-26 03:27:17,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 92 transitions, 411 flow, removed 990 selfloop flow, removed 0 redundant places. [2021-03-26 03:27:17,056 INFO L241 Difference]: Finished difference. Result has 185 places, 92 transitions, 411 flow [2021-03-26 03:27:17,056 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=411, PETRI_PLACES=185, PETRI_TRANSITIONS=92} [2021-03-26 03:27:17,056 INFO L343 CegarLoopForPetriNet]: 184 programPoint places, 1 predicate places. [2021-03-26 03:27:17,057 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:17,057 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 92 transitions, 411 flow [2021-03-26 03:27:17,057 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 92 transitions, 411 flow [2021-03-26 03:27:17,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 185 places, 92 transitions, 411 flow [2021-03-26 03:27:17,065 INFO L129 PetriNetUnfolder]: 0/92 cut-off events. [2021-03-26 03:27:17,065 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:17,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 92 events. 0/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 83 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 0. Up to 46 conditions per place. [2021-03-26 03:27:17,066 INFO L142 LiptonReduction]: Number of co-enabled transitions 4050 [2021-03-26 03:27:17,069 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:27:17,069 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:27:17,069 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-03-26 03:27:17,071 INFO L480 AbstractCegarLoop]: Abstraction has has 185 places, 92 transitions, 411 flow [2021-03-26 03:27:17,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 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 03:27:17,071 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:17,071 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:27:17,071 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-03-26 03:27:17,071 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:17,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:17,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1531564085, now seen corresponding path program 1 times [2021-03-26 03:27:17,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:17,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617214469] [2021-03-26 03:27:17,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:17,078 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:17,080 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:17,084 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:27:17,084 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:27:17,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-03-26 03:27:17,084 WARN L342 ceAbstractionStarter]: 45 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:27:17,084 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 46 thread instances. [2021-03-26 03:27:17,121 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:27:17,121 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:27:17,121 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:27:17,121 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:27:17,121 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:27:17,122 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:27:17,122 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:27:17,122 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:27:17,122 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:27:17,122 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:27:17,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 236 places, 143 transitions, 2586 flow [2021-03-26 03:27:17,150 INFO L129 PetriNetUnfolder]: 0/281 cut-off events. [2021-03-26 03:27:17,150 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:17,150 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1501 conditions, 281 events. 0/281 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 939 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 0. Up to 47 conditions per place. [2021-03-26 03:27:17,150 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 143 transitions, 2586 flow [2021-03-26 03:27:17,152 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 141 transitions, 2582 flow [2021-03-26 03:27:17,152 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:17,152 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 234 places, 141 transitions, 2582 flow [2021-03-26 03:27:17,152 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 234 places, 141 transitions, 2582 flow [2021-03-26 03:27:17,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 234 places, 141 transitions, 2582 flow [2021-03-26 03:27:17,174 INFO L129 PetriNetUnfolder]: 0/187 cut-off events. [2021-03-26 03:27:17,175 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:17,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1407 conditions, 187 events. 0/187 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 485 event pairs, 0 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 0. Up to 47 conditions per place. [2021-03-26 03:27:17,182 INFO L142 LiptonReduction]: Number of co-enabled transitions 12788 [2021-03-26 03:27:20,074 INFO L154 LiptonReduction]: Checked pairs total: 5267 [2021-03-26 03:27:20,074 INFO L156 LiptonReduction]: Total number of compositions: 46 [2021-03-26 03:27:20,074 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2922 [2021-03-26 03:27:20,075 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:27:20,075 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:20,075 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:20,075 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:27:20,075 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:20,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:20,075 INFO L82 PathProgramCache]: Analyzing trace with hash 145315, now seen corresponding path program 1 times [2021-03-26 03:27:20,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:20,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64945106] [2021-03-26 03:27:20,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:27:20,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:27:20,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:27:20,087 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 03:27:20,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64945106] [2021-03-26 03:27:20,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:27:20,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:27:20,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274792221] [2021-03-26 03:27:20,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:27:20,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:27:20,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:27:20,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:27:20,088 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 189 [2021-03-26 03:27:20,088 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 95 transitions, 2490 flow. Second operand has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 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 03:27:20,088 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:27:20,088 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 189 [2021-03-26 03:27:20,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:27:20,103 INFO L129 PetriNetUnfolder]: 0/94 cut-off events. [2021-03-26 03:27:20,103 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:20,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 94 events. 0/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 90 event pairs, 0 based on Foata normal form. 47/141 useless extension candidates. Maximal degree in co-relation 0. Up to 47 conditions per place. [2021-03-26 03:27:20,104 INFO L132 encePairwiseOnDemand]: 187/189 looper letters, 0 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2021-03-26 03:27:20,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 94 transitions, 2490 flow [2021-03-26 03:27:20,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:27:20,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:27:20,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 560 transitions. [2021-03-26 03:27:20,104 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9876543209876543 [2021-03-26 03:27:20,104 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 560 transitions. [2021-03-26 03:27:20,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 560 transitions. [2021-03-26 03:27:20,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:27:20,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 560 transitions. [2021-03-26 03:27:20,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 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 03:27:20,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 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 03:27:20,106 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 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 03:27:20,106 INFO L185 Difference]: Start difference. First operand has 188 places, 95 transitions, 2490 flow. Second operand 3 states and 560 transitions. [2021-03-26 03:27:20,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 94 transitions, 2490 flow [2021-03-26 03:27:20,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 94 transitions, 420 flow, removed 1035 selfloop flow, removed 0 redundant places. [2021-03-26 03:27:20,133 INFO L241 Difference]: Finished difference. Result has 189 places, 94 transitions, 420 flow [2021-03-26 03:27:20,133 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=420, PETRI_PLACES=189, PETRI_TRANSITIONS=94} [2021-03-26 03:27:20,133 INFO L343 CegarLoopForPetriNet]: 188 programPoint places, 1 predicate places. [2021-03-26 03:27:20,133 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:20,133 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 189 places, 94 transitions, 420 flow [2021-03-26 03:27:20,133 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 189 places, 94 transitions, 420 flow [2021-03-26 03:27:20,134 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 189 places, 94 transitions, 420 flow [2021-03-26 03:27:20,141 INFO L129 PetriNetUnfolder]: 0/94 cut-off events. [2021-03-26 03:27:20,141 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:20,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 94 events. 0/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 78 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 0. Up to 47 conditions per place. [2021-03-26 03:27:20,142 INFO L142 LiptonReduction]: Number of co-enabled transitions 4232 [2021-03-26 03:27:20,146 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:27:20,146 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:27:20,146 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-03-26 03:27:20,147 INFO L480 AbstractCegarLoop]: Abstraction has has 189 places, 94 transitions, 420 flow [2021-03-26 03:27:20,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 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 03:27:20,147 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:20,147 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:27:20,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-03-26 03:27:20,147 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:20,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:20,147 INFO L82 PathProgramCache]: Analyzing trace with hash -790489427, now seen corresponding path program 1 times [2021-03-26 03:27:20,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:20,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012606452] [2021-03-26 03:27:20,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:20,154 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:20,155 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:20,159 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:27:20,159 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:27:20,159 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-03-26 03:27:20,159 WARN L342 ceAbstractionStarter]: 46 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:27:20,159 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 47 thread instances. [2021-03-26 03:27:20,193 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:27:20,193 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:27:20,193 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:27:20,193 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:27:20,194 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:27:20,194 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:27:20,194 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:27:20,194 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:27:20,194 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:27:20,194 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:27:20,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 241 places, 146 transitions, 2689 flow [2021-03-26 03:27:20,222 INFO L129 PetriNetUnfolder]: 0/287 cut-off events. [2021-03-26 03:27:20,222 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:20,222 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1557 conditions, 287 events. 0/287 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 908 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 0. Up to 48 conditions per place. [2021-03-26 03:27:20,222 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 146 transitions, 2689 flow [2021-03-26 03:27:20,223 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 144 transitions, 2685 flow [2021-03-26 03:27:20,223 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:20,223 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 144 transitions, 2685 flow [2021-03-26 03:27:20,223 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 144 transitions, 2685 flow [2021-03-26 03:27:20,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 239 places, 144 transitions, 2685 flow [2021-03-26 03:27:20,245 INFO L129 PetriNetUnfolder]: 0/191 cut-off events. [2021-03-26 03:27:20,246 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:20,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1461 conditions, 191 events. 0/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 495 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 0. Up to 48 conditions per place. [2021-03-26 03:27:20,253 INFO L142 LiptonReduction]: Number of co-enabled transitions 13348 [2021-03-26 03:27:23,121 INFO L154 LiptonReduction]: Checked pairs total: 5499 [2021-03-26 03:27:23,121 INFO L156 LiptonReduction]: Total number of compositions: 47 [2021-03-26 03:27:23,121 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2898 [2021-03-26 03:27:23,122 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:27:23,122 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:23,122 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:23,122 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:27:23,122 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:23,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:23,123 INFO L82 PathProgramCache]: Analyzing trace with hash 151459, now seen corresponding path program 1 times [2021-03-26 03:27:23,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:23,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876084429] [2021-03-26 03:27:23,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:27:23,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:27:23,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:27:23,132 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 03:27:23,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876084429] [2021-03-26 03:27:23,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:27:23,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:27:23,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556368385] [2021-03-26 03:27:23,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:27:23,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:27:23,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:27:23,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:27:23,132 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 193 [2021-03-26 03:27:23,133 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 97 transitions, 2591 flow. Second operand has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 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 03:27:23,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:27:23,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 193 [2021-03-26 03:27:23,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:27:23,149 INFO L129 PetriNetUnfolder]: 0/96 cut-off events. [2021-03-26 03:27:23,149 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:23,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1368 conditions, 96 events. 0/96 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 85 event pairs, 0 based on Foata normal form. 48/144 useless extension candidates. Maximal degree in co-relation 0. Up to 48 conditions per place. [2021-03-26 03:27:23,149 INFO L132 encePairwiseOnDemand]: 191/193 looper letters, 0 selfloop transitions, 1 changer transitions 0/96 dead transitions. [2021-03-26 03:27:23,149 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 96 transitions, 2591 flow [2021-03-26 03:27:23,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:27:23,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:27:23,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 572 transitions. [2021-03-26 03:27:23,150 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9879101899827288 [2021-03-26 03:27:23,150 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 572 transitions. [2021-03-26 03:27:23,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 572 transitions. [2021-03-26 03:27:23,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:27:23,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 572 transitions. [2021-03-26 03:27:23,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 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 03:27:23,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 03:27:23,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 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 03:27:23,151 INFO L185 Difference]: Start difference. First operand has 192 places, 97 transitions, 2591 flow. Second operand 3 states and 572 transitions. [2021-03-26 03:27:23,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 96 transitions, 2591 flow [2021-03-26 03:27:23,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 96 transitions, 429 flow, removed 1081 selfloop flow, removed 0 redundant places. [2021-03-26 03:27:23,179 INFO L241 Difference]: Finished difference. Result has 193 places, 96 transitions, 429 flow [2021-03-26 03:27:23,179 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=429, PETRI_PLACES=193, PETRI_TRANSITIONS=96} [2021-03-26 03:27:23,179 INFO L343 CegarLoopForPetriNet]: 192 programPoint places, 1 predicate places. [2021-03-26 03:27:23,179 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:23,179 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 96 transitions, 429 flow [2021-03-26 03:27:23,179 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 96 transitions, 429 flow [2021-03-26 03:27:23,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 193 places, 96 transitions, 429 flow [2021-03-26 03:27:23,187 INFO L129 PetriNetUnfolder]: 0/96 cut-off events. [2021-03-26 03:27:23,187 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:23,187 INFO L84 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 96 events. 0/96 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 91 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 0. Up to 48 conditions per place. [2021-03-26 03:27:23,189 INFO L142 LiptonReduction]: Number of co-enabled transitions 4418 [2021-03-26 03:27:23,192 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:27:23,192 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:27:23,192 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-03-26 03:27:23,193 INFO L480 AbstractCegarLoop]: Abstraction has has 193 places, 96 transitions, 429 flow [2021-03-26 03:27:23,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 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 03:27:23,194 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:23,194 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:27:23,194 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-03-26 03:27:23,194 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:23,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:23,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1706992282, now seen corresponding path program 1 times [2021-03-26 03:27:23,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:23,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864641972] [2021-03-26 03:27:23,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:23,201 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:23,202 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:23,206 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:27:23,206 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:27:23,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-03-26 03:27:23,206 WARN L342 ceAbstractionStarter]: 47 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:27:23,206 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 48 thread instances. [2021-03-26 03:27:23,240 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:27:23,241 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:27:23,241 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:27:23,241 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:27:23,241 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:27:23,241 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:27:23,241 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:27:23,241 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:27:23,241 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:27:23,241 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:27:23,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 246 places, 149 transitions, 2794 flow [2021-03-26 03:27:23,273 INFO L129 PetriNetUnfolder]: 0/293 cut-off events. [2021-03-26 03:27:23,273 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:23,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1614 conditions, 293 events. 0/293 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 964 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 0. Up to 49 conditions per place. [2021-03-26 03:27:23,273 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 149 transitions, 2794 flow [2021-03-26 03:27:23,274 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 147 transitions, 2790 flow [2021-03-26 03:27:23,274 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:23,274 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 147 transitions, 2790 flow [2021-03-26 03:27:23,274 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 147 transitions, 2790 flow [2021-03-26 03:27:23,275 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 244 places, 147 transitions, 2790 flow [2021-03-26 03:27:23,298 INFO L129 PetriNetUnfolder]: 0/195 cut-off events. [2021-03-26 03:27:23,298 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:23,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1516 conditions, 195 events. 0/195 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 458 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 0. Up to 49 conditions per place. [2021-03-26 03:27:23,306 INFO L142 LiptonReduction]: Number of co-enabled transitions 13920 [2021-03-26 03:27:26,317 INFO L154 LiptonReduction]: Checked pairs total: 5736 [2021-03-26 03:27:26,317 INFO L156 LiptonReduction]: Total number of compositions: 48 [2021-03-26 03:27:26,317 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3043 [2021-03-26 03:27:26,318 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:27:26,318 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:26,318 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:26,318 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:27:26,318 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:26,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:26,319 INFO L82 PathProgramCache]: Analyzing trace with hash 157731, now seen corresponding path program 1 times [2021-03-26 03:27:26,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:26,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727701672] [2021-03-26 03:27:26,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:27:26,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:27:26,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:27:26,329 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 03:27:26,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727701672] [2021-03-26 03:27:26,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:27:26,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:27:26,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487357699] [2021-03-26 03:27:26,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:27:26,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:27:26,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:27:26,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:27:26,330 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 197 [2021-03-26 03:27:26,330 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 99 transitions, 2694 flow. Second operand has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 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 03:27:26,330 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:27:26,330 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 197 [2021-03-26 03:27:26,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:27:26,347 INFO L129 PetriNetUnfolder]: 0/98 cut-off events. [2021-03-26 03:27:26,347 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:26,348 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 98 events. 0/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 84 event pairs, 0 based on Foata normal form. 49/147 useless extension candidates. Maximal degree in co-relation 0. Up to 49 conditions per place. [2021-03-26 03:27:26,348 INFO L132 encePairwiseOnDemand]: 195/197 looper letters, 0 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2021-03-26 03:27:26,348 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 98 transitions, 2694 flow [2021-03-26 03:27:26,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:27:26,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:27:26,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 584 transitions. [2021-03-26 03:27:26,348 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.988155668358714 [2021-03-26 03:27:26,348 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 584 transitions. [2021-03-26 03:27:26,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 584 transitions. [2021-03-26 03:27:26,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:27:26,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 584 transitions. [2021-03-26 03:27:26,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 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 03:27:26,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 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 03:27:26,350 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 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 03:27:26,350 INFO L185 Difference]: Start difference. First operand has 196 places, 99 transitions, 2694 flow. Second operand 3 states and 584 transitions. [2021-03-26 03:27:26,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 98 transitions, 2694 flow [2021-03-26 03:27:26,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 98 transitions, 438 flow, removed 1128 selfloop flow, removed 0 redundant places. [2021-03-26 03:27:26,377 INFO L241 Difference]: Finished difference. Result has 197 places, 98 transitions, 438 flow [2021-03-26 03:27:26,377 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=438, PETRI_PLACES=197, PETRI_TRANSITIONS=98} [2021-03-26 03:27:26,377 INFO L343 CegarLoopForPetriNet]: 196 programPoint places, 1 predicate places. [2021-03-26 03:27:26,377 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:26,377 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 98 transitions, 438 flow [2021-03-26 03:27:26,377 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 98 transitions, 438 flow [2021-03-26 03:27:26,378 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 197 places, 98 transitions, 438 flow [2021-03-26 03:27:26,386 INFO L129 PetriNetUnfolder]: 0/98 cut-off events. [2021-03-26 03:27:26,386 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:26,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 98 events. 0/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 94 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 0. Up to 49 conditions per place. [2021-03-26 03:27:26,387 INFO L142 LiptonReduction]: Number of co-enabled transitions 4608 [2021-03-26 03:27:26,391 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:27:26,391 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:27:26,391 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14 [2021-03-26 03:27:26,392 INFO L480 AbstractCegarLoop]: Abstraction has has 197 places, 98 transitions, 438 flow [2021-03-26 03:27:26,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 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 03:27:26,392 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:26,392 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:27:26,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-03-26 03:27:26,393 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:26,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:26,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1429030512, now seen corresponding path program 1 times [2021-03-26 03:27:26,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:26,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51526131] [2021-03-26 03:27:26,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:26,400 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:26,402 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:26,406 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:27:26,406 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:27:26,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-03-26 03:27:26,407 WARN L342 ceAbstractionStarter]: 48 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:27:26,407 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 49 thread instances. [2021-03-26 03:27:26,439 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:27:26,440 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:27:26,440 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:27:26,440 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:27:26,440 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:27:26,440 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:27:26,440 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:27:26,440 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:27:26,440 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:27:26,440 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:27:26,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 251 places, 152 transitions, 2901 flow [2021-03-26 03:27:26,471 INFO L129 PetriNetUnfolder]: 0/299 cut-off events. [2021-03-26 03:27:26,471 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:26,471 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1672 conditions, 299 events. 0/299 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 994 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 0. Up to 50 conditions per place. [2021-03-26 03:27:26,471 INFO L82 GeneralOperation]: Start removeDead. Operand has 251 places, 152 transitions, 2901 flow [2021-03-26 03:27:26,473 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 150 transitions, 2897 flow [2021-03-26 03:27:26,473 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:26,473 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 249 places, 150 transitions, 2897 flow [2021-03-26 03:27:26,473 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 249 places, 150 transitions, 2897 flow [2021-03-26 03:27:26,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 249 places, 150 transitions, 2897 flow [2021-03-26 03:27:26,498 INFO L129 PetriNetUnfolder]: 0/199 cut-off events. [2021-03-26 03:27:26,498 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:26,498 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1572 conditions, 199 events. 0/199 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 548 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 0. Up to 50 conditions per place. [2021-03-26 03:27:26,506 INFO L142 LiptonReduction]: Number of co-enabled transitions 14504 [2021-03-26 03:27:29,694 INFO L154 LiptonReduction]: Checked pairs total: 5978 [2021-03-26 03:27:29,695 INFO L156 LiptonReduction]: Total number of compositions: 49 [2021-03-26 03:27:29,695 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3222 [2021-03-26 03:27:29,696 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:27:29,696 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:29,696 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:29,696 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:27:29,696 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:29,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:29,696 INFO L82 PathProgramCache]: Analyzing trace with hash 164131, now seen corresponding path program 1 times [2021-03-26 03:27:29,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:29,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564059802] [2021-03-26 03:27:29,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:27:29,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:27:29,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:27:29,707 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 03:27:29,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564059802] [2021-03-26 03:27:29,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:27:29,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:27:29,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944431352] [2021-03-26 03:27:29,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:27:29,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:27:29,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:27:29,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:27:29,708 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 201 [2021-03-26 03:27:29,708 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 101 transitions, 2799 flow. Second operand has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 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 03:27:29,709 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:27:29,709 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 201 [2021-03-26 03:27:29,709 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:27:29,726 INFO L129 PetriNetUnfolder]: 0/100 cut-off events. [2021-03-26 03:27:29,726 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:29,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1475 conditions, 100 events. 0/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 101 event pairs, 0 based on Foata normal form. 50/150 useless extension candidates. Maximal degree in co-relation 0. Up to 50 conditions per place. [2021-03-26 03:27:29,726 INFO L132 encePairwiseOnDemand]: 199/201 looper letters, 0 selfloop transitions, 1 changer transitions 0/100 dead transitions. [2021-03-26 03:27:29,726 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 100 transitions, 2799 flow [2021-03-26 03:27:29,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:27:29,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:27:29,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 596 transitions. [2021-03-26 03:27:29,727 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.988391376451078 [2021-03-26 03:27:29,727 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 596 transitions. [2021-03-26 03:27:29,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 596 transitions. [2021-03-26 03:27:29,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:27:29,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 596 transitions. [2021-03-26 03:27:29,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 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 03:27:29,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 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 03:27:29,728 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 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 03:27:29,728 INFO L185 Difference]: Start difference. First operand has 200 places, 101 transitions, 2799 flow. Second operand 3 states and 596 transitions. [2021-03-26 03:27:29,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 100 transitions, 2799 flow [2021-03-26 03:27:29,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 100 transitions, 447 flow, removed 1176 selfloop flow, removed 0 redundant places. [2021-03-26 03:27:29,756 INFO L241 Difference]: Finished difference. Result has 201 places, 100 transitions, 447 flow [2021-03-26 03:27:29,756 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=447, PETRI_PLACES=201, PETRI_TRANSITIONS=100} [2021-03-26 03:27:29,756 INFO L343 CegarLoopForPetriNet]: 200 programPoint places, 1 predicate places. [2021-03-26 03:27:29,756 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:29,756 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 201 places, 100 transitions, 447 flow [2021-03-26 03:27:29,756 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 201 places, 100 transitions, 447 flow [2021-03-26 03:27:29,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 201 places, 100 transitions, 447 flow [2021-03-26 03:27:29,765 INFO L129 PetriNetUnfolder]: 0/100 cut-off events. [2021-03-26 03:27:29,765 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:29,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 100 events. 0/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 83 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 0. Up to 50 conditions per place. [2021-03-26 03:27:29,766 INFO L142 LiptonReduction]: Number of co-enabled transitions 4802 [2021-03-26 03:27:29,770 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:27:29,770 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:27:29,770 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14 [2021-03-26 03:27:29,771 INFO L480 AbstractCegarLoop]: Abstraction has has 201 places, 100 transitions, 447 flow [2021-03-26 03:27:29,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 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 03:27:29,771 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:29,771 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:27:29,771 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-03-26 03:27:29,771 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:29,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:29,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1177315567, now seen corresponding path program 1 times [2021-03-26 03:27:29,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:29,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388734136] [2021-03-26 03:27:29,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:29,780 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:29,781 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:29,786 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:27:29,786 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:27:29,786 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-03-26 03:27:29,786 WARN L342 ceAbstractionStarter]: 49 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:27:29,787 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 50 thread instances. [2021-03-26 03:27:29,823 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:27:29,823 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:27:29,824 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:27:29,824 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:27:29,824 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:27:29,824 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:27:29,824 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:27:29,824 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:27:29,824 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:27:29,824 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:27:29,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 256 places, 155 transitions, 3010 flow [2021-03-26 03:27:29,857 INFO L129 PetriNetUnfolder]: 0/305 cut-off events. [2021-03-26 03:27:29,857 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:29,857 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1731 conditions, 305 events. 0/305 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1016 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 0. Up to 51 conditions per place. [2021-03-26 03:27:29,857 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 155 transitions, 3010 flow [2021-03-26 03:27:29,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 153 transitions, 3006 flow [2021-03-26 03:27:29,859 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:29,859 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 254 places, 153 transitions, 3006 flow [2021-03-26 03:27:29,859 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 254 places, 153 transitions, 3006 flow [2021-03-26 03:27:29,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 254 places, 153 transitions, 3006 flow [2021-03-26 03:27:29,885 INFO L129 PetriNetUnfolder]: 0/203 cut-off events. [2021-03-26 03:27:29,885 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:29,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1629 conditions, 203 events. 0/203 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 646 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 0. Up to 51 conditions per place. [2021-03-26 03:27:29,894 INFO L142 LiptonReduction]: Number of co-enabled transitions 15100 [2021-03-26 03:27:33,314 INFO L154 LiptonReduction]: Checked pairs total: 6225 [2021-03-26 03:27:33,315 INFO L156 LiptonReduction]: Total number of compositions: 50 [2021-03-26 03:27:33,315 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3456 [2021-03-26 03:27:33,316 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:27:33,316 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:33,316 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:33,316 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:27:33,317 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:33,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:33,317 INFO L82 PathProgramCache]: Analyzing trace with hash 170659, now seen corresponding path program 1 times [2021-03-26 03:27:33,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:33,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858425787] [2021-03-26 03:27:33,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:27:33,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:27:33,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:27:33,328 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 03:27:33,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858425787] [2021-03-26 03:27:33,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:27:33,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:27:33,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005552596] [2021-03-26 03:27:33,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:27:33,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:27:33,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:27:33,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:27:33,329 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 205 [2021-03-26 03:27:33,329 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 103 transitions, 2906 flow. Second operand has 3 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 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 03:27:33,329 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:27:33,329 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 205 [2021-03-26 03:27:33,329 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:27:33,348 INFO L129 PetriNetUnfolder]: 0/102 cut-off events. [2021-03-26 03:27:33,348 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:33,348 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1530 conditions, 102 events. 0/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 92 event pairs, 0 based on Foata normal form. 51/153 useless extension candidates. Maximal degree in co-relation 0. Up to 51 conditions per place. [2021-03-26 03:27:33,348 INFO L132 encePairwiseOnDemand]: 203/205 looper letters, 0 selfloop transitions, 1 changer transitions 0/102 dead transitions. [2021-03-26 03:27:33,348 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 102 transitions, 2906 flow [2021-03-26 03:27:33,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:27:33,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:27:33,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2021-03-26 03:27:33,348 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9886178861788618 [2021-03-26 03:27:33,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2021-03-26 03:27:33,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2021-03-26 03:27:33,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:27:33,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2021-03-26 03:27:33,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 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 03:27:33,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 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 03:27:33,350 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 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 03:27:33,350 INFO L185 Difference]: Start difference. First operand has 204 places, 103 transitions, 2906 flow. Second operand 3 states and 608 transitions. [2021-03-26 03:27:33,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 102 transitions, 2906 flow [2021-03-26 03:27:33,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 102 transitions, 456 flow, removed 1225 selfloop flow, removed 0 redundant places. [2021-03-26 03:27:33,380 INFO L241 Difference]: Finished difference. Result has 205 places, 102 transitions, 456 flow [2021-03-26 03:27:33,380 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=456, PETRI_PLACES=205, PETRI_TRANSITIONS=102} [2021-03-26 03:27:33,380 INFO L343 CegarLoopForPetriNet]: 204 programPoint places, 1 predicate places. [2021-03-26 03:27:33,380 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:33,380 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 102 transitions, 456 flow [2021-03-26 03:27:33,381 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 102 transitions, 456 flow [2021-03-26 03:27:33,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 205 places, 102 transitions, 456 flow [2021-03-26 03:27:33,390 INFO L129 PetriNetUnfolder]: 0/102 cut-off events. [2021-03-26 03:27:33,390 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:33,390 INFO L84 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 102 events. 0/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 100 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 0. Up to 51 conditions per place. [2021-03-26 03:27:33,391 INFO L142 LiptonReduction]: Number of co-enabled transitions 5000 [2021-03-26 03:27:33,395 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:27:33,395 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:27:33,395 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15 [2021-03-26 03:27:33,396 INFO L480 AbstractCegarLoop]: Abstraction has has 205 places, 102 transitions, 456 flow [2021-03-26 03:27:33,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 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 03:27:33,397 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:33,397 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:27:33,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-03-26 03:27:33,397 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:33,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:33,397 INFO L82 PathProgramCache]: Analyzing trace with hash 568827443, now seen corresponding path program 1 times [2021-03-26 03:27:33,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:33,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305230916] [2021-03-26 03:27:33,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:33,405 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:33,406 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:33,410 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:27:33,410 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:27:33,411 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-03-26 03:27:33,411 WARN L342 ceAbstractionStarter]: 50 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:27:33,411 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 51 thread instances. [2021-03-26 03:27:33,448 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:27:33,448 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:27:33,448 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:27:33,448 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:27:33,448 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:27:33,449 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:27:33,449 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:27:33,449 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:27:33,449 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:27:33,449 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:27:33,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 261 places, 158 transitions, 3121 flow [2021-03-26 03:27:33,483 INFO L129 PetriNetUnfolder]: 0/311 cut-off events. [2021-03-26 03:27:33,483 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:33,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1791 conditions, 311 events. 0/311 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1045 event pairs, 0 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 0. Up to 52 conditions per place. [2021-03-26 03:27:33,483 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 158 transitions, 3121 flow [2021-03-26 03:27:33,484 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 156 transitions, 3117 flow [2021-03-26 03:27:33,484 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:33,484 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 259 places, 156 transitions, 3117 flow [2021-03-26 03:27:33,485 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 259 places, 156 transitions, 3117 flow [2021-03-26 03:27:33,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 259 places, 156 transitions, 3117 flow [2021-03-26 03:27:33,512 INFO L129 PetriNetUnfolder]: 0/207 cut-off events. [2021-03-26 03:27:33,512 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:33,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1687 conditions, 207 events. 0/207 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 550 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 0. Up to 52 conditions per place. [2021-03-26 03:27:33,521 INFO L142 LiptonReduction]: Number of co-enabled transitions 15708 [2021-03-26 03:27:37,194 INFO L154 LiptonReduction]: Checked pairs total: 6477 [2021-03-26 03:27:37,194 INFO L156 LiptonReduction]: Total number of compositions: 51 [2021-03-26 03:27:37,194 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3710 [2021-03-26 03:27:37,195 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:27:37,196 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:37,196 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:37,196 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:27:37,196 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:37,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:37,196 INFO L82 PathProgramCache]: Analyzing trace with hash 177315, now seen corresponding path program 1 times [2021-03-26 03:27:37,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:37,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865047546] [2021-03-26 03:27:37,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:27:37,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:27:37,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:27:37,206 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 03:27:37,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865047546] [2021-03-26 03:27:37,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:27:37,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:27:37,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118196826] [2021-03-26 03:27:37,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:27:37,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:27:37,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:27:37,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:27:37,207 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 209 [2021-03-26 03:27:37,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 105 transitions, 3015 flow. Second operand has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 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 03:27:37,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:27:37,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 209 [2021-03-26 03:27:37,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:27:37,227 INFO L129 PetriNetUnfolder]: 0/104 cut-off events. [2021-03-26 03:27:37,227 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:37,227 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1586 conditions, 104 events. 0/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 107 event pairs, 0 based on Foata normal form. 52/156 useless extension candidates. Maximal degree in co-relation 0. Up to 52 conditions per place. [2021-03-26 03:27:37,228 INFO L132 encePairwiseOnDemand]: 207/209 looper letters, 0 selfloop transitions, 1 changer transitions 0/104 dead transitions. [2021-03-26 03:27:37,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 104 transitions, 3015 flow [2021-03-26 03:27:37,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:27:37,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:27:37,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 620 transitions. [2021-03-26 03:27:37,228 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.988835725677831 [2021-03-26 03:27:37,228 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 620 transitions. [2021-03-26 03:27:37,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 620 transitions. [2021-03-26 03:27:37,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:27:37,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 620 transitions. [2021-03-26 03:27:37,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 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 03:27:37,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 03:27:37,230 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 03:27:37,230 INFO L185 Difference]: Start difference. First operand has 208 places, 105 transitions, 3015 flow. Second operand 3 states and 620 transitions. [2021-03-26 03:27:37,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 104 transitions, 3015 flow [2021-03-26 03:27:37,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 104 transitions, 465 flow, removed 1275 selfloop flow, removed 0 redundant places. [2021-03-26 03:27:37,263 INFO L241 Difference]: Finished difference. Result has 209 places, 104 transitions, 465 flow [2021-03-26 03:27:37,263 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=465, PETRI_PLACES=209, PETRI_TRANSITIONS=104} [2021-03-26 03:27:37,263 INFO L343 CegarLoopForPetriNet]: 208 programPoint places, 1 predicate places. [2021-03-26 03:27:37,263 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:37,263 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 104 transitions, 465 flow [2021-03-26 03:27:37,264 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 104 transitions, 465 flow [2021-03-26 03:27:37,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 209 places, 104 transitions, 465 flow [2021-03-26 03:27:37,273 INFO L129 PetriNetUnfolder]: 0/104 cut-off events. [2021-03-26 03:27:37,273 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:37,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 104 events. 0/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 107 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 0. Up to 52 conditions per place. [2021-03-26 03:27:37,275 INFO L142 LiptonReduction]: Number of co-enabled transitions 5202 [2021-03-26 03:27:37,279 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:27:37,279 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:27:37,279 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-03-26 03:27:37,280 INFO L480 AbstractCegarLoop]: Abstraction has has 209 places, 104 transitions, 465 flow [2021-03-26 03:27:37,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 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 03:27:37,280 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:37,281 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:27:37,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-03-26 03:27:37,281 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:37,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:37,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1219012916, now seen corresponding path program 1 times [2021-03-26 03:27:37,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:37,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133921075] [2021-03-26 03:27:37,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:37,289 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:37,290 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:37,295 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:27:37,295 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:27:37,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-03-26 03:27:37,295 WARN L342 ceAbstractionStarter]: 51 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:27:37,295 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 52 thread instances. [2021-03-26 03:27:37,334 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:27:37,335 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:27:37,335 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:27:37,335 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:27:37,335 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:27:37,335 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:27:37,335 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:27:37,335 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:27:37,335 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:27:37,335 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:27:37,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 266 places, 161 transitions, 3234 flow [2021-03-26 03:27:37,373 INFO L129 PetriNetUnfolder]: 0/317 cut-off events. [2021-03-26 03:27:37,373 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:37,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1852 conditions, 317 events. 0/317 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1047 event pairs, 0 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 0. Up to 53 conditions per place. [2021-03-26 03:27:37,373 INFO L82 GeneralOperation]: Start removeDead. Operand has 266 places, 161 transitions, 3234 flow [2021-03-26 03:27:37,374 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 264 places, 159 transitions, 3230 flow [2021-03-26 03:27:37,374 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:37,374 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 264 places, 159 transitions, 3230 flow [2021-03-26 03:27:37,375 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 264 places, 159 transitions, 3230 flow [2021-03-26 03:27:37,375 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 264 places, 159 transitions, 3230 flow [2021-03-26 03:27:37,403 INFO L129 PetriNetUnfolder]: 0/211 cut-off events. [2021-03-26 03:27:37,403 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:37,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1746 conditions, 211 events. 0/211 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 628 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 0. Up to 53 conditions per place. [2021-03-26 03:27:37,413 INFO L142 LiptonReduction]: Number of co-enabled transitions 16328 [2021-03-26 03:27:41,097 INFO L154 LiptonReduction]: Checked pairs total: 6734 [2021-03-26 03:27:41,097 INFO L156 LiptonReduction]: Total number of compositions: 52 [2021-03-26 03:27:41,098 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3724 [2021-03-26 03:27:41,099 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:27:41,099 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:41,099 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:41,099 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:27:41,099 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:41,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:41,099 INFO L82 PathProgramCache]: Analyzing trace with hash 184099, now seen corresponding path program 1 times [2021-03-26 03:27:41,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:41,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82077325] [2021-03-26 03:27:41,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:27:41,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:27:41,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:27:41,113 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 03:27:41,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82077325] [2021-03-26 03:27:41,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:27:41,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:27:41,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985187599] [2021-03-26 03:27:41,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:27:41,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:27:41,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:27:41,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:27:41,114 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 213 [2021-03-26 03:27:41,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 107 transitions, 3126 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 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 03:27:41,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:27:41,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 213 [2021-03-26 03:27:41,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:27:41,134 INFO L129 PetriNetUnfolder]: 0/106 cut-off events. [2021-03-26 03:27:41,134 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:41,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1643 conditions, 106 events. 0/106 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 124 event pairs, 0 based on Foata normal form. 53/159 useless extension candidates. Maximal degree in co-relation 0. Up to 53 conditions per place. [2021-03-26 03:27:41,135 INFO L132 encePairwiseOnDemand]: 211/213 looper letters, 0 selfloop transitions, 1 changer transitions 0/106 dead transitions. [2021-03-26 03:27:41,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 106 transitions, 3126 flow [2021-03-26 03:27:41,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:27:41,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:27:41,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 632 transitions. [2021-03-26 03:27:41,135 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9890453834115805 [2021-03-26 03:27:41,135 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 632 transitions. [2021-03-26 03:27:41,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 632 transitions. [2021-03-26 03:27:41,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:27:41,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 632 transitions. [2021-03-26 03:27:41,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 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 03:27:41,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 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 03:27:41,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 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 03:27:41,137 INFO L185 Difference]: Start difference. First operand has 212 places, 107 transitions, 3126 flow. Second operand 3 states and 632 transitions. [2021-03-26 03:27:41,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 106 transitions, 3126 flow [2021-03-26 03:27:41,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 106 transitions, 474 flow, removed 1326 selfloop flow, removed 0 redundant places. [2021-03-26 03:27:41,174 INFO L241 Difference]: Finished difference. Result has 213 places, 106 transitions, 474 flow [2021-03-26 03:27:41,174 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=474, PETRI_PLACES=213, PETRI_TRANSITIONS=106} [2021-03-26 03:27:41,174 INFO L343 CegarLoopForPetriNet]: 212 programPoint places, 1 predicate places. [2021-03-26 03:27:41,174 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:41,174 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 106 transitions, 474 flow [2021-03-26 03:27:41,174 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 106 transitions, 474 flow [2021-03-26 03:27:41,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 213 places, 106 transitions, 474 flow [2021-03-26 03:27:41,184 INFO L129 PetriNetUnfolder]: 0/106 cut-off events. [2021-03-26 03:27:41,184 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:41,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 106 events. 0/106 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 102 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 0. Up to 53 conditions per place. [2021-03-26 03:27:41,186 INFO L142 LiptonReduction]: Number of co-enabled transitions 5408 [2021-03-26 03:27:41,190 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:27:41,190 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:27:41,190 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-03-26 03:27:41,191 INFO L480 AbstractCegarLoop]: Abstraction has has 213 places, 106 transitions, 474 flow [2021-03-26 03:27:41,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 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 03:27:41,192 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:41,192 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:27:41,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-03-26 03:27:41,192 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:41,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:41,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1650121738, now seen corresponding path program 1 times [2021-03-26 03:27:41,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:41,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474386901] [2021-03-26 03:27:41,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:41,200 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:41,202 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:41,206 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:27:41,207 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:27:41,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-03-26 03:27:41,207 WARN L342 ceAbstractionStarter]: 52 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:27:41,207 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 53 thread instances. [2021-03-26 03:27:41,265 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:27:41,266 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:27:41,267 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:27:41,267 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:27:41,267 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:27:41,267 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:27:41,267 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:27:41,267 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:27:41,267 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:27:41,267 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:27:41,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 271 places, 164 transitions, 3349 flow [2021-03-26 03:27:41,304 INFO L129 PetriNetUnfolder]: 0/323 cut-off events. [2021-03-26 03:27:41,304 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:41,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1914 conditions, 323 events. 0/323 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1066 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 0. Up to 54 conditions per place. [2021-03-26 03:27:41,304 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 164 transitions, 3349 flow [2021-03-26 03:27:41,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 162 transitions, 3345 flow [2021-03-26 03:27:41,306 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:41,306 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 162 transitions, 3345 flow [2021-03-26 03:27:41,306 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 162 transitions, 3345 flow [2021-03-26 03:27:41,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 269 places, 162 transitions, 3345 flow [2021-03-26 03:27:41,335 INFO L129 PetriNetUnfolder]: 0/215 cut-off events. [2021-03-26 03:27:41,335 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:41,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1806 conditions, 215 events. 0/215 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 516 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 0. Up to 54 conditions per place. [2021-03-26 03:27:41,345 INFO L142 LiptonReduction]: Number of co-enabled transitions 16960 [2021-03-26 03:27:45,201 INFO L154 LiptonReduction]: Checked pairs total: 6996 [2021-03-26 03:27:45,202 INFO L156 LiptonReduction]: Total number of compositions: 53 [2021-03-26 03:27:45,202 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3897 [2021-03-26 03:27:45,203 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:27:45,203 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:45,203 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:45,203 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:27:45,203 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:45,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:45,203 INFO L82 PathProgramCache]: Analyzing trace with hash 191011, now seen corresponding path program 1 times [2021-03-26 03:27:45,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:45,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426200404] [2021-03-26 03:27:45,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:27:45,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:27:45,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:27:45,214 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 03:27:45,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426200404] [2021-03-26 03:27:45,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:27:45,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:27:45,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428873156] [2021-03-26 03:27:45,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:27:45,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:27:45,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:27:45,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:27:45,215 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 217 [2021-03-26 03:27:45,215 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 109 transitions, 3239 flow. Second operand has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 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 03:27:45,215 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:27:45,215 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 217 [2021-03-26 03:27:45,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:27:45,236 INFO L129 PetriNetUnfolder]: 0/108 cut-off events. [2021-03-26 03:27:45,236 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:45,236 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1701 conditions, 108 events. 0/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 103 event pairs, 0 based on Foata normal form. 54/162 useless extension candidates. Maximal degree in co-relation 0. Up to 54 conditions per place. [2021-03-26 03:27:45,236 INFO L132 encePairwiseOnDemand]: 215/217 looper letters, 0 selfloop transitions, 1 changer transitions 0/108 dead transitions. [2021-03-26 03:27:45,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 108 transitions, 3239 flow [2021-03-26 03:27:45,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:27:45,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:27:45,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 644 transitions. [2021-03-26 03:27:45,237 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.989247311827957 [2021-03-26 03:27:45,237 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 644 transitions. [2021-03-26 03:27:45,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 644 transitions. [2021-03-26 03:27:45,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:27:45,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 644 transitions. [2021-03-26 03:27:45,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 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 03:27:45,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 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 03:27:45,238 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 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 03:27:45,238 INFO L185 Difference]: Start difference. First operand has 216 places, 109 transitions, 3239 flow. Second operand 3 states and 644 transitions. [2021-03-26 03:27:45,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 108 transitions, 3239 flow [2021-03-26 03:27:45,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 108 transitions, 483 flow, removed 1378 selfloop flow, removed 0 redundant places. [2021-03-26 03:27:45,278 INFO L241 Difference]: Finished difference. Result has 217 places, 108 transitions, 483 flow [2021-03-26 03:27:45,278 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=483, PETRI_PLACES=217, PETRI_TRANSITIONS=108} [2021-03-26 03:27:45,278 INFO L343 CegarLoopForPetriNet]: 216 programPoint places, 1 predicate places. [2021-03-26 03:27:45,278 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:45,278 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 108 transitions, 483 flow [2021-03-26 03:27:45,278 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 108 transitions, 483 flow [2021-03-26 03:27:45,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 217 places, 108 transitions, 483 flow [2021-03-26 03:27:45,289 INFO L129 PetriNetUnfolder]: 0/108 cut-off events. [2021-03-26 03:27:45,289 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:45,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 108 events. 0/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 103 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 0. Up to 54 conditions per place. [2021-03-26 03:27:45,290 INFO L142 LiptonReduction]: Number of co-enabled transitions 5618 [2021-03-26 03:27:45,294 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:27:45,294 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:27:45,295 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17 [2021-03-26 03:27:45,296 INFO L480 AbstractCegarLoop]: Abstraction has has 217 places, 108 transitions, 483 flow [2021-03-26 03:27:45,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 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 03:27:45,296 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:45,296 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:27:45,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-03-26 03:27:45,296 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:45,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:45,297 INFO L82 PathProgramCache]: Analyzing trace with hash 292165271, now seen corresponding path program 1 times [2021-03-26 03:27:45,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:45,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632504067] [2021-03-26 03:27:45,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:45,305 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:45,307 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:45,312 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:27:45,312 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:27:45,312 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-03-26 03:27:45,312 WARN L342 ceAbstractionStarter]: 53 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:27:45,312 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 54 thread instances. [2021-03-26 03:27:45,349 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:27:45,350 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:27:45,350 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:27:45,350 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:27:45,350 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:27:45,350 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:27:45,350 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:27:45,350 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:27:45,350 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:27:45,350 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:27:45,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 276 places, 167 transitions, 3466 flow [2021-03-26 03:27:45,389 INFO L129 PetriNetUnfolder]: 0/329 cut-off events. [2021-03-26 03:27:45,389 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:45,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1977 conditions, 329 events. 0/329 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1063 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 0. Up to 55 conditions per place. [2021-03-26 03:27:45,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 276 places, 167 transitions, 3466 flow [2021-03-26 03:27:45,390 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 274 places, 165 transitions, 3462 flow [2021-03-26 03:27:45,390 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:45,391 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 274 places, 165 transitions, 3462 flow [2021-03-26 03:27:45,391 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 274 places, 165 transitions, 3462 flow [2021-03-26 03:27:45,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 274 places, 165 transitions, 3462 flow [2021-03-26 03:27:45,422 INFO L129 PetriNetUnfolder]: 0/219 cut-off events. [2021-03-26 03:27:45,422 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:45,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1867 conditions, 219 events. 0/219 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 692 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 0. Up to 55 conditions per place. [2021-03-26 03:27:45,433 INFO L142 LiptonReduction]: Number of co-enabled transitions 17604 [2021-03-26 03:27:49,490 INFO L154 LiptonReduction]: Checked pairs total: 7263 [2021-03-26 03:27:49,490 INFO L156 LiptonReduction]: Total number of compositions: 54 [2021-03-26 03:27:49,490 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4100 [2021-03-26 03:27:49,492 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:27:49,492 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:49,492 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:49,492 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:27:49,492 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:49,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:49,492 INFO L82 PathProgramCache]: Analyzing trace with hash 198051, now seen corresponding path program 1 times [2021-03-26 03:27:49,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:49,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957423409] [2021-03-26 03:27:49,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:27:49,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:27:49,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:27:49,506 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 03:27:49,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957423409] [2021-03-26 03:27:49,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:27:49,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:27:49,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234047358] [2021-03-26 03:27:49,507 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:27:49,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:27:49,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:27:49,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:27:49,507 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 221 [2021-03-26 03:27:49,508 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 111 transitions, 3354 flow. Second operand has 3 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 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 03:27:49,508 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:27:49,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 221 [2021-03-26 03:27:49,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:27:49,533 INFO L129 PetriNetUnfolder]: 0/110 cut-off events. [2021-03-26 03:27:49,533 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:49,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1760 conditions, 110 events. 0/110 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 108 event pairs, 0 based on Foata normal form. 55/165 useless extension candidates. Maximal degree in co-relation 0. Up to 55 conditions per place. [2021-03-26 03:27:49,533 INFO L132 encePairwiseOnDemand]: 219/221 looper letters, 0 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2021-03-26 03:27:49,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 110 transitions, 3354 flow [2021-03-26 03:27:49,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:27:49,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:27:49,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 656 transitions. [2021-03-26 03:27:49,534 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9894419306184012 [2021-03-26 03:27:49,534 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 656 transitions. [2021-03-26 03:27:49,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 656 transitions. [2021-03-26 03:27:49,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:27:49,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 656 transitions. [2021-03-26 03:27:49,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 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 03:27:49,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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 03:27:49,535 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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 03:27:49,535 INFO L185 Difference]: Start difference. First operand has 220 places, 111 transitions, 3354 flow. Second operand 3 states and 656 transitions. [2021-03-26 03:27:49,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 110 transitions, 3354 flow [2021-03-26 03:27:49,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 110 transitions, 492 flow, removed 1431 selfloop flow, removed 0 redundant places. [2021-03-26 03:27:49,581 INFO L241 Difference]: Finished difference. Result has 221 places, 110 transitions, 492 flow [2021-03-26 03:27:49,581 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=221, PETRI_TRANSITIONS=110} [2021-03-26 03:27:49,581 INFO L343 CegarLoopForPetriNet]: 220 programPoint places, 1 predicate places. [2021-03-26 03:27:49,581 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:49,581 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 221 places, 110 transitions, 492 flow [2021-03-26 03:27:49,582 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 221 places, 110 transitions, 492 flow [2021-03-26 03:27:49,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 221 places, 110 transitions, 492 flow [2021-03-26 03:27:49,594 INFO L129 PetriNetUnfolder]: 0/110 cut-off events. [2021-03-26 03:27:49,594 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:49,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 110 events. 0/110 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 102 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 0. Up to 55 conditions per place. [2021-03-26 03:27:49,597 INFO L142 LiptonReduction]: Number of co-enabled transitions 5832 [2021-03-26 03:27:49,601 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:27:49,601 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:27:49,601 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20 [2021-03-26 03:27:49,602 INFO L480 AbstractCegarLoop]: Abstraction has has 221 places, 110 transitions, 492 flow [2021-03-26 03:27:49,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 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 03:27:49,603 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:49,603 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:27:49,603 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-03-26 03:27:49,603 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:49,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:49,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1780032071, now seen corresponding path program 1 times [2021-03-26 03:27:49,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:49,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996907161] [2021-03-26 03:27:49,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:49,612 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:49,614 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:49,620 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:27:49,620 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:27:49,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-03-26 03:27:49,620 WARN L342 ceAbstractionStarter]: 54 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:27:49,620 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 55 thread instances. [2021-03-26 03:27:49,674 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:27:49,674 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:27:49,675 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:27:49,675 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:27:49,675 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:27:49,675 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:27:49,675 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:27:49,675 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:27:49,675 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:27:49,675 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:27:49,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 281 places, 170 transitions, 3585 flow [2021-03-26 03:27:49,722 INFO L129 PetriNetUnfolder]: 0/335 cut-off events. [2021-03-26 03:27:49,722 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:49,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2041 conditions, 335 events. 0/335 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1101 event pairs, 0 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 0. Up to 56 conditions per place. [2021-03-26 03:27:49,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 281 places, 170 transitions, 3585 flow [2021-03-26 03:27:49,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 279 places, 168 transitions, 3581 flow [2021-03-26 03:27:49,723 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:49,724 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 279 places, 168 transitions, 3581 flow [2021-03-26 03:27:49,724 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 279 places, 168 transitions, 3581 flow [2021-03-26 03:27:49,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 279 places, 168 transitions, 3581 flow [2021-03-26 03:27:49,761 INFO L129 PetriNetUnfolder]: 0/223 cut-off events. [2021-03-26 03:27:49,761 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:49,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1929 conditions, 223 events. 0/223 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 625 event pairs, 0 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 0. Up to 56 conditions per place. [2021-03-26 03:27:49,776 INFO L142 LiptonReduction]: Number of co-enabled transitions 18260 [2021-03-26 03:27:53,834 INFO L154 LiptonReduction]: Checked pairs total: 7535 [2021-03-26 03:27:53,835 INFO L156 LiptonReduction]: Total number of compositions: 55 [2021-03-26 03:27:53,835 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4112 [2021-03-26 03:27:53,836 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:27:53,836 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:53,836 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:53,836 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:27:53,836 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:53,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:53,836 INFO L82 PathProgramCache]: Analyzing trace with hash 205219, now seen corresponding path program 1 times [2021-03-26 03:27:53,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:53,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42908168] [2021-03-26 03:27:53,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:27:53,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:27:53,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:27:53,849 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 03:27:53,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42908168] [2021-03-26 03:27:53,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:27:53,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:27:53,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634190253] [2021-03-26 03:27:53,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:27:53,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:27:53,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:27:53,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:27:53,850 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 225 [2021-03-26 03:27:53,850 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 113 transitions, 3471 flow. Second operand has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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 03:27:53,850 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:27:53,850 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 225 [2021-03-26 03:27:53,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:27:53,873 INFO L129 PetriNetUnfolder]: 0/112 cut-off events. [2021-03-26 03:27:53,874 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:53,874 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1820 conditions, 112 events. 0/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 105 event pairs, 0 based on Foata normal form. 56/168 useless extension candidates. Maximal degree in co-relation 0. Up to 56 conditions per place. [2021-03-26 03:27:53,874 INFO L132 encePairwiseOnDemand]: 223/225 looper letters, 0 selfloop transitions, 1 changer transitions 0/112 dead transitions. [2021-03-26 03:27:53,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 112 transitions, 3471 flow [2021-03-26 03:27:53,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:27:53,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:27:53,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 668 transitions. [2021-03-26 03:27:53,874 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9896296296296296 [2021-03-26 03:27:53,875 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 668 transitions. [2021-03-26 03:27:53,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 668 transitions. [2021-03-26 03:27:53,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:27:53,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 668 transitions. [2021-03-26 03:27:53,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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 03:27:53,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 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 03:27:53,876 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 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 03:27:53,876 INFO L185 Difference]: Start difference. First operand has 224 places, 113 transitions, 3471 flow. Second operand 3 states and 668 transitions. [2021-03-26 03:27:53,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 112 transitions, 3471 flow [2021-03-26 03:27:53,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 112 transitions, 501 flow, removed 1485 selfloop flow, removed 0 redundant places. [2021-03-26 03:27:53,919 INFO L241 Difference]: Finished difference. Result has 225 places, 112 transitions, 501 flow [2021-03-26 03:27:53,919 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=501, PETRI_PLACES=225, PETRI_TRANSITIONS=112} [2021-03-26 03:27:53,919 INFO L343 CegarLoopForPetriNet]: 224 programPoint places, 1 predicate places. [2021-03-26 03:27:53,919 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:53,919 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 225 places, 112 transitions, 501 flow [2021-03-26 03:27:53,919 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 225 places, 112 transitions, 501 flow [2021-03-26 03:27:53,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 225 places, 112 transitions, 501 flow [2021-03-26 03:27:53,930 INFO L129 PetriNetUnfolder]: 0/112 cut-off events. [2021-03-26 03:27:53,931 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:53,931 INFO L84 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 112 events. 0/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 101 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 0. Up to 56 conditions per place. [2021-03-26 03:27:53,932 INFO L142 LiptonReduction]: Number of co-enabled transitions 6050 [2021-03-26 03:27:53,937 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:27:53,937 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:27:53,937 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18 [2021-03-26 03:27:53,939 INFO L480 AbstractCegarLoop]: Abstraction has has 225 places, 112 transitions, 501 flow [2021-03-26 03:27:54,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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 03:27:54,043 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:54,043 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:27:54,044 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-03-26 03:27:54,044 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:54,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:54,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1407430542, now seen corresponding path program 1 times [2021-03-26 03:27:54,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:54,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211249687] [2021-03-26 03:27:54,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:54,053 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:54,055 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:54,067 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:27:54,068 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:27:54,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-03-26 03:27:54,068 WARN L342 ceAbstractionStarter]: 55 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:27:54,068 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 56 thread instances. [2021-03-26 03:27:54,112 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:27:54,112 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:27:54,112 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:27:54,112 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:27:54,112 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:27:54,112 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:27:54,112 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:27:54,113 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:27:54,113 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:27:54,113 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:27:54,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 286 places, 173 transitions, 3706 flow [2021-03-26 03:27:54,155 INFO L129 PetriNetUnfolder]: 0/341 cut-off events. [2021-03-26 03:27:54,155 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:54,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2106 conditions, 341 events. 0/341 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1102 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 0. Up to 57 conditions per place. [2021-03-26 03:27:54,155 INFO L82 GeneralOperation]: Start removeDead. Operand has 286 places, 173 transitions, 3706 flow [2021-03-26 03:27:54,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 284 places, 171 transitions, 3702 flow [2021-03-26 03:27:54,157 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:54,157 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 284 places, 171 transitions, 3702 flow [2021-03-26 03:27:54,157 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 284 places, 171 transitions, 3702 flow [2021-03-26 03:27:54,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 284 places, 171 transitions, 3702 flow [2021-03-26 03:27:54,191 INFO L129 PetriNetUnfolder]: 0/227 cut-off events. [2021-03-26 03:27:54,191 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:54,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1992 conditions, 227 events. 0/227 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 606 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 0. Up to 57 conditions per place. [2021-03-26 03:27:54,203 INFO L142 LiptonReduction]: Number of co-enabled transitions 18928 [2021-03-26 03:27:58,483 INFO L154 LiptonReduction]: Checked pairs total: 7812 [2021-03-26 03:27:58,483 INFO L156 LiptonReduction]: Total number of compositions: 56 [2021-03-26 03:27:58,484 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4327 [2021-03-26 03:27:58,485 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:27:58,485 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:58,485 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:58,485 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:27:58,485 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:58,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:58,485 INFO L82 PathProgramCache]: Analyzing trace with hash 212515, now seen corresponding path program 1 times [2021-03-26 03:27:58,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:58,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905773275] [2021-03-26 03:27:58,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:27:58,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:27:58,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:27:58,498 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 03:27:58,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905773275] [2021-03-26 03:27:58,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:27:58,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:27:58,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317050608] [2021-03-26 03:27:58,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:27:58,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:27:58,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:27:58,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:27:58,499 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 229 [2021-03-26 03:27:58,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 115 transitions, 3590 flow. Second operand has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 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 03:27:58,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:27:58,499 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 229 [2021-03-26 03:27:58,499 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:27:58,524 INFO L129 PetriNetUnfolder]: 0/114 cut-off events. [2021-03-26 03:27:58,524 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:58,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1881 conditions, 114 events. 0/114 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 104 event pairs, 0 based on Foata normal form. 57/171 useless extension candidates. Maximal degree in co-relation 0. Up to 57 conditions per place. [2021-03-26 03:27:58,524 INFO L132 encePairwiseOnDemand]: 227/229 looper letters, 0 selfloop transitions, 1 changer transitions 0/114 dead transitions. [2021-03-26 03:27:58,524 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 114 transitions, 3590 flow [2021-03-26 03:27:58,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:27:58,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:27:58,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 680 transitions. [2021-03-26 03:27:58,525 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9898107714701602 [2021-03-26 03:27:58,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 680 transitions. [2021-03-26 03:27:58,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 680 transitions. [2021-03-26 03:27:58,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:27:58,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 680 transitions. [2021-03-26 03:27:58,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 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 03:27:58,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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 03:27:58,526 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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 03:27:58,526 INFO L185 Difference]: Start difference. First operand has 228 places, 115 transitions, 3590 flow. Second operand 3 states and 680 transitions. [2021-03-26 03:27:58,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 114 transitions, 3590 flow [2021-03-26 03:27:58,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 114 transitions, 510 flow, removed 1540 selfloop flow, removed 0 redundant places. [2021-03-26 03:27:58,573 INFO L241 Difference]: Finished difference. Result has 229 places, 114 transitions, 510 flow [2021-03-26 03:27:58,573 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=510, PETRI_PLACES=229, PETRI_TRANSITIONS=114} [2021-03-26 03:27:58,573 INFO L343 CegarLoopForPetriNet]: 228 programPoint places, 1 predicate places. [2021-03-26 03:27:58,573 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:58,573 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 229 places, 114 transitions, 510 flow [2021-03-26 03:27:58,573 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 229 places, 114 transitions, 510 flow [2021-03-26 03:27:58,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 229 places, 114 transitions, 510 flow [2021-03-26 03:27:58,585 INFO L129 PetriNetUnfolder]: 0/114 cut-off events. [2021-03-26 03:27:58,585 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:58,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 114 events. 0/114 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 112 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 0. Up to 57 conditions per place. [2021-03-26 03:27:58,586 INFO L142 LiptonReduction]: Number of co-enabled transitions 6272 [2021-03-26 03:27:58,591 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:27:58,591 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:27:58,591 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18 [2021-03-26 03:27:58,593 INFO L480 AbstractCegarLoop]: Abstraction has has 229 places, 114 transitions, 510 flow [2021-03-26 03:27:58,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 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 03:27:58,593 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:27:58,593 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:27:58,594 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-03-26 03:27:58,594 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:27:58,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:27:58,594 INFO L82 PathProgramCache]: Analyzing trace with hash -396701316, now seen corresponding path program 1 times [2021-03-26 03:27:58,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:27:58,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293880197] [2021-03-26 03:27:58,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:27:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:58,603 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:27:58,605 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:27:58,611 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:27:58,611 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:27:58,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-03-26 03:27:58,611 WARN L342 ceAbstractionStarter]: 56 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:27:58,611 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 57 thread instances. [2021-03-26 03:27:58,660 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:27:58,661 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:27:58,661 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:27:58,661 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:27:58,661 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:27:58,661 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:27:58,661 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:27:58,661 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:27:58,661 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:27:58,661 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:27:58,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 291 places, 176 transitions, 3829 flow [2021-03-26 03:27:58,705 INFO L129 PetriNetUnfolder]: 0/347 cut-off events. [2021-03-26 03:27:58,705 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:58,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2172 conditions, 347 events. 0/347 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1100 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 0. Up to 58 conditions per place. [2021-03-26 03:27:58,705 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 176 transitions, 3829 flow [2021-03-26 03:27:58,707 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 289 places, 174 transitions, 3825 flow [2021-03-26 03:27:58,707 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:27:58,707 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 289 places, 174 transitions, 3825 flow [2021-03-26 03:27:58,707 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 289 places, 174 transitions, 3825 flow [2021-03-26 03:27:58,708 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 289 places, 174 transitions, 3825 flow [2021-03-26 03:27:58,742 INFO L129 PetriNetUnfolder]: 0/231 cut-off events. [2021-03-26 03:27:58,742 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:27:58,743 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2056 conditions, 231 events. 0/231 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 676 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 0. Up to 58 conditions per place. [2021-03-26 03:27:58,755 INFO L142 LiptonReduction]: Number of co-enabled transitions 19608 [2021-03-26 03:28:03,268 INFO L154 LiptonReduction]: Checked pairs total: 8094 [2021-03-26 03:28:03,268 INFO L156 LiptonReduction]: Total number of compositions: 57 [2021-03-26 03:28:03,268 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4561 [2021-03-26 03:28:03,269 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:28:03,269 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:03,269 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:28:03,269 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:28:03,270 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:28:03,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:28:03,270 INFO L82 PathProgramCache]: Analyzing trace with hash 219939, now seen corresponding path program 1 times [2021-03-26 03:28:03,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:28:03,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625346981] [2021-03-26 03:28:03,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:28:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:28:03,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:28:03,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:28:03,284 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 03:28:03,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625346981] [2021-03-26 03:28:03,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:28:03,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:28:03,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032578864] [2021-03-26 03:28:03,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:28:03,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:28:03,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:28:03,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:28:03,285 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 233 [2021-03-26 03:28:03,285 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 117 transitions, 3711 flow. Second operand has 3 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 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 03:28:03,285 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:28:03,285 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 233 [2021-03-26 03:28:03,285 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:28:03,309 INFO L129 PetriNetUnfolder]: 0/116 cut-off events. [2021-03-26 03:28:03,309 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:03,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1943 conditions, 116 events. 0/116 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 111 event pairs, 0 based on Foata normal form. 58/174 useless extension candidates. Maximal degree in co-relation 0. Up to 58 conditions per place. [2021-03-26 03:28:03,310 INFO L132 encePairwiseOnDemand]: 231/233 looper letters, 0 selfloop transitions, 1 changer transitions 0/116 dead transitions. [2021-03-26 03:28:03,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 116 transitions, 3711 flow [2021-03-26 03:28:03,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:28:03,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:28:03,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 692 transitions. [2021-03-26 03:28:03,310 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9899856938483548 [2021-03-26 03:28:03,310 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 692 transitions. [2021-03-26 03:28:03,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 692 transitions. [2021-03-26 03:28:03,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:28:03,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 692 transitions. [2021-03-26 03:28:03,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 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 03:28:03,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 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 03:28:03,312 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 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 03:28:03,312 INFO L185 Difference]: Start difference. First operand has 232 places, 117 transitions, 3711 flow. Second operand 3 states and 692 transitions. [2021-03-26 03:28:03,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 116 transitions, 3711 flow [2021-03-26 03:28:03,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 116 transitions, 519 flow, removed 1596 selfloop flow, removed 0 redundant places. [2021-03-26 03:28:03,360 INFO L241 Difference]: Finished difference. Result has 233 places, 116 transitions, 519 flow [2021-03-26 03:28:03,360 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=519, PETRI_PLACES=233, PETRI_TRANSITIONS=116} [2021-03-26 03:28:03,360 INFO L343 CegarLoopForPetriNet]: 232 programPoint places, 1 predicate places. [2021-03-26 03:28:03,360 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:28:03,360 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 233 places, 116 transitions, 519 flow [2021-03-26 03:28:03,360 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 233 places, 116 transitions, 519 flow [2021-03-26 03:28:03,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 233 places, 116 transitions, 519 flow [2021-03-26 03:28:03,371 INFO L129 PetriNetUnfolder]: 0/116 cut-off events. [2021-03-26 03:28:03,372 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:03,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 116 events. 0/116 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 115 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 0. Up to 58 conditions per place. [2021-03-26 03:28:03,373 INFO L142 LiptonReduction]: Number of co-enabled transitions 6498 [2021-03-26 03:28:03,378 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:28:03,378 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:28:03,378 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18 [2021-03-26 03:28:03,380 INFO L480 AbstractCegarLoop]: Abstraction has has 233 places, 116 transitions, 519 flow [2021-03-26 03:28:03,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 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 03:28:03,380 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:28:03,380 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:28:03,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-03-26 03:28:03,381 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:28:03,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:28:03,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1672576605, now seen corresponding path program 1 times [2021-03-26 03:28:03,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:28:03,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136912662] [2021-03-26 03:28:03,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:28:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:28:03,390 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:28:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:28:03,392 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:28:03,398 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:28:03,398 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:28:03,398 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-03-26 03:28:03,398 WARN L342 ceAbstractionStarter]: 57 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:28:03,398 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 58 thread instances. [2021-03-26 03:28:03,443 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:28:03,443 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:28:03,444 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:28:03,444 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:28:03,444 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:28:03,444 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:28:03,444 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:28:03,444 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:28:03,444 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:28:03,444 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:28:03,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 296 places, 179 transitions, 3954 flow [2021-03-26 03:28:03,490 INFO L129 PetriNetUnfolder]: 0/353 cut-off events. [2021-03-26 03:28:03,490 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:03,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2239 conditions, 353 events. 0/353 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1158 event pairs, 0 based on Foata normal form. 0/294 useless extension candidates. Maximal degree in co-relation 0. Up to 59 conditions per place. [2021-03-26 03:28:03,490 INFO L82 GeneralOperation]: Start removeDead. Operand has 296 places, 179 transitions, 3954 flow [2021-03-26 03:28:03,491 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 294 places, 177 transitions, 3950 flow [2021-03-26 03:28:03,491 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:28:03,491 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 294 places, 177 transitions, 3950 flow [2021-03-26 03:28:03,492 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 294 places, 177 transitions, 3950 flow [2021-03-26 03:28:03,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 294 places, 177 transitions, 3950 flow [2021-03-26 03:28:03,528 INFO L129 PetriNetUnfolder]: 0/235 cut-off events. [2021-03-26 03:28:03,528 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:03,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2121 conditions, 235 events. 0/235 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 636 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 0. Up to 59 conditions per place. [2021-03-26 03:28:03,541 INFO L142 LiptonReduction]: Number of co-enabled transitions 20300 [2021-03-26 03:28:08,291 INFO L154 LiptonReduction]: Checked pairs total: 8381 [2021-03-26 03:28:08,292 INFO L156 LiptonReduction]: Total number of compositions: 58 [2021-03-26 03:28:08,292 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4801 [2021-03-26 03:28:08,293 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:28:08,293 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:08,293 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:28:08,293 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:28:08,294 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:28:08,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:28:08,294 INFO L82 PathProgramCache]: Analyzing trace with hash 227491, now seen corresponding path program 1 times [2021-03-26 03:28:08,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:28:08,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293810284] [2021-03-26 03:28:08,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:28:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:28:08,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:28:08,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:28:08,307 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 03:28:08,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293810284] [2021-03-26 03:28:08,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:28:08,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:28:08,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910976750] [2021-03-26 03:28:08,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:28:08,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:28:08,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:28:08,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:28:08,308 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 237 [2021-03-26 03:28:08,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 119 transitions, 3834 flow. Second operand has 3 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 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 03:28:08,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:28:08,308 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 237 [2021-03-26 03:28:08,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:28:08,334 INFO L129 PetriNetUnfolder]: 0/118 cut-off events. [2021-03-26 03:28:08,334 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:08,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2006 conditions, 118 events. 0/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 100 event pairs, 0 based on Foata normal form. 59/177 useless extension candidates. Maximal degree in co-relation 0. Up to 59 conditions per place. [2021-03-26 03:28:08,334 INFO L132 encePairwiseOnDemand]: 235/237 looper letters, 0 selfloop transitions, 1 changer transitions 0/118 dead transitions. [2021-03-26 03:28:08,334 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 118 transitions, 3834 flow [2021-03-26 03:28:08,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:28:08,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:28:08,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 704 transitions. [2021-03-26 03:28:08,335 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9901547116736991 [2021-03-26 03:28:08,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 704 transitions. [2021-03-26 03:28:08,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 704 transitions. [2021-03-26 03:28:08,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:28:08,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 704 transitions. [2021-03-26 03:28:08,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 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 03:28:08,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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 03:28:08,336 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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 03:28:08,336 INFO L185 Difference]: Start difference. First operand has 236 places, 119 transitions, 3834 flow. Second operand 3 states and 704 transitions. [2021-03-26 03:28:08,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 118 transitions, 3834 flow [2021-03-26 03:28:08,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 118 transitions, 528 flow, removed 1653 selfloop flow, removed 0 redundant places. [2021-03-26 03:28:08,388 INFO L241 Difference]: Finished difference. Result has 237 places, 118 transitions, 528 flow [2021-03-26 03:28:08,389 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=528, PETRI_PLACES=237, PETRI_TRANSITIONS=118} [2021-03-26 03:28:08,389 INFO L343 CegarLoopForPetriNet]: 236 programPoint places, 1 predicate places. [2021-03-26 03:28:08,389 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:28:08,389 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 118 transitions, 528 flow [2021-03-26 03:28:08,389 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 118 transitions, 528 flow [2021-03-26 03:28:08,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 237 places, 118 transitions, 528 flow [2021-03-26 03:28:08,401 INFO L129 PetriNetUnfolder]: 0/118 cut-off events. [2021-03-26 03:28:08,401 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:08,401 INFO L84 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 118 events. 0/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 112 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 0. Up to 59 conditions per place. [2021-03-26 03:28:08,403 INFO L142 LiptonReduction]: Number of co-enabled transitions 6728 [2021-03-26 03:28:08,408 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:28:08,408 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:28:08,408 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 19 [2021-03-26 03:28:08,410 INFO L480 AbstractCegarLoop]: Abstraction has has 237 places, 118 transitions, 528 flow [2021-03-26 03:28:08,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 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 03:28:08,410 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:28:08,410 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:28:08,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-03-26 03:28:08,411 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:28:08,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:28:08,411 INFO L82 PathProgramCache]: Analyzing trace with hash 874251583, now seen corresponding path program 1 times [2021-03-26 03:28:08,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:28:08,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943384311] [2021-03-26 03:28:08,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:28:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:28:08,421 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:28:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:28:08,422 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:28:08,428 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:28:08,429 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:28:08,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-03-26 03:28:08,429 WARN L342 ceAbstractionStarter]: 58 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:28:08,429 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 59 thread instances. [2021-03-26 03:28:08,473 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:28:08,473 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:28:08,473 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:28:08,473 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:28:08,473 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:28:08,473 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:28:08,474 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:28:08,474 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:28:08,474 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:28:08,474 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:28:08,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 301 places, 182 transitions, 4081 flow [2021-03-26 03:28:08,521 INFO L129 PetriNetUnfolder]: 0/359 cut-off events. [2021-03-26 03:28:08,521 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:08,521 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2307 conditions, 359 events. 0/359 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1189 event pairs, 0 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 0. Up to 60 conditions per place. [2021-03-26 03:28:08,521 INFO L82 GeneralOperation]: Start removeDead. Operand has 301 places, 182 transitions, 4081 flow [2021-03-26 03:28:08,523 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 299 places, 180 transitions, 4077 flow [2021-03-26 03:28:08,523 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:28:08,523 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 299 places, 180 transitions, 4077 flow [2021-03-26 03:28:08,523 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 299 places, 180 transitions, 4077 flow [2021-03-26 03:28:08,524 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 299 places, 180 transitions, 4077 flow [2021-03-26 03:28:08,561 INFO L129 PetriNetUnfolder]: 0/239 cut-off events. [2021-03-26 03:28:08,561 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:08,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2187 conditions, 239 events. 0/239 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 719 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 0. Up to 60 conditions per place. [2021-03-26 03:28:08,575 INFO L142 LiptonReduction]: Number of co-enabled transitions 21004 [2021-03-26 03:28:13,419 INFO L154 LiptonReduction]: Checked pairs total: 8673 [2021-03-26 03:28:13,419 INFO L156 LiptonReduction]: Total number of compositions: 59 [2021-03-26 03:28:13,419 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4896 [2021-03-26 03:28:13,421 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:28:13,421 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:13,421 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:28:13,421 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:28:13,421 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:28:13,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:28:13,421 INFO L82 PathProgramCache]: Analyzing trace with hash 235171, now seen corresponding path program 1 times [2021-03-26 03:28:13,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:28:13,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296737986] [2021-03-26 03:28:13,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:28:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:28:13,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:28:13,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:28:13,434 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 03:28:13,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296737986] [2021-03-26 03:28:13,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:28:13,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:28:13,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897018221] [2021-03-26 03:28:13,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:28:13,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:28:13,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:28:13,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:28:13,435 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 241 [2021-03-26 03:28:13,435 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 121 transitions, 3959 flow. Second operand has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 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 03:28:13,435 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:28:13,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 241 [2021-03-26 03:28:13,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:28:13,461 INFO L129 PetriNetUnfolder]: 0/120 cut-off events. [2021-03-26 03:28:13,461 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:13,461 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2070 conditions, 120 events. 0/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 111 event pairs, 0 based on Foata normal form. 60/180 useless extension candidates. Maximal degree in co-relation 0. Up to 60 conditions per place. [2021-03-26 03:28:13,462 INFO L132 encePairwiseOnDemand]: 239/241 looper letters, 0 selfloop transitions, 1 changer transitions 0/120 dead transitions. [2021-03-26 03:28:13,462 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 120 transitions, 3959 flow [2021-03-26 03:28:13,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:28:13,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:28:13,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 716 transitions. [2021-03-26 03:28:13,462 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9903181189488244 [2021-03-26 03:28:13,462 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 716 transitions. [2021-03-26 03:28:13,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 716 transitions. [2021-03-26 03:28:13,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:28:13,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 716 transitions. [2021-03-26 03:28:13,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 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 03:28:13,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 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 03:28:13,463 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 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 03:28:13,464 INFO L185 Difference]: Start difference. First operand has 240 places, 121 transitions, 3959 flow. Second operand 3 states and 716 transitions. [2021-03-26 03:28:13,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 120 transitions, 3959 flow [2021-03-26 03:28:13,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 120 transitions, 537 flow, removed 1711 selfloop flow, removed 0 redundant places. [2021-03-26 03:28:13,517 INFO L241 Difference]: Finished difference. Result has 241 places, 120 transitions, 537 flow [2021-03-26 03:28:13,518 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=537, PETRI_PLACES=241, PETRI_TRANSITIONS=120} [2021-03-26 03:28:13,518 INFO L343 CegarLoopForPetriNet]: 240 programPoint places, 1 predicate places. [2021-03-26 03:28:13,518 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:28:13,518 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 120 transitions, 537 flow [2021-03-26 03:28:13,518 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 120 transitions, 537 flow [2021-03-26 03:28:13,518 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 241 places, 120 transitions, 537 flow [2021-03-26 03:28:13,530 INFO L129 PetriNetUnfolder]: 0/120 cut-off events. [2021-03-26 03:28:13,530 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:13,530 INFO L84 FinitePrefix]: Finished finitePrefix Result has 359 conditions, 120 events. 0/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 119 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 0. Up to 60 conditions per place. [2021-03-26 03:28:13,532 INFO L142 LiptonReduction]: Number of co-enabled transitions 6962 [2021-03-26 03:28:13,537 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:28:13,537 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:28:13,537 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 19 [2021-03-26 03:28:13,539 INFO L480 AbstractCegarLoop]: Abstraction has has 241 places, 120 transitions, 537 flow [2021-03-26 03:28:13,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 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 03:28:13,539 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:28:13,539 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:28:13,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-03-26 03:28:13,539 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:28:13,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:28:13,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1755309480, now seen corresponding path program 1 times [2021-03-26 03:28:13,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:28:13,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356272905] [2021-03-26 03:28:13,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:28:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:28:13,549 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:28:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:28:13,551 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:28:13,557 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:28:13,557 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:28:13,557 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-03-26 03:28:13,557 WARN L342 ceAbstractionStarter]: 59 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:28:13,557 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 60 thread instances. [2021-03-26 03:28:13,602 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:28:13,603 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:28:13,603 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:28:13,603 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:28:13,603 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:28:13,603 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:28:13,603 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:28:13,603 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:28:13,603 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:28:13,603 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:28:13,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 306 places, 185 transitions, 4210 flow [2021-03-26 03:28:13,651 INFO L129 PetriNetUnfolder]: 0/365 cut-off events. [2021-03-26 03:28:13,651 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:13,651 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2376 conditions, 365 events. 0/365 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1233 event pairs, 0 based on Foata normal form. 0/304 useless extension candidates. Maximal degree in co-relation 0. Up to 61 conditions per place. [2021-03-26 03:28:13,651 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 185 transitions, 4210 flow [2021-03-26 03:28:13,653 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 304 places, 183 transitions, 4206 flow [2021-03-26 03:28:13,653 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:28:13,653 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 304 places, 183 transitions, 4206 flow [2021-03-26 03:28:13,653 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 304 places, 183 transitions, 4206 flow [2021-03-26 03:28:13,654 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 304 places, 183 transitions, 4206 flow [2021-03-26 03:28:13,692 INFO L129 PetriNetUnfolder]: 0/243 cut-off events. [2021-03-26 03:28:13,692 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:13,692 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2254 conditions, 243 events. 0/243 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 690 event pairs, 0 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 0. Up to 61 conditions per place. [2021-03-26 03:28:13,706 INFO L142 LiptonReduction]: Number of co-enabled transitions 21720 [2021-03-26 03:28:18,825 INFO L154 LiptonReduction]: Checked pairs total: 8970 [2021-03-26 03:28:18,825 INFO L156 LiptonReduction]: Total number of compositions: 60 [2021-03-26 03:28:18,825 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5172 [2021-03-26 03:28:18,827 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:28:18,827 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:18,827 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:28:18,827 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:28:18,827 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:28:18,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:28:18,827 INFO L82 PathProgramCache]: Analyzing trace with hash 242979, now seen corresponding path program 1 times [2021-03-26 03:28:18,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:28:18,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509870008] [2021-03-26 03:28:18,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:28:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:28:18,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:28:18,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:28:18,840 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 03:28:18,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509870008] [2021-03-26 03:28:18,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:28:18,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:28:18,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897989874] [2021-03-26 03:28:18,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:28:18,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:28:18,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:28:18,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:28:18,841 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 245 [2021-03-26 03:28:18,842 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 123 transitions, 4086 flow. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 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 03:28:18,842 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:28:18,842 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 245 [2021-03-26 03:28:18,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:28:18,869 INFO L129 PetriNetUnfolder]: 0/122 cut-off events. [2021-03-26 03:28:18,869 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:18,869 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2135 conditions, 122 events. 0/122 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 118 event pairs, 0 based on Foata normal form. 61/183 useless extension candidates. Maximal degree in co-relation 0. Up to 61 conditions per place. [2021-03-26 03:28:18,869 INFO L132 encePairwiseOnDemand]: 243/245 looper letters, 0 selfloop transitions, 1 changer transitions 0/122 dead transitions. [2021-03-26 03:28:18,870 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 122 transitions, 4086 flow [2021-03-26 03:28:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:28:18,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:28:18,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 728 transitions. [2021-03-26 03:28:18,870 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9904761904761905 [2021-03-26 03:28:18,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 728 transitions. [2021-03-26 03:28:18,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 728 transitions. [2021-03-26 03:28:18,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:28:18,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 728 transitions. [2021-03-26 03:28:18,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 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 03:28:18,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 03:28:18,872 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 03:28:18,872 INFO L185 Difference]: Start difference. First operand has 244 places, 123 transitions, 4086 flow. Second operand 3 states and 728 transitions. [2021-03-26 03:28:18,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 122 transitions, 4086 flow [2021-03-26 03:28:18,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 122 transitions, 546 flow, removed 1770 selfloop flow, removed 0 redundant places. [2021-03-26 03:28:18,930 INFO L241 Difference]: Finished difference. Result has 245 places, 122 transitions, 546 flow [2021-03-26 03:28:18,931 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=546, PETRI_PLACES=245, PETRI_TRANSITIONS=122} [2021-03-26 03:28:18,931 INFO L343 CegarLoopForPetriNet]: 244 programPoint places, 1 predicate places. [2021-03-26 03:28:18,931 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:28:18,931 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 245 places, 122 transitions, 546 flow [2021-03-26 03:28:18,931 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 245 places, 122 transitions, 546 flow [2021-03-26 03:28:18,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 245 places, 122 transitions, 546 flow [2021-03-26 03:28:18,943 INFO L129 PetriNetUnfolder]: 0/122 cut-off events. [2021-03-26 03:28:18,943 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:18,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 122 events. 0/122 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 114 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 0. Up to 61 conditions per place. [2021-03-26 03:28:18,945 INFO L142 LiptonReduction]: Number of co-enabled transitions 7200 [2021-03-26 03:28:18,951 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:28:18,951 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:28:18,951 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20 [2021-03-26 03:28:18,953 INFO L480 AbstractCegarLoop]: Abstraction has has 245 places, 122 transitions, 546 flow [2021-03-26 03:28:18,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 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 03:28:18,953 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:28:18,953 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:28:18,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-03-26 03:28:18,953 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:28:18,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:28:18,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1829601534, now seen corresponding path program 1 times [2021-03-26 03:28:18,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:28:18,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124253311] [2021-03-26 03:28:18,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:28:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:28:18,964 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:28:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:28:18,965 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:28:18,972 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:28:18,972 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:28:18,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-03-26 03:28:18,972 WARN L342 ceAbstractionStarter]: 60 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:28:18,972 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 61 thread instances. [2021-03-26 03:28:19,029 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:28:19,029 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:28:19,029 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:28:19,029 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:28:19,029 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:28:19,029 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:28:19,029 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:28:19,029 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:28:19,030 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:28:19,030 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:28:19,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 311 places, 188 transitions, 4341 flow [2021-03-26 03:28:19,080 INFO L129 PetriNetUnfolder]: 0/371 cut-off events. [2021-03-26 03:28:19,080 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:19,080 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2446 conditions, 371 events. 0/371 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1193 event pairs, 0 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 0. Up to 62 conditions per place. [2021-03-26 03:28:19,080 INFO L82 GeneralOperation]: Start removeDead. Operand has 311 places, 188 transitions, 4341 flow [2021-03-26 03:28:19,082 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 309 places, 186 transitions, 4337 flow [2021-03-26 03:28:19,082 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:28:19,082 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 309 places, 186 transitions, 4337 flow [2021-03-26 03:28:19,082 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 309 places, 186 transitions, 4337 flow [2021-03-26 03:28:19,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 309 places, 186 transitions, 4337 flow [2021-03-26 03:28:19,122 INFO L129 PetriNetUnfolder]: 0/247 cut-off events. [2021-03-26 03:28:19,122 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:19,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2322 conditions, 247 events. 0/247 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 683 event pairs, 0 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 0. Up to 62 conditions per place. [2021-03-26 03:28:19,137 INFO L142 LiptonReduction]: Number of co-enabled transitions 22448 [2021-03-26 03:28:19,820 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-03-26 03:28:24,437 INFO L154 LiptonReduction]: Checked pairs total: 9272 [2021-03-26 03:28:24,437 INFO L156 LiptonReduction]: Total number of compositions: 61 [2021-03-26 03:28:24,438 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5356 [2021-03-26 03:28:24,439 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:28:24,439 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:24,439 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:28:24,439 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:28:24,439 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:28:24,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:28:24,440 INFO L82 PathProgramCache]: Analyzing trace with hash 250915, now seen corresponding path program 1 times [2021-03-26 03:28:24,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:28:24,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313142047] [2021-03-26 03:28:24,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:28:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:28:24,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:28:24,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:28:24,453 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 03:28:24,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313142047] [2021-03-26 03:28:24,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:28:24,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:28:24,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871906898] [2021-03-26 03:28:24,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:28:24,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:28:24,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:28:24,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:28:24,454 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 249 [2021-03-26 03:28:24,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 125 transitions, 4215 flow. Second operand has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 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 03:28:24,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:28:24,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 249 [2021-03-26 03:28:24,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:28:24,483 INFO L129 PetriNetUnfolder]: 0/124 cut-off events. [2021-03-26 03:28:24,483 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:24,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2201 conditions, 124 events. 0/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 135 event pairs, 0 based on Foata normal form. 62/186 useless extension candidates. Maximal degree in co-relation 0. Up to 62 conditions per place. [2021-03-26 03:28:24,483 INFO L132 encePairwiseOnDemand]: 247/249 looper letters, 0 selfloop transitions, 1 changer transitions 0/124 dead transitions. [2021-03-26 03:28:24,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 124 transitions, 4215 flow [2021-03-26 03:28:24,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:28:24,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:28:24,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 740 transitions. [2021-03-26 03:28:24,484 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9906291834002677 [2021-03-26 03:28:24,484 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 740 transitions. [2021-03-26 03:28:24,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 740 transitions. [2021-03-26 03:28:24,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:28:24,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 740 transitions. [2021-03-26 03:28:24,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 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 03:28:24,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 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 03:28:24,485 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 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 03:28:24,485 INFO L185 Difference]: Start difference. First operand has 248 places, 125 transitions, 4215 flow. Second operand 3 states and 740 transitions. [2021-03-26 03:28:24,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 124 transitions, 4215 flow [2021-03-26 03:28:24,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 124 transitions, 555 flow, removed 1830 selfloop flow, removed 0 redundant places. [2021-03-26 03:28:24,549 INFO L241 Difference]: Finished difference. Result has 249 places, 124 transitions, 555 flow [2021-03-26 03:28:24,549 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=555, PETRI_PLACES=249, PETRI_TRANSITIONS=124} [2021-03-26 03:28:24,549 INFO L343 CegarLoopForPetriNet]: 248 programPoint places, 1 predicate places. [2021-03-26 03:28:24,549 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:28:24,549 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 249 places, 124 transitions, 555 flow [2021-03-26 03:28:24,550 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 249 places, 124 transitions, 555 flow [2021-03-26 03:28:24,550 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 249 places, 124 transitions, 555 flow [2021-03-26 03:28:24,562 INFO L129 PetriNetUnfolder]: 0/124 cut-off events. [2021-03-26 03:28:24,562 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:24,562 INFO L84 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 124 events. 0/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 123 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 0. Up to 62 conditions per place. [2021-03-26 03:28:24,564 INFO L142 LiptonReduction]: Number of co-enabled transitions 7442 [2021-03-26 03:28:24,570 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:28:24,570 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:28:24,570 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 21 [2021-03-26 03:28:24,572 INFO L480 AbstractCegarLoop]: Abstraction has has 249 places, 124 transitions, 555 flow [2021-03-26 03:28:24,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 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 03:28:24,572 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:28:24,572 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:28:24,572 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-03-26 03:28:24,572 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:28:24,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:28:24,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1408131485, now seen corresponding path program 1 times [2021-03-26 03:28:24,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:28:24,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492773481] [2021-03-26 03:28:24,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:28:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:28:24,583 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:28:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:28:24,585 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:28:24,592 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:28:24,592 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:28:24,592 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-03-26 03:28:24,592 WARN L342 ceAbstractionStarter]: 61 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:28:24,592 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 62 thread instances. [2021-03-26 03:28:24,641 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:28:24,641 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:28:24,642 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:28:24,642 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:28:24,642 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:28:24,642 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:28:24,642 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:28:24,642 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:28:24,642 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:28:24,642 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:28:24,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 316 places, 191 transitions, 4474 flow [2021-03-26 03:28:24,694 INFO L129 PetriNetUnfolder]: 0/377 cut-off events. [2021-03-26 03:28:24,694 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:24,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2517 conditions, 377 events. 0/377 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1230 event pairs, 0 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 0. Up to 63 conditions per place. [2021-03-26 03:28:24,694 INFO L82 GeneralOperation]: Start removeDead. Operand has 316 places, 191 transitions, 4474 flow [2021-03-26 03:28:24,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 314 places, 189 transitions, 4470 flow [2021-03-26 03:28:24,696 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:28:24,696 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 314 places, 189 transitions, 4470 flow [2021-03-26 03:28:24,696 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 314 places, 189 transitions, 4470 flow [2021-03-26 03:28:24,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 314 places, 189 transitions, 4470 flow [2021-03-26 03:28:24,737 INFO L129 PetriNetUnfolder]: 0/251 cut-off events. [2021-03-26 03:28:24,737 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:24,738 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2391 conditions, 251 events. 0/251 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 787 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 0. Up to 63 conditions per place. [2021-03-26 03:28:24,753 INFO L142 LiptonReduction]: Number of co-enabled transitions 23188 [2021-03-26 03:28:25,059 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-03-26 03:28:30,373 INFO L154 LiptonReduction]: Checked pairs total: 9579 [2021-03-26 03:28:30,373 INFO L156 LiptonReduction]: Total number of compositions: 62 [2021-03-26 03:28:30,373 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5677 [2021-03-26 03:28:30,375 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:28:30,375 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:30,375 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:28:30,375 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:28:30,375 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:28:30,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:28:30,375 INFO L82 PathProgramCache]: Analyzing trace with hash 258979, now seen corresponding path program 1 times [2021-03-26 03:28:30,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:28:30,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613434066] [2021-03-26 03:28:30,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:28:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:28:30,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:28:30,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:28:30,389 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 03:28:30,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613434066] [2021-03-26 03:28:30,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:28:30,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:28:30,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194612107] [2021-03-26 03:28:30,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:28:30,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:28:30,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:28:30,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:28:30,390 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 253 [2021-03-26 03:28:30,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 127 transitions, 4346 flow. Second operand has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 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 03:28:30,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:28:30,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 253 [2021-03-26 03:28:30,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:28:30,419 INFO L129 PetriNetUnfolder]: 0/126 cut-off events. [2021-03-26 03:28:30,419 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:30,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2268 conditions, 126 events. 0/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 126 event pairs, 0 based on Foata normal form. 63/189 useless extension candidates. Maximal degree in co-relation 0. Up to 63 conditions per place. [2021-03-26 03:28:30,419 INFO L132 encePairwiseOnDemand]: 251/253 looper letters, 0 selfloop transitions, 1 changer transitions 0/126 dead transitions. [2021-03-26 03:28:30,419 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 126 transitions, 4346 flow [2021-03-26 03:28:30,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:28:30,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:28:30,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 752 transitions. [2021-03-26 03:28:30,420 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9907773386034255 [2021-03-26 03:28:30,420 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 752 transitions. [2021-03-26 03:28:30,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 752 transitions. [2021-03-26 03:28:30,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:28:30,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 752 transitions. [2021-03-26 03:28:30,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 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 03:28:30,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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 03:28:30,421 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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 03:28:30,421 INFO L185 Difference]: Start difference. First operand has 252 places, 127 transitions, 4346 flow. Second operand 3 states and 752 transitions. [2021-03-26 03:28:30,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 126 transitions, 4346 flow [2021-03-26 03:28:30,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 126 transitions, 564 flow, removed 1891 selfloop flow, removed 0 redundant places. [2021-03-26 03:28:30,493 INFO L241 Difference]: Finished difference. Result has 253 places, 126 transitions, 564 flow [2021-03-26 03:28:30,493 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=564, PETRI_PLACES=253, PETRI_TRANSITIONS=126} [2021-03-26 03:28:30,493 INFO L343 CegarLoopForPetriNet]: 252 programPoint places, 1 predicate places. [2021-03-26 03:28:30,493 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:28:30,493 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 253 places, 126 transitions, 564 flow [2021-03-26 03:28:30,493 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 253 places, 126 transitions, 564 flow [2021-03-26 03:28:30,494 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 253 places, 126 transitions, 564 flow [2021-03-26 03:28:30,507 INFO L129 PetriNetUnfolder]: 0/126 cut-off events. [2021-03-26 03:28:30,507 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:30,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 377 conditions, 126 events. 0/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 122 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 0. Up to 63 conditions per place. [2021-03-26 03:28:30,641 INFO L142 LiptonReduction]: Number of co-enabled transitions 7688 [2021-03-26 03:28:30,647 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:28:30,647 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:28:30,647 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 154 [2021-03-26 03:28:30,648 INFO L480 AbstractCegarLoop]: Abstraction has has 253 places, 126 transitions, 564 flow [2021-03-26 03:28:30,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 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 03:28:30,649 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:28:30,649 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:28:30,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-03-26 03:28:30,649 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:28:30,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:28:30,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1519600837, now seen corresponding path program 1 times [2021-03-26 03:28:30,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:28:30,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258790168] [2021-03-26 03:28:30,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:28:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:28:30,667 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:28:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:28:30,668 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:28:30,677 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:28:30,677 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:28:30,677 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-03-26 03:28:30,677 WARN L342 ceAbstractionStarter]: 62 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:28:30,677 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 63 thread instances. [2021-03-26 03:28:30,729 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:28:30,729 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:28:30,730 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:28:30,730 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:28:30,730 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:28:30,730 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:28:30,730 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:28:30,730 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:28:30,730 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:28:30,730 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:28:30,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 321 places, 194 transitions, 4609 flow [2021-03-26 03:28:30,785 INFO L129 PetriNetUnfolder]: 0/383 cut-off events. [2021-03-26 03:28:30,785 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:30,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2589 conditions, 383 events. 0/383 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1401 event pairs, 0 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 0. Up to 64 conditions per place. [2021-03-26 03:28:30,786 INFO L82 GeneralOperation]: Start removeDead. Operand has 321 places, 194 transitions, 4609 flow [2021-03-26 03:28:30,787 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 319 places, 192 transitions, 4605 flow [2021-03-26 03:28:30,787 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:28:30,787 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 319 places, 192 transitions, 4605 flow [2021-03-26 03:28:30,787 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 319 places, 192 transitions, 4605 flow [2021-03-26 03:28:30,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 319 places, 192 transitions, 4605 flow [2021-03-26 03:28:30,832 INFO L129 PetriNetUnfolder]: 0/255 cut-off events. [2021-03-26 03:28:30,832 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:30,832 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2461 conditions, 255 events. 0/255 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 689 event pairs, 0 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 0. Up to 64 conditions per place. [2021-03-26 03:28:30,848 INFO L142 LiptonReduction]: Number of co-enabled transitions 23940 [2021-03-26 03:28:36,649 INFO L154 LiptonReduction]: Checked pairs total: 9891 [2021-03-26 03:28:36,650 INFO L156 LiptonReduction]: Total number of compositions: 63 [2021-03-26 03:28:36,650 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5863 [2021-03-26 03:28:36,651 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:28:36,651 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:36,651 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:28:36,651 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:28:36,651 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:28:36,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:28:36,652 INFO L82 PathProgramCache]: Analyzing trace with hash 267171, now seen corresponding path program 1 times [2021-03-26 03:28:36,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:28:36,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213209506] [2021-03-26 03:28:36,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:28:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:28:36,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:28:36,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:28:36,666 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 03:28:36,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213209506] [2021-03-26 03:28:36,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:28:36,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:28:36,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749330497] [2021-03-26 03:28:36,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:28:36,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:28:36,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:28:36,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:28:36,667 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 257 [2021-03-26 03:28:36,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 129 transitions, 4479 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 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 03:28:36,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:28:36,667 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 257 [2021-03-26 03:28:36,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:28:36,698 INFO L129 PetriNetUnfolder]: 0/128 cut-off events. [2021-03-26 03:28:36,698 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:36,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2336 conditions, 128 events. 0/128 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 123 event pairs, 0 based on Foata normal form. 64/192 useless extension candidates. Maximal degree in co-relation 0. Up to 64 conditions per place. [2021-03-26 03:28:36,698 INFO L132 encePairwiseOnDemand]: 255/257 looper letters, 0 selfloop transitions, 1 changer transitions 0/128 dead transitions. [2021-03-26 03:28:36,698 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 128 transitions, 4479 flow [2021-03-26 03:28:36,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:28:36,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:28:36,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 764 transitions. [2021-03-26 03:28:36,699 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9909208819714657 [2021-03-26 03:28:36,699 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 764 transitions. [2021-03-26 03:28:36,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 764 transitions. [2021-03-26 03:28:36,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:28:36,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 764 transitions. [2021-03-26 03:28:36,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 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 03:28:36,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 03:28:36,701 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 03:28:36,701 INFO L185 Difference]: Start difference. First operand has 256 places, 129 transitions, 4479 flow. Second operand 3 states and 764 transitions. [2021-03-26 03:28:36,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 128 transitions, 4479 flow [2021-03-26 03:28:36,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 128 transitions, 573 flow, removed 1953 selfloop flow, removed 0 redundant places. [2021-03-26 03:28:36,778 INFO L241 Difference]: Finished difference. Result has 257 places, 128 transitions, 573 flow [2021-03-26 03:28:36,778 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=573, PETRI_PLACES=257, PETRI_TRANSITIONS=128} [2021-03-26 03:28:36,778 INFO L343 CegarLoopForPetriNet]: 256 programPoint places, 1 predicate places. [2021-03-26 03:28:36,778 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:28:36,778 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 257 places, 128 transitions, 573 flow [2021-03-26 03:28:36,778 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 257 places, 128 transitions, 573 flow [2021-03-26 03:28:36,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 257 places, 128 transitions, 573 flow [2021-03-26 03:28:36,792 INFO L129 PetriNetUnfolder]: 0/128 cut-off events. [2021-03-26 03:28:36,792 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:36,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 128 events. 0/128 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 111 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 0. Up to 64 conditions per place. [2021-03-26 03:28:36,794 INFO L142 LiptonReduction]: Number of co-enabled transitions 7938 [2021-03-26 03:28:36,800 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:28:36,800 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:28:36,800 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 22 [2021-03-26 03:28:36,802 INFO L480 AbstractCegarLoop]: Abstraction has has 257 places, 128 transitions, 573 flow [2021-03-26 03:28:36,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 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 03:28:36,802 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:28:36,803 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:28:36,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-03-26 03:28:36,803 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:28:36,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:28:36,803 INFO L82 PathProgramCache]: Analyzing trace with hash -2027780994, now seen corresponding path program 1 times [2021-03-26 03:28:36,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:28:36,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130067092] [2021-03-26 03:28:36,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:28:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:28:36,814 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:28:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:28:36,816 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:28:36,824 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:28:36,824 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:28:36,824 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-03-26 03:28:36,824 WARN L342 ceAbstractionStarter]: 63 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:28:36,824 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 64 thread instances. [2021-03-26 03:28:36,879 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:28:36,880 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:28:36,880 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:28:36,880 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:28:36,880 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:28:36,880 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:28:36,880 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:28:36,880 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:28:36,880 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:28:36,880 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:28:36,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 326 places, 197 transitions, 4746 flow [2021-03-26 03:28:36,938 INFO L129 PetriNetUnfolder]: 0/389 cut-off events. [2021-03-26 03:28:36,938 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:36,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2662 conditions, 389 events. 0/389 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1407 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 0. Up to 65 conditions per place. [2021-03-26 03:28:36,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 326 places, 197 transitions, 4746 flow [2021-03-26 03:28:36,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 324 places, 195 transitions, 4742 flow [2021-03-26 03:28:36,940 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:28:36,940 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 324 places, 195 transitions, 4742 flow [2021-03-26 03:28:36,940 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 324 places, 195 transitions, 4742 flow [2021-03-26 03:28:36,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 324 places, 195 transitions, 4742 flow [2021-03-26 03:28:36,986 INFO L129 PetriNetUnfolder]: 0/259 cut-off events. [2021-03-26 03:28:36,986 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:36,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2532 conditions, 259 events. 0/259 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 701 event pairs, 0 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 0. Up to 65 conditions per place. [2021-03-26 03:28:37,004 INFO L142 LiptonReduction]: Number of co-enabled transitions 24704 [2021-03-26 03:28:43,027 INFO L154 LiptonReduction]: Checked pairs total: 10208 [2021-03-26 03:28:43,028 INFO L156 LiptonReduction]: Total number of compositions: 64 [2021-03-26 03:28:43,028 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6088 [2021-03-26 03:28:43,029 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:28:43,029 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:43,030 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:28:43,030 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:28:43,030 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:28:43,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:28:43,030 INFO L82 PathProgramCache]: Analyzing trace with hash 275491, now seen corresponding path program 1 times [2021-03-26 03:28:43,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:28:43,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161533389] [2021-03-26 03:28:43,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:28:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:28:43,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:28:43,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:28:43,046 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 03:28:43,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161533389] [2021-03-26 03:28:43,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:28:43,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:28:43,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400295859] [2021-03-26 03:28:43,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:28:43,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:28:43,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:28:43,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:28:43,047 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 261 [2021-03-26 03:28:43,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 131 transitions, 4614 flow. Second operand has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 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 03:28:43,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:28:43,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 261 [2021-03-26 03:28:43,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:28:43,078 INFO L129 PetriNetUnfolder]: 0/130 cut-off events. [2021-03-26 03:28:43,079 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:43,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2405 conditions, 130 events. 0/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 150 event pairs, 0 based on Foata normal form. 65/195 useless extension candidates. Maximal degree in co-relation 0. Up to 65 conditions per place. [2021-03-26 03:28:43,079 INFO L132 encePairwiseOnDemand]: 259/261 looper letters, 0 selfloop transitions, 1 changer transitions 0/130 dead transitions. [2021-03-26 03:28:43,079 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 130 transitions, 4614 flow [2021-03-26 03:28:43,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:28:43,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:28:43,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 776 transitions. [2021-03-26 03:28:43,080 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9910600255427842 [2021-03-26 03:28:43,080 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 776 transitions. [2021-03-26 03:28:43,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 776 transitions. [2021-03-26 03:28:43,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:28:43,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 776 transitions. [2021-03-26 03:28:43,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 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 03:28:43,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 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 03:28:43,081 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 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 03:28:43,081 INFO L185 Difference]: Start difference. First operand has 260 places, 131 transitions, 4614 flow. Second operand 3 states and 776 transitions. [2021-03-26 03:28:43,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 130 transitions, 4614 flow [2021-03-26 03:28:43,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 130 transitions, 582 flow, removed 2016 selfloop flow, removed 0 redundant places. [2021-03-26 03:28:43,167 INFO L241 Difference]: Finished difference. Result has 261 places, 130 transitions, 582 flow [2021-03-26 03:28:43,167 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=582, PETRI_PLACES=261, PETRI_TRANSITIONS=130} [2021-03-26 03:28:43,167 INFO L343 CegarLoopForPetriNet]: 260 programPoint places, 1 predicate places. [2021-03-26 03:28:43,167 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:28:43,167 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 261 places, 130 transitions, 582 flow [2021-03-26 03:28:43,167 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 261 places, 130 transitions, 582 flow [2021-03-26 03:28:43,168 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 261 places, 130 transitions, 582 flow [2021-03-26 03:28:43,181 INFO L129 PetriNetUnfolder]: 0/130 cut-off events. [2021-03-26 03:28:43,181 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:43,181 INFO L84 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 130 events. 0/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 128 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 0. Up to 65 conditions per place. [2021-03-26 03:28:43,184 INFO L142 LiptonReduction]: Number of co-enabled transitions 8192 [2021-03-26 03:28:43,190 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:28:43,190 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:28:43,190 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 23 [2021-03-26 03:28:43,192 INFO L480 AbstractCegarLoop]: Abstraction has has 261 places, 130 transitions, 582 flow [2021-03-26 03:28:43,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 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 03:28:43,192 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:28:43,192 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:28:43,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-03-26 03:28:43,192 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:28:43,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:28:43,193 INFO L82 PathProgramCache]: Analyzing trace with hash -438281080, now seen corresponding path program 1 times [2021-03-26 03:28:43,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:28:43,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633689150] [2021-03-26 03:28:43,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:28:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:28:43,204 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:28:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:28:43,205 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:28:43,214 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:28:43,214 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:28:43,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-03-26 03:28:43,214 WARN L342 ceAbstractionStarter]: 64 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:28:43,214 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 65 thread instances. [2021-03-26 03:28:43,261 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:28:43,261 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:28:43,262 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:28:43,262 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:28:43,262 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:28:43,262 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:28:43,262 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:28:43,262 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:28:43,262 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:28:43,262 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:28:43,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 331 places, 200 transitions, 4885 flow [2021-03-26 03:28:43,320 INFO L129 PetriNetUnfolder]: 0/395 cut-off events. [2021-03-26 03:28:43,320 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:43,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2736 conditions, 395 events. 0/395 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1471 event pairs, 0 based on Foata normal form. 0/329 useless extension candidates. Maximal degree in co-relation 0. Up to 66 conditions per place. [2021-03-26 03:28:43,320 INFO L82 GeneralOperation]: Start removeDead. Operand has 331 places, 200 transitions, 4885 flow [2021-03-26 03:28:43,322 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 198 transitions, 4881 flow [2021-03-26 03:28:43,322 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:28:43,322 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 329 places, 198 transitions, 4881 flow [2021-03-26 03:28:43,322 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 329 places, 198 transitions, 4881 flow [2021-03-26 03:28:43,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 329 places, 198 transitions, 4881 flow [2021-03-26 03:28:43,369 INFO L129 PetriNetUnfolder]: 0/263 cut-off events. [2021-03-26 03:28:43,370 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:43,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2604 conditions, 263 events. 0/263 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 735 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 0. Up to 66 conditions per place. [2021-03-26 03:28:43,387 INFO L142 LiptonReduction]: Number of co-enabled transitions 25480 [2021-03-26 03:28:49,704 INFO L154 LiptonReduction]: Checked pairs total: 10530 [2021-03-26 03:28:49,705 INFO L156 LiptonReduction]: Total number of compositions: 65 [2021-03-26 03:28:49,705 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6383 [2021-03-26 03:28:49,706 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:28:49,706 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:49,706 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:28:49,707 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:28:49,707 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:28:49,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:28:49,707 INFO L82 PathProgramCache]: Analyzing trace with hash 283939, now seen corresponding path program 1 times [2021-03-26 03:28:49,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:28:49,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904511346] [2021-03-26 03:28:49,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:28:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:28:49,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:28:49,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:28:49,721 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 03:28:49,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904511346] [2021-03-26 03:28:49,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:28:49,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:28:49,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455941032] [2021-03-26 03:28:49,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:28:49,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:28:49,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:28:49,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:28:49,722 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 265 [2021-03-26 03:28:49,722 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 133 transitions, 4751 flow. Second operand has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 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 03:28:49,722 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:28:49,722 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 265 [2021-03-26 03:28:49,722 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:28:49,754 INFO L129 PetriNetUnfolder]: 0/132 cut-off events. [2021-03-26 03:28:49,754 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:49,754 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2475 conditions, 132 events. 0/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 127 event pairs, 0 based on Foata normal form. 66/198 useless extension candidates. Maximal degree in co-relation 0. Up to 66 conditions per place. [2021-03-26 03:28:49,755 INFO L132 encePairwiseOnDemand]: 263/265 looper letters, 0 selfloop transitions, 1 changer transitions 0/132 dead transitions. [2021-03-26 03:28:49,755 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 132 transitions, 4751 flow [2021-03-26 03:28:49,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:28:49,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:28:49,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 788 transitions. [2021-03-26 03:28:49,755 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9911949685534591 [2021-03-26 03:28:49,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 788 transitions. [2021-03-26 03:28:49,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 788 transitions. [2021-03-26 03:28:49,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:28:49,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 788 transitions. [2021-03-26 03:28:49,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 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 03:28:49,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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 03:28:49,757 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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 03:28:49,757 INFO L185 Difference]: Start difference. First operand has 264 places, 133 transitions, 4751 flow. Second operand 3 states and 788 transitions. [2021-03-26 03:28:49,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 132 transitions, 4751 flow [2021-03-26 03:28:49,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 132 transitions, 591 flow, removed 2080 selfloop flow, removed 0 redundant places. [2021-03-26 03:28:49,845 INFO L241 Difference]: Finished difference. Result has 265 places, 132 transitions, 591 flow [2021-03-26 03:28:49,845 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=591, PETRI_PLACES=265, PETRI_TRANSITIONS=132} [2021-03-26 03:28:49,845 INFO L343 CegarLoopForPetriNet]: 264 programPoint places, 1 predicate places. [2021-03-26 03:28:49,845 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:28:49,845 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 265 places, 132 transitions, 591 flow [2021-03-26 03:28:49,846 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 265 places, 132 transitions, 591 flow [2021-03-26 03:28:49,846 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 265 places, 132 transitions, 591 flow [2021-03-26 03:28:49,860 INFO L129 PetriNetUnfolder]: 0/132 cut-off events. [2021-03-26 03:28:49,860 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:49,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 132 events. 0/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 127 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 0. Up to 66 conditions per place. [2021-03-26 03:28:49,862 INFO L142 LiptonReduction]: Number of co-enabled transitions 8450 [2021-03-26 03:28:49,869 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:28:49,869 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:28:49,869 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 24 [2021-03-26 03:28:49,871 INFO L480 AbstractCegarLoop]: Abstraction has has 265 places, 132 transitions, 591 flow [2021-03-26 03:28:49,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 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 03:28:49,871 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:28:49,871 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:28:49,871 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-03-26 03:28:49,871 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:28:49,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:28:49,871 INFO L82 PathProgramCache]: Analyzing trace with hash 19023529, now seen corresponding path program 1 times [2021-03-26 03:28:49,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:28:49,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008139148] [2021-03-26 03:28:49,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:28:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:28:49,883 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:28:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:28:49,884 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:28:49,892 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:28:49,892 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:28:49,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-03-26 03:28:49,893 WARN L342 ceAbstractionStarter]: 65 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:28:49,893 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 66 thread instances. [2021-03-26 03:28:49,946 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:28:49,947 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:28:49,947 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:28:49,947 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:28:49,947 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:28:49,947 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:28:49,947 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:28:49,947 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:28:49,947 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:28:49,947 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:28:49,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 336 places, 203 transitions, 5026 flow [2021-03-26 03:28:50,007 INFO L129 PetriNetUnfolder]: 0/401 cut-off events. [2021-03-26 03:28:50,007 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:50,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2811 conditions, 401 events. 0/401 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1541 event pairs, 0 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 0. Up to 67 conditions per place. [2021-03-26 03:28:50,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 336 places, 203 transitions, 5026 flow [2021-03-26 03:28:50,009 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 334 places, 201 transitions, 5022 flow [2021-03-26 03:28:50,009 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:28:50,009 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 334 places, 201 transitions, 5022 flow [2021-03-26 03:28:50,009 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 334 places, 201 transitions, 5022 flow [2021-03-26 03:28:50,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 334 places, 201 transitions, 5022 flow [2021-03-26 03:28:50,057 INFO L129 PetriNetUnfolder]: 0/267 cut-off events. [2021-03-26 03:28:50,057 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:50,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 267 events. 0/267 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 846 event pairs, 0 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 0. Up to 67 conditions per place. [2021-03-26 03:28:50,075 INFO L142 LiptonReduction]: Number of co-enabled transitions 26268 [2021-03-26 03:28:56,594 INFO L154 LiptonReduction]: Checked pairs total: 10857 [2021-03-26 03:28:56,595 INFO L156 LiptonReduction]: Total number of compositions: 66 [2021-03-26 03:28:56,595 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6586 [2021-03-26 03:28:56,597 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:28:56,597 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:56,597 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:28:56,597 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:28:56,597 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:28:56,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:28:56,597 INFO L82 PathProgramCache]: Analyzing trace with hash 292515, now seen corresponding path program 1 times [2021-03-26 03:28:56,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:28:56,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140458575] [2021-03-26 03:28:56,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:28:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:28:56,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:28:56,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:28:56,612 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 03:28:56,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140458575] [2021-03-26 03:28:56,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:28:56,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:28:56,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949069762] [2021-03-26 03:28:56,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:28:56,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:28:56,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:28:56,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:28:56,613 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 269 [2021-03-26 03:28:56,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 135 transitions, 4890 flow. Second operand has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 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 03:28:56,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:28:56,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 269 [2021-03-26 03:28:56,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:28:56,648 INFO L129 PetriNetUnfolder]: 0/134 cut-off events. [2021-03-26 03:28:56,648 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:56,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2546 conditions, 134 events. 0/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 146 event pairs, 0 based on Foata normal form. 67/201 useless extension candidates. Maximal degree in co-relation 0. Up to 67 conditions per place. [2021-03-26 03:28:56,649 INFO L132 encePairwiseOnDemand]: 267/269 looper letters, 0 selfloop transitions, 1 changer transitions 0/134 dead transitions. [2021-03-26 03:28:56,649 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 134 transitions, 4890 flow [2021-03-26 03:28:56,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:28:56,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:28:56,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 800 transitions. [2021-03-26 03:28:56,649 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9913258983890955 [2021-03-26 03:28:56,649 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 800 transitions. [2021-03-26 03:28:56,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 800 transitions. [2021-03-26 03:28:56,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:28:56,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 800 transitions. [2021-03-26 03:28:56,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 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 03:28:56,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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 03:28:56,651 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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 03:28:56,651 INFO L185 Difference]: Start difference. First operand has 268 places, 135 transitions, 4890 flow. Second operand 3 states and 800 transitions. [2021-03-26 03:28:56,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 134 transitions, 4890 flow [2021-03-26 03:28:56,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 134 transitions, 600 flow, removed 2145 selfloop flow, removed 0 redundant places. [2021-03-26 03:28:56,741 INFO L241 Difference]: Finished difference. Result has 269 places, 134 transitions, 600 flow [2021-03-26 03:28:56,741 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=600, PETRI_PLACES=269, PETRI_TRANSITIONS=134} [2021-03-26 03:28:56,741 INFO L343 CegarLoopForPetriNet]: 268 programPoint places, 1 predicate places. [2021-03-26 03:28:56,741 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:28:56,741 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 134 transitions, 600 flow [2021-03-26 03:28:56,741 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 134 transitions, 600 flow [2021-03-26 03:28:56,742 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 269 places, 134 transitions, 600 flow [2021-03-26 03:28:56,756 INFO L129 PetriNetUnfolder]: 0/134 cut-off events. [2021-03-26 03:28:56,756 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:56,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 134 events. 0/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 126 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 0. Up to 67 conditions per place. [2021-03-26 03:28:56,759 INFO L142 LiptonReduction]: Number of co-enabled transitions 8712 [2021-03-26 03:28:56,766 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:28:56,766 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:28:56,766 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 25 [2021-03-26 03:28:56,769 INFO L480 AbstractCegarLoop]: Abstraction has has 269 places, 134 transitions, 600 flow [2021-03-26 03:28:56,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 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 03:28:56,769 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:28:56,769 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:28:56,769 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-03-26 03:28:56,769 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:28:56,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:28:56,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1713949771, now seen corresponding path program 1 times [2021-03-26 03:28:56,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:28:56,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785130651] [2021-03-26 03:28:56,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:28:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:28:56,782 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:28:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:28:56,783 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:28:56,792 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:28:56,792 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:28:56,792 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-03-26 03:28:56,792 WARN L342 ceAbstractionStarter]: 66 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:28:56,792 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 67 thread instances. [2021-03-26 03:28:56,844 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:28:56,844 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:28:56,845 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:28:56,845 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:28:56,845 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:28:56,845 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:28:56,845 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:28:56,845 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:28:56,845 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:28:56,845 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:28:56,846 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 341 places, 206 transitions, 5169 flow [2021-03-26 03:28:56,908 INFO L129 PetriNetUnfolder]: 0/407 cut-off events. [2021-03-26 03:28:56,908 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:56,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2887 conditions, 407 events. 0/407 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1498 event pairs, 0 based on Foata normal form. 0/339 useless extension candidates. Maximal degree in co-relation 0. Up to 68 conditions per place. [2021-03-26 03:28:56,909 INFO L82 GeneralOperation]: Start removeDead. Operand has 341 places, 206 transitions, 5169 flow [2021-03-26 03:28:56,910 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 339 places, 204 transitions, 5165 flow [2021-03-26 03:28:56,910 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:28:56,911 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 339 places, 204 transitions, 5165 flow [2021-03-26 03:28:56,911 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 339 places, 204 transitions, 5165 flow [2021-03-26 03:28:56,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 339 places, 204 transitions, 5165 flow [2021-03-26 03:28:56,962 INFO L129 PetriNetUnfolder]: 0/271 cut-off events. [2021-03-26 03:28:56,963 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:28:56,963 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2751 conditions, 271 events. 0/271 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 848 event pairs, 0 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 0. Up to 68 conditions per place. [2021-03-26 03:28:56,981 INFO L142 LiptonReduction]: Number of co-enabled transitions 27068 [2021-03-26 03:29:03,877 INFO L154 LiptonReduction]: Checked pairs total: 11189 [2021-03-26 03:29:03,877 INFO L156 LiptonReduction]: Total number of compositions: 67 [2021-03-26 03:29:03,877 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6967 [2021-03-26 03:29:03,878 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:29:03,878 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:03,878 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:29:03,879 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:29:03,879 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:29:03,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:29:03,882 INFO L82 PathProgramCache]: Analyzing trace with hash 301219, now seen corresponding path program 1 times [2021-03-26 03:29:03,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:29:03,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225681530] [2021-03-26 03:29:03,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:29:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:29:03,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:29:03,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:29:03,897 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 03:29:03,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225681530] [2021-03-26 03:29:03,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:29:03,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:29:03,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714113737] [2021-03-26 03:29:03,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:29:03,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:29:03,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:29:03,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:29:03,898 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 273 [2021-03-26 03:29:03,898 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 137 transitions, 5031 flow. Second operand has 3 states, 3 states have (on average 270.6666666666667) internal successors, (812), 3 states have internal predecessors, (812), 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 03:29:03,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:29:03,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 273 [2021-03-26 03:29:03,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:29:03,933 INFO L129 PetriNetUnfolder]: 0/136 cut-off events. [2021-03-26 03:29:03,933 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:03,933 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2618 conditions, 136 events. 0/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 131 event pairs, 0 based on Foata normal form. 68/204 useless extension candidates. Maximal degree in co-relation 0. Up to 68 conditions per place. [2021-03-26 03:29:03,933 INFO L132 encePairwiseOnDemand]: 271/273 looper letters, 0 selfloop transitions, 1 changer transitions 0/136 dead transitions. [2021-03-26 03:29:03,933 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 136 transitions, 5031 flow [2021-03-26 03:29:03,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:29:03,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:29:03,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 812 transitions. [2021-03-26 03:29:03,934 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9914529914529915 [2021-03-26 03:29:03,934 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 812 transitions. [2021-03-26 03:29:03,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 812 transitions. [2021-03-26 03:29:03,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:29:03,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 812 transitions. [2021-03-26 03:29:03,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.6666666666667) internal successors, (812), 3 states have internal predecessors, (812), 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 03:29:03,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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 03:29:03,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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 03:29:03,935 INFO L185 Difference]: Start difference. First operand has 272 places, 137 transitions, 5031 flow. Second operand 3 states and 812 transitions. [2021-03-26 03:29:03,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 136 transitions, 5031 flow [2021-03-26 03:29:04,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 136 transitions, 609 flow, removed 2211 selfloop flow, removed 0 redundant places. [2021-03-26 03:29:04,025 INFO L241 Difference]: Finished difference. Result has 273 places, 136 transitions, 609 flow [2021-03-26 03:29:04,025 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=609, PETRI_PLACES=273, PETRI_TRANSITIONS=136} [2021-03-26 03:29:04,025 INFO L343 CegarLoopForPetriNet]: 272 programPoint places, 1 predicate places. [2021-03-26 03:29:04,025 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:29:04,025 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 273 places, 136 transitions, 609 flow [2021-03-26 03:29:04,026 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 273 places, 136 transitions, 609 flow [2021-03-26 03:29:04,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 273 places, 136 transitions, 609 flow [2021-03-26 03:29:04,040 INFO L129 PetriNetUnfolder]: 0/136 cut-off events. [2021-03-26 03:29:04,041 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:04,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 136 events. 0/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 129 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 0. Up to 68 conditions per place. [2021-03-26 03:29:04,043 INFO L142 LiptonReduction]: Number of co-enabled transitions 8978 [2021-03-26 03:29:04,050 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:29:04,050 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:29:04,050 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 25 [2021-03-26 03:29:04,051 INFO L480 AbstractCegarLoop]: Abstraction has has 273 places, 136 transitions, 609 flow [2021-03-26 03:29:04,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 270.6666666666667) internal successors, (812), 3 states have internal predecessors, (812), 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 03:29:04,052 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:29:04,052 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:29:04,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-03-26 03:29:04,052 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:29:04,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:29:04,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1351835364, now seen corresponding path program 1 times [2021-03-26 03:29:04,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:29:04,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127523286] [2021-03-26 03:29:04,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:29:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:29:04,065 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:29:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:29:04,067 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:29:04,076 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:29:04,076 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:29:04,076 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-03-26 03:29:04,076 WARN L342 ceAbstractionStarter]: 67 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:29:04,076 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 68 thread instances. [2021-03-26 03:29:04,131 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:29:04,131 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:29:04,131 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:29:04,131 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:29:04,131 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:29:04,131 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:29:04,131 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:29:04,131 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:29:04,131 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:29:04,132 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:29:04,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 346 places, 209 transitions, 5314 flow [2021-03-26 03:29:04,194 INFO L129 PetriNetUnfolder]: 0/413 cut-off events. [2021-03-26 03:29:04,194 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:04,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2964 conditions, 413 events. 0/413 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1504 event pairs, 0 based on Foata normal form. 0/344 useless extension candidates. Maximal degree in co-relation 0. Up to 69 conditions per place. [2021-03-26 03:29:04,194 INFO L82 GeneralOperation]: Start removeDead. Operand has 346 places, 209 transitions, 5314 flow [2021-03-26 03:29:04,196 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 344 places, 207 transitions, 5310 flow [2021-03-26 03:29:04,196 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:29:04,196 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 344 places, 207 transitions, 5310 flow [2021-03-26 03:29:04,197 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 344 places, 207 transitions, 5310 flow [2021-03-26 03:29:04,198 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 344 places, 207 transitions, 5310 flow [2021-03-26 03:29:04,249 INFO L129 PetriNetUnfolder]: 0/275 cut-off events. [2021-03-26 03:29:04,249 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:04,249 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2826 conditions, 275 events. 0/275 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 868 event pairs, 0 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 0. Up to 69 conditions per place. [2021-03-26 03:29:04,269 INFO L142 LiptonReduction]: Number of co-enabled transitions 27880 [2021-03-26 03:29:11,315 INFO L154 LiptonReduction]: Checked pairs total: 11526 [2021-03-26 03:29:11,315 INFO L156 LiptonReduction]: Total number of compositions: 68 [2021-03-26 03:29:11,315 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7119 [2021-03-26 03:29:11,317 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:29:11,317 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:11,317 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:29:11,317 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:29:11,317 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:29:11,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:29:11,317 INFO L82 PathProgramCache]: Analyzing trace with hash 310051, now seen corresponding path program 1 times [2021-03-26 03:29:11,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:29:11,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074539183] [2021-03-26 03:29:11,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:29:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:29:11,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:29:11,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:29:11,334 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 03:29:11,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074539183] [2021-03-26 03:29:11,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:29:11,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:29:11,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269321071] [2021-03-26 03:29:11,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:29:11,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:29:11,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:29:11,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:29:11,335 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 277 [2021-03-26 03:29:11,336 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 139 transitions, 5174 flow. Second operand has 3 states, 3 states have (on average 274.6666666666667) internal successors, (824), 3 states have internal predecessors, (824), 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 03:29:11,336 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:29:11,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 277 [2021-03-26 03:29:11,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:29:11,372 INFO L129 PetriNetUnfolder]: 0/138 cut-off events. [2021-03-26 03:29:11,373 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:11,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2691 conditions, 138 events. 0/138 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 172 event pairs, 0 based on Foata normal form. 69/207 useless extension candidates. Maximal degree in co-relation 0. Up to 69 conditions per place. [2021-03-26 03:29:11,373 INFO L132 encePairwiseOnDemand]: 275/277 looper letters, 0 selfloop transitions, 1 changer transitions 0/138 dead transitions. [2021-03-26 03:29:11,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 138 transitions, 5174 flow [2021-03-26 03:29:11,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:29:11,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:29:11,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 824 transitions. [2021-03-26 03:29:11,374 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9915764139590855 [2021-03-26 03:29:11,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 824 transitions. [2021-03-26 03:29:11,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 824 transitions. [2021-03-26 03:29:11,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:29:11,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 824 transitions. [2021-03-26 03:29:11,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.6666666666667) internal successors, (824), 3 states have internal predecessors, (824), 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 03:29:11,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 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 03:29:11,375 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 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 03:29:11,375 INFO L185 Difference]: Start difference. First operand has 276 places, 139 transitions, 5174 flow. Second operand 3 states and 824 transitions. [2021-03-26 03:29:11,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 138 transitions, 5174 flow [2021-03-26 03:29:11,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 138 transitions, 618 flow, removed 2278 selfloop flow, removed 0 redundant places. [2021-03-26 03:29:11,468 INFO L241 Difference]: Finished difference. Result has 277 places, 138 transitions, 618 flow [2021-03-26 03:29:11,468 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=618, PETRI_PLACES=277, PETRI_TRANSITIONS=138} [2021-03-26 03:29:11,468 INFO L343 CegarLoopForPetriNet]: 276 programPoint places, 1 predicate places. [2021-03-26 03:29:11,468 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:29:11,468 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 277 places, 138 transitions, 618 flow [2021-03-26 03:29:11,469 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 277 places, 138 transitions, 618 flow [2021-03-26 03:29:11,469 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 277 places, 138 transitions, 618 flow [2021-03-26 03:29:11,484 INFO L129 PetriNetUnfolder]: 0/138 cut-off events. [2021-03-26 03:29:11,484 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:11,484 INFO L84 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 138 events. 0/138 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 130 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 0. Up to 69 conditions per place. [2021-03-26 03:29:11,487 INFO L142 LiptonReduction]: Number of co-enabled transitions 9248 [2021-03-26 03:29:11,494 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:29:11,494 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:29:11,494 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26 [2021-03-26 03:29:11,496 INFO L480 AbstractCegarLoop]: Abstraction has has 277 places, 138 transitions, 618 flow [2021-03-26 03:29:11,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 274.6666666666667) internal successors, (824), 3 states have internal predecessors, (824), 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 03:29:11,496 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:29:11,496 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:29:11,497 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-03-26 03:29:11,497 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:29:11,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:29:11,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1133995506, now seen corresponding path program 1 times [2021-03-26 03:29:11,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:29:11,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946854186] [2021-03-26 03:29:11,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:29:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:29:11,510 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:29:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:29:11,512 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:29:11,521 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:29:11,521 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:29:11,521 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-03-26 03:29:11,521 WARN L342 ceAbstractionStarter]: 68 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:29:11,521 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 69 thread instances. [2021-03-26 03:29:11,576 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:29:11,577 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:29:11,577 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:29:11,577 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:29:11,577 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:29:11,577 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:29:11,577 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:29:11,577 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:29:11,577 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:29:11,577 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:29:11,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 351 places, 212 transitions, 5461 flow [2021-03-26 03:29:11,643 INFO L129 PetriNetUnfolder]: 0/419 cut-off events. [2021-03-26 03:29:11,643 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:11,643 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3042 conditions, 419 events. 0/419 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1556 event pairs, 0 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 0. Up to 70 conditions per place. [2021-03-26 03:29:11,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 351 places, 212 transitions, 5461 flow [2021-03-26 03:29:11,645 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 349 places, 210 transitions, 5457 flow [2021-03-26 03:29:11,645 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:29:11,645 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 349 places, 210 transitions, 5457 flow [2021-03-26 03:29:11,645 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 349 places, 210 transitions, 5457 flow [2021-03-26 03:29:11,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 349 places, 210 transitions, 5457 flow [2021-03-26 03:29:11,699 INFO L129 PetriNetUnfolder]: 0/279 cut-off events. [2021-03-26 03:29:11,700 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:11,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2902 conditions, 279 events. 0/279 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 751 event pairs, 0 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 0. Up to 70 conditions per place. [2021-03-26 03:29:11,720 INFO L142 LiptonReduction]: Number of co-enabled transitions 28704 [2021-03-26 03:29:19,282 INFO L154 LiptonReduction]: Checked pairs total: 11868 [2021-03-26 03:29:19,282 INFO L156 LiptonReduction]: Total number of compositions: 69 [2021-03-26 03:29:19,283 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7638 [2021-03-26 03:29:19,286 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:29:19,286 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:19,286 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:29:19,286 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:29:19,286 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:29:19,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:29:19,286 INFO L82 PathProgramCache]: Analyzing trace with hash 319011, now seen corresponding path program 1 times [2021-03-26 03:29:19,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:29:19,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473123696] [2021-03-26 03:29:19,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:29:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:29:19,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:29:19,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:29:19,304 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 03:29:19,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473123696] [2021-03-26 03:29:19,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:29:19,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:29:19,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465550975] [2021-03-26 03:29:19,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:29:19,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:29:19,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:29:19,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:29:19,306 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 281 [2021-03-26 03:29:19,306 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 141 transitions, 5319 flow. Second operand has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 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 03:29:19,306 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:29:19,306 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 281 [2021-03-26 03:29:19,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:29:19,345 INFO L129 PetriNetUnfolder]: 0/140 cut-off events. [2021-03-26 03:29:19,345 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:19,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2765 conditions, 140 events. 0/140 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 157 event pairs, 0 based on Foata normal form. 70/210 useless extension candidates. Maximal degree in co-relation 0. Up to 70 conditions per place. [2021-03-26 03:29:19,345 INFO L132 encePairwiseOnDemand]: 279/281 looper letters, 0 selfloop transitions, 1 changer transitions 0/140 dead transitions. [2021-03-26 03:29:19,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 140 transitions, 5319 flow [2021-03-26 03:29:19,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:29:19,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:29:19,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 836 transitions. [2021-03-26 03:29:19,346 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9916963226571768 [2021-03-26 03:29:19,346 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 836 transitions. [2021-03-26 03:29:19,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 836 transitions. [2021-03-26 03:29:19,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:29:19,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 836 transitions. [2021-03-26 03:29:19,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 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 03:29:19,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 03:29:19,348 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 03:29:19,348 INFO L185 Difference]: Start difference. First operand has 280 places, 141 transitions, 5319 flow. Second operand 3 states and 836 transitions. [2021-03-26 03:29:19,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 140 transitions, 5319 flow [2021-03-26 03:29:19,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 140 transitions, 627 flow, removed 2346 selfloop flow, removed 0 redundant places. [2021-03-26 03:29:19,442 INFO L241 Difference]: Finished difference. Result has 281 places, 140 transitions, 627 flow [2021-03-26 03:29:19,442 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=627, PETRI_PLACES=281, PETRI_TRANSITIONS=140} [2021-03-26 03:29:19,442 INFO L343 CegarLoopForPetriNet]: 280 programPoint places, 1 predicate places. [2021-03-26 03:29:19,442 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:29:19,442 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 281 places, 140 transitions, 627 flow [2021-03-26 03:29:19,442 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 281 places, 140 transitions, 627 flow [2021-03-26 03:29:19,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 281 places, 140 transitions, 627 flow [2021-03-26 03:29:19,459 INFO L129 PetriNetUnfolder]: 0/140 cut-off events. [2021-03-26 03:29:19,459 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:19,459 INFO L84 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 140 events. 0/140 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 141 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 0. Up to 70 conditions per place. [2021-03-26 03:29:19,461 INFO L142 LiptonReduction]: Number of co-enabled transitions 9522 [2021-03-26 03:29:19,468 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:29:19,469 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:29:19,469 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 27 [2021-03-26 03:29:19,471 INFO L480 AbstractCegarLoop]: Abstraction has has 281 places, 140 transitions, 627 flow [2021-03-26 03:29:19,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 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 03:29:19,472 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:29:19,472 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:29:19,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-03-26 03:29:19,472 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:29:19,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:29:19,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1823164207, now seen corresponding path program 1 times [2021-03-26 03:29:19,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:29:19,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624496534] [2021-03-26 03:29:19,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:29:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:29:19,486 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:29:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:29:19,488 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:29:19,499 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:29:19,500 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:29:19,500 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-03-26 03:29:19,500 WARN L342 ceAbstractionStarter]: 69 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:29:19,500 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 70 thread instances. [2021-03-26 03:29:19,556 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:29:19,556 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:29:19,557 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:29:19,557 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:29:19,557 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:29:19,557 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:29:19,557 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:29:19,557 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:29:19,557 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:29:19,557 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:29:19,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 356 places, 215 transitions, 5610 flow [2021-03-26 03:29:19,627 INFO L129 PetriNetUnfolder]: 0/425 cut-off events. [2021-03-26 03:29:19,628 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:19,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3121 conditions, 425 events. 0/425 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1578 event pairs, 0 based on Foata normal form. 0/354 useless extension candidates. Maximal degree in co-relation 0. Up to 71 conditions per place. [2021-03-26 03:29:19,628 INFO L82 GeneralOperation]: Start removeDead. Operand has 356 places, 215 transitions, 5610 flow [2021-03-26 03:29:19,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 354 places, 213 transitions, 5606 flow [2021-03-26 03:29:19,630 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:29:19,630 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 354 places, 213 transitions, 5606 flow [2021-03-26 03:29:19,630 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 354 places, 213 transitions, 5606 flow [2021-03-26 03:29:19,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 354 places, 213 transitions, 5606 flow [2021-03-26 03:29:19,687 INFO L129 PetriNetUnfolder]: 0/283 cut-off events. [2021-03-26 03:29:19,687 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:19,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2979 conditions, 283 events. 0/283 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 795 event pairs, 0 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 0. Up to 71 conditions per place. [2021-03-26 03:29:19,708 INFO L142 LiptonReduction]: Number of co-enabled transitions 29540 [2021-03-26 03:29:27,812 INFO L154 LiptonReduction]: Checked pairs total: 12215 [2021-03-26 03:29:27,812 INFO L156 LiptonReduction]: Total number of compositions: 70 [2021-03-26 03:29:27,812 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8182 [2021-03-26 03:29:27,815 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:29:27,815 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:27,815 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:29:27,815 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:29:27,815 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:29:27,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:29:27,815 INFO L82 PathProgramCache]: Analyzing trace with hash 328099, now seen corresponding path program 1 times [2021-03-26 03:29:27,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:29:27,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525846244] [2021-03-26 03:29:27,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:29:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:29:27,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:29:27,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:29:27,833 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 03:29:27,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525846244] [2021-03-26 03:29:27,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:29:27,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:29:27,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331570230] [2021-03-26 03:29:27,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:29:27,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:29:27,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:29:27,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:29:27,834 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 285 [2021-03-26 03:29:27,835 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 143 transitions, 5466 flow. Second operand has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 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 03:29:27,835 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:29:27,835 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 285 [2021-03-26 03:29:27,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:29:27,874 INFO L129 PetriNetUnfolder]: 0/142 cut-off events. [2021-03-26 03:29:27,874 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:27,874 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2840 conditions, 142 events. 0/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 152 event pairs, 0 based on Foata normal form. 71/213 useless extension candidates. Maximal degree in co-relation 0. Up to 71 conditions per place. [2021-03-26 03:29:27,875 INFO L132 encePairwiseOnDemand]: 283/285 looper letters, 0 selfloop transitions, 1 changer transitions 0/142 dead transitions. [2021-03-26 03:29:27,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 142 transitions, 5466 flow [2021-03-26 03:29:27,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:29:27,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:29:27,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 848 transitions. [2021-03-26 03:29:27,875 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.991812865497076 [2021-03-26 03:29:27,875 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 848 transitions. [2021-03-26 03:29:27,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 848 transitions. [2021-03-26 03:29:27,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:29:27,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 848 transitions. [2021-03-26 03:29:27,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 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 03:29:27,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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 03:29:27,877 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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 03:29:27,877 INFO L185 Difference]: Start difference. First operand has 284 places, 143 transitions, 5466 flow. Second operand 3 states and 848 transitions. [2021-03-26 03:29:27,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 142 transitions, 5466 flow [2021-03-26 03:29:27,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 142 transitions, 636 flow, removed 2415 selfloop flow, removed 0 redundant places. [2021-03-26 03:29:27,968 INFO L241 Difference]: Finished difference. Result has 285 places, 142 transitions, 636 flow [2021-03-26 03:29:27,968 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=636, PETRI_PLACES=285, PETRI_TRANSITIONS=142} [2021-03-26 03:29:27,968 INFO L343 CegarLoopForPetriNet]: 284 programPoint places, 1 predicate places. [2021-03-26 03:29:27,968 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:29:27,968 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 285 places, 142 transitions, 636 flow [2021-03-26 03:29:27,968 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 285 places, 142 transitions, 636 flow [2021-03-26 03:29:27,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 285 places, 142 transitions, 636 flow [2021-03-26 03:29:27,985 INFO L129 PetriNetUnfolder]: 0/142 cut-off events. [2021-03-26 03:29:27,985 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:27,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 142 events. 0/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 132 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 0. Up to 71 conditions per place. [2021-03-26 03:29:27,988 INFO L142 LiptonReduction]: Number of co-enabled transitions 9800 [2021-03-26 03:29:27,995 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:29:27,995 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:29:27,995 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 27 [2021-03-26 03:29:27,997 INFO L480 AbstractCegarLoop]: Abstraction has has 285 places, 142 transitions, 636 flow [2021-03-26 03:29:27,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 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 03:29:27,998 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:29:27,998 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:29:27,998 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-03-26 03:29:27,998 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:29:27,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:29:27,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1518914513, now seen corresponding path program 1 times [2021-03-26 03:29:27,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:29:27,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393903634] [2021-03-26 03:29:27,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:29:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:29:28,013 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:29:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:29:28,014 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:29:28,024 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:29:28,024 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:29:28,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-03-26 03:29:28,024 WARN L342 ceAbstractionStarter]: 70 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:29:28,024 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 71 thread instances. [2021-03-26 03:29:28,095 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:29:28,096 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:29:28,096 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:29:28,096 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:29:28,096 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:29:28,096 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:29:28,096 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:29:28,096 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:29:28,096 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:29:28,096 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:29:28,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 361 places, 218 transitions, 5761 flow [2021-03-26 03:29:28,168 INFO L129 PetriNetUnfolder]: 0/431 cut-off events. [2021-03-26 03:29:28,168 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:28,168 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3201 conditions, 431 events. 0/431 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1611 event pairs, 0 based on Foata normal form. 0/359 useless extension candidates. Maximal degree in co-relation 0. Up to 72 conditions per place. [2021-03-26 03:29:28,168 INFO L82 GeneralOperation]: Start removeDead. Operand has 361 places, 218 transitions, 5761 flow [2021-03-26 03:29:28,170 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 359 places, 216 transitions, 5757 flow [2021-03-26 03:29:28,170 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:29:28,170 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 359 places, 216 transitions, 5757 flow [2021-03-26 03:29:28,170 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 359 places, 216 transitions, 5757 flow [2021-03-26 03:29:28,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 359 places, 216 transitions, 5757 flow [2021-03-26 03:29:28,229 INFO L129 PetriNetUnfolder]: 0/287 cut-off events. [2021-03-26 03:29:28,229 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:28,230 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3057 conditions, 287 events. 0/287 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 824 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 0. Up to 72 conditions per place. [2021-03-26 03:29:28,252 INFO L142 LiptonReduction]: Number of co-enabled transitions 30388 [2021-03-26 03:29:36,437 INFO L154 LiptonReduction]: Checked pairs total: 12567 [2021-03-26 03:29:36,438 INFO L156 LiptonReduction]: Total number of compositions: 71 [2021-03-26 03:29:36,438 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8268 [2021-03-26 03:29:36,441 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:29:36,441 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:36,441 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:29:36,441 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:29:36,441 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:29:36,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:29:36,441 INFO L82 PathProgramCache]: Analyzing trace with hash 337315, now seen corresponding path program 1 times [2021-03-26 03:29:36,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:29:36,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426501863] [2021-03-26 03:29:36,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:29:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:29:36,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:29:36,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:29:36,459 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 03:29:36,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426501863] [2021-03-26 03:29:36,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:29:36,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:29:36,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643196360] [2021-03-26 03:29:36,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:29:36,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:29:36,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:29:36,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:29:36,460 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 289 [2021-03-26 03:29:36,461 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 145 transitions, 5615 flow. Second operand has 3 states, 3 states have (on average 286.6666666666667) internal successors, (860), 3 states have internal predecessors, (860), 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 03:29:36,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:29:36,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 289 [2021-03-26 03:29:36,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:29:36,502 INFO L129 PetriNetUnfolder]: 0/144 cut-off events. [2021-03-26 03:29:36,503 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:36,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2916 conditions, 144 events. 0/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 135 event pairs, 0 based on Foata normal form. 72/216 useless extension candidates. Maximal degree in co-relation 0. Up to 72 conditions per place. [2021-03-26 03:29:36,503 INFO L132 encePairwiseOnDemand]: 287/289 looper letters, 0 selfloop transitions, 1 changer transitions 0/144 dead transitions. [2021-03-26 03:29:36,503 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 144 transitions, 5615 flow [2021-03-26 03:29:36,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:29:36,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:29:36,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 860 transitions. [2021-03-26 03:29:36,504 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9919261822376009 [2021-03-26 03:29:36,504 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 860 transitions. [2021-03-26 03:29:36,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 860 transitions. [2021-03-26 03:29:36,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:29:36,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 860 transitions. [2021-03-26 03:29:36,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 286.6666666666667) internal successors, (860), 3 states have internal predecessors, (860), 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 03:29:36,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 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 03:29:36,506 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 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 03:29:36,506 INFO L185 Difference]: Start difference. First operand has 288 places, 145 transitions, 5615 flow. Second operand 3 states and 860 transitions. [2021-03-26 03:29:36,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 144 transitions, 5615 flow [2021-03-26 03:29:36,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 144 transitions, 645 flow, removed 2485 selfloop flow, removed 0 redundant places. [2021-03-26 03:29:36,594 INFO L241 Difference]: Finished difference. Result has 289 places, 144 transitions, 645 flow [2021-03-26 03:29:36,594 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=645, PETRI_PLACES=289, PETRI_TRANSITIONS=144} [2021-03-26 03:29:36,594 INFO L343 CegarLoopForPetriNet]: 288 programPoint places, 1 predicate places. [2021-03-26 03:29:36,594 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:29:36,594 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 289 places, 144 transitions, 645 flow [2021-03-26 03:29:36,595 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 289 places, 144 transitions, 645 flow [2021-03-26 03:29:36,595 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 289 places, 144 transitions, 645 flow [2021-03-26 03:29:36,612 INFO L129 PetriNetUnfolder]: 0/144 cut-off events. [2021-03-26 03:29:36,612 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:36,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 144 events. 0/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 143 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 0. Up to 72 conditions per place. [2021-03-26 03:29:36,615 INFO L142 LiptonReduction]: Number of co-enabled transitions 10082 [2021-03-26 03:29:36,623 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:29:36,623 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:29:36,623 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-03-26 03:29:36,626 INFO L480 AbstractCegarLoop]: Abstraction has has 289 places, 144 transitions, 645 flow [2021-03-26 03:29:36,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 286.6666666666667) internal successors, (860), 3 states have internal predecessors, (860), 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 03:29:36,626 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:29:36,626 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:29:36,626 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-03-26 03:29:36,627 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:29:36,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:29:36,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1746041226, now seen corresponding path program 1 times [2021-03-26 03:29:36,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:29:36,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644425632] [2021-03-26 03:29:36,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:29:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:29:36,642 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:29:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:29:36,643 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:29:36,653 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:29:36,653 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:29:36,653 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-03-26 03:29:36,653 WARN L342 ceAbstractionStarter]: 71 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:29:36,653 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 72 thread instances. [2021-03-26 03:29:36,720 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:29:36,720 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:29:36,720 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:29:36,720 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:29:36,720 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:29:36,720 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:29:36,720 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:29:36,720 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:29:36,720 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:29:36,721 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:29:36,722 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 366 places, 221 transitions, 5914 flow [2021-03-26 03:29:36,797 INFO L129 PetriNetUnfolder]: 0/437 cut-off events. [2021-03-26 03:29:36,798 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:36,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3282 conditions, 437 events. 0/437 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1586 event pairs, 0 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 0. Up to 73 conditions per place. [2021-03-26 03:29:36,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 366 places, 221 transitions, 5914 flow [2021-03-26 03:29:36,800 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 364 places, 219 transitions, 5910 flow [2021-03-26 03:29:36,800 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:29:36,800 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 364 places, 219 transitions, 5910 flow [2021-03-26 03:29:36,800 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 364 places, 219 transitions, 5910 flow [2021-03-26 03:29:36,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 364 places, 219 transitions, 5910 flow [2021-03-26 03:29:36,863 INFO L129 PetriNetUnfolder]: 0/291 cut-off events. [2021-03-26 03:29:36,863 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:36,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3136 conditions, 291 events. 0/291 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 904 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 0. Up to 73 conditions per place. [2021-03-26 03:29:36,886 INFO L142 LiptonReduction]: Number of co-enabled transitions 31248 [2021-03-26 03:29:45,582 INFO L154 LiptonReduction]: Checked pairs total: 12924 [2021-03-26 03:29:45,582 INFO L156 LiptonReduction]: Total number of compositions: 72 [2021-03-26 03:29:45,582 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8782 [2021-03-26 03:29:45,584 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:29:45,584 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:45,584 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:29:45,584 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:29:45,584 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:29:45,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:29:45,587 INFO L82 PathProgramCache]: Analyzing trace with hash 346659, now seen corresponding path program 1 times [2021-03-26 03:29:45,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:29:45,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832055838] [2021-03-26 03:29:45,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:29:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:29:45,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:29:45,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:29:45,605 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 03:29:45,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832055838] [2021-03-26 03:29:45,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:29:45,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:29:45,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622855463] [2021-03-26 03:29:45,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:29:45,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:29:45,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:29:45,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:29:45,606 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 293 [2021-03-26 03:29:45,606 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 147 transitions, 5766 flow. Second operand has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 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 03:29:45,606 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:29:45,606 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 293 [2021-03-26 03:29:45,606 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:29:45,648 INFO L129 PetriNetUnfolder]: 0/146 cut-off events. [2021-03-26 03:29:45,648 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:45,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2993 conditions, 146 events. 0/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 170 event pairs, 0 based on Foata normal form. 73/219 useless extension candidates. Maximal degree in co-relation 0. Up to 73 conditions per place. [2021-03-26 03:29:45,648 INFO L132 encePairwiseOnDemand]: 291/293 looper letters, 0 selfloop transitions, 1 changer transitions 0/146 dead transitions. [2021-03-26 03:29:45,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 146 transitions, 5766 flow [2021-03-26 03:29:45,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:29:45,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:29:45,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 872 transitions. [2021-03-26 03:29:45,649 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9920364050056882 [2021-03-26 03:29:45,649 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 872 transitions. [2021-03-26 03:29:45,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 872 transitions. [2021-03-26 03:29:45,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:29:45,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 872 transitions. [2021-03-26 03:29:45,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 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 03:29:45,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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 03:29:45,650 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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 03:29:45,650 INFO L185 Difference]: Start difference. First operand has 292 places, 147 transitions, 5766 flow. Second operand 3 states and 872 transitions. [2021-03-26 03:29:45,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 146 transitions, 5766 flow [2021-03-26 03:29:45,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 146 transitions, 654 flow, removed 2556 selfloop flow, removed 0 redundant places. [2021-03-26 03:29:45,740 INFO L241 Difference]: Finished difference. Result has 293 places, 146 transitions, 654 flow [2021-03-26 03:29:45,740 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=654, PETRI_PLACES=293, PETRI_TRANSITIONS=146} [2021-03-26 03:29:45,740 INFO L343 CegarLoopForPetriNet]: 292 programPoint places, 1 predicate places. [2021-03-26 03:29:45,740 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:29:45,740 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 293 places, 146 transitions, 654 flow [2021-03-26 03:29:45,740 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 293 places, 146 transitions, 654 flow [2021-03-26 03:29:45,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 293 places, 146 transitions, 654 flow [2021-03-26 03:29:45,757 INFO L129 PetriNetUnfolder]: 0/146 cut-off events. [2021-03-26 03:29:45,757 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:45,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 146 events. 0/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 126 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 0. Up to 73 conditions per place. [2021-03-26 03:29:45,760 INFO L142 LiptonReduction]: Number of co-enabled transitions 10368 [2021-03-26 03:29:45,767 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:29:45,767 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:29:45,767 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 27 [2021-03-26 03:29:45,769 INFO L480 AbstractCegarLoop]: Abstraction has has 293 places, 146 transitions, 654 flow [2021-03-26 03:29:45,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 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 03:29:45,770 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:29:45,770 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:29:45,770 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-03-26 03:29:45,770 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:29:45,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:29:45,770 INFO L82 PathProgramCache]: Analyzing trace with hash 748644244, now seen corresponding path program 1 times [2021-03-26 03:29:45,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:29:45,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956918149] [2021-03-26 03:29:45,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:29:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:29:45,784 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:29:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:29:45,785 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:29:45,795 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:29:45,795 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:29:45,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-03-26 03:29:45,796 WARN L342 ceAbstractionStarter]: 72 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:29:45,796 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 73 thread instances. [2021-03-26 03:29:45,860 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:29:45,860 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:29:45,861 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:29:45,861 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:29:45,861 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:29:45,861 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:29:45,861 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:29:45,861 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:29:45,861 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:29:45,861 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:29:45,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 371 places, 224 transitions, 6069 flow [2021-03-26 03:29:45,937 INFO L129 PetriNetUnfolder]: 0/443 cut-off events. [2021-03-26 03:29:45,937 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:45,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3364 conditions, 443 events. 0/443 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1668 event pairs, 0 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 0. Up to 74 conditions per place. [2021-03-26 03:29:45,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 371 places, 224 transitions, 6069 flow [2021-03-26 03:29:45,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 369 places, 222 transitions, 6065 flow [2021-03-26 03:29:45,940 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:29:45,940 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 369 places, 222 transitions, 6065 flow [2021-03-26 03:29:45,940 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 369 places, 222 transitions, 6065 flow [2021-03-26 03:29:45,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 369 places, 222 transitions, 6065 flow [2021-03-26 03:29:46,002 INFO L129 PetriNetUnfolder]: 0/295 cut-off events. [2021-03-26 03:29:46,002 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:46,002 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3216 conditions, 295 events. 0/295 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 787 event pairs, 0 based on Foata normal form. 0/295 useless extension candidates. Maximal degree in co-relation 0. Up to 74 conditions per place. [2021-03-26 03:29:46,025 INFO L142 LiptonReduction]: Number of co-enabled transitions 32120 [2021-03-26 03:29:55,124 INFO L154 LiptonReduction]: Checked pairs total: 13286 [2021-03-26 03:29:55,124 INFO L156 LiptonReduction]: Total number of compositions: 73 [2021-03-26 03:29:55,124 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9184 [2021-03-26 03:29:55,127 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:29:55,127 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:55,127 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:29:55,127 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:29:55,127 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:29:55,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:29:55,127 INFO L82 PathProgramCache]: Analyzing trace with hash 356131, now seen corresponding path program 1 times [2021-03-26 03:29:55,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:29:55,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409670559] [2021-03-26 03:29:55,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:29:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:29:55,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:29:55,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:29:55,145 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 03:29:55,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409670559] [2021-03-26 03:29:55,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:29:55,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:29:55,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838732680] [2021-03-26 03:29:55,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:29:55,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:29:55,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:29:55,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:29:55,146 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 297 [2021-03-26 03:29:55,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 149 transitions, 5919 flow. Second operand has 3 states, 3 states have (on average 294.6666666666667) internal successors, (884), 3 states have internal predecessors, (884), 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 03:29:55,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:29:55,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 297 [2021-03-26 03:29:55,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:29:55,192 INFO L129 PetriNetUnfolder]: 0/148 cut-off events. [2021-03-26 03:29:55,192 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:55,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3071 conditions, 148 events. 0/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 141 event pairs, 0 based on Foata normal form. 74/222 useless extension candidates. Maximal degree in co-relation 0. Up to 74 conditions per place. [2021-03-26 03:29:55,193 INFO L132 encePairwiseOnDemand]: 295/297 looper letters, 0 selfloop transitions, 1 changer transitions 0/148 dead transitions. [2021-03-26 03:29:55,193 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 148 transitions, 5919 flow [2021-03-26 03:29:55,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:29:55,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:29:55,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 884 transitions. [2021-03-26 03:29:55,193 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9921436588103255 [2021-03-26 03:29:55,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 884 transitions. [2021-03-26 03:29:55,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 884 transitions. [2021-03-26 03:29:55,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:29:55,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 884 transitions. [2021-03-26 03:29:55,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.6666666666667) internal successors, (884), 3 states have internal predecessors, (884), 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 03:29:55,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 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 03:29:55,195 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 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 03:29:55,195 INFO L185 Difference]: Start difference. First operand has 296 places, 149 transitions, 5919 flow. Second operand 3 states and 884 transitions. [2021-03-26 03:29:55,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 148 transitions, 5919 flow [2021-03-26 03:29:55,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 148 transitions, 663 flow, removed 2628 selfloop flow, removed 0 redundant places. [2021-03-26 03:29:55,293 INFO L241 Difference]: Finished difference. Result has 297 places, 148 transitions, 663 flow [2021-03-26 03:29:55,293 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=663, PETRI_PLACES=297, PETRI_TRANSITIONS=148} [2021-03-26 03:29:55,293 INFO L343 CegarLoopForPetriNet]: 296 programPoint places, 1 predicate places. [2021-03-26 03:29:55,293 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:29:55,293 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 297 places, 148 transitions, 663 flow [2021-03-26 03:29:55,293 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 297 places, 148 transitions, 663 flow [2021-03-26 03:29:55,294 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 297 places, 148 transitions, 663 flow [2021-03-26 03:29:55,312 INFO L129 PetriNetUnfolder]: 0/148 cut-off events. [2021-03-26 03:29:55,312 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:55,312 INFO L84 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 148 events. 0/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 135 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 0. Up to 74 conditions per place. [2021-03-26 03:29:55,315 INFO L142 LiptonReduction]: Number of co-enabled transitions 10658 [2021-03-26 03:29:55,323 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:29:55,324 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:29:55,324 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 31 [2021-03-26 03:29:55,327 INFO L480 AbstractCegarLoop]: Abstraction has has 297 places, 148 transitions, 663 flow [2021-03-26 03:29:55,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 294.6666666666667) internal successors, (884), 3 states have internal predecessors, (884), 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 03:29:55,327 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:29:55,327 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:29:55,327 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-03-26 03:29:55,327 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:29:55,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:29:55,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1012633611, now seen corresponding path program 1 times [2021-03-26 03:29:55,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:29:55,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181847413] [2021-03-26 03:29:55,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:29:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:29:55,343 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:29:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:29:55,344 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:29:55,355 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:29:55,355 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:29:55,355 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-03-26 03:29:55,355 WARN L342 ceAbstractionStarter]: 73 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:29:55,355 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 74 thread instances. [2021-03-26 03:29:55,419 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:29:55,419 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:29:55,420 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:29:55,420 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:29:55,420 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:29:55,420 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:29:55,420 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:29:55,420 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:29:55,420 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:29:55,420 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:29:55,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 376 places, 227 transitions, 6226 flow [2021-03-26 03:29:55,501 INFO L129 PetriNetUnfolder]: 0/449 cut-off events. [2021-03-26 03:29:55,501 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:55,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3447 conditions, 449 events. 0/449 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1667 event pairs, 0 based on Foata normal form. 0/374 useless extension candidates. Maximal degree in co-relation 0. Up to 75 conditions per place. [2021-03-26 03:29:55,501 INFO L82 GeneralOperation]: Start removeDead. Operand has 376 places, 227 transitions, 6226 flow [2021-03-26 03:29:55,503 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 225 transitions, 6222 flow [2021-03-26 03:29:55,504 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:29:55,504 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 374 places, 225 transitions, 6222 flow [2021-03-26 03:29:55,504 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 374 places, 225 transitions, 6222 flow [2021-03-26 03:29:55,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 374 places, 225 transitions, 6222 flow [2021-03-26 03:29:55,572 INFO L129 PetriNetUnfolder]: 0/299 cut-off events. [2021-03-26 03:29:55,572 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:29:55,572 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3297 conditions, 299 events. 0/299 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 795 event pairs, 0 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 0. Up to 75 conditions per place. [2021-03-26 03:29:55,597 INFO L142 LiptonReduction]: Number of co-enabled transitions 33004 [2021-03-26 03:30:05,981 INFO L154 LiptonReduction]: Checked pairs total: 13653 [2021-03-26 03:30:05,982 INFO L156 LiptonReduction]: Total number of compositions: 74 [2021-03-26 03:30:05,982 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10478 [2021-03-26 03:30:05,984 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:30:05,984 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:05,984 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:30:05,984 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:30:05,985 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:30:05,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:30:05,985 INFO L82 PathProgramCache]: Analyzing trace with hash 365731, now seen corresponding path program 1 times [2021-03-26 03:30:05,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:30:05,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657771488] [2021-03-26 03:30:05,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:30:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:30:06,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:30:06,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:30:06,005 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 03:30:06,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657771488] [2021-03-26 03:30:06,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:30:06,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:30:06,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561442204] [2021-03-26 03:30:06,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:30:06,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:30:06,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:30:06,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:30:06,007 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 301 [2021-03-26 03:30:06,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 151 transitions, 6074 flow. Second operand has 3 states, 3 states have (on average 298.6666666666667) internal successors, (896), 3 states have internal predecessors, (896), 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 03:30:06,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:30:06,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 301 [2021-03-26 03:30:06,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:30:06,055 INFO L129 PetriNetUnfolder]: 0/150 cut-off events. [2021-03-26 03:30:06,055 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:06,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3150 conditions, 150 events. 0/150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 170 event pairs, 0 based on Foata normal form. 75/225 useless extension candidates. Maximal degree in co-relation 0. Up to 75 conditions per place. [2021-03-26 03:30:06,056 INFO L132 encePairwiseOnDemand]: 299/301 looper letters, 0 selfloop transitions, 1 changer transitions 0/150 dead transitions. [2021-03-26 03:30:06,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 150 transitions, 6074 flow [2021-03-26 03:30:06,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:30:06,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:30:06,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 896 transitions. [2021-03-26 03:30:06,056 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9922480620155039 [2021-03-26 03:30:06,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 896 transitions. [2021-03-26 03:30:06,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 896 transitions. [2021-03-26 03:30:06,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:30:06,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 896 transitions. [2021-03-26 03:30:06,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 298.6666666666667) internal successors, (896), 3 states have internal predecessors, (896), 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 03:30:06,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 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 03:30:06,058 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 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 03:30:06,058 INFO L185 Difference]: Start difference. First operand has 300 places, 151 transitions, 6074 flow. Second operand 3 states and 896 transitions. [2021-03-26 03:30:06,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 150 transitions, 6074 flow [2021-03-26 03:30:06,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 150 transitions, 672 flow, removed 2701 selfloop flow, removed 0 redundant places. [2021-03-26 03:30:06,157 INFO L241 Difference]: Finished difference. Result has 301 places, 150 transitions, 672 flow [2021-03-26 03:30:06,157 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=672, PETRI_PLACES=301, PETRI_TRANSITIONS=150} [2021-03-26 03:30:06,157 INFO L343 CegarLoopForPetriNet]: 300 programPoint places, 1 predicate places. [2021-03-26 03:30:06,157 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:30:06,157 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 301 places, 150 transitions, 672 flow [2021-03-26 03:30:06,158 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 301 places, 150 transitions, 672 flow [2021-03-26 03:30:06,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 301 places, 150 transitions, 672 flow [2021-03-26 03:30:06,177 INFO L129 PetriNetUnfolder]: 0/150 cut-off events. [2021-03-26 03:30:06,178 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:06,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 150 events. 0/150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 154 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 0. Up to 75 conditions per place. [2021-03-26 03:30:06,181 INFO L142 LiptonReduction]: Number of co-enabled transitions 10952 [2021-03-26 03:30:06,190 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:30:06,190 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:30:06,190 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 33 [2021-03-26 03:30:06,193 INFO L480 AbstractCegarLoop]: Abstraction has has 301 places, 150 transitions, 672 flow [2021-03-26 03:30:06,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 298.6666666666667) internal successors, (896), 3 states have internal predecessors, (896), 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 03:30:06,193 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:30:06,193 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:30:06,193 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-03-26 03:30:06,193 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:30:06,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:30:06,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1976601769, now seen corresponding path program 1 times [2021-03-26 03:30:06,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:30:06,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889907802] [2021-03-26 03:30:06,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:30:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:30:06,209 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:30:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:30:06,211 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:30:06,222 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:30:06,223 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:30:06,223 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-03-26 03:30:06,223 WARN L342 ceAbstractionStarter]: 74 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:30:06,223 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 75 thread instances. [2021-03-26 03:30:06,308 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:30:06,308 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:30:06,309 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:30:06,309 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:30:06,309 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:30:06,309 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:30:06,309 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:30:06,309 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:30:06,309 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:30:06,309 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:30:06,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 381 places, 230 transitions, 6385 flow [2021-03-26 03:30:06,396 INFO L129 PetriNetUnfolder]: 0/455 cut-off events. [2021-03-26 03:30:06,396 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:06,396 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3531 conditions, 455 events. 0/455 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1673 event pairs, 0 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 0. Up to 76 conditions per place. [2021-03-26 03:30:06,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 381 places, 230 transitions, 6385 flow [2021-03-26 03:30:06,399 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 379 places, 228 transitions, 6381 flow [2021-03-26 03:30:06,399 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:30:06,399 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 379 places, 228 transitions, 6381 flow [2021-03-26 03:30:06,399 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 379 places, 228 transitions, 6381 flow [2021-03-26 03:30:06,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 379 places, 228 transitions, 6381 flow [2021-03-26 03:30:06,471 INFO L129 PetriNetUnfolder]: 0/303 cut-off events. [2021-03-26 03:30:06,472 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:06,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3379 conditions, 303 events. 0/303 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 950 event pairs, 0 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 0. Up to 76 conditions per place. [2021-03-26 03:30:06,499 INFO L142 LiptonReduction]: Number of co-enabled transitions 33900 [2021-03-26 03:30:17,691 INFO L154 LiptonReduction]: Checked pairs total: 14025 [2021-03-26 03:30:17,691 INFO L156 LiptonReduction]: Total number of compositions: 75 [2021-03-26 03:30:17,692 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11293 [2021-03-26 03:30:17,694 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:30:17,694 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:17,694 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:30:17,694 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:30:17,694 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:30:17,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:30:17,694 INFO L82 PathProgramCache]: Analyzing trace with hash 375459, now seen corresponding path program 1 times [2021-03-26 03:30:17,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:30:17,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029295747] [2021-03-26 03:30:17,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:30:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:30:17,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:30:17,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:30:17,713 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 03:30:17,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029295747] [2021-03-26 03:30:17,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:30:17,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:30:17,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517833621] [2021-03-26 03:30:17,713 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:30:17,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:30:17,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:30:17,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:30:17,714 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 305 [2021-03-26 03:30:17,715 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 153 transitions, 6231 flow. Second operand has 3 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 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 03:30:17,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:30:17,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 305 [2021-03-26 03:30:17,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:30:17,763 INFO L129 PetriNetUnfolder]: 0/152 cut-off events. [2021-03-26 03:30:17,763 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:17,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3230 conditions, 152 events. 0/152 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 147 event pairs, 0 based on Foata normal form. 76/228 useless extension candidates. Maximal degree in co-relation 0. Up to 76 conditions per place. [2021-03-26 03:30:17,764 INFO L132 encePairwiseOnDemand]: 303/305 looper letters, 0 selfloop transitions, 1 changer transitions 0/152 dead transitions. [2021-03-26 03:30:17,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 152 transitions, 6231 flow [2021-03-26 03:30:17,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:30:17,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:30:17,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 908 transitions. [2021-03-26 03:30:17,764 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9923497267759562 [2021-03-26 03:30:17,764 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 908 transitions. [2021-03-26 03:30:17,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 908 transitions. [2021-03-26 03:30:17,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:30:17,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 908 transitions. [2021-03-26 03:30:17,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 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 03:30:17,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 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 03:30:17,766 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 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 03:30:17,766 INFO L185 Difference]: Start difference. First operand has 304 places, 153 transitions, 6231 flow. Second operand 3 states and 908 transitions. [2021-03-26 03:30:17,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 152 transitions, 6231 flow [2021-03-26 03:30:17,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 152 transitions, 681 flow, removed 2775 selfloop flow, removed 0 redundant places. [2021-03-26 03:30:17,864 INFO L241 Difference]: Finished difference. Result has 305 places, 152 transitions, 681 flow [2021-03-26 03:30:17,864 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=681, PETRI_PLACES=305, PETRI_TRANSITIONS=152} [2021-03-26 03:30:17,864 INFO L343 CegarLoopForPetriNet]: 304 programPoint places, 1 predicate places. [2021-03-26 03:30:17,864 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:30:17,864 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 305 places, 152 transitions, 681 flow [2021-03-26 03:30:17,865 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 305 places, 152 transitions, 681 flow [2021-03-26 03:30:17,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 305 places, 152 transitions, 681 flow [2021-03-26 03:30:17,884 INFO L129 PetriNetUnfolder]: 0/152 cut-off events. [2021-03-26 03:30:17,884 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:17,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 152 events. 0/152 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 143 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 0. Up to 76 conditions per place. [2021-03-26 03:30:17,888 INFO L142 LiptonReduction]: Number of co-enabled transitions 11250 [2021-03-26 03:30:17,896 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:30:17,896 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:30:17,896 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-03-26 03:30:17,899 INFO L480 AbstractCegarLoop]: Abstraction has has 305 places, 152 transitions, 681 flow [2021-03-26 03:30:17,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 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 03:30:17,899 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:30:17,899 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:30:17,899 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-03-26 03:30:17,899 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:30:17,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:30:17,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1188060048, now seen corresponding path program 1 times [2021-03-26 03:30:17,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:30:17,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144532691] [2021-03-26 03:30:17,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:30:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:30:17,914 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:30:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:30:17,916 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:30:17,927 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:30:17,927 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:30:17,927 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-03-26 03:30:17,927 WARN L342 ceAbstractionStarter]: 75 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:30:17,927 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 76 thread instances. [2021-03-26 03:30:18,004 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:30:18,005 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:30:18,005 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:30:18,005 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:30:18,005 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:30:18,005 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:30:18,005 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:30:18,005 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:30:18,005 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:30:18,005 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:30:18,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 386 places, 233 transitions, 6546 flow [2021-03-26 03:30:18,097 INFO L129 PetriNetUnfolder]: 0/461 cut-off events. [2021-03-26 03:30:18,097 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:18,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3616 conditions, 461 events. 0/461 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1670 event pairs, 0 based on Foata normal form. 0/384 useless extension candidates. Maximal degree in co-relation 0. Up to 77 conditions per place. [2021-03-26 03:30:18,097 INFO L82 GeneralOperation]: Start removeDead. Operand has 386 places, 233 transitions, 6546 flow [2021-03-26 03:30:18,100 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 384 places, 231 transitions, 6542 flow [2021-03-26 03:30:18,100 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:30:18,100 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 384 places, 231 transitions, 6542 flow [2021-03-26 03:30:18,100 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 384 places, 231 transitions, 6542 flow [2021-03-26 03:30:18,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 384 places, 231 transitions, 6542 flow [2021-03-26 03:30:18,171 INFO L129 PetriNetUnfolder]: 0/307 cut-off events. [2021-03-26 03:30:18,172 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:18,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3462 conditions, 307 events. 0/307 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 992 event pairs, 0 based on Foata normal form. 0/307 useless extension candidates. Maximal degree in co-relation 0. Up to 77 conditions per place. [2021-03-26 03:30:18,327 INFO L142 LiptonReduction]: Number of co-enabled transitions 34808 [2021-03-26 03:30:29,430 INFO L154 LiptonReduction]: Checked pairs total: 14402 [2021-03-26 03:30:29,430 INFO L156 LiptonReduction]: Total number of compositions: 76 [2021-03-26 03:30:29,430 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11330 [2021-03-26 03:30:29,433 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:30:29,433 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:29,433 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:30:29,433 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:30:29,433 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:30:29,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:30:29,433 INFO L82 PathProgramCache]: Analyzing trace with hash 385315, now seen corresponding path program 1 times [2021-03-26 03:30:29,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:30:29,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488805629] [2021-03-26 03:30:29,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:30:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:30:29,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:30:29,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:30:29,451 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 03:30:29,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488805629] [2021-03-26 03:30:29,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:30:29,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:30:29,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829708214] [2021-03-26 03:30:29,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:30:29,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:30:29,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:30:29,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:30:29,452 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 309 [2021-03-26 03:30:29,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 155 transitions, 6390 flow. Second operand has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 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 03:30:29,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:30:29,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 309 [2021-03-26 03:30:29,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:30:29,500 INFO L129 PetriNetUnfolder]: 0/154 cut-off events. [2021-03-26 03:30:29,501 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:29,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3311 conditions, 154 events. 0/154 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 124 event pairs, 0 based on Foata normal form. 77/231 useless extension candidates. Maximal degree in co-relation 0. Up to 77 conditions per place. [2021-03-26 03:30:29,501 INFO L132 encePairwiseOnDemand]: 307/309 looper letters, 0 selfloop transitions, 1 changer transitions 0/154 dead transitions. [2021-03-26 03:30:29,501 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 154 transitions, 6390 flow [2021-03-26 03:30:29,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:30:29,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:30:29,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 920 transitions. [2021-03-26 03:30:29,502 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9924487594390508 [2021-03-26 03:30:29,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 920 transitions. [2021-03-26 03:30:29,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 920 transitions. [2021-03-26 03:30:29,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:30:29,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 920 transitions. [2021-03-26 03:30:29,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 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 03:30:29,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 03:30:29,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 03:30:29,503 INFO L185 Difference]: Start difference. First operand has 308 places, 155 transitions, 6390 flow. Second operand 3 states and 920 transitions. [2021-03-26 03:30:29,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 154 transitions, 6390 flow [2021-03-26 03:30:29,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 154 transitions, 690 flow, removed 2850 selfloop flow, removed 0 redundant places. [2021-03-26 03:30:29,603 INFO L241 Difference]: Finished difference. Result has 309 places, 154 transitions, 690 flow [2021-03-26 03:30:29,603 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=690, PETRI_PLACES=309, PETRI_TRANSITIONS=154} [2021-03-26 03:30:29,603 INFO L343 CegarLoopForPetriNet]: 308 programPoint places, 1 predicate places. [2021-03-26 03:30:29,603 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:30:29,603 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 309 places, 154 transitions, 690 flow [2021-03-26 03:30:29,603 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 309 places, 154 transitions, 690 flow [2021-03-26 03:30:29,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 309 places, 154 transitions, 690 flow [2021-03-26 03:30:29,622 INFO L129 PetriNetUnfolder]: 0/154 cut-off events. [2021-03-26 03:30:29,622 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:29,622 INFO L84 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 154 events. 0/154 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 158 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 0. Up to 77 conditions per place. [2021-03-26 03:30:29,626 INFO L142 LiptonReduction]: Number of co-enabled transitions 11552 [2021-03-26 03:30:29,633 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:30:29,633 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:30:29,633 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 30 [2021-03-26 03:30:29,636 INFO L480 AbstractCegarLoop]: Abstraction has has 309 places, 154 transitions, 690 flow [2021-03-26 03:30:29,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 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 03:30:29,636 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:30:29,636 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:30:29,637 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-03-26 03:30:29,637 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:30:29,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:30:29,637 INFO L82 PathProgramCache]: Analyzing trace with hash 795407642, now seen corresponding path program 1 times [2021-03-26 03:30:29,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:30:29,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410774419] [2021-03-26 03:30:29,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:30:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:30:29,651 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:30:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:30:29,653 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:30:29,665 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:30:29,665 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:30:29,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-03-26 03:30:29,665 WARN L342 ceAbstractionStarter]: 76 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:30:29,665 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 77 thread instances. [2021-03-26 03:30:29,739 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:30:29,740 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:30:29,740 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:30:29,740 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:30:29,740 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:30:29,740 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:30:29,740 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:30:29,740 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:30:29,740 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:30:29,740 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:30:29,742 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 391 places, 236 transitions, 6709 flow [2021-03-26 03:30:29,827 INFO L129 PetriNetUnfolder]: 0/467 cut-off events. [2021-03-26 03:30:29,828 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:29,828 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3702 conditions, 467 events. 0/467 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1773 event pairs, 0 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 0. Up to 78 conditions per place. [2021-03-26 03:30:29,828 INFO L82 GeneralOperation]: Start removeDead. Operand has 391 places, 236 transitions, 6709 flow [2021-03-26 03:30:29,830 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 389 places, 234 transitions, 6705 flow [2021-03-26 03:30:29,830 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:30:29,830 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 389 places, 234 transitions, 6705 flow [2021-03-26 03:30:29,830 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 389 places, 234 transitions, 6705 flow [2021-03-26 03:30:29,832 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 389 places, 234 transitions, 6705 flow [2021-03-26 03:30:29,902 INFO L129 PetriNetUnfolder]: 0/311 cut-off events. [2021-03-26 03:30:29,902 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:29,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3546 conditions, 311 events. 0/311 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 961 event pairs, 0 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 0. Up to 78 conditions per place. [2021-03-26 03:30:29,930 INFO L142 LiptonReduction]: Number of co-enabled transitions 35728 [2021-03-26 03:30:41,903 INFO L154 LiptonReduction]: Checked pairs total: 14784 [2021-03-26 03:30:41,904 INFO L156 LiptonReduction]: Total number of compositions: 77 [2021-03-26 03:30:41,904 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12074 [2021-03-26 03:30:41,906 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:30:41,906 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:41,906 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:30:41,906 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:30:41,907 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:30:41,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:30:41,907 INFO L82 PathProgramCache]: Analyzing trace with hash 395299, now seen corresponding path program 1 times [2021-03-26 03:30:41,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:30:41,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267014353] [2021-03-26 03:30:41,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:30:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:30:41,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:30:41,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:30:41,927 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 03:30:41,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267014353] [2021-03-26 03:30:41,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:30:41,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:30:41,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918786218] [2021-03-26 03:30:41,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:30:41,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:30:41,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:30:41,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:30:41,928 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 313 [2021-03-26 03:30:41,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 157 transitions, 6551 flow. Second operand has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 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 03:30:41,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:30:41,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 313 [2021-03-26 03:30:41,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:30:41,978 INFO L129 PetriNetUnfolder]: 0/156 cut-off events. [2021-03-26 03:30:41,979 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:41,979 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3393 conditions, 156 events. 0/156 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 145 event pairs, 0 based on Foata normal form. 78/234 useless extension candidates. Maximal degree in co-relation 0. Up to 78 conditions per place. [2021-03-26 03:30:41,979 INFO L132 encePairwiseOnDemand]: 311/313 looper letters, 0 selfloop transitions, 1 changer transitions 0/156 dead transitions. [2021-03-26 03:30:41,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 156 transitions, 6551 flow [2021-03-26 03:30:41,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:30:41,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:30:41,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 932 transitions. [2021-03-26 03:30:41,980 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9925452609158679 [2021-03-26 03:30:41,980 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 932 transitions. [2021-03-26 03:30:41,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 932 transitions. [2021-03-26 03:30:41,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:30:41,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 932 transitions. [2021-03-26 03:30:41,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 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 03:30:41,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 313.0) internal successors, (1252), 4 states have internal predecessors, (1252), 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 03:30:41,981 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 313.0) internal successors, (1252), 4 states have internal predecessors, (1252), 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 03:30:41,981 INFO L185 Difference]: Start difference. First operand has 312 places, 157 transitions, 6551 flow. Second operand 3 states and 932 transitions. [2021-03-26 03:30:41,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 156 transitions, 6551 flow [2021-03-26 03:30:42,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 156 transitions, 699 flow, removed 2926 selfloop flow, removed 0 redundant places. [2021-03-26 03:30:42,082 INFO L241 Difference]: Finished difference. Result has 313 places, 156 transitions, 699 flow [2021-03-26 03:30:42,082 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=699, PETRI_PLACES=313, PETRI_TRANSITIONS=156} [2021-03-26 03:30:42,082 INFO L343 CegarLoopForPetriNet]: 312 programPoint places, 1 predicate places. [2021-03-26 03:30:42,082 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:30:42,082 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 313 places, 156 transitions, 699 flow [2021-03-26 03:30:42,083 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 313 places, 156 transitions, 699 flow [2021-03-26 03:30:42,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 313 places, 156 transitions, 699 flow [2021-03-26 03:30:42,103 INFO L129 PetriNetUnfolder]: 0/156 cut-off events. [2021-03-26 03:30:42,104 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:42,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 156 events. 0/156 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 175 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 0. Up to 78 conditions per place. [2021-03-26 03:30:42,107 INFO L142 LiptonReduction]: Number of co-enabled transitions 11858 [2021-03-26 03:30:42,115 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:30:42,115 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:30:42,115 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 33 [2021-03-26 03:30:42,118 INFO L480 AbstractCegarLoop]: Abstraction has has 313 places, 156 transitions, 699 flow [2021-03-26 03:30:42,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 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 03:30:42,118 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:30:42,118 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:30:42,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-03-26 03:30:42,118 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:30:42,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:30:42,118 INFO L82 PathProgramCache]: Analyzing trace with hash 2117439739, now seen corresponding path program 1 times [2021-03-26 03:30:42,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:30:42,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33540579] [2021-03-26 03:30:42,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:30:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:30:42,133 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:30:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:30:42,135 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:30:42,148 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:30:42,148 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:30:42,148 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-03-26 03:30:42,149 WARN L342 ceAbstractionStarter]: 77 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:30:42,149 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 78 thread instances. [2021-03-26 03:30:42,218 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:30:42,219 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:30:42,219 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:30:42,219 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:30:42,219 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:30:42,219 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:30:42,219 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:30:42,219 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:30:42,219 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:30:42,219 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:30:42,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 396 places, 239 transitions, 6874 flow [2021-03-26 03:30:42,310 INFO L129 PetriNetUnfolder]: 0/473 cut-off events. [2021-03-26 03:30:42,310 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:42,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3789 conditions, 473 events. 0/473 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1740 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 0. Up to 79 conditions per place. [2021-03-26 03:30:42,310 INFO L82 GeneralOperation]: Start removeDead. Operand has 396 places, 239 transitions, 6874 flow [2021-03-26 03:30:42,313 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 394 places, 237 transitions, 6870 flow [2021-03-26 03:30:42,313 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:30:42,313 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 394 places, 237 transitions, 6870 flow [2021-03-26 03:30:42,313 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 394 places, 237 transitions, 6870 flow [2021-03-26 03:30:42,315 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 394 places, 237 transitions, 6870 flow [2021-03-26 03:30:42,388 INFO L129 PetriNetUnfolder]: 0/315 cut-off events. [2021-03-26 03:30:42,388 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:42,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3631 conditions, 315 events. 0/315 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 950 event pairs, 0 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 0. Up to 79 conditions per place. [2021-03-26 03:30:42,417 INFO L142 LiptonReduction]: Number of co-enabled transitions 36660 [2021-03-26 03:30:55,092 INFO L154 LiptonReduction]: Checked pairs total: 15171 [2021-03-26 03:30:55,092 INFO L156 LiptonReduction]: Total number of compositions: 78 [2021-03-26 03:30:55,093 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12780 [2021-03-26 03:30:55,095 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:30:55,095 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:55,095 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:30:55,095 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:30:55,095 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:30:55,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:30:55,096 INFO L82 PathProgramCache]: Analyzing trace with hash 405411, now seen corresponding path program 1 times [2021-03-26 03:30:55,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:30:55,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336610723] [2021-03-26 03:30:55,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:30:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:30:55,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:30:55,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:30:55,116 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 03:30:55,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336610723] [2021-03-26 03:30:55,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:30:55,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:30:55,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529135278] [2021-03-26 03:30:55,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:30:55,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:30:55,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:30:55,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:30:55,117 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 317 [2021-03-26 03:30:55,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 159 transitions, 6714 flow. Second operand has 3 states, 3 states have (on average 314.6666666666667) internal successors, (944), 3 states have internal predecessors, (944), 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 03:30:55,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:30:55,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 317 [2021-03-26 03:30:55,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:30:55,167 INFO L129 PetriNetUnfolder]: 0/158 cut-off events. [2021-03-26 03:30:55,168 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:55,168 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3476 conditions, 158 events. 0/158 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 166 event pairs, 0 based on Foata normal form. 79/237 useless extension candidates. Maximal degree in co-relation 0. Up to 79 conditions per place. [2021-03-26 03:30:55,168 INFO L132 encePairwiseOnDemand]: 315/317 looper letters, 0 selfloop transitions, 1 changer transitions 0/158 dead transitions. [2021-03-26 03:30:55,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 158 transitions, 6714 flow [2021-03-26 03:30:55,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:30:55,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:30:55,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 944 transitions. [2021-03-26 03:30:55,169 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9926393270241851 [2021-03-26 03:30:55,169 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 944 transitions. [2021-03-26 03:30:55,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 944 transitions. [2021-03-26 03:30:55,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:30:55,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 944 transitions. [2021-03-26 03:30:55,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 314.6666666666667) internal successors, (944), 3 states have internal predecessors, (944), 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 03:30:55,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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 03:30:55,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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 03:30:55,170 INFO L185 Difference]: Start difference. First operand has 316 places, 159 transitions, 6714 flow. Second operand 3 states and 944 transitions. [2021-03-26 03:30:55,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 158 transitions, 6714 flow [2021-03-26 03:30:55,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 158 transitions, 708 flow, removed 3003 selfloop flow, removed 0 redundant places. [2021-03-26 03:30:55,277 INFO L241 Difference]: Finished difference. Result has 317 places, 158 transitions, 708 flow [2021-03-26 03:30:55,277 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=708, PETRI_PLACES=317, PETRI_TRANSITIONS=158} [2021-03-26 03:30:55,277 INFO L343 CegarLoopForPetriNet]: 316 programPoint places, 1 predicate places. [2021-03-26 03:30:55,277 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:30:55,277 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 317 places, 158 transitions, 708 flow [2021-03-26 03:30:55,277 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 317 places, 158 transitions, 708 flow [2021-03-26 03:30:55,278 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 317 places, 158 transitions, 708 flow [2021-03-26 03:30:55,297 INFO L129 PetriNetUnfolder]: 0/158 cut-off events. [2021-03-26 03:30:55,297 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:55,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 158 events. 0/158 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 160 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 0. Up to 79 conditions per place. [2021-03-26 03:30:55,301 INFO L142 LiptonReduction]: Number of co-enabled transitions 12168 [2021-03-26 03:30:55,309 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:30:55,309 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:30:55,309 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-03-26 03:30:55,312 INFO L480 AbstractCegarLoop]: Abstraction has has 317 places, 158 transitions, 708 flow [2021-03-26 03:30:55,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 314.6666666666667) internal successors, (944), 3 states have internal predecessors, (944), 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 03:30:55,312 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:30:55,312 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:30:55,312 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-03-26 03:30:55,312 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:30:55,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:30:55,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1047065309, now seen corresponding path program 1 times [2021-03-26 03:30:55,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:30:55,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458953985] [2021-03-26 03:30:55,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:30:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:30:55,329 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:30:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:30:55,331 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:30:55,342 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:30:55,343 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:30:55,343 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-03-26 03:30:55,343 WARN L342 ceAbstractionStarter]: 78 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:30:55,343 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 79 thread instances. [2021-03-26 03:30:55,416 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:30:55,416 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:30:55,416 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:30:55,416 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:30:55,416 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:30:55,416 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:30:55,416 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:30:55,416 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:30:55,416 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:30:55,416 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:30:55,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 401 places, 242 transitions, 7041 flow [2021-03-26 03:30:55,506 INFO L129 PetriNetUnfolder]: 0/479 cut-off events. [2021-03-26 03:30:55,506 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:55,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3877 conditions, 479 events. 0/479 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1727 event pairs, 0 based on Foata normal form. 0/399 useless extension candidates. Maximal degree in co-relation 0. Up to 80 conditions per place. [2021-03-26 03:30:55,507 INFO L82 GeneralOperation]: Start removeDead. Operand has 401 places, 242 transitions, 7041 flow [2021-03-26 03:30:55,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 399 places, 240 transitions, 7037 flow [2021-03-26 03:30:55,509 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:30:55,509 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 399 places, 240 transitions, 7037 flow [2021-03-26 03:30:55,509 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 399 places, 240 transitions, 7037 flow [2021-03-26 03:30:55,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 399 places, 240 transitions, 7037 flow [2021-03-26 03:30:55,584 INFO L129 PetriNetUnfolder]: 0/319 cut-off events. [2021-03-26 03:30:55,584 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:30:55,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3717 conditions, 319 events. 0/319 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1007 event pairs, 0 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 0. Up to 80 conditions per place. [2021-03-26 03:30:55,614 INFO L142 LiptonReduction]: Number of co-enabled transitions 37604 [2021-03-26 03:31:09,139 INFO L154 LiptonReduction]: Checked pairs total: 15563 [2021-03-26 03:31:09,139 INFO L156 LiptonReduction]: Total number of compositions: 79 [2021-03-26 03:31:09,139 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13630 [2021-03-26 03:31:09,141 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:31:09,141 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:31:09,141 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:31:09,141 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:31:09,141 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:31:09,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:31:09,145 INFO L82 PathProgramCache]: Analyzing trace with hash 415651, now seen corresponding path program 1 times [2021-03-26 03:31:09,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:31:09,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922477148] [2021-03-26 03:31:09,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:31:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:31:09,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:31:09,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:31:09,165 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 03:31:09,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922477148] [2021-03-26 03:31:09,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:31:09,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:31:09,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35103669] [2021-03-26 03:31:09,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:31:09,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:31:09,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:31:09,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:31:09,166 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 321 [2021-03-26 03:31:09,167 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 161 transitions, 6879 flow. Second operand has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 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 03:31:09,167 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:31:09,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 321 [2021-03-26 03:31:09,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:31:09,218 INFO L129 PetriNetUnfolder]: 0/160 cut-off events. [2021-03-26 03:31:09,218 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:31:09,218 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3560 conditions, 160 events. 0/160 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 151 event pairs, 0 based on Foata normal form. 80/240 useless extension candidates. Maximal degree in co-relation 0. Up to 80 conditions per place. [2021-03-26 03:31:09,218 INFO L132 encePairwiseOnDemand]: 319/321 looper letters, 0 selfloop transitions, 1 changer transitions 0/160 dead transitions. [2021-03-26 03:31:09,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 160 transitions, 6879 flow [2021-03-26 03:31:09,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:31:09,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:31:09,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 956 transitions. [2021-03-26 03:31:09,219 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9927310488058152 [2021-03-26 03:31:09,219 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 956 transitions. [2021-03-26 03:31:09,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 956 transitions. [2021-03-26 03:31:09,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:31:09,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 956 transitions. [2021-03-26 03:31:09,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 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 03:31:09,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 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 03:31:09,221 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 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 03:31:09,221 INFO L185 Difference]: Start difference. First operand has 320 places, 161 transitions, 6879 flow. Second operand 3 states and 956 transitions. [2021-03-26 03:31:09,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 160 transitions, 6879 flow [2021-03-26 03:31:09,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 160 transitions, 717 flow, removed 3081 selfloop flow, removed 0 redundant places. [2021-03-26 03:31:09,337 INFO L241 Difference]: Finished difference. Result has 321 places, 160 transitions, 717 flow [2021-03-26 03:31:09,337 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=717, PETRI_PLACES=321, PETRI_TRANSITIONS=160} [2021-03-26 03:31:09,337 INFO L343 CegarLoopForPetriNet]: 320 programPoint places, 1 predicate places. [2021-03-26 03:31:09,338 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:31:09,338 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 321 places, 160 transitions, 717 flow [2021-03-26 03:31:09,338 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 321 places, 160 transitions, 717 flow [2021-03-26 03:31:09,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 321 places, 160 transitions, 717 flow [2021-03-26 03:31:09,357 INFO L129 PetriNetUnfolder]: 0/160 cut-off events. [2021-03-26 03:31:09,358 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:31:09,358 INFO L84 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 160 events. 0/160 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 159 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 0. Up to 80 conditions per place. [2021-03-26 03:31:09,361 INFO L142 LiptonReduction]: Number of co-enabled transitions 12482 [2021-03-26 03:31:09,369 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:31:09,369 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:31:09,369 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 31 [2021-03-26 03:31:09,372 INFO L480 AbstractCegarLoop]: Abstraction has has 321 places, 160 transitions, 717 flow [2021-03-26 03:31:09,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 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 03:31:09,372 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:31:09,372 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:31:09,372 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-03-26 03:31:09,372 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:31:09,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:31:09,372 INFO L82 PathProgramCache]: Analyzing trace with hash 2125115286, now seen corresponding path program 1 times [2021-03-26 03:31:09,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:31:09,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834301452] [2021-03-26 03:31:09,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:31:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:31:09,389 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:31:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:31:09,390 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:31:09,401 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:31:09,402 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:31:09,402 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-03-26 03:31:09,402 WARN L342 ceAbstractionStarter]: 79 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:31:09,402 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 80 thread instances. [2021-03-26 03:31:09,487 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:31:09,487 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:31:09,488 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:31:09,488 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:31:09,488 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:31:09,488 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:31:09,488 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:31:09,488 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:31:09,488 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:31:09,488 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:31:09,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 406 places, 245 transitions, 7210 flow [2021-03-26 03:31:09,582 INFO L129 PetriNetUnfolder]: 0/485 cut-off events. [2021-03-26 03:31:09,582 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:31:09,583 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3966 conditions, 485 events. 0/485 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1761 event pairs, 0 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 0. Up to 81 conditions per place. [2021-03-26 03:31:09,583 INFO L82 GeneralOperation]: Start removeDead. Operand has 406 places, 245 transitions, 7210 flow [2021-03-26 03:31:09,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 404 places, 243 transitions, 7206 flow [2021-03-26 03:31:09,585 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:31:09,585 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 404 places, 243 transitions, 7206 flow [2021-03-26 03:31:09,585 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 404 places, 243 transitions, 7206 flow [2021-03-26 03:31:09,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 404 places, 243 transitions, 7206 flow [2021-03-26 03:31:09,661 INFO L129 PetriNetUnfolder]: 0/323 cut-off events. [2021-03-26 03:31:09,661 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:31:09,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3804 conditions, 323 events. 0/323 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 967 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 0. Up to 81 conditions per place. [2021-03-26 03:31:09,691 INFO L142 LiptonReduction]: Number of co-enabled transitions 38560 [2021-03-26 03:31:24,413 INFO L154 LiptonReduction]: Checked pairs total: 15960 [2021-03-26 03:31:24,413 INFO L156 LiptonReduction]: Total number of compositions: 80 [2021-03-26 03:31:24,413 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14828 [2021-03-26 03:31:24,416 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:31:24,416 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:31:24,416 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:31:24,416 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:31:24,416 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:31:24,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:31:24,417 INFO L82 PathProgramCache]: Analyzing trace with hash 426019, now seen corresponding path program 1 times [2021-03-26 03:31:24,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:31:24,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955735808] [2021-03-26 03:31:24,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:31:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:31:24,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:31:24,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:31:24,439 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 03:31:24,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955735808] [2021-03-26 03:31:24,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:31:24,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:31:24,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979443369] [2021-03-26 03:31:24,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:31:24,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:31:24,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:31:24,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:31:24,440 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 325 [2021-03-26 03:31:24,441 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 163 transitions, 7046 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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 03:31:24,441 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:31:24,441 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 325 [2021-03-26 03:31:24,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:31:24,494 INFO L129 PetriNetUnfolder]: 0/162 cut-off events. [2021-03-26 03:31:24,494 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:31:24,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3645 conditions, 162 events. 0/162 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 152 event pairs, 0 based on Foata normal form. 81/243 useless extension candidates. Maximal degree in co-relation 0. Up to 81 conditions per place. [2021-03-26 03:31:24,494 INFO L132 encePairwiseOnDemand]: 323/325 looper letters, 0 selfloop transitions, 1 changer transitions 0/162 dead transitions. [2021-03-26 03:31:24,495 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 162 transitions, 7046 flow [2021-03-26 03:31:24,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:31:24,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:31:24,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 968 transitions. [2021-03-26 03:31:24,495 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9928205128205129 [2021-03-26 03:31:24,495 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 968 transitions. [2021-03-26 03:31:24,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 968 transitions. [2021-03-26 03:31:24,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:31:24,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 968 transitions. [2021-03-26 03:31:24,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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 03:31:24,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 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 03:31:24,497 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 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 03:31:24,497 INFO L185 Difference]: Start difference. First operand has 324 places, 163 transitions, 7046 flow. Second operand 3 states and 968 transitions. [2021-03-26 03:31:24,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 162 transitions, 7046 flow [2021-03-26 03:31:24,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 162 transitions, 726 flow, removed 3160 selfloop flow, removed 0 redundant places. [2021-03-26 03:31:24,620 INFO L241 Difference]: Finished difference. Result has 325 places, 162 transitions, 726 flow [2021-03-26 03:31:24,620 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=726, PETRI_PLACES=325, PETRI_TRANSITIONS=162} [2021-03-26 03:31:24,620 INFO L343 CegarLoopForPetriNet]: 324 programPoint places, 1 predicate places. [2021-03-26 03:31:24,620 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:31:24,620 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 325 places, 162 transitions, 726 flow [2021-03-26 03:31:24,620 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 325 places, 162 transitions, 726 flow [2021-03-26 03:31:24,621 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 325 places, 162 transitions, 726 flow [2021-03-26 03:31:24,741 INFO L129 PetriNetUnfolder]: 0/162 cut-off events. [2021-03-26 03:31:24,741 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:31:24,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 162 events. 0/162 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 160 event pairs, 0 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 0. Up to 81 conditions per place. [2021-03-26 03:31:24,744 INFO L142 LiptonReduction]: Number of co-enabled transitions 12800 [2021-03-26 03:31:24,753 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:31:24,753 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:31:24,753 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 133 [2021-03-26 03:31:24,755 INFO L480 AbstractCegarLoop]: Abstraction has has 325 places, 162 transitions, 726 flow [2021-03-26 03:31:24,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 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 03:31:24,755 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:31:24,755 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:31:24,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-03-26 03:31:24,756 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:31:24,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:31:24,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1215918752, now seen corresponding path program 1 times [2021-03-26 03:31:24,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:31:24,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438657533] [2021-03-26 03:31:24,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:31:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:31:24,776 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:31:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:31:24,777 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:31:24,790 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:31:24,790 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:31:24,790 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-03-26 03:31:24,790 WARN L342 ceAbstractionStarter]: 80 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:31:24,790 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 81 thread instances. [2021-03-26 03:31:24,887 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:31:24,887 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:31:24,887 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:31:24,887 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:31:24,887 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:31:24,887 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:31:24,887 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:31:24,888 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:31:24,888 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:31:24,888 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:31:24,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 411 places, 248 transitions, 7381 flow [2021-03-26 03:31:24,985 INFO L129 PetriNetUnfolder]: 0/491 cut-off events. [2021-03-26 03:31:24,985 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:31:24,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4056 conditions, 491 events. 0/491 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1826 event pairs, 0 based on Foata normal form. 0/409 useless extension candidates. Maximal degree in co-relation 0. Up to 82 conditions per place. [2021-03-26 03:31:24,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 411 places, 248 transitions, 7381 flow [2021-03-26 03:31:24,988 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 409 places, 246 transitions, 7377 flow [2021-03-26 03:31:24,988 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:31:24,988 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 409 places, 246 transitions, 7377 flow [2021-03-26 03:31:24,988 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 409 places, 246 transitions, 7377 flow [2021-03-26 03:31:24,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 409 places, 246 transitions, 7377 flow [2021-03-26 03:31:25,068 INFO L129 PetriNetUnfolder]: 0/327 cut-off events. [2021-03-26 03:31:25,068 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:31:25,068 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3892 conditions, 327 events. 0/327 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 904 event pairs, 0 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 0. Up to 82 conditions per place. [2021-03-26 03:31:25,100 INFO L142 LiptonReduction]: Number of co-enabled transitions 39528 [2021-03-26 03:31:40,854 INFO L154 LiptonReduction]: Checked pairs total: 16362 [2021-03-26 03:31:40,854 INFO L156 LiptonReduction]: Total number of compositions: 81 [2021-03-26 03:31:40,855 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15867 [2021-03-26 03:31:40,857 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:31:40,857 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:31:40,858 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:31:40,858 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:31:40,858 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:31:40,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:31:40,858 INFO L82 PathProgramCache]: Analyzing trace with hash 436515, now seen corresponding path program 1 times [2021-03-26 03:31:40,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:31:40,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425667131] [2021-03-26 03:31:40,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:31:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:31:40,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:31:40,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:31:40,879 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 03:31:40,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425667131] [2021-03-26 03:31:40,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:31:40,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:31:40,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878650051] [2021-03-26 03:31:40,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:31:40,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:31:40,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:31:40,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:31:40,881 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 329 [2021-03-26 03:31:40,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 165 transitions, 7215 flow. Second operand has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 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 03:31:40,881 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:31:40,881 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 329 [2021-03-26 03:31:40,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:31:40,935 INFO L129 PetriNetUnfolder]: 0/164 cut-off events. [2021-03-26 03:31:40,935 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:31:40,935 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3731 conditions, 164 events. 0/164 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 153 event pairs, 0 based on Foata normal form. 82/246 useless extension candidates. Maximal degree in co-relation 0. Up to 82 conditions per place. [2021-03-26 03:31:40,936 INFO L132 encePairwiseOnDemand]: 327/329 looper letters, 0 selfloop transitions, 1 changer transitions 0/164 dead transitions. [2021-03-26 03:31:40,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 164 transitions, 7215 flow [2021-03-26 03:31:40,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:31:40,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:31:40,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 980 transitions. [2021-03-26 03:31:40,936 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9929078014184397 [2021-03-26 03:31:40,936 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 980 transitions. [2021-03-26 03:31:40,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 980 transitions. [2021-03-26 03:31:40,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:31:40,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 980 transitions. [2021-03-26 03:31:40,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 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 03:31:40,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 03:31:40,938 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 03:31:40,938 INFO L185 Difference]: Start difference. First operand has 328 places, 165 transitions, 7215 flow. Second operand 3 states and 980 transitions. [2021-03-26 03:31:40,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 164 transitions, 7215 flow [2021-03-26 03:31:41,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 164 transitions, 735 flow, removed 3240 selfloop flow, removed 0 redundant places. [2021-03-26 03:31:41,067 INFO L241 Difference]: Finished difference. Result has 329 places, 164 transitions, 735 flow [2021-03-26 03:31:41,067 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=735, PETRI_PLACES=329, PETRI_TRANSITIONS=164} [2021-03-26 03:31:41,067 INFO L343 CegarLoopForPetriNet]: 328 programPoint places, 1 predicate places. [2021-03-26 03:31:41,067 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:31:41,067 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 329 places, 164 transitions, 735 flow [2021-03-26 03:31:41,068 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 329 places, 164 transitions, 735 flow [2021-03-26 03:31:41,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 329 places, 164 transitions, 735 flow [2021-03-26 03:31:41,088 INFO L129 PetriNetUnfolder]: 0/164 cut-off events. [2021-03-26 03:31:41,089 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:31:41,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 164 events. 0/164 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 161 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 0. Up to 82 conditions per place. [2021-03-26 03:31:41,092 INFO L142 LiptonReduction]: Number of co-enabled transitions 13122 [2021-03-26 03:31:41,101 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:31:41,101 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:31:41,101 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 34 [2021-03-26 03:31:41,104 INFO L480 AbstractCegarLoop]: Abstraction has has 329 places, 164 transitions, 735 flow [2021-03-26 03:31:41,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 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 03:31:41,104 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:31:41,104 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:31:41,104 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-03-26 03:31:41,104 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:31:41,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:31:41,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1883866559, now seen corresponding path program 1 times [2021-03-26 03:31:41,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:31:41,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818635192] [2021-03-26 03:31:41,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:31:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:31:41,121 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:31:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:31:41,123 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:31:41,135 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:31:41,135 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:31:41,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-03-26 03:31:41,135 WARN L342 ceAbstractionStarter]: 81 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:31:41,135 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 82 thread instances. [2021-03-26 03:31:41,226 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:31:41,226 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:31:41,226 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:31:41,226 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:31:41,226 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:31:41,226 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:31:41,227 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:31:41,227 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:31:41,227 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:31:41,227 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:31:41,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 416 places, 251 transitions, 7554 flow [2021-03-26 03:31:41,325 INFO L129 PetriNetUnfolder]: 0/497 cut-off events. [2021-03-26 03:31:41,325 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:31:41,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4147 conditions, 497 events. 0/497 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1845 event pairs, 0 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 0. Up to 83 conditions per place. [2021-03-26 03:31:41,325 INFO L82 GeneralOperation]: Start removeDead. Operand has 416 places, 251 transitions, 7554 flow [2021-03-26 03:31:41,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 414 places, 249 transitions, 7550 flow [2021-03-26 03:31:41,327 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:31:41,327 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 414 places, 249 transitions, 7550 flow [2021-03-26 03:31:41,328 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 414 places, 249 transitions, 7550 flow [2021-03-26 03:31:41,329 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 414 places, 249 transitions, 7550 flow [2021-03-26 03:31:41,511 INFO L129 PetriNetUnfolder]: 0/331 cut-off events. [2021-03-26 03:31:41,511 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:31:41,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3981 conditions, 331 events. 0/331 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 963 event pairs, 0 based on Foata normal form. 0/331 useless extension candidates. Maximal degree in co-relation 0. Up to 83 conditions per place. [2021-03-26 03:31:41,542 INFO L142 LiptonReduction]: Number of co-enabled transitions 40508 [2021-03-26 03:31:58,630 INFO L154 LiptonReduction]: Checked pairs total: 16769 [2021-03-26 03:31:58,630 INFO L156 LiptonReduction]: Total number of compositions: 82 [2021-03-26 03:31:58,630 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17303 [2021-03-26 03:31:58,633 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:31:58,634 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:31:58,634 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:31:58,634 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:31:58,634 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:31:58,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:31:58,634 INFO L82 PathProgramCache]: Analyzing trace with hash 447139, now seen corresponding path program 1 times [2021-03-26 03:31:58,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:31:58,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600892488] [2021-03-26 03:31:58,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:31:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:31:58,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:31:58,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:31:58,657 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 03:31:58,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600892488] [2021-03-26 03:31:58,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:31:58,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:31:58,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189294602] [2021-03-26 03:31:58,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:31:58,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:31:58,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:31:58,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:31:58,658 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 333 [2021-03-26 03:31:58,658 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 167 transitions, 7386 flow. Second operand has 3 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 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 03:31:58,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:31:58,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 333 [2021-03-26 03:31:58,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:31:58,714 INFO L129 PetriNetUnfolder]: 0/166 cut-off events. [2021-03-26 03:31:58,715 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:31:58,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3818 conditions, 166 events. 0/166 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 184 event pairs, 0 based on Foata normal form. 83/249 useless extension candidates. Maximal degree in co-relation 0. Up to 83 conditions per place. [2021-03-26 03:31:58,715 INFO L132 encePairwiseOnDemand]: 331/333 looper letters, 0 selfloop transitions, 1 changer transitions 0/166 dead transitions. [2021-03-26 03:31:58,715 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 166 transitions, 7386 flow [2021-03-26 03:31:58,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:31:58,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:31:58,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 992 transitions. [2021-03-26 03:31:58,716 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.992992992992993 [2021-03-26 03:31:58,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 992 transitions. [2021-03-26 03:31:58,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 992 transitions. [2021-03-26 03:31:58,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:31:58,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 992 transitions. [2021-03-26 03:31:58,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 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 03:31:58,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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 03:31:58,717 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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 03:31:58,717 INFO L185 Difference]: Start difference. First operand has 332 places, 167 transitions, 7386 flow. Second operand 3 states and 992 transitions. [2021-03-26 03:31:58,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 166 transitions, 7386 flow [2021-03-26 03:31:58,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 166 transitions, 744 flow, removed 3321 selfloop flow, removed 0 redundant places. [2021-03-26 03:31:58,856 INFO L241 Difference]: Finished difference. Result has 333 places, 166 transitions, 744 flow [2021-03-26 03:31:58,856 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=744, PETRI_PLACES=333, PETRI_TRANSITIONS=166} [2021-03-26 03:31:58,856 INFO L343 CegarLoopForPetriNet]: 332 programPoint places, 1 predicate places. [2021-03-26 03:31:58,856 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:31:58,856 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 333 places, 166 transitions, 744 flow [2021-03-26 03:31:58,857 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 333 places, 166 transitions, 744 flow [2021-03-26 03:31:58,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 333 places, 166 transitions, 744 flow [2021-03-26 03:31:58,879 INFO L129 PetriNetUnfolder]: 0/166 cut-off events. [2021-03-26 03:31:58,879 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:31:58,879 INFO L84 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 166 events. 0/166 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 154 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 0. Up to 83 conditions per place. [2021-03-26 03:31:58,883 INFO L142 LiptonReduction]: Number of co-enabled transitions 13448 [2021-03-26 03:31:58,892 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:31:58,892 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:31:58,893 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 37 [2021-03-26 03:31:58,897 INFO L480 AbstractCegarLoop]: Abstraction has has 333 places, 166 transitions, 744 flow [2021-03-26 03:31:58,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 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 03:31:58,897 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:31:58,897 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:31:58,897 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-03-26 03:31:58,897 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:31:58,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:31:58,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1599175267, now seen corresponding path program 1 times [2021-03-26 03:31:58,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:31:58,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852109088] [2021-03-26 03:31:58,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:31:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:31:58,929 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:31:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:31:58,931 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:31:58,944 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:31:58,944 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:31:58,944 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-03-26 03:31:58,945 WARN L342 ceAbstractionStarter]: 82 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:31:58,945 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 83 thread instances. [2021-03-26 03:31:59,032 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:31:59,032 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:31:59,032 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:31:59,032 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:31:59,033 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:31:59,033 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:31:59,033 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:31:59,033 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:31:59,033 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:31:59,033 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:31:59,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 421 places, 254 transitions, 7729 flow [2021-03-26 03:31:59,134 INFO L129 PetriNetUnfolder]: 0/503 cut-off events. [2021-03-26 03:31:59,134 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:31:59,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4239 conditions, 503 events. 0/503 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1847 event pairs, 0 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 0. Up to 84 conditions per place. [2021-03-26 03:31:59,134 INFO L82 GeneralOperation]: Start removeDead. Operand has 421 places, 254 transitions, 7729 flow [2021-03-26 03:31:59,137 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 419 places, 252 transitions, 7725 flow [2021-03-26 03:31:59,137 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:31:59,137 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 419 places, 252 transitions, 7725 flow [2021-03-26 03:31:59,137 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 419 places, 252 transitions, 7725 flow [2021-03-26 03:31:59,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 419 places, 252 transitions, 7725 flow [2021-03-26 03:31:59,221 INFO L129 PetriNetUnfolder]: 0/335 cut-off events. [2021-03-26 03:31:59,221 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:31:59,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4071 conditions, 335 events. 0/335 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1042 event pairs, 0 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 0. Up to 84 conditions per place. [2021-03-26 03:31:59,255 INFO L142 LiptonReduction]: Number of co-enabled transitions 41500 [2021-03-26 03:32:17,112 INFO L154 LiptonReduction]: Checked pairs total: 17181 [2021-03-26 03:32:17,112 INFO L156 LiptonReduction]: Total number of compositions: 83 [2021-03-26 03:32:17,112 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17975 [2021-03-26 03:32:17,116 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:32:17,116 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:32:17,116 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:32:17,116 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:32:17,116 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:32:17,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:32:17,116 INFO L82 PathProgramCache]: Analyzing trace with hash 457891, now seen corresponding path program 1 times [2021-03-26 03:32:17,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:32:17,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991569684] [2021-03-26 03:32:17,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:32:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:32:17,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:32:17,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:32:17,141 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 03:32:17,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991569684] [2021-03-26 03:32:17,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:32:17,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:32:17,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152476952] [2021-03-26 03:32:17,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:32:17,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:32:17,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:32:17,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:32:17,142 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 337 [2021-03-26 03:32:17,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 169 transitions, 7559 flow. Second operand has 3 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 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 03:32:17,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:32:17,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 337 [2021-03-26 03:32:17,143 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:32:17,200 INFO L129 PetriNetUnfolder]: 0/168 cut-off events. [2021-03-26 03:32:17,200 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:32:17,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3906 conditions, 168 events. 0/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 173 event pairs, 0 based on Foata normal form. 84/252 useless extension candidates. Maximal degree in co-relation 0. Up to 84 conditions per place. [2021-03-26 03:32:17,201 INFO L132 encePairwiseOnDemand]: 335/337 looper letters, 0 selfloop transitions, 1 changer transitions 0/168 dead transitions. [2021-03-26 03:32:17,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 168 transitions, 7559 flow [2021-03-26 03:32:17,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:32:17,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:32:17,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1004 transitions. [2021-03-26 03:32:17,202 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9930761622156281 [2021-03-26 03:32:17,202 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1004 transitions. [2021-03-26 03:32:17,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1004 transitions. [2021-03-26 03:32:17,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:32:17,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1004 transitions. [2021-03-26 03:32:17,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 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 03:32:17,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 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 03:32:17,203 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 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 03:32:17,203 INFO L185 Difference]: Start difference. First operand has 336 places, 169 transitions, 7559 flow. Second operand 3 states and 1004 transitions. [2021-03-26 03:32:17,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 168 transitions, 7559 flow [2021-03-26 03:32:17,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 168 transitions, 753 flow, removed 3403 selfloop flow, removed 0 redundant places. [2021-03-26 03:32:17,357 INFO L241 Difference]: Finished difference. Result has 337 places, 168 transitions, 753 flow [2021-03-26 03:32:17,357 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=753, PETRI_PLACES=337, PETRI_TRANSITIONS=168} [2021-03-26 03:32:17,357 INFO L343 CegarLoopForPetriNet]: 336 programPoint places, 1 predicate places. [2021-03-26 03:32:17,357 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:32:17,357 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 337 places, 168 transitions, 753 flow [2021-03-26 03:32:17,357 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 337 places, 168 transitions, 753 flow [2021-03-26 03:32:17,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 337 places, 168 transitions, 753 flow [2021-03-26 03:32:17,380 INFO L129 PetriNetUnfolder]: 0/168 cut-off events. [2021-03-26 03:32:17,380 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:32:17,380 INFO L84 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 168 events. 0/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 151 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 0. Up to 84 conditions per place. [2021-03-26 03:32:17,384 INFO L142 LiptonReduction]: Number of co-enabled transitions 13778 [2021-03-26 03:32:17,393 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:32:17,393 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:32:17,393 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36 [2021-03-26 03:32:17,397 INFO L480 AbstractCegarLoop]: Abstraction has has 337 places, 168 transitions, 753 flow [2021-03-26 03:32:17,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 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 03:32:17,397 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:32:17,397 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:32:17,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-03-26 03:32:17,397 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:32:17,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:32:17,397 INFO L82 PathProgramCache]: Analyzing trace with hash 443771644, now seen corresponding path program 1 times [2021-03-26 03:32:17,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:32:17,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665287852] [2021-03-26 03:32:17,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:32:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:32:17,415 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:32:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:32:17,417 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:32:17,430 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:32:17,430 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:32:17,430 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-03-26 03:32:17,430 WARN L342 ceAbstractionStarter]: 83 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:32:17,431 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 84 thread instances. [2021-03-26 03:32:17,532 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:32:17,533 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:32:17,533 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:32:17,533 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:32:17,533 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:32:17,533 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:32:17,533 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:32:17,533 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:32:17,533 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:32:17,533 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:32:17,535 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 426 places, 257 transitions, 7906 flow [2021-03-26 03:32:17,638 INFO L129 PetriNetUnfolder]: 0/509 cut-off events. [2021-03-26 03:32:17,638 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:32:17,638 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4332 conditions, 509 events. 0/509 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1907 event pairs, 0 based on Foata normal form. 0/424 useless extension candidates. Maximal degree in co-relation 0. Up to 85 conditions per place. [2021-03-26 03:32:17,638 INFO L82 GeneralOperation]: Start removeDead. Operand has 426 places, 257 transitions, 7906 flow [2021-03-26 03:32:17,641 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 424 places, 255 transitions, 7902 flow [2021-03-26 03:32:17,641 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:32:17,641 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 424 places, 255 transitions, 7902 flow [2021-03-26 03:32:17,641 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 424 places, 255 transitions, 7902 flow [2021-03-26 03:32:17,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 424 places, 255 transitions, 7902 flow [2021-03-26 03:32:17,727 INFO L129 PetriNetUnfolder]: 0/339 cut-off events. [2021-03-26 03:32:17,727 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:32:17,727 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4162 conditions, 339 events. 0/339 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1037 event pairs, 0 based on Foata normal form. 0/339 useless extension candidates. Maximal degree in co-relation 0. Up to 85 conditions per place. [2021-03-26 03:32:17,761 INFO L142 LiptonReduction]: Number of co-enabled transitions 42504 [2021-03-26 03:32:37,742 INFO L154 LiptonReduction]: Checked pairs total: 17598 [2021-03-26 03:32:37,743 INFO L156 LiptonReduction]: Total number of compositions: 84 [2021-03-26 03:32:37,743 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20102 [2021-03-26 03:32:37,746 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:32:37,746 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:32:37,746 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:32:37,746 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:32:37,746 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:32:37,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:32:37,746 INFO L82 PathProgramCache]: Analyzing trace with hash 468771, now seen corresponding path program 1 times [2021-03-26 03:32:37,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:32:37,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516896217] [2021-03-26 03:32:37,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:32:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:32:37,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:32:37,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:32:37,769 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 03:32:37,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516896217] [2021-03-26 03:32:37,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:32:37,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:32:37,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723471362] [2021-03-26 03:32:37,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:32:37,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:32:37,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:32:37,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:32:37,771 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 341 [2021-03-26 03:32:37,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 171 transitions, 7734 flow. Second operand has 3 states, 3 states have (on average 338.6666666666667) internal successors, (1016), 3 states have internal predecessors, (1016), 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 03:32:37,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:32:37,771 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 341 [2021-03-26 03:32:37,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:32:37,829 INFO L129 PetriNetUnfolder]: 0/170 cut-off events. [2021-03-26 03:32:37,829 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:32:37,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3995 conditions, 170 events. 0/170 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 140 event pairs, 0 based on Foata normal form. 85/255 useless extension candidates. Maximal degree in co-relation 0. Up to 85 conditions per place. [2021-03-26 03:32:37,830 INFO L132 encePairwiseOnDemand]: 339/341 looper letters, 0 selfloop transitions, 1 changer transitions 0/170 dead transitions. [2021-03-26 03:32:37,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 170 transitions, 7734 flow [2021-03-26 03:32:37,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:32:37,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:32:37,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1016 transitions. [2021-03-26 03:32:37,831 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9931573802541545 [2021-03-26 03:32:37,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1016 transitions. [2021-03-26 03:32:37,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1016 transitions. [2021-03-26 03:32:37,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:32:37,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1016 transitions. [2021-03-26 03:32:37,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.6666666666667) internal successors, (1016), 3 states have internal predecessors, (1016), 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 03:32:37,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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 03:32:37,832 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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 03:32:37,832 INFO L185 Difference]: Start difference. First operand has 340 places, 171 transitions, 7734 flow. Second operand 3 states and 1016 transitions. [2021-03-26 03:32:37,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 170 transitions, 7734 flow [2021-03-26 03:32:38,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 170 transitions, 762 flow, removed 3486 selfloop flow, removed 0 redundant places. [2021-03-26 03:32:38,011 INFO L241 Difference]: Finished difference. Result has 341 places, 170 transitions, 762 flow [2021-03-26 03:32:38,011 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=762, PETRI_PLACES=341, PETRI_TRANSITIONS=170} [2021-03-26 03:32:38,011 INFO L343 CegarLoopForPetriNet]: 340 programPoint places, 1 predicate places. [2021-03-26 03:32:38,011 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:32:38,011 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 341 places, 170 transitions, 762 flow [2021-03-26 03:32:38,011 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 341 places, 170 transitions, 762 flow [2021-03-26 03:32:38,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 341 places, 170 transitions, 762 flow [2021-03-26 03:32:38,035 INFO L129 PetriNetUnfolder]: 0/170 cut-off events. [2021-03-26 03:32:38,035 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:32:38,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 170 events. 0/170 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 160 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 0. Up to 85 conditions per place. [2021-03-26 03:32:38,039 INFO L142 LiptonReduction]: Number of co-enabled transitions 14112 [2021-03-26 03:32:38,049 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:32:38,049 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:32:38,049 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 38 [2021-03-26 03:32:38,053 INFO L480 AbstractCegarLoop]: Abstraction has has 341 places, 170 transitions, 762 flow [2021-03-26 03:32:38,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 338.6666666666667) internal successors, (1016), 3 states have internal predecessors, (1016), 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 03:32:38,053 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:32:38,054 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:32:38,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-03-26 03:32:38,054 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:32:38,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:32:38,054 INFO L82 PathProgramCache]: Analyzing trace with hash 777326630, now seen corresponding path program 1 times [2021-03-26 03:32:38,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:32:38,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720739601] [2021-03-26 03:32:38,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:32:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:32:38,072 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:32:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:32:38,074 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:32:38,088 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:32:38,088 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:32:38,088 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-03-26 03:32:38,088 WARN L342 ceAbstractionStarter]: 84 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:32:38,088 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 85 thread instances. [2021-03-26 03:32:38,200 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:32:38,200 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:32:38,201 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:32:38,201 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:32:38,201 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:32:38,201 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:32:38,201 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:32:38,201 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:32:38,201 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:32:38,201 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:32:38,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 431 places, 260 transitions, 8085 flow [2021-03-26 03:32:38,308 INFO L129 PetriNetUnfolder]: 0/515 cut-off events. [2021-03-26 03:32:38,309 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:32:38,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4426 conditions, 515 events. 0/515 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1911 event pairs, 0 based on Foata normal form. 0/429 useless extension candidates. Maximal degree in co-relation 0. Up to 86 conditions per place. [2021-03-26 03:32:38,309 INFO L82 GeneralOperation]: Start removeDead. Operand has 431 places, 260 transitions, 8085 flow [2021-03-26 03:32:38,311 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 429 places, 258 transitions, 8081 flow [2021-03-26 03:32:38,311 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:32:38,312 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 429 places, 258 transitions, 8081 flow [2021-03-26 03:32:38,312 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 429 places, 258 transitions, 8081 flow [2021-03-26 03:32:38,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 429 places, 258 transitions, 8081 flow [2021-03-26 03:32:38,502 INFO L129 PetriNetUnfolder]: 0/343 cut-off events. [2021-03-26 03:32:38,502 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:32:38,502 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4254 conditions, 343 events. 0/343 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1025 event pairs, 0 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 0. Up to 86 conditions per place. [2021-03-26 03:32:38,538 INFO L142 LiptonReduction]: Number of co-enabled transitions 43520 [2021-03-26 03:32:59,621 INFO L154 LiptonReduction]: Checked pairs total: 18020 [2021-03-26 03:32:59,621 INFO L156 LiptonReduction]: Total number of compositions: 85 [2021-03-26 03:32:59,621 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 21310 [2021-03-26 03:32:59,625 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:32:59,625 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:32:59,625 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:32:59,625 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:32:59,625 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:32:59,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:32:59,625 INFO L82 PathProgramCache]: Analyzing trace with hash 479779, now seen corresponding path program 1 times [2021-03-26 03:32:59,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:32:59,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256464934] [2021-03-26 03:32:59,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:32:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:32:59,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:32:59,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:32:59,649 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 03:32:59,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256464934] [2021-03-26 03:32:59,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:32:59,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:32:59,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124306576] [2021-03-26 03:32:59,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:32:59,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:32:59,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:32:59,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:32:59,651 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 345 [2021-03-26 03:32:59,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 173 transitions, 7911 flow. Second operand has 3 states, 3 states have (on average 342.6666666666667) internal successors, (1028), 3 states have internal predecessors, (1028), 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 03:32:59,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:32:59,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 345 [2021-03-26 03:32:59,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:32:59,710 INFO L129 PetriNetUnfolder]: 0/172 cut-off events. [2021-03-26 03:32:59,710 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:32:59,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4085 conditions, 172 events. 0/172 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 177 event pairs, 0 based on Foata normal form. 86/258 useless extension candidates. Maximal degree in co-relation 0. Up to 86 conditions per place. [2021-03-26 03:32:59,710 INFO L132 encePairwiseOnDemand]: 343/345 looper letters, 0 selfloop transitions, 1 changer transitions 0/172 dead transitions. [2021-03-26 03:32:59,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 172 transitions, 7911 flow [2021-03-26 03:32:59,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:32:59,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:32:59,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1028 transitions. [2021-03-26 03:32:59,711 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9932367149758454 [2021-03-26 03:32:59,711 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1028 transitions. [2021-03-26 03:32:59,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1028 transitions. [2021-03-26 03:32:59,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:32:59,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1028 transitions. [2021-03-26 03:32:59,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 342.6666666666667) internal successors, (1028), 3 states have internal predecessors, (1028), 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 03:32:59,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 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 03:32:59,712 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 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 03:32:59,712 INFO L185 Difference]: Start difference. First operand has 344 places, 173 transitions, 7911 flow. Second operand 3 states and 1028 transitions. [2021-03-26 03:32:59,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 172 transitions, 7911 flow [2021-03-26 03:32:59,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 172 transitions, 771 flow, removed 3570 selfloop flow, removed 0 redundant places. [2021-03-26 03:32:59,907 INFO L241 Difference]: Finished difference. Result has 345 places, 172 transitions, 771 flow [2021-03-26 03:32:59,907 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=771, PETRI_PLACES=345, PETRI_TRANSITIONS=172} [2021-03-26 03:32:59,907 INFO L343 CegarLoopForPetriNet]: 344 programPoint places, 1 predicate places. [2021-03-26 03:32:59,908 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:32:59,908 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 345 places, 172 transitions, 771 flow [2021-03-26 03:32:59,908 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 345 places, 172 transitions, 771 flow [2021-03-26 03:32:59,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 345 places, 172 transitions, 771 flow [2021-03-26 03:32:59,930 INFO L129 PetriNetUnfolder]: 0/172 cut-off events. [2021-03-26 03:32:59,930 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:32:59,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 172 events. 0/172 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 167 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 0. Up to 86 conditions per place. [2021-03-26 03:32:59,934 INFO L142 LiptonReduction]: Number of co-enabled transitions 14450 [2021-03-26 03:32:59,943 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:32:59,943 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:32:59,943 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36 [2021-03-26 03:32:59,947 INFO L480 AbstractCegarLoop]: Abstraction has has 345 places, 172 transitions, 771 flow [2021-03-26 03:32:59,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 342.6666666666667) internal successors, (1028), 3 states have internal predecessors, (1028), 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 03:32:59,947 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:32:59,947 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:32:59,947 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-03-26 03:32:59,947 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:32:59,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:32:59,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1051655111, now seen corresponding path program 1 times [2021-03-26 03:32:59,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:32:59,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030796617] [2021-03-26 03:32:59,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:33:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:33:00,065 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:33:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:33:00,067 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:33:00,082 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:33:00,082 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:33:00,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-03-26 03:33:00,082 WARN L342 ceAbstractionStarter]: 85 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:33:00,083 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 86 thread instances. [2021-03-26 03:33:00,184 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:33:00,184 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:33:00,185 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:33:00,185 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:33:00,185 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:33:00,185 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:33:00,185 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:33:00,185 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:33:00,185 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:33:00,185 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:33:00,187 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 436 places, 263 transitions, 8266 flow [2021-03-26 03:33:00,293 INFO L129 PetriNetUnfolder]: 0/521 cut-off events. [2021-03-26 03:33:00,293 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:33:00,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4521 conditions, 521 events. 0/521 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1924 event pairs, 0 based on Foata normal form. 0/434 useless extension candidates. Maximal degree in co-relation 0. Up to 87 conditions per place. [2021-03-26 03:33:00,294 INFO L82 GeneralOperation]: Start removeDead. Operand has 436 places, 263 transitions, 8266 flow [2021-03-26 03:33:00,296 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 434 places, 261 transitions, 8262 flow [2021-03-26 03:33:00,296 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:33:00,296 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 434 places, 261 transitions, 8262 flow [2021-03-26 03:33:00,296 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 434 places, 261 transitions, 8262 flow [2021-03-26 03:33:00,298 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 434 places, 261 transitions, 8262 flow [2021-03-26 03:33:00,386 INFO L129 PetriNetUnfolder]: 0/347 cut-off events. [2021-03-26 03:33:00,386 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:33:00,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4347 conditions, 347 events. 0/347 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1095 event pairs, 0 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 0. Up to 87 conditions per place. [2021-03-26 03:33:00,423 INFO L142 LiptonReduction]: Number of co-enabled transitions 44548 [2021-03-26 03:33:23,140 INFO L154 LiptonReduction]: Checked pairs total: 18447 [2021-03-26 03:33:23,140 INFO L156 LiptonReduction]: Total number of compositions: 86 [2021-03-26 03:33:23,140 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 22844 [2021-03-26 03:33:23,143 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:33:23,143 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:33:23,143 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:33:23,143 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:33:23,143 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:33:23,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:33:23,146 INFO L82 PathProgramCache]: Analyzing trace with hash 490915, now seen corresponding path program 1 times [2021-03-26 03:33:23,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:33:23,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909035684] [2021-03-26 03:33:23,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:33:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:33:23,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:33:23,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:33:23,171 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 03:33:23,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909035684] [2021-03-26 03:33:23,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:33:23,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:33:23,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034651114] [2021-03-26 03:33:23,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:33:23,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:33:23,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:33:23,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:33:23,173 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 349 [2021-03-26 03:33:23,173 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 175 transitions, 8090 flow. Second operand has 3 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 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 03:33:23,173 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:33:23,173 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 349 [2021-03-26 03:33:23,173 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:33:23,232 INFO L129 PetriNetUnfolder]: 0/174 cut-off events. [2021-03-26 03:33:23,232 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:33:23,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4176 conditions, 174 events. 0/174 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 182 event pairs, 0 based on Foata normal form. 87/261 useless extension candidates. Maximal degree in co-relation 0. Up to 87 conditions per place. [2021-03-26 03:33:23,233 INFO L132 encePairwiseOnDemand]: 347/349 looper letters, 0 selfloop transitions, 1 changer transitions 0/174 dead transitions. [2021-03-26 03:33:23,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 174 transitions, 8090 flow [2021-03-26 03:33:23,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:33:23,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:33:23,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1040 transitions. [2021-03-26 03:33:23,233 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9933142311365807 [2021-03-26 03:33:23,234 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1040 transitions. [2021-03-26 03:33:23,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1040 transitions. [2021-03-26 03:33:23,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:33:23,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1040 transitions. [2021-03-26 03:33:23,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 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 03:33:23,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 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 03:33:23,235 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 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 03:33:23,235 INFO L185 Difference]: Start difference. First operand has 348 places, 175 transitions, 8090 flow. Second operand 3 states and 1040 transitions. [2021-03-26 03:33:23,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 174 transitions, 8090 flow [2021-03-26 03:33:23,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 174 transitions, 780 flow, removed 3655 selfloop flow, removed 0 redundant places. [2021-03-26 03:33:23,439 INFO L241 Difference]: Finished difference. Result has 349 places, 174 transitions, 780 flow [2021-03-26 03:33:23,439 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=780, PETRI_PLACES=349, PETRI_TRANSITIONS=174} [2021-03-26 03:33:23,439 INFO L343 CegarLoopForPetriNet]: 348 programPoint places, 1 predicate places. [2021-03-26 03:33:23,439 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:33:23,440 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 349 places, 174 transitions, 780 flow [2021-03-26 03:33:23,440 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 349 places, 174 transitions, 780 flow [2021-03-26 03:33:23,440 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 349 places, 174 transitions, 780 flow [2021-03-26 03:33:23,463 INFO L129 PetriNetUnfolder]: 0/174 cut-off events. [2021-03-26 03:33:23,463 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:33:23,463 INFO L84 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 174 events. 0/174 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 178 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 0. Up to 87 conditions per place. [2021-03-26 03:33:23,467 INFO L142 LiptonReduction]: Number of co-enabled transitions 14792 [2021-03-26 03:33:23,476 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:33:23,476 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:33:23,476 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 37 [2021-03-26 03:33:23,479 INFO L480 AbstractCegarLoop]: Abstraction has has 349 places, 174 transitions, 780 flow [2021-03-26 03:33:23,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 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 03:33:23,479 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:33:23,479 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:33:23,479 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-03-26 03:33:23,479 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:33:23,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:33:23,479 INFO L82 PathProgramCache]: Analyzing trace with hash 466958825, now seen corresponding path program 1 times [2021-03-26 03:33:23,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:33:23,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911022819] [2021-03-26 03:33:23,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:33:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:33:23,497 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:33:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:33:23,498 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:33:23,512 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:33:23,512 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:33:23,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-03-26 03:33:23,513 WARN L342 ceAbstractionStarter]: 86 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:33:23,513 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 87 thread instances. [2021-03-26 03:33:23,622 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:33:23,622 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:33:23,622 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:33:23,622 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:33:23,622 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:33:23,622 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:33:23,622 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:33:23,623 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:33:23,623 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:33:23,623 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:33:23,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 441 places, 266 transitions, 8449 flow [2021-03-26 03:33:23,732 INFO L129 PetriNetUnfolder]: 0/527 cut-off events. [2021-03-26 03:33:23,732 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:33:23,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4617 conditions, 527 events. 0/527 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1944 event pairs, 0 based on Foata normal form. 0/439 useless extension candidates. Maximal degree in co-relation 0. Up to 88 conditions per place. [2021-03-26 03:33:23,733 INFO L82 GeneralOperation]: Start removeDead. Operand has 441 places, 266 transitions, 8449 flow [2021-03-26 03:33:23,735 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 439 places, 264 transitions, 8445 flow [2021-03-26 03:33:23,735 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:33:23,735 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 439 places, 264 transitions, 8445 flow [2021-03-26 03:33:23,735 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 439 places, 264 transitions, 8445 flow [2021-03-26 03:33:23,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 439 places, 264 transitions, 8445 flow [2021-03-26 03:33:23,825 INFO L129 PetriNetUnfolder]: 0/351 cut-off events. [2021-03-26 03:33:23,826 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:33:23,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4441 conditions, 351 events. 0/351 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 983 event pairs, 0 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 0. Up to 88 conditions per place. [2021-03-26 03:33:23,863 INFO L142 LiptonReduction]: Number of co-enabled transitions 45588 [2021-03-26 03:33:48,224 INFO L154 LiptonReduction]: Checked pairs total: 18879 [2021-03-26 03:33:48,224 INFO L156 LiptonReduction]: Total number of compositions: 87 [2021-03-26 03:33:48,224 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 24489 [2021-03-26 03:33:48,228 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:33:48,228 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:33:48,228 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:33:48,228 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:33:48,228 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:33:48,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:33:48,228 INFO L82 PathProgramCache]: Analyzing trace with hash 502179, now seen corresponding path program 1 times [2021-03-26 03:33:48,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:33:48,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624706664] [2021-03-26 03:33:48,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:33:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:33:48,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:33:48,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:33:48,255 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 03:33:48,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624706664] [2021-03-26 03:33:48,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:33:48,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:33:48,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809535730] [2021-03-26 03:33:48,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:33:48,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:33:48,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:33:48,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:33:48,256 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 353 [2021-03-26 03:33:48,256 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 177 transitions, 8271 flow. Second operand has 3 states, 3 states have (on average 350.6666666666667) internal successors, (1052), 3 states have internal predecessors, (1052), 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 03:33:48,256 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:33:48,256 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 353 [2021-03-26 03:33:48,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:33:48,319 INFO L129 PetriNetUnfolder]: 0/176 cut-off events. [2021-03-26 03:33:48,319 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:33:48,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4268 conditions, 176 events. 0/176 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 177 event pairs, 0 based on Foata normal form. 88/264 useless extension candidates. Maximal degree in co-relation 0. Up to 88 conditions per place. [2021-03-26 03:33:48,320 INFO L132 encePairwiseOnDemand]: 351/353 looper letters, 0 selfloop transitions, 1 changer transitions 0/176 dead transitions. [2021-03-26 03:33:48,320 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 176 transitions, 8271 flow [2021-03-26 03:33:48,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:33:48,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:33:48,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1052 transitions. [2021-03-26 03:33:48,321 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9933899905571294 [2021-03-26 03:33:48,321 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1052 transitions. [2021-03-26 03:33:48,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1052 transitions. [2021-03-26 03:33:48,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:33:48,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1052 transitions. [2021-03-26 03:33:48,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 350.6666666666667) internal successors, (1052), 3 states have internal predecessors, (1052), 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 03:33:48,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 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 03:33:48,322 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 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 03:33:48,322 INFO L185 Difference]: Start difference. First operand has 352 places, 177 transitions, 8271 flow. Second operand 3 states and 1052 transitions. [2021-03-26 03:33:48,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 176 transitions, 8271 flow [2021-03-26 03:33:48,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 176 transitions, 789 flow, removed 3741 selfloop flow, removed 0 redundant places. [2021-03-26 03:33:48,541 INFO L241 Difference]: Finished difference. Result has 353 places, 176 transitions, 789 flow [2021-03-26 03:33:48,541 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=789, PETRI_PLACES=353, PETRI_TRANSITIONS=176} [2021-03-26 03:33:48,541 INFO L343 CegarLoopForPetriNet]: 352 programPoint places, 1 predicate places. [2021-03-26 03:33:48,542 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:33:48,542 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 353 places, 176 transitions, 789 flow [2021-03-26 03:33:48,542 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 353 places, 176 transitions, 789 flow [2021-03-26 03:33:48,542 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 353 places, 176 transitions, 789 flow [2021-03-26 03:33:48,566 INFO L129 PetriNetUnfolder]: 0/176 cut-off events. [2021-03-26 03:33:48,566 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:33:48,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 176 events. 0/176 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 177 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 0. Up to 88 conditions per place. [2021-03-26 03:33:48,570 INFO L142 LiptonReduction]: Number of co-enabled transitions 15138 [2021-03-26 03:33:48,580 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:33:48,580 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:33:48,580 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 38 [2021-03-26 03:33:48,583 INFO L480 AbstractCegarLoop]: Abstraction has has 353 places, 176 transitions, 789 flow [2021-03-26 03:33:48,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 350.6666666666667) internal successors, (1052), 3 states have internal predecessors, (1052), 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 03:33:48,583 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:33:48,583 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:33:48,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-03-26 03:33:48,584 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:33:48,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:33:48,584 INFO L82 PathProgramCache]: Analyzing trace with hash -307648862, now seen corresponding path program 1 times [2021-03-26 03:33:48,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:33:48,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489454265] [2021-03-26 03:33:48,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:33:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:33:48,602 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:33:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:33:48,604 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:33:48,619 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:33:48,619 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:33:48,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-03-26 03:33:48,619 WARN L342 ceAbstractionStarter]: 87 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:33:48,619 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 88 thread instances. [2021-03-26 03:33:48,737 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:33:48,738 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:33:48,738 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:33:48,738 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:33:48,738 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:33:48,738 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:33:48,738 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:33:48,738 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:33:48,738 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:33:48,738 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:33:48,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 446 places, 269 transitions, 8634 flow [2021-03-26 03:33:48,854 INFO L129 PetriNetUnfolder]: 0/533 cut-off events. [2021-03-26 03:33:48,854 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:33:48,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4714 conditions, 533 events. 0/533 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1958 event pairs, 0 based on Foata normal form. 0/444 useless extension candidates. Maximal degree in co-relation 0. Up to 89 conditions per place. [2021-03-26 03:33:48,854 INFO L82 GeneralOperation]: Start removeDead. Operand has 446 places, 269 transitions, 8634 flow [2021-03-26 03:33:48,857 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 444 places, 267 transitions, 8630 flow [2021-03-26 03:33:48,857 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:33:48,857 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 444 places, 267 transitions, 8630 flow [2021-03-26 03:33:48,857 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 444 places, 267 transitions, 8630 flow [2021-03-26 03:33:48,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 444 places, 267 transitions, 8630 flow [2021-03-26 03:33:48,952 INFO L129 PetriNetUnfolder]: 0/355 cut-off events. [2021-03-26 03:33:48,952 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:33:48,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4536 conditions, 355 events. 0/355 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1148 event pairs, 0 based on Foata normal form. 0/355 useless extension candidates. Maximal degree in co-relation 0. Up to 89 conditions per place. [2021-03-26 03:33:48,991 INFO L142 LiptonReduction]: Number of co-enabled transitions 46640 [2021-03-26 03:34:15,074 INFO L154 LiptonReduction]: Checked pairs total: 19316 [2021-03-26 03:34:15,074 INFO L156 LiptonReduction]: Total number of compositions: 88 [2021-03-26 03:34:15,075 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26218 [2021-03-26 03:34:15,078 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:34:15,078 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:34:15,078 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:34:15,078 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:34:15,078 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:34:15,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:34:15,078 INFO L82 PathProgramCache]: Analyzing trace with hash 513571, now seen corresponding path program 1 times [2021-03-26 03:34:15,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:34:15,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974614542] [2021-03-26 03:34:15,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:34:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:34:15,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:34:15,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:34:15,105 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 03:34:15,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974614542] [2021-03-26 03:34:15,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:34:15,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:34:15,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259206737] [2021-03-26 03:34:15,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:34:15,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:34:15,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:34:15,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:34:15,106 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 354 out of 357 [2021-03-26 03:34:15,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 179 transitions, 8454 flow. Second operand has 3 states, 3 states have (on average 354.6666666666667) internal successors, (1064), 3 states have internal predecessors, (1064), 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 03:34:15,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:34:15,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 354 of 357 [2021-03-26 03:34:15,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:34:15,170 INFO L129 PetriNetUnfolder]: 0/178 cut-off events. [2021-03-26 03:34:15,170 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:34:15,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4361 conditions, 178 events. 0/178 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 190 event pairs, 0 based on Foata normal form. 89/267 useless extension candidates. Maximal degree in co-relation 0. Up to 89 conditions per place. [2021-03-26 03:34:15,170 INFO L132 encePairwiseOnDemand]: 355/357 looper letters, 0 selfloop transitions, 1 changer transitions 0/178 dead transitions. [2021-03-26 03:34:15,170 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 178 transitions, 8454 flow [2021-03-26 03:34:15,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:34:15,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:34:15,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1064 transitions. [2021-03-26 03:34:15,171 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9934640522875817 [2021-03-26 03:34:15,171 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1064 transitions. [2021-03-26 03:34:15,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1064 transitions. [2021-03-26 03:34:15,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:34:15,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1064 transitions. [2021-03-26 03:34:15,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 354.6666666666667) internal successors, (1064), 3 states have internal predecessors, (1064), 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 03:34:15,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 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 03:34:15,172 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 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 03:34:15,172 INFO L185 Difference]: Start difference. First operand has 356 places, 179 transitions, 8454 flow. Second operand 3 states and 1064 transitions. [2021-03-26 03:34:15,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 178 transitions, 8454 flow [2021-03-26 03:34:15,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 178 transitions, 798 flow, removed 3828 selfloop flow, removed 0 redundant places. [2021-03-26 03:34:15,404 INFO L241 Difference]: Finished difference. Result has 357 places, 178 transitions, 798 flow [2021-03-26 03:34:15,404 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=798, PETRI_PLACES=357, PETRI_TRANSITIONS=178} [2021-03-26 03:34:15,405 INFO L343 CegarLoopForPetriNet]: 356 programPoint places, 1 predicate places. [2021-03-26 03:34:15,405 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:34:15,405 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 357 places, 178 transitions, 798 flow [2021-03-26 03:34:15,405 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 357 places, 178 transitions, 798 flow [2021-03-26 03:34:15,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 357 places, 178 transitions, 798 flow [2021-03-26 03:34:15,430 INFO L129 PetriNetUnfolder]: 0/178 cut-off events. [2021-03-26 03:34:15,430 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:34:15,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 533 conditions, 178 events. 0/178 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 154 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 0. Up to 89 conditions per place. [2021-03-26 03:34:15,434 INFO L142 LiptonReduction]: Number of co-enabled transitions 15488 [2021-03-26 03:34:15,444 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:34:15,444 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:34:15,445 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 40 [2021-03-26 03:34:15,448 INFO L480 AbstractCegarLoop]: Abstraction has has 357 places, 178 transitions, 798 flow [2021-03-26 03:34:15,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 354.6666666666667) internal successors, (1064), 3 states have internal predecessors, (1064), 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 03:34:15,448 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:34:15,448 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:34:15,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-03-26 03:34:15,448 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:34:15,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:34:15,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1917844908, now seen corresponding path program 1 times [2021-03-26 03:34:15,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:34:15,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861912480] [2021-03-26 03:34:15,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:34:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:34:15,468 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:34:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:34:15,470 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:34:15,485 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:34:15,485 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:34:15,486 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-03-26 03:34:15,486 WARN L342 ceAbstractionStarter]: 88 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:34:15,486 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 89 thread instances. [2021-03-26 03:34:15,619 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:34:15,620 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:34:15,620 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:34:15,620 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:34:15,620 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:34:15,620 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:34:15,620 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:34:15,620 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:34:15,620 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:34:15,620 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:34:15,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 451 places, 272 transitions, 8821 flow [2021-03-26 03:34:15,739 INFO L129 PetriNetUnfolder]: 0/539 cut-off events. [2021-03-26 03:34:15,739 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:34:15,739 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4812 conditions, 539 events. 0/539 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2051 event pairs, 0 based on Foata normal form. 0/449 useless extension candidates. Maximal degree in co-relation 0. Up to 90 conditions per place. [2021-03-26 03:34:15,739 INFO L82 GeneralOperation]: Start removeDead. Operand has 451 places, 272 transitions, 8821 flow [2021-03-26 03:34:15,742 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 449 places, 270 transitions, 8817 flow [2021-03-26 03:34:15,742 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:34:15,742 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 449 places, 270 transitions, 8817 flow [2021-03-26 03:34:15,742 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 449 places, 270 transitions, 8817 flow [2021-03-26 03:34:15,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 449 places, 270 transitions, 8817 flow [2021-03-26 03:34:15,839 INFO L129 PetriNetUnfolder]: 0/359 cut-off events. [2021-03-26 03:34:15,840 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:34:15,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4632 conditions, 359 events. 0/359 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1034 event pairs, 0 based on Foata normal form. 0/359 useless extension candidates. Maximal degree in co-relation 0. Up to 90 conditions per place. [2021-03-26 03:34:15,880 INFO L142 LiptonReduction]: Number of co-enabled transitions 47704 [2021-03-26 03:34:44,699 INFO L154 LiptonReduction]: Checked pairs total: 19758 [2021-03-26 03:34:44,699 INFO L156 LiptonReduction]: Total number of compositions: 89 [2021-03-26 03:34:44,699 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 28957 [2021-03-26 03:34:44,703 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:34:44,703 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:34:44,703 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:34:44,703 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:34:44,703 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:34:44,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:34:44,703 INFO L82 PathProgramCache]: Analyzing trace with hash 525091, now seen corresponding path program 1 times [2021-03-26 03:34:44,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:34:44,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653885988] [2021-03-26 03:34:44,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:34:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:34:44,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:34:44,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:34:44,731 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 03:34:44,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653885988] [2021-03-26 03:34:44,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:34:44,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:34:44,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017303958] [2021-03-26 03:34:44,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:34:44,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:34:44,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:34:44,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:34:44,733 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 358 out of 361 [2021-03-26 03:34:44,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 181 transitions, 8639 flow. Second operand has 3 states, 3 states have (on average 358.6666666666667) internal successors, (1076), 3 states have internal predecessors, (1076), 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 03:34:44,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:34:44,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 358 of 361 [2021-03-26 03:34:44,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:34:44,798 INFO L129 PetriNetUnfolder]: 0/180 cut-off events. [2021-03-26 03:34:44,798 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:34:44,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4455 conditions, 180 events. 0/180 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 179 event pairs, 0 based on Foata normal form. 90/270 useless extension candidates. Maximal degree in co-relation 0. Up to 90 conditions per place. [2021-03-26 03:34:44,799 INFO L132 encePairwiseOnDemand]: 359/361 looper letters, 0 selfloop transitions, 1 changer transitions 0/180 dead transitions. [2021-03-26 03:34:44,799 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 180 transitions, 8639 flow [2021-03-26 03:34:44,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:34:44,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:34:44,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1076 transitions. [2021-03-26 03:34:44,799 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9935364727608494 [2021-03-26 03:34:44,800 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1076 transitions. [2021-03-26 03:34:44,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1076 transitions. [2021-03-26 03:34:44,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:34:44,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1076 transitions. [2021-03-26 03:34:44,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 358.6666666666667) internal successors, (1076), 3 states have internal predecessors, (1076), 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 03:34:44,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 361.0) internal successors, (1444), 4 states have internal predecessors, (1444), 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 03:34:44,801 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 361.0) internal successors, (1444), 4 states have internal predecessors, (1444), 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 03:34:44,801 INFO L185 Difference]: Start difference. First operand has 360 places, 181 transitions, 8639 flow. Second operand 3 states and 1076 transitions. [2021-03-26 03:34:44,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 180 transitions, 8639 flow [2021-03-26 03:34:45,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 180 transitions, 807 flow, removed 3916 selfloop flow, removed 0 redundant places. [2021-03-26 03:34:45,044 INFO L241 Difference]: Finished difference. Result has 361 places, 180 transitions, 807 flow [2021-03-26 03:34:45,044 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=361, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=807, PETRI_PLACES=361, PETRI_TRANSITIONS=180} [2021-03-26 03:34:45,045 INFO L343 CegarLoopForPetriNet]: 360 programPoint places, 1 predicate places. [2021-03-26 03:34:45,045 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:34:45,045 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 361 places, 180 transitions, 807 flow [2021-03-26 03:34:45,045 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 361 places, 180 transitions, 807 flow [2021-03-26 03:34:45,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 361 places, 180 transitions, 807 flow [2021-03-26 03:34:45,070 INFO L129 PetriNetUnfolder]: 0/180 cut-off events. [2021-03-26 03:34:45,070 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:34:45,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 180 events. 0/180 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 175 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 0. Up to 90 conditions per place. [2021-03-26 03:34:45,074 INFO L142 LiptonReduction]: Number of co-enabled transitions 15842 [2021-03-26 03:34:45,085 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:34:45,085 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:34:45,085 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 40 [2021-03-26 03:34:45,089 INFO L480 AbstractCegarLoop]: Abstraction has has 361 places, 180 transitions, 807 flow [2021-03-26 03:34:45,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 358.6666666666667) internal successors, (1076), 3 states have internal predecessors, (1076), 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 03:34:45,090 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:34:45,090 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:34:45,090 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-03-26 03:34:45,090 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:34:45,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:34:45,090 INFO L82 PathProgramCache]: Analyzing trace with hash -53025395, now seen corresponding path program 1 times [2021-03-26 03:34:45,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:34:45,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039348114] [2021-03-26 03:34:45,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:34:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:34:45,109 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:34:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:34:45,111 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:34:45,126 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:34:45,126 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:34:45,126 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-03-26 03:34:45,126 WARN L342 ceAbstractionStarter]: 89 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:34:45,126 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 90 thread instances. [2021-03-26 03:34:45,362 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:34:45,362 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:34:45,362 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:34:45,363 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:34:45,363 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:34:45,363 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:34:45,363 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:34:45,363 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:34:45,363 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:34:45,363 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:34:45,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 456 places, 275 transitions, 9010 flow [2021-03-26 03:34:45,484 INFO L129 PetriNetUnfolder]: 0/545 cut-off events. [2021-03-26 03:34:45,484 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:34:45,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4911 conditions, 545 events. 0/545 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2084 event pairs, 0 based on Foata normal form. 0/454 useless extension candidates. Maximal degree in co-relation 0. Up to 91 conditions per place. [2021-03-26 03:34:45,485 INFO L82 GeneralOperation]: Start removeDead. Operand has 456 places, 275 transitions, 9010 flow [2021-03-26 03:34:45,487 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 454 places, 273 transitions, 9006 flow [2021-03-26 03:34:45,487 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:34:45,488 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 454 places, 273 transitions, 9006 flow [2021-03-26 03:34:45,488 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 454 places, 273 transitions, 9006 flow [2021-03-26 03:34:45,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 454 places, 273 transitions, 9006 flow [2021-03-26 03:34:45,588 INFO L129 PetriNetUnfolder]: 0/363 cut-off events. [2021-03-26 03:34:45,588 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:34:45,588 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4729 conditions, 363 events. 0/363 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1007 event pairs, 0 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 0. Up to 91 conditions per place. [2021-03-26 03:34:45,630 INFO L142 LiptonReduction]: Number of co-enabled transitions 48780 [2021-03-26 03:35:15,625 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-03-26 03:35:17,131 INFO L154 LiptonReduction]: Checked pairs total: 20205 [2021-03-26 03:35:17,131 INFO L156 LiptonReduction]: Total number of compositions: 90 [2021-03-26 03:35:17,131 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 31644 [2021-03-26 03:35:17,135 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:35:17,135 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:35:17,135 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:35:17,136 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:35:17,136 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:35:17,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:35:17,136 INFO L82 PathProgramCache]: Analyzing trace with hash 536739, now seen corresponding path program 1 times [2021-03-26 03:35:17,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:35:17,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483684899] [2021-03-26 03:35:17,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:35:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:35:17,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:17,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:35:17,167 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 03:35:17,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483684899] [2021-03-26 03:35:17,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:35:17,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:35:17,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581686381] [2021-03-26 03:35:17,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:35:17,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:35:17,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:35:17,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:35:17,168 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 365 [2021-03-26 03:35:17,168 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 183 transitions, 8826 flow. Second operand has 3 states, 3 states have (on average 362.6666666666667) internal successors, (1088), 3 states have internal predecessors, (1088), 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 03:35:17,168 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:35:17,168 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 365 [2021-03-26 03:35:17,168 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:35:17,237 INFO L129 PetriNetUnfolder]: 0/182 cut-off events. [2021-03-26 03:35:17,237 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:35:17,238 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4550 conditions, 182 events. 0/182 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 156 event pairs, 0 based on Foata normal form. 91/273 useless extension candidates. Maximal degree in co-relation 0. Up to 91 conditions per place. [2021-03-26 03:35:17,238 INFO L132 encePairwiseOnDemand]: 363/365 looper letters, 0 selfloop transitions, 1 changer transitions 0/182 dead transitions. [2021-03-26 03:35:17,238 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 182 transitions, 8826 flow [2021-03-26 03:35:17,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:35:17,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:35:17,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1088 transitions. [2021-03-26 03:35:17,239 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.993607305936073 [2021-03-26 03:35:17,239 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1088 transitions. [2021-03-26 03:35:17,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1088 transitions. [2021-03-26 03:35:17,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:35:17,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1088 transitions. [2021-03-26 03:35:17,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 362.6666666666667) internal successors, (1088), 3 states have internal predecessors, (1088), 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 03:35:17,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 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 03:35:17,241 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 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 03:35:17,241 INFO L185 Difference]: Start difference. First operand has 364 places, 183 transitions, 8826 flow. Second operand 3 states and 1088 transitions. [2021-03-26 03:35:17,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 182 transitions, 8826 flow [2021-03-26 03:35:17,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 182 transitions, 816 flow, removed 4005 selfloop flow, removed 0 redundant places. [2021-03-26 03:35:17,510 INFO L241 Difference]: Finished difference. Result has 365 places, 182 transitions, 816 flow [2021-03-26 03:35:17,510 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=816, PETRI_PLACES=365, PETRI_TRANSITIONS=182} [2021-03-26 03:35:17,510 INFO L343 CegarLoopForPetriNet]: 364 programPoint places, 1 predicate places. [2021-03-26 03:35:17,510 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:35:17,510 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 365 places, 182 transitions, 816 flow [2021-03-26 03:35:17,510 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 365 places, 182 transitions, 816 flow [2021-03-26 03:35:17,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 365 places, 182 transitions, 816 flow [2021-03-26 03:35:17,536 INFO L129 PetriNetUnfolder]: 0/182 cut-off events. [2021-03-26 03:35:17,537 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:35:17,537 INFO L84 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 182 events. 0/182 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 162 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 0. Up to 91 conditions per place. [2021-03-26 03:35:17,541 INFO L142 LiptonReduction]: Number of co-enabled transitions 16200 [2021-03-26 03:35:17,553 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:35:17,553 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:35:17,553 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 43 [2021-03-26 03:35:17,556 INFO L480 AbstractCegarLoop]: Abstraction has has 365 places, 182 transitions, 816 flow [2021-03-26 03:35:17,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 362.6666666666667) internal successors, (1088), 3 states have internal predecessors, (1088), 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 03:35:17,557 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:35:17,557 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:35:17,557 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-03-26 03:35:17,557 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:35:17,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:35:17,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1850711697, now seen corresponding path program 1 times [2021-03-26 03:35:17,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:35:17,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628751028] [2021-03-26 03:35:17,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:35:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:35:17,577 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:35:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:35:17,579 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:35:17,595 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:35:17,595 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:35:17,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-03-26 03:35:17,595 WARN L342 ceAbstractionStarter]: 90 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:35:17,595 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 91 thread instances. [2021-03-26 03:35:17,747 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:35:17,748 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:35:17,748 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:35:17,748 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:35:17,748 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:35:17,748 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:35:17,748 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:35:17,748 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:35:17,748 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:35:17,748 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:35:17,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 461 places, 278 transitions, 9201 flow [2021-03-26 03:35:17,874 INFO L129 PetriNetUnfolder]: 0/551 cut-off events. [2021-03-26 03:35:17,874 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:35:17,874 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5011 conditions, 551 events. 0/551 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1985 event pairs, 0 based on Foata normal form. 0/459 useless extension candidates. Maximal degree in co-relation 0. Up to 92 conditions per place. [2021-03-26 03:35:17,874 INFO L82 GeneralOperation]: Start removeDead. Operand has 461 places, 278 transitions, 9201 flow [2021-03-26 03:35:17,877 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 459 places, 276 transitions, 9197 flow [2021-03-26 03:35:17,877 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:35:17,877 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 459 places, 276 transitions, 9197 flow [2021-03-26 03:35:17,878 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 459 places, 276 transitions, 9197 flow [2021-03-26 03:35:17,880 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 459 places, 276 transitions, 9197 flow [2021-03-26 03:35:17,985 INFO L129 PetriNetUnfolder]: 0/367 cut-off events. [2021-03-26 03:35:17,985 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:35:17,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4827 conditions, 367 events. 0/367 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 979 event pairs, 0 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 0. Up to 92 conditions per place. [2021-03-26 03:35:18,028 INFO L142 LiptonReduction]: Number of co-enabled transitions 49868 [2021-03-26 03:35:52,311 INFO L154 LiptonReduction]: Checked pairs total: 20657 [2021-03-26 03:35:52,312 INFO L156 LiptonReduction]: Total number of compositions: 91 [2021-03-26 03:35:52,312 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 34435 [2021-03-26 03:35:52,315 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:35:52,315 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:35:52,315 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:35:52,316 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:35:52,316 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:35:52,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:35:52,316 INFO L82 PathProgramCache]: Analyzing trace with hash 548515, now seen corresponding path program 1 times [2021-03-26 03:35:52,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:35:52,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197233568] [2021-03-26 03:35:52,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:35:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:35:52,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:35:52,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:35:52,343 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 03:35:52,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197233568] [2021-03-26 03:35:52,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:35:52,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:35:52,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146202203] [2021-03-26 03:35:52,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:35:52,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:35:52,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:35:52,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:35:52,345 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 369 [2021-03-26 03:35:52,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 185 transitions, 9015 flow. Second operand has 3 states, 3 states have (on average 366.6666666666667) internal successors, (1100), 3 states have internal predecessors, (1100), 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 03:35:52,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:35:52,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 369 [2021-03-26 03:35:52,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:35:52,413 INFO L129 PetriNetUnfolder]: 0/184 cut-off events. [2021-03-26 03:35:52,413 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:35:52,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4646 conditions, 184 events. 0/184 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 189 event pairs, 0 based on Foata normal form. 92/276 useless extension candidates. Maximal degree in co-relation 0. Up to 92 conditions per place. [2021-03-26 03:35:52,414 INFO L132 encePairwiseOnDemand]: 367/369 looper letters, 0 selfloop transitions, 1 changer transitions 0/184 dead transitions. [2021-03-26 03:35:52,414 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 184 transitions, 9015 flow [2021-03-26 03:35:52,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:35:52,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:35:52,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1100 transitions. [2021-03-26 03:35:52,414 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.993676603432701 [2021-03-26 03:35:52,415 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1100 transitions. [2021-03-26 03:35:52,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1100 transitions. [2021-03-26 03:35:52,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:35:52,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1100 transitions. [2021-03-26 03:35:52,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 366.6666666666667) internal successors, (1100), 3 states have internal predecessors, (1100), 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 03:35:52,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 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 03:35:52,416 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 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 03:35:52,416 INFO L185 Difference]: Start difference. First operand has 368 places, 185 transitions, 9015 flow. Second operand 3 states and 1100 transitions. [2021-03-26 03:35:52,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 184 transitions, 9015 flow [2021-03-26 03:35:52,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 184 transitions, 825 flow, removed 4095 selfloop flow, removed 0 redundant places. [2021-03-26 03:35:52,680 INFO L241 Difference]: Finished difference. Result has 369 places, 184 transitions, 825 flow [2021-03-26 03:35:52,680 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=825, PETRI_PLACES=369, PETRI_TRANSITIONS=184} [2021-03-26 03:35:52,680 INFO L343 CegarLoopForPetriNet]: 368 programPoint places, 1 predicate places. [2021-03-26 03:35:52,680 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:35:52,680 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 369 places, 184 transitions, 825 flow [2021-03-26 03:35:52,680 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 369 places, 184 transitions, 825 flow [2021-03-26 03:35:52,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 369 places, 184 transitions, 825 flow [2021-03-26 03:35:52,706 INFO L129 PetriNetUnfolder]: 0/184 cut-off events. [2021-03-26 03:35:52,706 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:35:52,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 184 events. 0/184 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 189 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 0. Up to 92 conditions per place. [2021-03-26 03:35:52,711 INFO L142 LiptonReduction]: Number of co-enabled transitions 16562 [2021-03-26 03:35:52,721 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:35:52,721 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:35:52,721 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 41 [2021-03-26 03:35:52,725 INFO L480 AbstractCegarLoop]: Abstraction has has 369 places, 184 transitions, 825 flow [2021-03-26 03:35:52,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 366.6666666666667) internal successors, (1100), 3 states have internal predecessors, (1100), 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 03:35:52,725 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:35:52,725 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:35:52,725 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-03-26 03:35:52,726 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:35:52,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:35:52,726 INFO L82 PathProgramCache]: Analyzing trace with hash 815608456, now seen corresponding path program 1 times [2021-03-26 03:35:52,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:35:52,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944975706] [2021-03-26 03:35:52,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:35:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:35:52,745 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:35:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:35:52,747 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:35:52,763 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:35:52,763 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:35:52,763 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-03-26 03:35:52,763 WARN L342 ceAbstractionStarter]: 91 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:35:52,763 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 92 thread instances. [2021-03-26 03:35:52,913 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:35:52,914 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:35:52,914 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:35:52,914 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:35:52,914 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:35:52,914 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:35:52,914 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:35:52,914 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:35:52,914 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:35:52,914 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:35:52,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 466 places, 281 transitions, 9394 flow [2021-03-26 03:35:53,139 INFO L129 PetriNetUnfolder]: 0/557 cut-off events. [2021-03-26 03:35:53,140 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:35:53,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5112 conditions, 557 events. 0/557 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2112 event pairs, 0 based on Foata normal form. 0/464 useless extension candidates. Maximal degree in co-relation 0. Up to 93 conditions per place. [2021-03-26 03:35:53,140 INFO L82 GeneralOperation]: Start removeDead. Operand has 466 places, 281 transitions, 9394 flow [2021-03-26 03:35:53,143 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 464 places, 279 transitions, 9390 flow [2021-03-26 03:35:53,143 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:35:53,143 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 464 places, 279 transitions, 9390 flow [2021-03-26 03:35:53,143 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 464 places, 279 transitions, 9390 flow [2021-03-26 03:35:53,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 464 places, 279 transitions, 9390 flow [2021-03-26 03:35:53,247 INFO L129 PetriNetUnfolder]: 0/371 cut-off events. [2021-03-26 03:35:53,247 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:35:53,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4926 conditions, 371 events. 0/371 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1140 event pairs, 0 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 0. Up to 93 conditions per place. [2021-03-26 03:35:53,290 INFO L142 LiptonReduction]: Number of co-enabled transitions 50968 [2021-03-26 03:36:28,422 INFO L154 LiptonReduction]: Checked pairs total: 21114 [2021-03-26 03:36:28,423 INFO L156 LiptonReduction]: Total number of compositions: 92 [2021-03-26 03:36:28,423 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 35280 [2021-03-26 03:36:28,426 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:36:28,426 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:36:28,426 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:36:28,426 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:36:28,427 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:36:28,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:36:28,427 INFO L82 PathProgramCache]: Analyzing trace with hash 560419, now seen corresponding path program 1 times [2021-03-26 03:36:28,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:36:28,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76890851] [2021-03-26 03:36:28,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:36:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:36:28,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:36:28,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:36:28,456 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 03:36:28,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76890851] [2021-03-26 03:36:28,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:36:28,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:36:28,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700395412] [2021-03-26 03:36:28,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:36:28,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:36:28,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:36:28,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:36:28,458 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 373 [2021-03-26 03:36:28,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 187 transitions, 9206 flow. Second operand has 3 states, 3 states have (on average 370.6666666666667) internal successors, (1112), 3 states have internal predecessors, (1112), 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 03:36:28,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:36:28,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 373 [2021-03-26 03:36:28,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:36:28,528 INFO L129 PetriNetUnfolder]: 0/186 cut-off events. [2021-03-26 03:36:28,529 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:36:28,529 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4743 conditions, 186 events. 0/186 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 228 event pairs, 0 based on Foata normal form. 93/279 useless extension candidates. Maximal degree in co-relation 0. Up to 93 conditions per place. [2021-03-26 03:36:28,529 INFO L132 encePairwiseOnDemand]: 371/373 looper letters, 0 selfloop transitions, 1 changer transitions 0/186 dead transitions. [2021-03-26 03:36:28,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 186 transitions, 9206 flow [2021-03-26 03:36:28,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:36:28,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:36:28,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1112 transitions. [2021-03-26 03:36:28,530 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9937444146559428 [2021-03-26 03:36:28,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1112 transitions. [2021-03-26 03:36:28,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1112 transitions. [2021-03-26 03:36:28,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:36:28,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1112 transitions. [2021-03-26 03:36:28,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 370.6666666666667) internal successors, (1112), 3 states have internal predecessors, (1112), 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 03:36:28,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 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 03:36:28,531 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 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 03:36:28,531 INFO L185 Difference]: Start difference. First operand has 372 places, 187 transitions, 9206 flow. Second operand 3 states and 1112 transitions. [2021-03-26 03:36:28,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 186 transitions, 9206 flow [2021-03-26 03:36:28,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 186 transitions, 834 flow, removed 4186 selfloop flow, removed 0 redundant places. [2021-03-26 03:36:28,806 INFO L241 Difference]: Finished difference. Result has 373 places, 186 transitions, 834 flow [2021-03-26 03:36:28,807 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=834, PETRI_PLACES=373, PETRI_TRANSITIONS=186} [2021-03-26 03:36:28,807 INFO L343 CegarLoopForPetriNet]: 372 programPoint places, 1 predicate places. [2021-03-26 03:36:28,807 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:36:28,807 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 373 places, 186 transitions, 834 flow [2021-03-26 03:36:28,807 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 373 places, 186 transitions, 834 flow [2021-03-26 03:36:28,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 373 places, 186 transitions, 834 flow [2021-03-26 03:36:28,834 INFO L129 PetriNetUnfolder]: 0/186 cut-off events. [2021-03-26 03:36:28,834 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:36:28,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 557 conditions, 186 events. 0/186 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 180 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 0. Up to 93 conditions per place. [2021-03-26 03:36:28,839 INFO L142 LiptonReduction]: Number of co-enabled transitions 16928 [2021-03-26 03:36:28,851 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:36:28,851 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:36:28,851 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 44 [2021-03-26 03:36:28,854 INFO L480 AbstractCegarLoop]: Abstraction has has 373 places, 186 transitions, 834 flow [2021-03-26 03:36:28,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 370.6666666666667) internal successors, (1112), 3 states have internal predecessors, (1112), 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 03:36:28,854 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:36:28,854 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:36:28,855 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-03-26 03:36:28,855 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:36:28,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:36:28,855 INFO L82 PathProgramCache]: Analyzing trace with hash 680422194, now seen corresponding path program 1 times [2021-03-26 03:36:28,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:36:28,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461244139] [2021-03-26 03:36:28,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:36:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:36:28,875 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:36:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:36:28,877 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:36:28,893 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:36:28,893 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:36:28,893 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-03-26 03:36:28,893 WARN L342 ceAbstractionStarter]: 92 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:36:28,893 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 93 thread instances. [2021-03-26 03:36:29,048 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:36:29,048 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:36:29,049 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:36:29,049 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:36:29,049 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:36:29,049 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:36:29,049 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:36:29,049 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:36:29,049 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:36:29,049 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:36:29,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 471 places, 284 transitions, 9589 flow [2021-03-26 03:36:29,187 INFO L129 PetriNetUnfolder]: 0/563 cut-off events. [2021-03-26 03:36:29,187 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:36:29,187 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5214 conditions, 563 events. 0/563 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2093 event pairs, 0 based on Foata normal form. 0/469 useless extension candidates. Maximal degree in co-relation 0. Up to 94 conditions per place. [2021-03-26 03:36:29,187 INFO L82 GeneralOperation]: Start removeDead. Operand has 471 places, 284 transitions, 9589 flow [2021-03-26 03:36:29,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 469 places, 282 transitions, 9585 flow [2021-03-26 03:36:29,191 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:36:29,191 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 469 places, 282 transitions, 9585 flow [2021-03-26 03:36:29,191 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 469 places, 282 transitions, 9585 flow [2021-03-26 03:36:29,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 469 places, 282 transitions, 9585 flow [2021-03-26 03:36:29,300 INFO L129 PetriNetUnfolder]: 0/375 cut-off events. [2021-03-26 03:36:29,300 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:36:29,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5026 conditions, 375 events. 0/375 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1039 event pairs, 0 based on Foata normal form. 0/375 useless extension candidates. Maximal degree in co-relation 0. Up to 94 conditions per place. [2021-03-26 03:36:29,344 INFO L142 LiptonReduction]: Number of co-enabled transitions 52080 [2021-03-26 03:37:05,666 INFO L154 LiptonReduction]: Checked pairs total: 21576 [2021-03-26 03:37:05,666 INFO L156 LiptonReduction]: Total number of compositions: 93 [2021-03-26 03:37:05,667 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36476 [2021-03-26 03:37:05,670 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-03-26 03:37:05,670 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:37:05,670 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:37:05,670 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:37:05,670 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:37:05,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:37:05,674 INFO L82 PathProgramCache]: Analyzing trace with hash 572451, now seen corresponding path program 1 times [2021-03-26 03:37:05,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:37:05,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600807909] [2021-03-26 03:37:05,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:37:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:37:05,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:37:05,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:37:05,703 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 03:37:05,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600807909] [2021-03-26 03:37:05,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:37:05,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:37:05,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017380828] [2021-03-26 03:37:05,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:37:05,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:37:05,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:37:05,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:37:05,704 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 374 out of 377 [2021-03-26 03:37:05,704 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 189 transitions, 9399 flow. Second operand has 3 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 3 states have internal predecessors, (1124), 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 03:37:05,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:37:05,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 374 of 377 [2021-03-26 03:37:05,704 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:37:05,775 INFO L129 PetriNetUnfolder]: 0/188 cut-off events. [2021-03-26 03:37:05,776 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:37:05,776 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4841 conditions, 188 events. 0/188 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 205 event pairs, 0 based on Foata normal form. 94/282 useless extension candidates. Maximal degree in co-relation 0. Up to 94 conditions per place. [2021-03-26 03:37:05,776 INFO L132 encePairwiseOnDemand]: 375/377 looper letters, 0 selfloop transitions, 1 changer transitions 0/188 dead transitions. [2021-03-26 03:37:05,776 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 188 transitions, 9399 flow [2021-03-26 03:37:05,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:37:05,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:37:05,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1124 transitions. [2021-03-26 03:37:05,777 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9938107869142352 [2021-03-26 03:37:05,777 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1124 transitions. [2021-03-26 03:37:05,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1124 transitions. [2021-03-26 03:37:05,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:37:05,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1124 transitions. [2021-03-26 03:37:05,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 3 states have internal predecessors, (1124), 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 03:37:05,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 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 03:37:05,778 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 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 03:37:05,778 INFO L185 Difference]: Start difference. First operand has 376 places, 189 transitions, 9399 flow. Second operand 3 states and 1124 transitions. [2021-03-26 03:37:05,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 188 transitions, 9399 flow [2021-03-26 03:37:06,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 188 transitions, 843 flow, removed 4278 selfloop flow, removed 0 redundant places. [2021-03-26 03:37:06,070 INFO L241 Difference]: Finished difference. Result has 377 places, 188 transitions, 843 flow [2021-03-26 03:37:06,070 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=843, PETRI_PLACES=377, PETRI_TRANSITIONS=188} [2021-03-26 03:37:06,070 INFO L343 CegarLoopForPetriNet]: 376 programPoint places, 1 predicate places. [2021-03-26 03:37:06,070 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:37:06,070 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 377 places, 188 transitions, 843 flow [2021-03-26 03:37:06,070 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 377 places, 188 transitions, 843 flow [2021-03-26 03:37:06,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 377 places, 188 transitions, 843 flow [2021-03-26 03:37:06,097 INFO L129 PetriNetUnfolder]: 0/188 cut-off events. [2021-03-26 03:37:06,097 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:37:06,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 563 conditions, 188 events. 0/188 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 183 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 0. Up to 94 conditions per place. [2021-03-26 03:37:06,102 INFO L142 LiptonReduction]: Number of co-enabled transitions 17298 [2021-03-26 03:37:06,113 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:37:06,113 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:37:06,113 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 43 [2021-03-26 03:37:06,116 INFO L480 AbstractCegarLoop]: Abstraction has has 377 places, 188 transitions, 843 flow [2021-03-26 03:37:06,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 3 states have internal predecessors, (1124), 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 03:37:06,116 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:37:06,116 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:37:06,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-03-26 03:37:06,116 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:37:06,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:37:06,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1058408339, now seen corresponding path program 1 times [2021-03-26 03:37:06,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:37:06,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027629727] [2021-03-26 03:37:06,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:37:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:37:06,136 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:37:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:37:06,138 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:37:06,158 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:37:06,158 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:37:06,158 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-03-26 03:37:06,158 WARN L342 ceAbstractionStarter]: 93 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:37:06,158 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 94 thread instances. [2021-03-26 03:37:06,319 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:37:06,320 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:37:06,320 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:37:06,320 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:37:06,320 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:37:06,320 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:37:06,320 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:37:06,320 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:37:06,320 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:37:06,320 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:37:06,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 476 places, 287 transitions, 9786 flow [2021-03-26 03:37:06,461 INFO L129 PetriNetUnfolder]: 0/569 cut-off events. [2021-03-26 03:37:06,461 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:37:06,461 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5317 conditions, 569 events. 0/569 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2098 event pairs, 0 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 0. Up to 95 conditions per place. [2021-03-26 03:37:06,461 INFO L82 GeneralOperation]: Start removeDead. Operand has 476 places, 287 transitions, 9786 flow [2021-03-26 03:37:06,464 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 474 places, 285 transitions, 9782 flow [2021-03-26 03:37:06,464 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:37:06,464 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 474 places, 285 transitions, 9782 flow [2021-03-26 03:37:06,464 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 474 places, 285 transitions, 9782 flow [2021-03-26 03:37:06,467 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 474 places, 285 transitions, 9782 flow [2021-03-26 03:37:06,579 INFO L129 PetriNetUnfolder]: 0/379 cut-off events. [2021-03-26 03:37:06,580 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:37:06,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5127 conditions, 379 events. 0/379 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1177 event pairs, 0 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 0. Up to 95 conditions per place. [2021-03-26 03:37:06,627 INFO L142 LiptonReduction]: Number of co-enabled transitions 53204 [2021-03-26 03:37:31,404 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-03-26 03:37:46,218 INFO L154 LiptonReduction]: Checked pairs total: 22043 [2021-03-26 03:37:46,218 INFO L156 LiptonReduction]: Total number of compositions: 94 [2021-03-26 03:37:46,218 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 39754 [2021-03-26 03:37:46,222 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:37:46,222 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:37:46,222 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:37:46,222 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:37:46,222 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:37:46,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:37:46,225 INFO L82 PathProgramCache]: Analyzing trace with hash 584611, now seen corresponding path program 1 times [2021-03-26 03:37:46,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:37:46,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105442005] [2021-03-26 03:37:46,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:37:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:37:46,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:37:46,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:37:46,260 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 03:37:46,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105442005] [2021-03-26 03:37:46,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:37:46,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:37:46,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850149389] [2021-03-26 03:37:46,261 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:37:46,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:37:46,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:37:46,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:37:46,262 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 378 out of 381 [2021-03-26 03:37:46,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 191 transitions, 9594 flow. Second operand has 3 states, 3 states have (on average 378.6666666666667) internal successors, (1136), 3 states have internal predecessors, (1136), 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 03:37:46,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:37:46,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 378 of 381 [2021-03-26 03:37:46,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:37:46,335 INFO L129 PetriNetUnfolder]: 0/190 cut-off events. [2021-03-26 03:37:46,335 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:37:46,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4940 conditions, 190 events. 0/190 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 198 event pairs, 0 based on Foata normal form. 95/285 useless extension candidates. Maximal degree in co-relation 0. Up to 95 conditions per place. [2021-03-26 03:37:46,335 INFO L132 encePairwiseOnDemand]: 379/381 looper letters, 0 selfloop transitions, 1 changer transitions 0/190 dead transitions. [2021-03-26 03:37:46,335 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 190 transitions, 9594 flow [2021-03-26 03:37:46,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:37:46,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:37:46,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1136 transitions. [2021-03-26 03:37:46,336 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9938757655293088 [2021-03-26 03:37:46,336 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1136 transitions. [2021-03-26 03:37:46,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1136 transitions. [2021-03-26 03:37:46,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:37:46,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1136 transitions. [2021-03-26 03:37:46,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 378.6666666666667) internal successors, (1136), 3 states have internal predecessors, (1136), 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 03:37:46,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 381.0) internal successors, (1524), 4 states have internal predecessors, (1524), 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 03:37:46,338 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 381.0) internal successors, (1524), 4 states have internal predecessors, (1524), 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 03:37:46,338 INFO L185 Difference]: Start difference. First operand has 380 places, 191 transitions, 9594 flow. Second operand 3 states and 1136 transitions. [2021-03-26 03:37:46,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 190 transitions, 9594 flow [2021-03-26 03:37:46,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 190 transitions, 852 flow, removed 4371 selfloop flow, removed 0 redundant places. [2021-03-26 03:37:46,635 INFO L241 Difference]: Finished difference. Result has 381 places, 190 transitions, 852 flow [2021-03-26 03:37:46,635 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=852, PETRI_PLACES=381, PETRI_TRANSITIONS=190} [2021-03-26 03:37:46,635 INFO L343 CegarLoopForPetriNet]: 380 programPoint places, 1 predicate places. [2021-03-26 03:37:46,635 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:37:46,636 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 381 places, 190 transitions, 852 flow [2021-03-26 03:37:46,636 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 381 places, 190 transitions, 852 flow [2021-03-26 03:37:46,636 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 381 places, 190 transitions, 852 flow [2021-03-26 03:37:46,663 INFO L129 PetriNetUnfolder]: 0/190 cut-off events. [2021-03-26 03:37:46,663 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:37:46,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 190 events. 0/190 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 188 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 0. Up to 95 conditions per place. [2021-03-26 03:37:46,668 INFO L142 LiptonReduction]: Number of co-enabled transitions 17672 [2021-03-26 03:37:46,679 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:37:46,679 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:37:46,679 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 44 [2021-03-26 03:37:46,682 INFO L480 AbstractCegarLoop]: Abstraction has has 381 places, 190 transitions, 852 flow [2021-03-26 03:37:46,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 378.6666666666667) internal successors, (1136), 3 states have internal predecessors, (1136), 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 03:37:46,683 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:37:46,683 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:37:46,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-03-26 03:37:46,683 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:37:46,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:37:46,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1970217205, now seen corresponding path program 1 times [2021-03-26 03:37:46,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:37:46,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742922515] [2021-03-26 03:37:46,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:37:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:37:46,703 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:37:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:37:46,705 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:37:46,721 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:37:46,721 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:37:46,721 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-03-26 03:37:46,721 WARN L342 ceAbstractionStarter]: 94 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:37:46,721 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 95 thread instances. [2021-03-26 03:37:46,879 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:37:46,880 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:37:46,880 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:37:46,880 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:37:46,880 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:37:46,880 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:37:46,880 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:37:46,880 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:37:46,880 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:37:46,880 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:37:46,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 481 places, 290 transitions, 9985 flow [2021-03-26 03:37:47,021 INFO L129 PetriNetUnfolder]: 0/575 cut-off events. [2021-03-26 03:37:47,021 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:37:47,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5421 conditions, 575 events. 0/575 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2089 event pairs, 0 based on Foata normal form. 0/479 useless extension candidates. Maximal degree in co-relation 0. Up to 96 conditions per place. [2021-03-26 03:37:47,021 INFO L82 GeneralOperation]: Start removeDead. Operand has 481 places, 290 transitions, 9985 flow [2021-03-26 03:37:47,024 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 479 places, 288 transitions, 9981 flow [2021-03-26 03:37:47,024 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:37:47,024 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 479 places, 288 transitions, 9981 flow [2021-03-26 03:37:47,024 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 479 places, 288 transitions, 9981 flow [2021-03-26 03:37:47,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 479 places, 288 transitions, 9981 flow [2021-03-26 03:37:47,139 INFO L129 PetriNetUnfolder]: 0/383 cut-off events. [2021-03-26 03:37:47,140 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:37:47,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5229 conditions, 383 events. 0/383 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1077 event pairs, 0 based on Foata normal form. 0/383 useless extension candidates. Maximal degree in co-relation 0. Up to 96 conditions per place. [2021-03-26 03:37:47,187 INFO L142 LiptonReduction]: Number of co-enabled transitions 54340 [2021-03-26 03:38:27,841 INFO L154 LiptonReduction]: Checked pairs total: 22515 [2021-03-26 03:38:27,842 INFO L156 LiptonReduction]: Total number of compositions: 95 [2021-03-26 03:38:27,842 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 40818 [2021-03-26 03:38:27,845 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:38:27,845 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:38:27,845 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:38:27,845 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:38:27,845 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:38:27,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:38:27,848 INFO L82 PathProgramCache]: Analyzing trace with hash 596899, now seen corresponding path program 1 times [2021-03-26 03:38:27,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:38:27,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021384296] [2021-03-26 03:38:27,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:38:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:38:27,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:38:27,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:38:27,882 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 03:38:27,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021384296] [2021-03-26 03:38:27,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:38:27,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:38:27,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710294066] [2021-03-26 03:38:27,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:38:27,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:38:27,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:38:27,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:38:27,884 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 385 [2021-03-26 03:38:27,884 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 193 transitions, 9791 flow. Second operand has 3 states, 3 states have (on average 382.6666666666667) internal successors, (1148), 3 states have internal predecessors, (1148), 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 03:38:27,884 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:38:27,884 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 385 [2021-03-26 03:38:27,884 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:38:27,958 INFO L129 PetriNetUnfolder]: 0/192 cut-off events. [2021-03-26 03:38:27,958 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:38:27,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5040 conditions, 192 events. 0/192 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 185 event pairs, 0 based on Foata normal form. 96/288 useless extension candidates. Maximal degree in co-relation 0. Up to 96 conditions per place. [2021-03-26 03:38:27,959 INFO L132 encePairwiseOnDemand]: 383/385 looper letters, 0 selfloop transitions, 1 changer transitions 0/192 dead transitions. [2021-03-26 03:38:27,959 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 192 transitions, 9791 flow [2021-03-26 03:38:27,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:38:27,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:38:27,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1148 transitions. [2021-03-26 03:38:27,960 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9939393939393939 [2021-03-26 03:38:27,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1148 transitions. [2021-03-26 03:38:27,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1148 transitions. [2021-03-26 03:38:27,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:38:27,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1148 transitions. [2021-03-26 03:38:27,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 382.6666666666667) internal successors, (1148), 3 states have internal predecessors, (1148), 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 03:38:27,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 385.0) internal successors, (1540), 4 states have internal predecessors, (1540), 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 03:38:27,961 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 385.0) internal successors, (1540), 4 states have internal predecessors, (1540), 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 03:38:27,961 INFO L185 Difference]: Start difference. First operand has 384 places, 193 transitions, 9791 flow. Second operand 3 states and 1148 transitions. [2021-03-26 03:38:27,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 192 transitions, 9791 flow [2021-03-26 03:38:28,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 192 transitions, 861 flow, removed 4465 selfloop flow, removed 0 redundant places. [2021-03-26 03:38:28,259 INFO L241 Difference]: Finished difference. Result has 385 places, 192 transitions, 861 flow [2021-03-26 03:38:28,259 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=861, PETRI_PLACES=385, PETRI_TRANSITIONS=192} [2021-03-26 03:38:28,259 INFO L343 CegarLoopForPetriNet]: 384 programPoint places, 1 predicate places. [2021-03-26 03:38:28,259 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:38:28,259 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 385 places, 192 transitions, 861 flow [2021-03-26 03:38:28,259 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 385 places, 192 transitions, 861 flow [2021-03-26 03:38:28,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 385 places, 192 transitions, 861 flow [2021-03-26 03:38:28,287 INFO L129 PetriNetUnfolder]: 0/192 cut-off events. [2021-03-26 03:38:28,287 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:38:28,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 575 conditions, 192 events. 0/192 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 179 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 0. Up to 96 conditions per place. [2021-03-26 03:38:28,291 INFO L142 LiptonReduction]: Number of co-enabled transitions 18050 [2021-03-26 03:38:28,303 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:38:28,303 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:38:28,303 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 44 [2021-03-26 03:38:28,306 INFO L480 AbstractCegarLoop]: Abstraction has has 385 places, 192 transitions, 861 flow [2021-03-26 03:38:28,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 382.6666666666667) internal successors, (1148), 3 states have internal predecessors, (1148), 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 03:38:28,307 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:38:28,307 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:38:28,307 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-03-26 03:38:28,307 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:38:28,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:38:28,307 INFO L82 PathProgramCache]: Analyzing trace with hash -892477778, now seen corresponding path program 1 times [2021-03-26 03:38:28,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:38:28,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696901055] [2021-03-26 03:38:28,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:38:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:38:28,327 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:38:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:38:28,329 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:38:28,344 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:38:28,344 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:38:28,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-03-26 03:38:28,344 WARN L342 ceAbstractionStarter]: 95 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:38:28,344 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 96 thread instances. [2021-03-26 03:38:28,533 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:38:28,533 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:38:28,534 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:38:28,534 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:38:28,534 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:38:28,534 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:38:28,534 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:38:28,534 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:38:28,534 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:38:28,534 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:38:28,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 486 places, 293 transitions, 10186 flow [2021-03-26 03:38:28,674 INFO L129 PetriNetUnfolder]: 0/581 cut-off events. [2021-03-26 03:38:28,674 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:38:28,674 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5526 conditions, 581 events. 0/581 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2160 event pairs, 0 based on Foata normal form. 0/484 useless extension candidates. Maximal degree in co-relation 0. Up to 97 conditions per place. [2021-03-26 03:38:28,674 INFO L82 GeneralOperation]: Start removeDead. Operand has 486 places, 293 transitions, 10186 flow [2021-03-26 03:38:28,677 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 484 places, 291 transitions, 10182 flow [2021-03-26 03:38:28,677 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:38:28,678 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 484 places, 291 transitions, 10182 flow [2021-03-26 03:38:28,678 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 484 places, 291 transitions, 10182 flow [2021-03-26 03:38:28,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 484 places, 291 transitions, 10182 flow [2021-03-26 03:38:28,794 INFO L129 PetriNetUnfolder]: 0/387 cut-off events. [2021-03-26 03:38:28,794 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:38:28,794 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5332 conditions, 387 events. 0/387 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1030 event pairs, 0 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 0. Up to 97 conditions per place. [2021-03-26 03:38:28,842 INFO L142 LiptonReduction]: Number of co-enabled transitions 55488 [2021-03-26 03:39:12,088 INFO L154 LiptonReduction]: Checked pairs total: 22992 [2021-03-26 03:39:12,088 INFO L156 LiptonReduction]: Total number of compositions: 96 [2021-03-26 03:39:12,088 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 43411 [2021-03-26 03:39:12,092 INFO L129 PetriNetUnfolder]: 0/1 cut-off events. [2021-03-26 03:39:12,092 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:39:12,092 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:39:12,092 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1] [2021-03-26 03:39:12,092 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:39:12,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:39:12,092 INFO L82 PathProgramCache]: Analyzing trace with hash 609315, now seen corresponding path program 1 times [2021-03-26 03:39:12,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:39:12,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573153888] [2021-03-26 03:39:12,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:39:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:39:12,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:39:12,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:39:12,126 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 03:39:12,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573153888] [2021-03-26 03:39:12,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:39:12,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:39:12,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939648491] [2021-03-26 03:39:12,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:39:12,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:39:12,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:39:12,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:39:12,127 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 386 out of 389 [2021-03-26 03:39:12,128 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 195 transitions, 9990 flow. Second operand has 3 states, 3 states have (on average 386.6666666666667) internal successors, (1160), 3 states have internal predecessors, (1160), 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 03:39:12,128 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:39:12,128 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 386 of 389 [2021-03-26 03:39:12,128 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:39:12,205 INFO L129 PetriNetUnfolder]: 0/194 cut-off events. [2021-03-26 03:39:12,205 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:39:12,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5141 conditions, 194 events. 0/194 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 206 event pairs, 0 based on Foata normal form. 97/291 useless extension candidates. Maximal degree in co-relation 0. Up to 97 conditions per place. [2021-03-26 03:39:12,205 INFO L132 encePairwiseOnDemand]: 387/389 looper letters, 0 selfloop transitions, 1 changer transitions 0/194 dead transitions. [2021-03-26 03:39:12,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 194 transitions, 9990 flow [2021-03-26 03:39:12,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:39:12,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:39:12,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1160 transitions. [2021-03-26 03:39:12,206 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9940017137960583 [2021-03-26 03:39:12,206 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1160 transitions. [2021-03-26 03:39:12,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1160 transitions. [2021-03-26 03:39:12,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:39:12,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1160 transitions. [2021-03-26 03:39:12,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 386.6666666666667) internal successors, (1160), 3 states have internal predecessors, (1160), 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 03:39:12,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 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 03:39:12,208 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 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 03:39:12,208 INFO L185 Difference]: Start difference. First operand has 388 places, 195 transitions, 9990 flow. Second operand 3 states and 1160 transitions. [2021-03-26 03:39:12,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 194 transitions, 9990 flow [2021-03-26 03:39:12,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 194 transitions, 870 flow, removed 4560 selfloop flow, removed 0 redundant places. [2021-03-26 03:39:12,528 INFO L241 Difference]: Finished difference. Result has 389 places, 194 transitions, 870 flow [2021-03-26 03:39:12,528 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=870, PETRI_PLACES=389, PETRI_TRANSITIONS=194} [2021-03-26 03:39:12,529 INFO L343 CegarLoopForPetriNet]: 388 programPoint places, 1 predicate places. [2021-03-26 03:39:12,529 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:39:12,529 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 389 places, 194 transitions, 870 flow [2021-03-26 03:39:12,529 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 389 places, 194 transitions, 870 flow [2021-03-26 03:39:12,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 389 places, 194 transitions, 870 flow [2021-03-26 03:39:12,557 INFO L129 PetriNetUnfolder]: 0/194 cut-off events. [2021-03-26 03:39:12,557 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:39:12,557 INFO L84 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 194 events. 0/194 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 200 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 0. Up to 97 conditions per place. [2021-03-26 03:39:12,562 INFO L142 LiptonReduction]: Number of co-enabled transitions 18432 [2021-03-26 03:39:12,574 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:39:12,574 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:39:12,574 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 45 [2021-03-26 03:39:12,578 INFO L480 AbstractCegarLoop]: Abstraction has has 389 places, 194 transitions, 870 flow [2021-03-26 03:39:12,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 386.6666666666667) internal successors, (1160), 3 states have internal predecessors, (1160), 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 03:39:12,578 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:39:12,578 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:39:12,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-03-26 03:39:12,578 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:39:12,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:39:12,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1878751048, now seen corresponding path program 1 times [2021-03-26 03:39:12,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:39:12,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166736453] [2021-03-26 03:39:12,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:39:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:39:12,601 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:39:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 03:39:12,603 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 03:39:12,620 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 03:39:12,620 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 03:39:12,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-03-26 03:39:12,620 WARN L342 ceAbstractionStarter]: 96 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-26 03:39:12,620 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 97 thread instances. [2021-03-26 03:39:12,794 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:39:12,794 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:39:12,794 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:39:12,794 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:39:12,794 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:39:12,794 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:39:12,794 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:39:12,794 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:39:12,794 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:39:12,794 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:39:12,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 491 places, 296 transitions, 10389 flow [2021-03-26 03:39:12,938 INFO L129 PetriNetUnfolder]: 0/587 cut-off events. [2021-03-26 03:39:12,939 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:39:12,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5632 conditions, 587 events. 0/587 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2140 event pairs, 0 based on Foata normal form. 0/489 useless extension candidates. Maximal degree in co-relation 0. Up to 98 conditions per place. [2021-03-26 03:39:12,939 INFO L82 GeneralOperation]: Start removeDead. Operand has 491 places, 296 transitions, 10389 flow [2021-03-26 03:39:12,942 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 489 places, 294 transitions, 10385 flow [2021-03-26 03:39:12,942 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:39:12,942 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 489 places, 294 transitions, 10385 flow [2021-03-26 03:39:12,942 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 489 places, 294 transitions, 10385 flow [2021-03-26 03:39:12,945 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 489 places, 294 transitions, 10385 flow [2021-03-26 03:39:13,062 INFO L129 PetriNetUnfolder]: 0/391 cut-off events. [2021-03-26 03:39:13,062 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:39:13,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5436 conditions, 391 events. 0/391 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1153 event pairs, 0 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 0. Up to 98 conditions per place. [2021-03-26 03:39:13,112 INFO L142 LiptonReduction]: Number of co-enabled transitions 56648 Received shutdown request... [2021-03-26 03:39:40,994 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-26 03:39:40,996 WARN L224 ceAbstractionStarter]: Timeout [2021-03-26 03:39:40,996 INFO L202 PluginConnector]: Adding new model fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 03:39:40 BasicIcfg [2021-03-26 03:39:40,996 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 03:39:40,997 INFO L168 Benchmark]: Toolchain (without parser) took 790152.88 ms. Allocated memory was 255.9 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 236.8 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.5 GB. Max. memory is 16.0 GB. [2021-03-26 03:39:40,997 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.33 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.6 MB in the end (delta: 174.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 03:39:40,997 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.92 ms. Allocated memory is still 255.9 MB. Free memory was 236.7 MB in the beginning and 235.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 03:39:40,997 INFO L168 Benchmark]: Boogie Preprocessor took 10.68 ms. Allocated memory is still 255.9 MB. Free memory was 235.2 MB in the beginning and 234.3 MB in the end (delta: 848.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 03:39:40,997 INFO L168 Benchmark]: RCFGBuilder took 148.81 ms. Allocated memory is still 255.9 MB. Free memory was 234.3 MB in the beginning and 226.5 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-26 03:39:40,997 INFO L168 Benchmark]: TraceAbstraction took 789970.91 ms. Allocated memory was 255.9 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 226.1 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.5 GB. Max. memory is 16.0 GB. [2021-03-26 03:39:40,998 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 0.33 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.6 MB in the end (delta: 174.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 16.92 ms. Allocated memory is still 255.9 MB. Free memory was 236.7 MB in the beginning and 235.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 10.68 ms. Allocated memory is still 255.9 MB. Free memory was 235.2 MB in the beginning and 234.3 MB in the end (delta: 848.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 148.81 ms. Allocated memory is still 255.9 MB. Free memory was 234.3 MB in the beginning and 226.5 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 789970.91 ms. Allocated memory was 255.9 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 226.1 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.5 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.9ms, 9 PlacesBefore, 8 PlacesAfterwards, 6 TransitionsBefore, 5 TransitionsAfterwards, 8 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 2, 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: 2, positive: 2, positive conditional: 0, positive unconditional: 2, 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: 2, positive: 2, positive conditional: 0, positive unconditional: 2, 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: 2, positive: 2, positive conditional: 0, positive unconditional: 2, 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: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2, unknown conditional: 2, 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: 1.9ms, 9 PlacesBefore, 9 PlacesAfterwards, 4 TransitionsBefore, 4 TransitionsAfterwards, 2 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: 24.9ms, 14 PlacesBefore, 12 PlacesAfterwards, 9 TransitionsBefore, 7 TransitionsAfterwards, 28 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 9 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 9, 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: 9, positive: 9, positive conditional: 0, positive unconditional: 9, 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: 9, positive: 9, positive conditional: 0, positive unconditional: 9, 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: 9, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 9, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 9, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 9, unknown conditional: 9, 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, 13 PlacesBefore, 13 PlacesAfterwards, 6 TransitionsBefore, 6 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: 78.0ms, 19 PlacesBefore, 16 PlacesAfterwards, 12 TransitionsBefore, 9 TransitionsAfterwards, 60 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 21 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 21, positive: 21, positive conditional: 21, 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: 21, positive: 21, positive conditional: 0, positive unconditional: 21, 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: 21, positive: 21, positive conditional: 0, positive unconditional: 21, 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: 21, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 29, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 21, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 21, unknown conditional: 21, 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: 2.5ms, 17 PlacesBefore, 17 PlacesAfterwards, 8 TransitionsBefore, 8 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: 77.1ms, 24 PlacesBefore, 20 PlacesAfterwards, 15 TransitionsBefore, 11 TransitionsAfterwards, 104 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 38 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 38, positive: 38, positive conditional: 38, 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: 38, positive: 38, positive conditional: 0, positive unconditional: 38, 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: 38, positive: 38, positive conditional: 0, positive unconditional: 38, 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: 38, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 44, positive: 44, positive conditional: 0, positive unconditional: 44, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 38, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 38, unknown conditional: 38, 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: 2.6ms, 21 PlacesBefore, 21 PlacesAfterwards, 10 TransitionsBefore, 10 TransitionsAfterwards, 32 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: 104.7ms, 29 PlacesBefore, 24 PlacesAfterwards, 18 TransitionsBefore, 13 TransitionsAfterwards, 160 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 60 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 60, positive: 60, positive conditional: 60, 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: 60, positive: 60, positive conditional: 0, positive unconditional: 60, 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: 60, positive: 60, positive conditional: 0, positive unconditional: 60, 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: 60, positive: 40, positive conditional: 0, positive unconditional: 40, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 20, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ 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] ], Cache Queries: [ total: 60, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 60, unknown conditional: 60, 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: 2.5ms, 25 PlacesBefore, 25 PlacesAfterwards, 12 TransitionsBefore, 12 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: 115.2ms, 34 PlacesBefore, 28 PlacesAfterwards, 21 TransitionsBefore, 15 TransitionsAfterwards, 228 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 87 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 87, positive: 87, positive conditional: 87, 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: 87, positive: 87, positive conditional: 0, positive unconditional: 87, 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: 87, positive: 87, positive conditional: 0, positive unconditional: 87, 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: 87, positive: 57, positive conditional: 0, positive unconditional: 57, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 30, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ 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] ], Cache Queries: [ total: 87, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 87, unknown conditional: 87, 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, 29 PlacesBefore, 29 PlacesAfterwards, 14 TransitionsBefore, 14 TransitionsAfterwards, 72 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: 111.1ms, 39 PlacesBefore, 32 PlacesAfterwards, 24 TransitionsBefore, 17 TransitionsAfterwards, 308 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 119 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 119, positive: 119, positive conditional: 119, 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: 119, positive: 119, positive conditional: 0, positive unconditional: 119, 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: 119, positive: 119, positive conditional: 0, positive unconditional: 119, 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: 119, positive: 77, positive conditional: 0, positive unconditional: 77, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 42, positive: 42, positive conditional: 0, positive unconditional: 42, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 74, positive: 74, positive conditional: 0, positive unconditional: 74, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 119, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 119, unknown conditional: 119, 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: 4.0ms, 33 PlacesBefore, 33 PlacesAfterwards, 16 TransitionsBefore, 16 TransitionsAfterwards, 98 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: 133.4ms, 44 PlacesBefore, 36 PlacesAfterwards, 27 TransitionsBefore, 19 TransitionsAfterwards, 400 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 8 TotalNumberOfCompositions, 156 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 156, positive: 156, positive conditional: 156, 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: 156, positive: 156, positive conditional: 0, positive unconditional: 156, 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: 156, positive: 156, positive conditional: 0, positive unconditional: 156, 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: 156, positive: 100, positive conditional: 0, positive unconditional: 100, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 56, positive: 56, positive conditional: 0, positive unconditional: 56, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 89, positive: 89, positive conditional: 0, positive unconditional: 89, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 156, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 156, unknown conditional: 156, 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: 8.9ms, 37 PlacesBefore, 37 PlacesAfterwards, 18 TransitionsBefore, 18 TransitionsAfterwards, 128 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: 161.9ms, 49 PlacesBefore, 40 PlacesAfterwards, 30 TransitionsBefore, 21 TransitionsAfterwards, 504 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 9 TotalNumberOfCompositions, 198 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 198, positive: 198, positive conditional: 198, 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: 198, positive: 198, positive conditional: 0, positive unconditional: 198, 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: 198, positive: 198, positive conditional: 0, positive unconditional: 198, 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: 198, positive: 126, positive conditional: 0, positive unconditional: 126, negative: 72, negative conditional: 0, negative unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 72, positive: 72, positive conditional: 0, positive unconditional: 72, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 112, positive: 112, positive conditional: 0, positive unconditional: 112, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 198, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 198, unknown conditional: 198, 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: 2.5ms, 41 PlacesBefore, 41 PlacesAfterwards, 20 TransitionsBefore, 20 TransitionsAfterwards, 162 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: 231.5ms, 54 PlacesBefore, 44 PlacesAfterwards, 33 TransitionsBefore, 23 TransitionsAfterwards, 620 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 10 TotalNumberOfCompositions, 245 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 245, positive: 245, positive conditional: 245, 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: 245, positive: 245, positive conditional: 0, positive unconditional: 245, 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: 245, positive: 245, positive conditional: 0, positive unconditional: 245, 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: 245, positive: 155, positive conditional: 0, positive unconditional: 155, negative: 90, negative conditional: 0, negative unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 90, positive: 90, positive conditional: 0, positive unconditional: 90, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 130, positive: 130, positive conditional: 0, positive unconditional: 130, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 245, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 245, unknown conditional: 245, 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: 3.3ms, 45 PlacesBefore, 45 PlacesAfterwards, 22 TransitionsBefore, 22 TransitionsAfterwards, 200 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: 231.3ms, 59 PlacesBefore, 48 PlacesAfterwards, 36 TransitionsBefore, 25 TransitionsAfterwards, 748 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 11 TotalNumberOfCompositions, 297 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 297, positive: 297, positive conditional: 297, 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: 297, positive: 297, positive conditional: 0, positive unconditional: 297, 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: 297, positive: 297, positive conditional: 0, positive unconditional: 297, 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: 297, positive: 187, positive conditional: 0, positive unconditional: 187, negative: 110, negative conditional: 0, negative unconditional: 110, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 110, positive: 110, positive conditional: 0, positive unconditional: 110, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 173, positive: 173, positive conditional: 0, positive unconditional: 173, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 297, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 297, unknown conditional: 297, 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: 2.9ms, 49 PlacesBefore, 49 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 242 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: 227.6ms, 64 PlacesBefore, 52 PlacesAfterwards, 39 TransitionsBefore, 27 TransitionsAfterwards, 888 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 12 TotalNumberOfCompositions, 354 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 354, positive: 354, positive conditional: 354, 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: 354, positive: 354, positive conditional: 0, positive unconditional: 354, 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: 354, positive: 354, positive conditional: 0, positive unconditional: 354, 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: 354, positive: 222, positive conditional: 0, positive unconditional: 222, negative: 132, negative conditional: 0, negative unconditional: 132, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 132, positive: 132, positive conditional: 0, positive unconditional: 132, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 168, positive: 168, positive conditional: 0, positive unconditional: 168, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 354, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 354, unknown conditional: 354, 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: 3.0ms, 53 PlacesBefore, 53 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 288 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: 278.5ms, 69 PlacesBefore, 56 PlacesAfterwards, 42 TransitionsBefore, 29 TransitionsAfterwards, 1040 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 13 TotalNumberOfCompositions, 416 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 416, positive: 416, positive conditional: 416, 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: 416, positive: 416, positive conditional: 0, positive unconditional: 416, 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: 416, positive: 416, positive conditional: 0, positive unconditional: 416, 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: 416, positive: 260, positive conditional: 0, positive unconditional: 260, negative: 156, negative conditional: 0, negative unconditional: 156, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 156, positive: 156, positive conditional: 0, positive unconditional: 156, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 207, positive: 207, positive conditional: 0, positive unconditional: 207, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 416, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 416, unknown conditional: 416, 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: 3.7ms, 57 PlacesBefore, 57 PlacesAfterwards, 28 TransitionsBefore, 28 TransitionsAfterwards, 338 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: 315.8ms, 74 PlacesBefore, 60 PlacesAfterwards, 45 TransitionsBefore, 31 TransitionsAfterwards, 1204 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 14 TotalNumberOfCompositions, 483 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 483, positive: 483, positive conditional: 483, 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: 483, positive: 483, positive conditional: 0, positive unconditional: 483, 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: 483, positive: 483, positive conditional: 0, positive unconditional: 483, 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: 483, positive: 301, positive conditional: 0, positive unconditional: 301, negative: 182, negative conditional: 0, negative unconditional: 182, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 182, positive: 182, positive conditional: 0, positive unconditional: 182, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 242, positive: 242, positive conditional: 0, positive unconditional: 242, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 483, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 483, unknown conditional: 483, 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: 3.2ms, 61 PlacesBefore, 61 PlacesAfterwards, 30 TransitionsBefore, 30 TransitionsAfterwards, 392 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: 342.8ms, 79 PlacesBefore, 64 PlacesAfterwards, 48 TransitionsBefore, 33 TransitionsAfterwards, 1380 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 15 TotalNumberOfCompositions, 555 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 555, positive: 555, positive conditional: 555, 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: 555, positive: 555, positive conditional: 0, positive unconditional: 555, 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: 555, positive: 555, positive conditional: 0, positive unconditional: 555, 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: 555, positive: 345, positive conditional: 0, positive unconditional: 345, negative: 210, negative conditional: 0, negative unconditional: 210, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 210, positive: 210, positive conditional: 0, positive unconditional: 210, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 272, positive: 272, positive conditional: 0, positive unconditional: 272, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 555, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 555, unknown conditional: 555, 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, 65 PlacesBefore, 65 PlacesAfterwards, 32 TransitionsBefore, 32 TransitionsAfterwards, 450 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: 379.8ms, 84 PlacesBefore, 68 PlacesAfterwards, 51 TransitionsBefore, 35 TransitionsAfterwards, 1568 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 16 TotalNumberOfCompositions, 632 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 632, positive: 632, positive conditional: 632, 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: 632, positive: 632, positive conditional: 0, positive unconditional: 632, 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: 632, positive: 632, positive conditional: 0, positive unconditional: 632, 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: 632, positive: 392, positive conditional: 0, positive unconditional: 392, negative: 240, negative conditional: 0, negative unconditional: 240, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 240, positive: 240, positive conditional: 0, positive unconditional: 240, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 301, positive: 301, positive conditional: 0, positive unconditional: 301, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 632, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 632, unknown conditional: 632, 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: 3.9ms, 69 PlacesBefore, 69 PlacesAfterwards, 34 TransitionsBefore, 34 TransitionsAfterwards, 512 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: 407.4ms, 89 PlacesBefore, 72 PlacesAfterwards, 54 TransitionsBefore, 37 TransitionsAfterwards, 1768 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 17 TotalNumberOfCompositions, 714 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 714, positive: 714, positive conditional: 714, 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: 714, positive: 714, positive conditional: 0, positive unconditional: 714, 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: 714, positive: 714, positive conditional: 0, positive unconditional: 714, 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: 714, positive: 442, positive conditional: 0, positive unconditional: 442, negative: 272, negative conditional: 0, negative unconditional: 272, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 272, positive: 272, positive conditional: 0, positive unconditional: 272, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 324, positive: 324, positive conditional: 0, positive unconditional: 324, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 714, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 714, unknown conditional: 714, 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: 5.5ms, 73 PlacesBefore, 73 PlacesAfterwards, 36 TransitionsBefore, 36 TransitionsAfterwards, 578 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: 471.3ms, 94 PlacesBefore, 76 PlacesAfterwards, 57 TransitionsBefore, 39 TransitionsAfterwards, 1980 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 18 TotalNumberOfCompositions, 801 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 801, positive: 801, positive conditional: 801, 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: 801, positive: 801, positive conditional: 0, positive unconditional: 801, 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: 801, positive: 801, positive conditional: 0, positive unconditional: 801, 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: 801, positive: 495, positive conditional: 0, positive unconditional: 495, negative: 306, negative conditional: 0, negative unconditional: 306, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 306, positive: 306, positive conditional: 0, positive unconditional: 306, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 366, positive: 366, positive conditional: 0, positive unconditional: 366, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 801, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 801, unknown conditional: 801, 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: 4.6ms, 77 PlacesBefore, 77 PlacesAfterwards, 38 TransitionsBefore, 38 TransitionsAfterwards, 648 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: 491.7ms, 99 PlacesBefore, 80 PlacesAfterwards, 60 TransitionsBefore, 41 TransitionsAfterwards, 2204 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 19 TotalNumberOfCompositions, 893 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 893, positive: 893, positive conditional: 893, 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: 893, positive: 893, positive conditional: 0, positive unconditional: 893, 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: 893, positive: 893, positive conditional: 0, positive unconditional: 893, 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: 893, positive: 551, positive conditional: 0, positive unconditional: 551, negative: 342, negative conditional: 0, negative unconditional: 342, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 342, positive: 342, positive conditional: 0, positive unconditional: 342, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 396, positive: 396, positive conditional: 0, positive unconditional: 396, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 893, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 893, unknown conditional: 893, 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, 81 PlacesBefore, 81 PlacesAfterwards, 40 TransitionsBefore, 40 TransitionsAfterwards, 722 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: 629.2ms, 104 PlacesBefore, 84 PlacesAfterwards, 63 TransitionsBefore, 43 TransitionsAfterwards, 2440 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 20 TotalNumberOfCompositions, 990 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 990, positive: 990, positive conditional: 990, 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: 990, positive: 990, positive conditional: 0, positive unconditional: 990, 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: 990, positive: 990, positive conditional: 0, positive unconditional: 990, 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: 990, positive: 610, positive conditional: 0, positive unconditional: 610, negative: 380, negative conditional: 0, negative unconditional: 380, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 380, positive: 380, positive conditional: 0, positive unconditional: 380, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 503, positive: 503, positive conditional: 0, positive unconditional: 503, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 990, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 990, unknown conditional: 990, 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: 5.2ms, 85 PlacesBefore, 85 PlacesAfterwards, 42 TransitionsBefore, 42 TransitionsAfterwards, 800 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: 617.6ms, 109 PlacesBefore, 88 PlacesAfterwards, 66 TransitionsBefore, 45 TransitionsAfterwards, 2688 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 21 TotalNumberOfCompositions, 1092 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1092, positive: 1092, positive conditional: 1092, 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: 1092, positive: 1092, positive conditional: 0, positive unconditional: 1092, 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: 1092, positive: 1092, positive conditional: 0, positive unconditional: 1092, 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: 1092, positive: 672, positive conditional: 0, positive unconditional: 672, negative: 420, negative conditional: 0, negative unconditional: 420, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 420, positive: 420, positive conditional: 0, positive unconditional: 420, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 505, positive: 505, positive conditional: 0, positive unconditional: 505, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1092, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1092, unknown conditional: 1092, 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: 5.4ms, 89 PlacesBefore, 89 PlacesAfterwards, 44 TransitionsBefore, 44 TransitionsAfterwards, 882 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: 657.7ms, 114 PlacesBefore, 92 PlacesAfterwards, 69 TransitionsBefore, 47 TransitionsAfterwards, 2948 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 22 TotalNumberOfCompositions, 1199 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1199, positive: 1199, positive conditional: 1199, 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: 1199, positive: 1199, positive conditional: 0, positive unconditional: 1199, 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: 1199, positive: 1199, positive conditional: 0, positive unconditional: 1199, 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: 1199, positive: 737, positive conditional: 0, positive unconditional: 737, negative: 462, negative conditional: 0, negative unconditional: 462, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 462, positive: 462, positive conditional: 0, positive unconditional: 462, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 535, positive: 535, positive conditional: 0, positive unconditional: 535, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1199, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1199, unknown conditional: 1199, 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, 93 PlacesBefore, 93 PlacesAfterwards, 46 TransitionsBefore, 46 TransitionsAfterwards, 968 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: 751.5ms, 119 PlacesBefore, 96 PlacesAfterwards, 72 TransitionsBefore, 49 TransitionsAfterwards, 3220 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 23 TotalNumberOfCompositions, 1311 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1311, positive: 1311, positive conditional: 1311, 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: 1311, positive: 1311, positive conditional: 0, positive unconditional: 1311, 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: 1311, positive: 1311, positive conditional: 0, positive unconditional: 1311, 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: 1311, positive: 805, positive conditional: 0, positive unconditional: 805, negative: 506, negative conditional: 0, negative unconditional: 506, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 506, positive: 506, positive conditional: 0, positive unconditional: 506, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 625, positive: 625, positive conditional: 0, positive unconditional: 625, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1311, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1311, unknown conditional: 1311, 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: 5.2ms, 97 PlacesBefore, 97 PlacesAfterwards, 48 TransitionsBefore, 48 TransitionsAfterwards, 1058 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: 769.0ms, 124 PlacesBefore, 100 PlacesAfterwards, 75 TransitionsBefore, 51 TransitionsAfterwards, 3504 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 24 TotalNumberOfCompositions, 1428 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1428, positive: 1428, positive conditional: 1428, 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: 1428, positive: 1428, positive conditional: 0, positive unconditional: 1428, 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: 1428, positive: 1428, positive conditional: 0, positive unconditional: 1428, 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: 1428, positive: 876, positive conditional: 0, positive unconditional: 876, negative: 552, negative conditional: 0, negative unconditional: 552, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 552, positive: 552, positive conditional: 0, positive unconditional: 552, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 619, positive: 619, positive conditional: 0, positive unconditional: 619, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1428, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1428, unknown conditional: 1428, 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: 6.3ms, 101 PlacesBefore, 101 PlacesAfterwards, 50 TransitionsBefore, 50 TransitionsAfterwards, 1152 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: 874.3ms, 129 PlacesBefore, 104 PlacesAfterwards, 78 TransitionsBefore, 53 TransitionsAfterwards, 3800 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 25 TotalNumberOfCompositions, 1550 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1550, positive: 1550, positive conditional: 1550, 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: 1550, positive: 1550, positive conditional: 0, positive unconditional: 1550, 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: 1550, positive: 1550, positive conditional: 0, positive unconditional: 1550, 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: 1550, positive: 950, positive conditional: 0, positive unconditional: 950, negative: 600, negative conditional: 0, negative unconditional: 600, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 600, positive: 600, positive conditional: 0, positive unconditional: 600, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 734, positive: 734, positive conditional: 0, positive unconditional: 734, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1550, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1550, unknown conditional: 1550, 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: 5.3ms, 105 PlacesBefore, 105 PlacesAfterwards, 52 TransitionsBefore, 52 TransitionsAfterwards, 1250 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: 874.4ms, 134 PlacesBefore, 108 PlacesAfterwards, 81 TransitionsBefore, 55 TransitionsAfterwards, 4108 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 26 TotalNumberOfCompositions, 1677 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1677, positive: 1677, positive conditional: 1677, 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: 1677, positive: 1677, positive conditional: 0, positive unconditional: 1677, 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: 1677, positive: 1677, positive conditional: 0, positive unconditional: 1677, 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: 1677, positive: 1027, positive conditional: 0, positive unconditional: 1027, negative: 650, negative conditional: 0, negative unconditional: 650, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 650, positive: 650, positive conditional: 0, positive unconditional: 650, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 744, positive: 744, positive conditional: 0, positive unconditional: 744, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1677, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1677, unknown conditional: 1677, 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: 5.4ms, 109 PlacesBefore, 109 PlacesAfterwards, 54 TransitionsBefore, 54 TransitionsAfterwards, 1352 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: 940.9ms, 139 PlacesBefore, 112 PlacesAfterwards, 84 TransitionsBefore, 57 TransitionsAfterwards, 4428 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 27 TotalNumberOfCompositions, 1809 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1809, positive: 1809, positive conditional: 1809, 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: 1809, positive: 1809, positive conditional: 0, positive unconditional: 1809, 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: 1809, positive: 1809, positive conditional: 0, positive unconditional: 1809, 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: 1809, positive: 1107, positive conditional: 0, positive unconditional: 1107, negative: 702, negative conditional: 0, negative unconditional: 702, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 702, positive: 702, positive conditional: 0, positive unconditional: 702, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 800, positive: 800, positive conditional: 0, positive unconditional: 800, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1809, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1809, unknown conditional: 1809, 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, 113 PlacesBefore, 113 PlacesAfterwards, 56 TransitionsBefore, 56 TransitionsAfterwards, 1458 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: 1006.7ms, 144 PlacesBefore, 116 PlacesAfterwards, 87 TransitionsBefore, 59 TransitionsAfterwards, 4760 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 28 TotalNumberOfCompositions, 1946 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1946, positive: 1946, positive conditional: 1946, 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: 1946, positive: 1946, positive conditional: 0, positive unconditional: 1946, 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: 1946, positive: 1946, positive conditional: 0, positive unconditional: 1946, 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: 1946, positive: 1190, positive conditional: 0, positive unconditional: 1190, negative: 756, negative conditional: 0, negative unconditional: 756, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 756, positive: 756, positive conditional: 0, positive unconditional: 756, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 863, positive: 863, positive conditional: 0, positive unconditional: 863, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1946, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1946, unknown conditional: 1946, 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: 6.0ms, 117 PlacesBefore, 117 PlacesAfterwards, 58 TransitionsBefore, 58 TransitionsAfterwards, 1568 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: 1109.7ms, 149 PlacesBefore, 120 PlacesAfterwards, 90 TransitionsBefore, 61 TransitionsAfterwards, 5104 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 29 TotalNumberOfCompositions, 2088 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2088, positive: 2088, positive conditional: 2088, 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: 2088, positive: 2088, positive conditional: 0, positive unconditional: 2088, 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: 2088, positive: 2088, positive conditional: 0, positive unconditional: 2088, 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: 2088, positive: 1276, positive conditional: 0, positive unconditional: 1276, negative: 812, negative conditional: 0, negative unconditional: 812, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 812, positive: 812, positive conditional: 0, positive unconditional: 812, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 950, positive: 950, positive conditional: 0, positive unconditional: 950, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2088, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2088, unknown conditional: 2088, 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: 8.0ms, 121 PlacesBefore, 121 PlacesAfterwards, 60 TransitionsBefore, 60 TransitionsAfterwards, 1682 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: 1173.4ms, 154 PlacesBefore, 124 PlacesAfterwards, 93 TransitionsBefore, 63 TransitionsAfterwards, 5460 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 30 TotalNumberOfCompositions, 2235 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2235, positive: 2235, positive conditional: 2235, 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: 2235, positive: 2235, positive conditional: 0, positive unconditional: 2235, 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: 2235, positive: 2235, positive conditional: 0, positive unconditional: 2235, 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: 2235, positive: 1365, positive conditional: 0, positive unconditional: 1365, negative: 870, negative conditional: 0, negative unconditional: 870, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 870, positive: 870, positive conditional: 0, positive unconditional: 870, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1004, positive: 1004, positive conditional: 0, positive unconditional: 1004, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2235, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2235, unknown conditional: 2235, 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, 125 PlacesBefore, 125 PlacesAfterwards, 62 TransitionsBefore, 62 TransitionsAfterwards, 1800 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: 1265.1ms, 159 PlacesBefore, 128 PlacesAfterwards, 96 TransitionsBefore, 65 TransitionsAfterwards, 5828 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 31 TotalNumberOfCompositions, 2387 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2387, positive: 2387, positive conditional: 2387, 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: 2387, positive: 2387, positive conditional: 0, positive unconditional: 2387, 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: 2387, positive: 2387, positive conditional: 0, positive unconditional: 2387, 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: 2387, positive: 1457, positive conditional: 0, positive unconditional: 1457, negative: 930, negative conditional: 0, negative unconditional: 930, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 930, positive: 930, positive conditional: 0, positive unconditional: 930, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1038, positive: 1038, positive conditional: 0, positive unconditional: 1038, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2387, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2387, unknown conditional: 2387, 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: 7.0ms, 129 PlacesBefore, 129 PlacesAfterwards, 64 TransitionsBefore, 64 TransitionsAfterwards, 1922 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: 1343.6ms, 164 PlacesBefore, 132 PlacesAfterwards, 99 TransitionsBefore, 67 TransitionsAfterwards, 6208 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 32 TotalNumberOfCompositions, 2544 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2544, positive: 2544, positive conditional: 2544, 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: 2544, positive: 2544, positive conditional: 0, positive unconditional: 2544, 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: 2544, positive: 2544, positive conditional: 0, positive unconditional: 2544, 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: 2544, positive: 1552, positive conditional: 0, positive unconditional: 1552, negative: 992, negative conditional: 0, negative unconditional: 992, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 992, positive: 992, positive conditional: 0, positive unconditional: 992, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1159, positive: 1159, positive conditional: 0, positive unconditional: 1159, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2544, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2544, unknown conditional: 2544, 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: 7.2ms, 133 PlacesBefore, 133 PlacesAfterwards, 66 TransitionsBefore, 66 TransitionsAfterwards, 2048 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: 1428.9ms, 169 PlacesBefore, 136 PlacesAfterwards, 102 TransitionsBefore, 69 TransitionsAfterwards, 6600 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 33 TotalNumberOfCompositions, 2706 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2706, positive: 2706, positive conditional: 2706, 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: 2706, positive: 2706, positive conditional: 0, positive unconditional: 2706, 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: 2706, positive: 2706, positive conditional: 0, positive unconditional: 2706, 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: 2706, positive: 1650, positive conditional: 0, positive unconditional: 1650, negative: 1056, negative conditional: 0, negative unconditional: 1056, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1056, positive: 1056, positive conditional: 0, positive unconditional: 1056, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1221, positive: 1221, positive conditional: 0, positive unconditional: 1221, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2706, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2706, unknown conditional: 2706, 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: 8.9ms, 137 PlacesBefore, 137 PlacesAfterwards, 68 TransitionsBefore, 68 TransitionsAfterwards, 2178 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: 1471.1ms, 174 PlacesBefore, 140 PlacesAfterwards, 105 TransitionsBefore, 71 TransitionsAfterwards, 7004 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 34 TotalNumberOfCompositions, 2873 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2873, positive: 2873, positive conditional: 2873, 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: 2873, positive: 2873, positive conditional: 0, positive unconditional: 2873, 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: 2873, positive: 2873, positive conditional: 0, positive unconditional: 2873, 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: 2873, positive: 1751, positive conditional: 0, positive unconditional: 1751, negative: 1122, negative conditional: 0, negative unconditional: 1122, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1122, positive: 1122, positive conditional: 0, positive unconditional: 1122, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1257, positive: 1257, positive conditional: 0, positive unconditional: 1257, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2873, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2873, unknown conditional: 2873, 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: 8.0ms, 141 PlacesBefore, 141 PlacesAfterwards, 70 TransitionsBefore, 70 TransitionsAfterwards, 2312 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: 1521.3ms, 179 PlacesBefore, 144 PlacesAfterwards, 108 TransitionsBefore, 73 TransitionsAfterwards, 7420 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 35 TotalNumberOfCompositions, 3045 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3045, positive: 3045, positive conditional: 3045, 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: 3045, positive: 3045, positive conditional: 0, positive unconditional: 3045, 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: 3045, positive: 3045, positive conditional: 0, positive unconditional: 3045, 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: 3045, positive: 1855, positive conditional: 0, positive unconditional: 1855, negative: 1190, negative conditional: 0, negative unconditional: 1190, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1190, positive: 1190, positive conditional: 0, positive unconditional: 1190, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1316, positive: 1316, positive conditional: 0, positive unconditional: 1316, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3045, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3045, unknown conditional: 3045, 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, 145 PlacesBefore, 145 PlacesAfterwards, 72 TransitionsBefore, 72 TransitionsAfterwards, 2450 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: 1639.7ms, 184 PlacesBefore, 148 PlacesAfterwards, 111 TransitionsBefore, 75 TransitionsAfterwards, 7848 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 36 TotalNumberOfCompositions, 3222 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3222, positive: 3222, positive conditional: 3222, 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: 3222, positive: 3222, positive conditional: 0, positive unconditional: 3222, 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: 3222, positive: 3222, positive conditional: 0, positive unconditional: 3222, 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: 3222, positive: 1962, positive conditional: 0, positive unconditional: 1962, negative: 1260, negative conditional: 0, negative unconditional: 1260, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1260, positive: 1260, positive conditional: 0, positive unconditional: 1260, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1419, positive: 1419, positive conditional: 0, positive unconditional: 1419, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3222, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3222, unknown conditional: 3222, 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: 9.2ms, 149 PlacesBefore, 149 PlacesAfterwards, 74 TransitionsBefore, 74 TransitionsAfterwards, 2592 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: 1726.6ms, 189 PlacesBefore, 152 PlacesAfterwards, 114 TransitionsBefore, 77 TransitionsAfterwards, 8288 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 37 TotalNumberOfCompositions, 3404 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3404, positive: 3404, positive conditional: 3404, 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: 3404, positive: 3404, positive conditional: 0, positive unconditional: 3404, 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: 3404, positive: 3404, positive conditional: 0, positive unconditional: 3404, 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: 3404, positive: 2072, positive conditional: 0, positive unconditional: 2072, negative: 1332, negative conditional: 0, negative unconditional: 1332, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1332, positive: 1332, positive conditional: 0, positive unconditional: 1332, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1497, positive: 1497, positive conditional: 0, positive unconditional: 1497, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3404, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3404, unknown conditional: 3404, 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: 63.9ms, 153 PlacesBefore, 153 PlacesAfterwards, 76 TransitionsBefore, 76 TransitionsAfterwards, 2738 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: 1896.5ms, 194 PlacesBefore, 156 PlacesAfterwards, 117 TransitionsBefore, 79 TransitionsAfterwards, 8740 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 38 TotalNumberOfCompositions, 3591 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3591, positive: 3591, positive conditional: 3591, 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: 3591, positive: 3591, positive conditional: 0, positive unconditional: 3591, 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: 3591, positive: 3591, positive conditional: 0, positive unconditional: 3591, 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: 3591, positive: 2185, positive conditional: 0, positive unconditional: 2185, negative: 1406, negative conditional: 0, negative unconditional: 1406, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1406, positive: 1406, positive conditional: 0, positive unconditional: 1406, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1651, positive: 1651, positive conditional: 0, positive unconditional: 1651, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3591, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3591, unknown conditional: 3591, 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: 9.1ms, 157 PlacesBefore, 157 PlacesAfterwards, 78 TransitionsBefore, 78 TransitionsAfterwards, 2888 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: 1956.5ms, 199 PlacesBefore, 160 PlacesAfterwards, 120 TransitionsBefore, 81 TransitionsAfterwards, 9204 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 39 TotalNumberOfCompositions, 3783 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3783, positive: 3783, positive conditional: 3783, 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: 3783, positive: 3783, positive conditional: 0, positive unconditional: 3783, 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: 3783, positive: 3783, positive conditional: 0, positive unconditional: 3783, 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: 3783, positive: 2301, positive conditional: 0, positive unconditional: 2301, negative: 1482, negative conditional: 0, negative unconditional: 1482, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1482, positive: 1482, positive conditional: 0, positive unconditional: 1482, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1716, positive: 1716, positive conditional: 0, positive unconditional: 1716, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3783, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3783, unknown conditional: 3783, 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: 9.8ms, 161 PlacesBefore, 161 PlacesAfterwards, 80 TransitionsBefore, 80 TransitionsAfterwards, 3042 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: 2127.9ms, 204 PlacesBefore, 164 PlacesAfterwards, 123 TransitionsBefore, 83 TransitionsAfterwards, 9680 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 40 TotalNumberOfCompositions, 3980 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3980, positive: 3980, positive conditional: 3980, 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: 3980, positive: 3980, positive conditional: 0, positive unconditional: 3980, 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: 3980, positive: 3980, positive conditional: 0, positive unconditional: 3980, 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: 3980, positive: 2420, positive conditional: 0, positive unconditional: 2420, negative: 1560, negative conditional: 0, negative unconditional: 1560, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1560, positive: 1560, positive conditional: 0, positive unconditional: 1560, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1870, positive: 1870, positive conditional: 0, positive unconditional: 1870, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3980, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3980, unknown conditional: 3980, 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, 165 PlacesBefore, 165 PlacesAfterwards, 82 TransitionsBefore, 82 TransitionsAfterwards, 3200 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: 2206.2ms, 209 PlacesBefore, 168 PlacesAfterwards, 126 TransitionsBefore, 85 TransitionsAfterwards, 10168 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 41 TotalNumberOfCompositions, 4182 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4182, positive: 4182, positive conditional: 4182, 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: 4182, positive: 4182, positive conditional: 0, positive unconditional: 4182, 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: 4182, positive: 4182, positive conditional: 0, positive unconditional: 4182, 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: 4182, positive: 2542, positive conditional: 0, positive unconditional: 2542, negative: 1640, negative conditional: 0, negative unconditional: 1640, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1640, positive: 1640, positive conditional: 0, positive unconditional: 1640, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1939, positive: 1939, positive conditional: 0, positive unconditional: 1939, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4182, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 4182, unknown conditional: 4182, 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: 10.5ms, 169 PlacesBefore, 169 PlacesAfterwards, 84 TransitionsBefore, 84 TransitionsAfterwards, 3362 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: 2432.5ms, 214 PlacesBefore, 172 PlacesAfterwards, 129 TransitionsBefore, 87 TransitionsAfterwards, 10668 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 42 TotalNumberOfCompositions, 4389 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4389, positive: 4389, positive conditional: 4389, 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: 4389, positive: 4389, positive conditional: 0, positive unconditional: 4389, 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: 4389, positive: 4389, positive conditional: 0, positive unconditional: 4389, 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: 4389, positive: 2667, positive conditional: 0, positive unconditional: 2667, negative: 1722, negative conditional: 0, negative unconditional: 1722, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1722, positive: 1722, positive conditional: 0, positive unconditional: 1722, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2143, positive: 2143, positive conditional: 0, positive unconditional: 2143, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4389, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 4389, unknown conditional: 4389, 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: 11.2ms, 173 PlacesBefore, 173 PlacesAfterwards, 86 TransitionsBefore, 86 TransitionsAfterwards, 3528 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: 2414.4ms, 219 PlacesBefore, 176 PlacesAfterwards, 132 TransitionsBefore, 89 TransitionsAfterwards, 11180 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 43 TotalNumberOfCompositions, 4601 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4601, positive: 4601, positive conditional: 4601, 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: 4601, positive: 4601, positive conditional: 0, positive unconditional: 4601, 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: 4601, positive: 4601, positive conditional: 0, positive unconditional: 4601, 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: 4601, positive: 2795, positive conditional: 0, positive unconditional: 2795, negative: 1806, negative conditional: 0, negative unconditional: 1806, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1806, positive: 1806, positive conditional: 0, positive unconditional: 1806, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2130, positive: 2130, positive conditional: 0, positive unconditional: 2130, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4601, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 4601, unknown conditional: 4601, 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: 11.4ms, 177 PlacesBefore, 177 PlacesAfterwards, 88 TransitionsBefore, 88 TransitionsAfterwards, 3698 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: 2507.3ms, 224 PlacesBefore, 180 PlacesAfterwards, 135 TransitionsBefore, 91 TransitionsAfterwards, 11704 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 44 TotalNumberOfCompositions, 4818 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4818, positive: 4818, positive conditional: 4818, 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: 4818, positive: 4818, positive conditional: 0, positive unconditional: 4818, 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: 4818, positive: 4818, positive conditional: 0, positive unconditional: 4818, 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: 4818, positive: 2926, positive conditional: 0, positive unconditional: 2926, negative: 1892, negative conditional: 0, negative unconditional: 1892, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1892, positive: 1892, positive conditional: 0, positive unconditional: 1892, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2156, positive: 2156, positive conditional: 0, positive unconditional: 2156, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4818, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 4818, unknown conditional: 4818, 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: 11.5ms, 181 PlacesBefore, 181 PlacesAfterwards, 90 TransitionsBefore, 90 TransitionsAfterwards, 3872 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: 2649.2ms, 229 PlacesBefore, 184 PlacesAfterwards, 138 TransitionsBefore, 93 TransitionsAfterwards, 12240 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 45 TotalNumberOfCompositions, 5040 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5040, positive: 5040, positive conditional: 5040, 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: 5040, positive: 5040, positive conditional: 0, positive unconditional: 5040, 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: 5040, positive: 5040, positive conditional: 0, positive unconditional: 5040, 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: 5040, positive: 3060, positive conditional: 0, positive unconditional: 3060, negative: 1980, negative conditional: 0, negative unconditional: 1980, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1980, positive: 1980, positive conditional: 0, positive unconditional: 1980, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2272, positive: 2272, positive conditional: 0, positive unconditional: 2272, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5040, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 5040, unknown conditional: 5040, 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: 12.6ms, 185 PlacesBefore, 185 PlacesAfterwards, 92 TransitionsBefore, 92 TransitionsAfterwards, 4050 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: 2921.9ms, 234 PlacesBefore, 188 PlacesAfterwards, 141 TransitionsBefore, 95 TransitionsAfterwards, 12788 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 46 TotalNumberOfCompositions, 5267 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5267, positive: 5267, positive conditional: 5267, 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: 5267, positive: 5267, positive conditional: 0, positive unconditional: 5267, 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: 5267, positive: 5267, positive conditional: 0, positive unconditional: 5267, 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: 5267, positive: 3197, positive conditional: 0, positive unconditional: 3197, negative: 2070, negative conditional: 0, negative unconditional: 2070, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2070, positive: 2070, positive conditional: 0, positive unconditional: 2070, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2588, positive: 2588, positive conditional: 0, positive unconditional: 2588, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5267, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 5267, unknown conditional: 5267, 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: 12.2ms, 189 PlacesBefore, 189 PlacesAfterwards, 94 TransitionsBefore, 94 TransitionsAfterwards, 4232 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: 2897.7ms, 239 PlacesBefore, 192 PlacesAfterwards, 144 TransitionsBefore, 97 TransitionsAfterwards, 13348 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 47 TotalNumberOfCompositions, 5499 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5499, positive: 5499, positive conditional: 5499, 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: 5499, positive: 5499, positive conditional: 0, positive unconditional: 5499, 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: 5499, positive: 5499, positive conditional: 0, positive unconditional: 5499, 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: 5499, positive: 3337, positive conditional: 0, positive unconditional: 3337, negative: 2162, negative conditional: 0, negative unconditional: 2162, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2162, positive: 2162, positive conditional: 0, positive unconditional: 2162, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2571, positive: 2571, positive conditional: 0, positive unconditional: 2571, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5499, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 5499, unknown conditional: 5499, 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: 12.9ms, 193 PlacesBefore, 193 PlacesAfterwards, 96 TransitionsBefore, 96 TransitionsAfterwards, 4418 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: 3042.5ms, 244 PlacesBefore, 196 PlacesAfterwards, 147 TransitionsBefore, 99 TransitionsAfterwards, 13920 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 48 TotalNumberOfCompositions, 5736 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5736, positive: 5736, positive conditional: 5736, 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: 5736, positive: 5736, positive conditional: 0, positive unconditional: 5736, 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: 5736, positive: 5736, positive conditional: 0, positive unconditional: 5736, 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: 5736, positive: 3480, positive conditional: 0, positive unconditional: 3480, negative: 2256, negative conditional: 0, negative unconditional: 2256, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2256, positive: 2256, positive conditional: 0, positive unconditional: 2256, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2699, positive: 2699, positive conditional: 0, positive unconditional: 2699, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5736, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 5736, unknown conditional: 5736, 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: 13.3ms, 197 PlacesBefore, 197 PlacesAfterwards, 98 TransitionsBefore, 98 TransitionsAfterwards, 4608 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: 3221.8ms, 249 PlacesBefore, 200 PlacesAfterwards, 150 TransitionsBefore, 101 TransitionsAfterwards, 14504 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 49 TotalNumberOfCompositions, 5978 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5978, positive: 5978, positive conditional: 5978, 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: 5978, positive: 5978, positive conditional: 0, positive unconditional: 5978, 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: 5978, positive: 5978, positive conditional: 0, positive unconditional: 5978, 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: 5978, positive: 3626, positive conditional: 0, positive unconditional: 3626, negative: 2352, negative conditional: 0, negative unconditional: 2352, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2352, positive: 2352, positive conditional: 0, positive unconditional: 2352, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2861, positive: 2861, positive conditional: 0, positive unconditional: 2861, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5978, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 5978, unknown conditional: 5978, 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: 13.5ms, 201 PlacesBefore, 201 PlacesAfterwards, 100 TransitionsBefore, 100 TransitionsAfterwards, 4802 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: 3455.8ms, 254 PlacesBefore, 204 PlacesAfterwards, 153 TransitionsBefore, 103 TransitionsAfterwards, 15100 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 50 TotalNumberOfCompositions, 6225 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6225, positive: 6225, positive conditional: 6225, 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: 6225, positive: 6225, positive conditional: 0, positive unconditional: 6225, 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: 6225, positive: 6225, positive conditional: 0, positive unconditional: 6225, 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: 6225, positive: 3775, positive conditional: 0, positive unconditional: 3775, negative: 2450, negative conditional: 0, negative unconditional: 2450, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2450, positive: 2450, positive conditional: 0, positive unconditional: 2450, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3073, positive: 3073, positive conditional: 0, positive unconditional: 3073, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6225, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 6225, unknown conditional: 6225, 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: 14.3ms, 205 PlacesBefore, 205 PlacesAfterwards, 102 TransitionsBefore, 102 TransitionsAfterwards, 5000 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: 3709.6ms, 259 PlacesBefore, 208 PlacesAfterwards, 156 TransitionsBefore, 105 TransitionsAfterwards, 15708 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 51 TotalNumberOfCompositions, 6477 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6477, positive: 6477, positive conditional: 6477, 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: 6477, positive: 6477, positive conditional: 0, positive unconditional: 6477, 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: 6477, positive: 6477, positive conditional: 0, positive unconditional: 6477, 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: 6477, positive: 3927, positive conditional: 0, positive unconditional: 3927, negative: 2550, negative conditional: 0, negative unconditional: 2550, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2550, positive: 2550, positive conditional: 0, positive unconditional: 2550, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3290, positive: 3290, positive conditional: 0, positive unconditional: 3290, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6477, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 6477, unknown conditional: 6477, 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: 15.2ms, 209 PlacesBefore, 209 PlacesAfterwards, 104 TransitionsBefore, 104 TransitionsAfterwards, 5202 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: 3722.7ms, 264 PlacesBefore, 212 PlacesAfterwards, 159 TransitionsBefore, 107 TransitionsAfterwards, 16328 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 52 TotalNumberOfCompositions, 6734 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6734, positive: 6734, positive conditional: 6734, 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: 6734, positive: 6734, positive conditional: 0, positive unconditional: 6734, 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: 6734, positive: 6734, positive conditional: 0, positive unconditional: 6734, 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: 6734, positive: 4082, positive conditional: 0, positive unconditional: 4082, negative: 2652, negative conditional: 0, negative unconditional: 2652, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2652, positive: 2652, positive conditional: 0, positive unconditional: 2652, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3313, positive: 3313, positive conditional: 0, positive unconditional: 3313, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6734, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 6734, unknown conditional: 6734, 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: 15.5ms, 213 PlacesBefore, 213 PlacesAfterwards, 106 TransitionsBefore, 106 TransitionsAfterwards, 5408 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: 3895.9ms, 269 PlacesBefore, 216 PlacesAfterwards, 162 TransitionsBefore, 109 TransitionsAfterwards, 16960 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 53 TotalNumberOfCompositions, 6996 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6996, positive: 6996, positive conditional: 6996, 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: 6996, positive: 6996, positive conditional: 0, positive unconditional: 6996, 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: 6996, positive: 6996, positive conditional: 0, positive unconditional: 6996, 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: 6996, positive: 4240, positive conditional: 0, positive unconditional: 4240, negative: 2756, negative conditional: 0, negative unconditional: 2756, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2756, positive: 2756, positive conditional: 0, positive unconditional: 2756, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3471, positive: 3471, positive conditional: 0, positive unconditional: 3471, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6996, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 6996, unknown conditional: 6996, 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: 16.1ms, 217 PlacesBefore, 217 PlacesAfterwards, 108 TransitionsBefore, 108 TransitionsAfterwards, 5618 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: 4099.5ms, 274 PlacesBefore, 220 PlacesAfterwards, 165 TransitionsBefore, 111 TransitionsAfterwards, 17604 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 54 TotalNumberOfCompositions, 7263 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7263, positive: 7263, positive conditional: 7263, 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: 7263, positive: 7263, positive conditional: 0, positive unconditional: 7263, 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: 7263, positive: 7263, positive conditional: 0, positive unconditional: 7263, 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: 7263, positive: 4401, positive conditional: 0, positive unconditional: 4401, negative: 2862, negative conditional: 0, negative unconditional: 2862, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2862, positive: 2862, positive conditional: 0, positive unconditional: 2862, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3638, positive: 3638, positive conditional: 0, positive unconditional: 3638, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7263, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 7263, unknown conditional: 7263, 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: 19.3ms, 221 PlacesBefore, 221 PlacesAfterwards, 110 TransitionsBefore, 110 TransitionsAfterwards, 5832 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: 4110.9ms, 279 PlacesBefore, 224 PlacesAfterwards, 168 TransitionsBefore, 113 TransitionsAfterwards, 18260 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 55 TotalNumberOfCompositions, 7535 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7535, positive: 7535, positive conditional: 7535, 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: 7535, positive: 7535, positive conditional: 0, positive unconditional: 7535, 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: 7535, positive: 7535, positive conditional: 0, positive unconditional: 7535, 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: 7535, positive: 4565, positive conditional: 0, positive unconditional: 4565, negative: 2970, negative conditional: 0, negative unconditional: 2970, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2970, positive: 2970, positive conditional: 0, positive unconditional: 2970, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3628, positive: 3628, positive conditional: 0, positive unconditional: 3628, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7535, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 7535, unknown conditional: 7535, 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: 17.8ms, 225 PlacesBefore, 225 PlacesAfterwards, 112 TransitionsBefore, 112 TransitionsAfterwards, 6050 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: 4326.5ms, 284 PlacesBefore, 228 PlacesAfterwards, 171 TransitionsBefore, 115 TransitionsAfterwards, 18928 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 56 TotalNumberOfCompositions, 7812 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7812, positive: 7812, positive conditional: 7812, 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: 7812, positive: 7812, positive conditional: 0, positive unconditional: 7812, 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: 7812, positive: 7812, positive conditional: 0, positive unconditional: 7812, 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: 7812, positive: 4732, positive conditional: 0, positive unconditional: 4732, negative: 3080, negative conditional: 0, negative unconditional: 3080, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3080, positive: 3080, positive conditional: 0, positive unconditional: 3080, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3821, positive: 3821, positive conditional: 0, positive unconditional: 3821, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7812, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 7812, unknown conditional: 7812, 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: 18.1ms, 229 PlacesBefore, 229 PlacesAfterwards, 114 TransitionsBefore, 114 TransitionsAfterwards, 6272 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: 4560.8ms, 289 PlacesBefore, 232 PlacesAfterwards, 174 TransitionsBefore, 117 TransitionsAfterwards, 19608 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 57 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 57 TotalNumberOfCompositions, 8094 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8094, positive: 8094, positive conditional: 8094, 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: 8094, positive: 8094, positive conditional: 0, positive unconditional: 8094, 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: 8094, positive: 8094, positive conditional: 0, positive unconditional: 8094, 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: 8094, positive: 4902, positive conditional: 0, positive unconditional: 4902, negative: 3192, negative conditional: 0, negative unconditional: 3192, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3192, positive: 3192, positive conditional: 0, positive unconditional: 3192, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4049, positive: 4049, positive conditional: 0, positive unconditional: 4049, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8094, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 8094, unknown conditional: 8094, 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: 18.2ms, 233 PlacesBefore, 233 PlacesAfterwards, 116 TransitionsBefore, 116 TransitionsAfterwards, 6498 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: 4800.0ms, 294 PlacesBefore, 236 PlacesAfterwards, 177 TransitionsBefore, 119 TransitionsAfterwards, 20300 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 58 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 58 TotalNumberOfCompositions, 8381 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8381, positive: 8381, positive conditional: 8381, 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: 8381, positive: 8381, positive conditional: 0, positive unconditional: 8381, 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: 8381, positive: 8381, positive conditional: 0, positive unconditional: 8381, 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: 8381, positive: 5075, positive conditional: 0, positive unconditional: 5075, negative: 3306, negative conditional: 0, negative unconditional: 3306, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3306, positive: 3306, positive conditional: 0, positive unconditional: 3306, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4276, positive: 4276, positive conditional: 0, positive unconditional: 4276, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8381, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 8381, unknown conditional: 8381, 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: 19.1ms, 237 PlacesBefore, 237 PlacesAfterwards, 118 TransitionsBefore, 118 TransitionsAfterwards, 6728 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: 4896.4ms, 299 PlacesBefore, 240 PlacesAfterwards, 180 TransitionsBefore, 121 TransitionsAfterwards, 21004 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 59 TotalNumberOfCompositions, 8673 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8673, positive: 8673, positive conditional: 8673, 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: 8673, positive: 8673, positive conditional: 0, positive unconditional: 8673, 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: 8673, positive: 8673, positive conditional: 0, positive unconditional: 8673, 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: 8673, positive: 5251, positive conditional: 0, positive unconditional: 5251, negative: 3422, negative conditional: 0, negative unconditional: 3422, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3422, positive: 3422, positive conditional: 0, positive unconditional: 3422, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4360, positive: 4360, positive conditional: 0, positive unconditional: 4360, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8673, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 8673, unknown conditional: 8673, 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: 18.9ms, 241 PlacesBefore, 241 PlacesAfterwards, 120 TransitionsBefore, 120 TransitionsAfterwards, 6962 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: 5172.1ms, 304 PlacesBefore, 244 PlacesAfterwards, 183 TransitionsBefore, 123 TransitionsAfterwards, 21720 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 60 TotalNumberOfCompositions, 8970 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8970, positive: 8970, positive conditional: 8970, 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: 8970, positive: 8970, positive conditional: 0, positive unconditional: 8970, 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: 8970, positive: 8970, positive conditional: 0, positive unconditional: 8970, 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: 8970, positive: 5430, positive conditional: 0, positive unconditional: 5430, negative: 3540, negative conditional: 0, negative unconditional: 3540, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3540, positive: 3540, positive conditional: 0, positive unconditional: 3540, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4600, positive: 4600, positive conditional: 0, positive unconditional: 4600, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8970, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 8970, unknown conditional: 8970, 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: 19.8ms, 245 PlacesBefore, 245 PlacesAfterwards, 122 TransitionsBefore, 122 TransitionsAfterwards, 7200 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: 5355.6ms, 309 PlacesBefore, 248 PlacesAfterwards, 186 TransitionsBefore, 125 TransitionsAfterwards, 22448 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 61 TotalNumberOfCompositions, 9272 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9272, positive: 9272, positive conditional: 9272, 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: 9272, positive: 9272, positive conditional: 0, positive unconditional: 9272, 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: 9272, positive: 9272, positive conditional: 0, positive unconditional: 9272, 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: 9272, positive: 5612, positive conditional: 0, positive unconditional: 5612, negative: 3660, negative conditional: 0, negative unconditional: 3660, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3660, positive: 3660, positive conditional: 0, positive unconditional: 3660, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4613, positive: 4613, positive conditional: 0, positive unconditional: 4613, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 9272, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 9272, unknown conditional: 9272, 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: 20.1ms, 249 PlacesBefore, 249 PlacesAfterwards, 124 TransitionsBefore, 124 TransitionsAfterwards, 7442 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: 5677.2ms, 314 PlacesBefore, 252 PlacesAfterwards, 189 TransitionsBefore, 127 TransitionsAfterwards, 23188 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 62 TotalNumberOfCompositions, 9579 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9579, positive: 9579, positive conditional: 9579, 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: 9579, positive: 9579, positive conditional: 0, positive unconditional: 9579, 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: 9579, positive: 9579, positive conditional: 0, positive unconditional: 9579, 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: 9579, positive: 5797, positive conditional: 0, positive unconditional: 5797, negative: 3782, negative conditional: 0, negative unconditional: 3782, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3782, positive: 3782, positive conditional: 0, positive unconditional: 3782, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4917, positive: 4917, positive conditional: 0, positive unconditional: 4917, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 9579, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 9579, unknown conditional: 9579, 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: 153.6ms, 253 PlacesBefore, 253 PlacesAfterwards, 126 TransitionsBefore, 126 TransitionsAfterwards, 7688 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: 5862.2ms, 319 PlacesBefore, 256 PlacesAfterwards, 192 TransitionsBefore, 129 TransitionsAfterwards, 23940 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 63 TotalNumberOfCompositions, 9891 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9891, positive: 9891, positive conditional: 9891, 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: 9891, positive: 9891, positive conditional: 0, positive unconditional: 9891, 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: 9891, positive: 9891, positive conditional: 0, positive unconditional: 9891, 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: 9891, positive: 5985, positive conditional: 0, positive unconditional: 5985, negative: 3906, negative conditional: 0, negative unconditional: 3906, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3906, positive: 3906, positive conditional: 0, positive unconditional: 3906, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5247, positive: 5247, positive conditional: 0, positive unconditional: 5247, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 9891, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 9891, unknown conditional: 9891, 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: 21.8ms, 257 PlacesBefore, 257 PlacesAfterwards, 128 TransitionsBefore, 128 TransitionsAfterwards, 7938 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: 6087.7ms, 324 PlacesBefore, 260 PlacesAfterwards, 195 TransitionsBefore, 131 TransitionsAfterwards, 24704 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 64 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 64 TotalNumberOfCompositions, 10208 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10208, positive: 10208, positive conditional: 10208, 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: 10208, positive: 10208, positive conditional: 0, positive unconditional: 10208, 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: 10208, positive: 10208, positive conditional: 0, positive unconditional: 10208, 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: 10208, positive: 6176, positive conditional: 0, positive unconditional: 6176, negative: 4032, negative conditional: 0, negative unconditional: 4032, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4032, positive: 4032, positive conditional: 0, positive unconditional: 4032, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5452, positive: 5452, positive conditional: 0, positive unconditional: 5452, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 10208, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 10208, unknown conditional: 10208, 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: 22.4ms, 261 PlacesBefore, 261 PlacesAfterwards, 130 TransitionsBefore, 130 TransitionsAfterwards, 8192 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: 6382.2ms, 329 PlacesBefore, 264 PlacesAfterwards, 198 TransitionsBefore, 133 TransitionsAfterwards, 25480 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 65 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 65 TotalNumberOfCompositions, 10530 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10530, positive: 10530, positive conditional: 10530, 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: 10530, positive: 10530, positive conditional: 0, positive unconditional: 10530, 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: 10530, positive: 10530, positive conditional: 0, positive unconditional: 10530, 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: 10530, positive: 6370, positive conditional: 0, positive unconditional: 6370, negative: 4160, negative conditional: 0, negative unconditional: 4160, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4160, positive: 4160, positive conditional: 0, positive unconditional: 4160, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5719, positive: 5719, positive conditional: 0, positive unconditional: 5719, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 10530, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 10530, unknown conditional: 10530, 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: 23.0ms, 265 PlacesBefore, 265 PlacesAfterwards, 132 TransitionsBefore, 132 TransitionsAfterwards, 8450 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: 6585.7ms, 334 PlacesBefore, 268 PlacesAfterwards, 201 TransitionsBefore, 135 TransitionsAfterwards, 26268 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 66 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 66 TotalNumberOfCompositions, 10857 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10857, positive: 10857, positive conditional: 10857, 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: 10857, positive: 10857, positive conditional: 0, positive unconditional: 10857, 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: 10857, positive: 10857, positive conditional: 0, positive unconditional: 10857, 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: 10857, positive: 6567, positive conditional: 0, positive unconditional: 6567, negative: 4290, negative conditional: 0, negative unconditional: 4290, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4290, positive: 4290, positive conditional: 0, positive unconditional: 4290, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5892, positive: 5892, positive conditional: 0, positive unconditional: 5892, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 10857, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 10857, unknown conditional: 10857, 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: 24.7ms, 269 PlacesBefore, 269 PlacesAfterwards, 134 TransitionsBefore, 134 TransitionsAfterwards, 8712 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: 6966.3ms, 339 PlacesBefore, 272 PlacesAfterwards, 204 TransitionsBefore, 137 TransitionsAfterwards, 27068 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 67 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 67 TotalNumberOfCompositions, 11189 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11189, positive: 11189, positive conditional: 11189, 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: 11189, positive: 11189, positive conditional: 0, positive unconditional: 11189, 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: 11189, positive: 11189, positive conditional: 0, positive unconditional: 11189, 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: 11189, positive: 6767, positive conditional: 0, positive unconditional: 6767, negative: 4422, negative conditional: 0, negative unconditional: 4422, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4422, positive: 4422, positive conditional: 0, positive unconditional: 4422, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 6113, positive: 6113, positive conditional: 0, positive unconditional: 6113, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11189, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 11189, unknown conditional: 11189, 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: 24.1ms, 273 PlacesBefore, 273 PlacesAfterwards, 136 TransitionsBefore, 136 TransitionsAfterwards, 8978 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: 7118.4ms, 344 PlacesBefore, 276 PlacesAfterwards, 207 TransitionsBefore, 139 TransitionsAfterwards, 27880 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 68 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 68 TotalNumberOfCompositions, 11526 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11526, positive: 11526, positive conditional: 11526, 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: 11526, positive: 11526, positive conditional: 0, positive unconditional: 11526, 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: 11526, positive: 11526, positive conditional: 0, positive unconditional: 11526, 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: 11526, positive: 6970, positive conditional: 0, positive unconditional: 6970, negative: 4556, negative conditional: 0, negative unconditional: 4556, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4556, positive: 4556, positive conditional: 0, positive unconditional: 4556, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 6382, positive: 6382, positive conditional: 0, positive unconditional: 6382, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11526, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 11526, unknown conditional: 11526, 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: 25.4ms, 277 PlacesBefore, 277 PlacesAfterwards, 138 TransitionsBefore, 138 TransitionsAfterwards, 9248 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: 7637.3ms, 349 PlacesBefore, 280 PlacesAfterwards, 210 TransitionsBefore, 141 TransitionsAfterwards, 28704 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 69 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 69 TotalNumberOfCompositions, 11868 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11868, positive: 11868, positive conditional: 11868, 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: 11868, positive: 11868, positive conditional: 0, positive unconditional: 11868, 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: 11868, positive: 11868, positive conditional: 0, positive unconditional: 11868, 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: 11868, positive: 7176, positive conditional: 0, positive unconditional: 7176, negative: 4692, negative conditional: 0, negative unconditional: 4692, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4692, positive: 4692, positive conditional: 0, positive unconditional: 4692, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 6843, positive: 6843, positive conditional: 0, positive unconditional: 6843, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11868, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 11868, unknown conditional: 11868, 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: 26.1ms, 281 PlacesBefore, 281 PlacesAfterwards, 140 TransitionsBefore, 140 TransitionsAfterwards, 9522 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: 8182.2ms, 354 PlacesBefore, 284 PlacesAfterwards, 213 TransitionsBefore, 143 TransitionsAfterwards, 29540 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 70 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 70 TotalNumberOfCompositions, 12215 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12215, positive: 12215, positive conditional: 12215, 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: 12215, positive: 12215, positive conditional: 0, positive unconditional: 12215, 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: 12215, positive: 12215, positive conditional: 0, positive unconditional: 12215, 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: 12215, positive: 7385, positive conditional: 0, positive unconditional: 7385, negative: 4830, negative conditional: 0, negative unconditional: 4830, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4830, positive: 4830, positive conditional: 0, positive unconditional: 4830, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 7368, positive: 7368, positive conditional: 0, positive unconditional: 7368, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 12215, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 12215, unknown conditional: 12215, 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: 27.0ms, 285 PlacesBefore, 285 PlacesAfterwards, 142 TransitionsBefore, 142 TransitionsAfterwards, 9800 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: 8267.1ms, 359 PlacesBefore, 288 PlacesAfterwards, 216 TransitionsBefore, 145 TransitionsAfterwards, 30388 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 71 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 71 TotalNumberOfCompositions, 12567 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12567, positive: 12567, positive conditional: 12567, 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: 12567, positive: 12567, positive conditional: 0, positive unconditional: 12567, 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: 12567, positive: 12567, positive conditional: 0, positive unconditional: 12567, 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: 12567, positive: 7597, positive conditional: 0, positive unconditional: 7597, negative: 4970, negative conditional: 0, negative unconditional: 4970, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4970, positive: 4970, positive conditional: 0, positive unconditional: 4970, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 7416, positive: 7416, positive conditional: 0, positive unconditional: 7416, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 12567, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 12567, unknown conditional: 12567, 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: 28.7ms, 289 PlacesBefore, 289 PlacesAfterwards, 144 TransitionsBefore, 144 TransitionsAfterwards, 10082 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: 8781.7ms, 364 PlacesBefore, 292 PlacesAfterwards, 219 TransitionsBefore, 147 TransitionsAfterwards, 31248 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 72 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 72 TotalNumberOfCompositions, 12924 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12924, positive: 12924, positive conditional: 12924, 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: 12924, positive: 12924, positive conditional: 0, positive unconditional: 12924, 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: 12924, positive: 12924, positive conditional: 0, positive unconditional: 12924, 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: 12924, positive: 7812, positive conditional: 0, positive unconditional: 7812, negative: 5112, negative conditional: 0, negative unconditional: 5112, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5112, positive: 5112, positive conditional: 0, positive unconditional: 5112, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 7647, positive: 7647, positive conditional: 0, positive unconditional: 7647, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 12924, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 12924, unknown conditional: 12924, 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: 27.2ms, 293 PlacesBefore, 293 PlacesAfterwards, 146 TransitionsBefore, 146 TransitionsAfterwards, 10368 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: 9184.1ms, 369 PlacesBefore, 296 PlacesAfterwards, 222 TransitionsBefore, 149 TransitionsAfterwards, 32120 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 73 TotalNumberOfCompositions, 13286 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13286, positive: 13286, positive conditional: 13286, 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: 13286, positive: 13286, positive conditional: 0, positive unconditional: 13286, 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: 13286, positive: 13286, positive conditional: 0, positive unconditional: 13286, 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: 13286, positive: 8030, positive conditional: 0, positive unconditional: 8030, negative: 5256, negative conditional: 0, negative unconditional: 5256, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5256, positive: 5256, positive conditional: 0, positive unconditional: 5256, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 8142, positive: 8142, positive conditional: 0, positive unconditional: 8142, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 13286, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 13286, unknown conditional: 13286, 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: 30.1ms, 297 PlacesBefore, 297 PlacesAfterwards, 148 TransitionsBefore, 148 TransitionsAfterwards, 10658 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: 10478.0ms, 374 PlacesBefore, 300 PlacesAfterwards, 225 TransitionsBefore, 151 TransitionsAfterwards, 33004 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 74 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 74 TotalNumberOfCompositions, 13653 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13653, positive: 13653, positive conditional: 13653, 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: 13653, positive: 13653, positive conditional: 0, positive unconditional: 13653, 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: 13653, positive: 13653, positive conditional: 0, positive unconditional: 13653, 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: 13653, positive: 8251, positive conditional: 0, positive unconditional: 8251, negative: 5402, negative conditional: 0, negative unconditional: 5402, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5402, positive: 5402, positive conditional: 0, positive unconditional: 5402, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 9464, positive: 9464, positive conditional: 0, positive unconditional: 9464, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 13653, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 13653, unknown conditional: 13653, 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: 32.1ms, 301 PlacesBefore, 301 PlacesAfterwards, 150 TransitionsBefore, 150 TransitionsAfterwards, 10952 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: 11292.5ms, 379 PlacesBefore, 304 PlacesAfterwards, 228 TransitionsBefore, 153 TransitionsAfterwards, 33900 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 75 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 75 TotalNumberOfCompositions, 14025 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14025, positive: 14025, positive conditional: 14025, 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: 14025, positive: 14025, positive conditional: 0, positive unconditional: 14025, 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: 14025, positive: 14025, positive conditional: 0, positive unconditional: 14025, 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: 14025, positive: 8475, positive conditional: 0, positive unconditional: 8475, negative: 5550, negative conditional: 0, negative unconditional: 5550, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5550, positive: 5550, positive conditional: 0, positive unconditional: 5550, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 10173, positive: 10173, positive conditional: 0, positive unconditional: 10173, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 14025, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 14025, unknown conditional: 14025, 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: 31.1ms, 305 PlacesBefore, 305 PlacesAfterwards, 152 TransitionsBefore, 152 TransitionsAfterwards, 11250 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: 11329.8ms, 384 PlacesBefore, 308 PlacesAfterwards, 231 TransitionsBefore, 155 TransitionsAfterwards, 34808 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 76 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 76 TotalNumberOfCompositions, 14402 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14402, positive: 14402, positive conditional: 14402, 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: 14402, positive: 14402, positive conditional: 0, positive unconditional: 14402, 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: 14402, positive: 14402, positive conditional: 0, positive unconditional: 14402, 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: 14402, positive: 8702, positive conditional: 0, positive unconditional: 8702, negative: 5700, negative conditional: 0, negative unconditional: 5700, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5700, positive: 5700, positive conditional: 0, positive unconditional: 5700, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 10110, positive: 10110, positive conditional: 0, positive unconditional: 10110, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 14402, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 14402, unknown conditional: 14402, 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: 29.9ms, 309 PlacesBefore, 309 PlacesAfterwards, 154 TransitionsBefore, 154 TransitionsAfterwards, 11552 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: 12073.1ms, 389 PlacesBefore, 312 PlacesAfterwards, 234 TransitionsBefore, 157 TransitionsAfterwards, 35728 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 77 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 77 TotalNumberOfCompositions, 14784 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14784, positive: 14784, positive conditional: 14784, 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: 14784, positive: 14784, positive conditional: 0, positive unconditional: 14784, 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: 14784, positive: 14784, positive conditional: 0, positive unconditional: 14784, 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: 14784, positive: 8932, positive conditional: 0, positive unconditional: 8932, negative: 5852, negative conditional: 0, negative unconditional: 5852, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5852, positive: 5852, positive conditional: 0, positive unconditional: 5852, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 10914, positive: 10914, positive conditional: 0, positive unconditional: 10914, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 14784, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 14784, unknown conditional: 14784, 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: 32.5ms, 313 PlacesBefore, 313 PlacesAfterwards, 156 TransitionsBefore, 156 TransitionsAfterwards, 11858 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: 12779.5ms, 394 PlacesBefore, 316 PlacesAfterwards, 237 TransitionsBefore, 159 TransitionsAfterwards, 36660 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 78 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 78 TotalNumberOfCompositions, 15171 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15171, positive: 15171, positive conditional: 15171, 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: 15171, positive: 15171, positive conditional: 0, positive unconditional: 15171, 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: 15171, positive: 15171, positive conditional: 0, positive unconditional: 15171, 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: 15171, positive: 9165, positive conditional: 0, positive unconditional: 9165, negative: 6006, negative conditional: 0, negative unconditional: 6006, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6006, positive: 6006, positive conditional: 0, positive unconditional: 6006, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 11586, positive: 11586, positive conditional: 0, positive unconditional: 11586, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 15171, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 15171, unknown conditional: 15171, 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: 32.2ms, 317 PlacesBefore, 317 PlacesAfterwards, 158 TransitionsBefore, 158 TransitionsAfterwards, 12168 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: 13629.8ms, 399 PlacesBefore, 320 PlacesAfterwards, 240 TransitionsBefore, 161 TransitionsAfterwards, 37604 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 79 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 79 TotalNumberOfCompositions, 15563 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15563, positive: 15563, positive conditional: 15563, 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: 15563, positive: 15563, positive conditional: 0, positive unconditional: 15563, 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: 15563, positive: 15563, positive conditional: 0, positive unconditional: 15563, 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: 15563, positive: 9401, positive conditional: 0, positive unconditional: 9401, negative: 6162, negative conditional: 0, negative unconditional: 6162, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6162, positive: 6162, positive conditional: 0, positive unconditional: 6162, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 12226, positive: 12226, positive conditional: 0, positive unconditional: 12226, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 15563, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 15563, unknown conditional: 15563, 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: 31.6ms, 321 PlacesBefore, 321 PlacesAfterwards, 160 TransitionsBefore, 160 TransitionsAfterwards, 12482 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: 14827.9ms, 404 PlacesBefore, 324 PlacesAfterwards, 243 TransitionsBefore, 163 TransitionsAfterwards, 38560 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 80 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 80 TotalNumberOfCompositions, 15960 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15960, positive: 15960, positive conditional: 15960, 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: 15960, positive: 15960, positive conditional: 0, positive unconditional: 15960, 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: 15960, positive: 15960, positive conditional: 0, positive unconditional: 15960, 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: 15960, positive: 9640, positive conditional: 0, positive unconditional: 9640, negative: 6320, negative conditional: 0, negative unconditional: 6320, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6320, positive: 6320, positive conditional: 0, positive unconditional: 6320, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 13409, positive: 13409, positive conditional: 0, positive unconditional: 13409, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 15960, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 15960, unknown conditional: 15960, 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: 132.8ms, 325 PlacesBefore, 325 PlacesAfterwards, 162 TransitionsBefore, 162 TransitionsAfterwards, 12800 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: 15866.4ms, 409 PlacesBefore, 328 PlacesAfterwards, 246 TransitionsBefore, 165 TransitionsAfterwards, 39528 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 81 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 81 TotalNumberOfCompositions, 16362 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16362, positive: 16362, positive conditional: 16362, 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: 16362, positive: 16362, positive conditional: 0, positive unconditional: 16362, 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: 16362, positive: 16362, positive conditional: 0, positive unconditional: 16362, 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: 16362, positive: 9882, positive conditional: 0, positive unconditional: 9882, negative: 6480, negative conditional: 0, negative unconditional: 6480, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6480, positive: 6480, positive conditional: 0, positive unconditional: 6480, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 14362, positive: 14362, positive conditional: 0, positive unconditional: 14362, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 16362, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 16362, unknown conditional: 16362, 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: 33.1ms, 329 PlacesBefore, 329 PlacesAfterwards, 164 TransitionsBefore, 164 TransitionsAfterwards, 13122 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: 17302.7ms, 414 PlacesBefore, 332 PlacesAfterwards, 249 TransitionsBefore, 167 TransitionsAfterwards, 40508 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 82 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 82 TotalNumberOfCompositions, 16769 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16769, positive: 16769, positive conditional: 16769, 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: 16769, positive: 16769, positive conditional: 0, positive unconditional: 16769, 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: 16769, positive: 16769, positive conditional: 0, positive unconditional: 16769, 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: 16769, positive: 10127, positive conditional: 0, positive unconditional: 10127, negative: 6642, negative conditional: 0, negative unconditional: 6642, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6642, positive: 6642, positive conditional: 0, positive unconditional: 6642, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 15589, positive: 15589, positive conditional: 0, positive unconditional: 15589, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 16769, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 16769, unknown conditional: 16769, 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: 35.9ms, 333 PlacesBefore, 333 PlacesAfterwards, 166 TransitionsBefore, 166 TransitionsAfterwards, 13448 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: 17974.9ms, 419 PlacesBefore, 336 PlacesAfterwards, 252 TransitionsBefore, 169 TransitionsAfterwards, 41500 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 83 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 83 TotalNumberOfCompositions, 17181 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17181, positive: 17181, positive conditional: 17181, 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: 17181, positive: 17181, positive conditional: 0, positive unconditional: 17181, 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: 17181, positive: 17181, positive conditional: 0, positive unconditional: 17181, 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: 17181, positive: 10375, positive conditional: 0, positive unconditional: 10375, negative: 6806, negative conditional: 0, negative unconditional: 6806, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6806, positive: 6806, positive conditional: 0, positive unconditional: 6806, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 16317, positive: 16317, positive conditional: 0, positive unconditional: 16317, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 17181, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 17181, unknown conditional: 17181, 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: 35.9ms, 337 PlacesBefore, 337 PlacesAfterwards, 168 TransitionsBefore, 168 TransitionsAfterwards, 13778 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: 20101.4ms, 424 PlacesBefore, 340 PlacesAfterwards, 255 TransitionsBefore, 171 TransitionsAfterwards, 42504 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 84 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 84 TotalNumberOfCompositions, 17598 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17598, positive: 17598, positive conditional: 17598, 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: 17598, positive: 17598, positive conditional: 0, positive unconditional: 17598, 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: 17598, positive: 17598, positive conditional: 0, positive unconditional: 17598, 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: 17598, positive: 10626, positive conditional: 0, positive unconditional: 10626, negative: 6972, negative conditional: 0, negative unconditional: 6972, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6972, positive: 6972, positive conditional: 0, positive unconditional: 6972, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 18256, positive: 18256, positive conditional: 0, positive unconditional: 18256, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 17598, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 17598, unknown conditional: 17598, 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: 38.1ms, 341 PlacesBefore, 341 PlacesAfterwards, 170 TransitionsBefore, 170 TransitionsAfterwards, 14112 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: 21309.4ms, 429 PlacesBefore, 344 PlacesAfterwards, 258 TransitionsBefore, 173 TransitionsAfterwards, 43520 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 85 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 85 TotalNumberOfCompositions, 18020 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 18020, positive: 18020, positive conditional: 18020, 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: 18020, positive: 18020, positive conditional: 0, positive unconditional: 18020, 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: 18020, positive: 18020, positive conditional: 0, positive unconditional: 18020, 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: 18020, positive: 10880, positive conditional: 0, positive unconditional: 10880, negative: 7140, negative conditional: 0, negative unconditional: 7140, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7140, positive: 7140, positive conditional: 0, positive unconditional: 7140, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 19223, positive: 19223, positive conditional: 0, positive unconditional: 19223, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 18020, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 18020, unknown conditional: 18020, 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: 35.6ms, 345 PlacesBefore, 345 PlacesAfterwards, 172 TransitionsBefore, 172 TransitionsAfterwards, 14450 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: 22843.7ms, 434 PlacesBefore, 348 PlacesAfterwards, 261 TransitionsBefore, 175 TransitionsAfterwards, 44548 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 86 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 86 TotalNumberOfCompositions, 18447 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 18447, positive: 18447, positive conditional: 18447, 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: 18447, positive: 18447, positive conditional: 0, positive unconditional: 18447, 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: 18447, positive: 18447, positive conditional: 0, positive unconditional: 18447, 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: 18447, positive: 11137, positive conditional: 0, positive unconditional: 11137, negative: 7310, negative conditional: 0, negative unconditional: 7310, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7310, positive: 7310, positive conditional: 0, positive unconditional: 7310, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 20503, positive: 20503, positive conditional: 0, positive unconditional: 20503, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 18447, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 18447, unknown conditional: 18447, 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: 36.6ms, 349 PlacesBefore, 349 PlacesAfterwards, 174 TransitionsBefore, 174 TransitionsAfterwards, 14792 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: 24489.0ms, 439 PlacesBefore, 352 PlacesAfterwards, 264 TransitionsBefore, 177 TransitionsAfterwards, 45588 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 87 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 87 TotalNumberOfCompositions, 18879 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 18879, positive: 18879, positive conditional: 18879, 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: 18879, positive: 18879, positive conditional: 0, positive unconditional: 18879, 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: 18879, positive: 18879, positive conditional: 0, positive unconditional: 18879, 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: 18879, positive: 11397, positive conditional: 0, positive unconditional: 11397, negative: 7482, negative conditional: 0, negative unconditional: 7482, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7482, positive: 7482, positive conditional: 0, positive unconditional: 7482, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 22342, positive: 22342, positive conditional: 0, positive unconditional: 22342, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 18879, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 18879, unknown conditional: 18879, 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: 38.5ms, 353 PlacesBefore, 353 PlacesAfterwards, 176 TransitionsBefore, 176 TransitionsAfterwards, 15138 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: 26217.3ms, 444 PlacesBefore, 356 PlacesAfterwards, 267 TransitionsBefore, 179 TransitionsAfterwards, 46640 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 88 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 88 TotalNumberOfCompositions, 19316 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 19316, positive: 19316, positive conditional: 19316, 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: 19316, positive: 19316, positive conditional: 0, positive unconditional: 19316, 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: 19316, positive: 19316, positive conditional: 0, positive unconditional: 19316, 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: 19316, positive: 11660, positive conditional: 0, positive unconditional: 11660, negative: 7656, negative conditional: 0, negative unconditional: 7656, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7656, positive: 7656, positive conditional: 0, positive unconditional: 7656, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 23918, positive: 23918, positive conditional: 0, positive unconditional: 23918, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 19316, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 19316, unknown conditional: 19316, 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: 39.6ms, 357 PlacesBefore, 357 PlacesAfterwards, 178 TransitionsBefore, 178 TransitionsAfterwards, 15488 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: 28956.5ms, 449 PlacesBefore, 360 PlacesAfterwards, 270 TransitionsBefore, 181 TransitionsAfterwards, 47704 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 89 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 89 TotalNumberOfCompositions, 19758 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 19758, positive: 19758, positive conditional: 19758, 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: 19758, positive: 19758, positive conditional: 0, positive unconditional: 19758, 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: 19758, positive: 19758, positive conditional: 0, positive unconditional: 19758, 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: 19758, positive: 11926, positive conditional: 0, positive unconditional: 11926, negative: 7832, negative conditional: 0, negative unconditional: 7832, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7832, positive: 7832, positive conditional: 0, positive unconditional: 7832, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 26378, positive: 26378, positive conditional: 0, positive unconditional: 26378, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 19758, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 19758, unknown conditional: 19758, 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: 40.6ms, 361 PlacesBefore, 361 PlacesAfterwards, 180 TransitionsBefore, 180 TransitionsAfterwards, 15842 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: 31643.2ms, 454 PlacesBefore, 364 PlacesAfterwards, 273 TransitionsBefore, 183 TransitionsAfterwards, 48780 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 90 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 90 TotalNumberOfCompositions, 20205 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 20205, positive: 20205, positive conditional: 20205, 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: 20205, positive: 20205, positive conditional: 0, positive unconditional: 20205, 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: 20205, positive: 20205, positive conditional: 0, positive unconditional: 20205, 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: 20205, positive: 12195, positive conditional: 0, positive unconditional: 12195, negative: 8010, negative conditional: 0, negative unconditional: 8010, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8010, positive: 8010, positive conditional: 0, positive unconditional: 8010, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 28799, positive: 28799, positive conditional: 0, positive unconditional: 28799, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 20205, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 20205, unknown conditional: 20205, 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: 42.7ms, 365 PlacesBefore, 365 PlacesAfterwards, 182 TransitionsBefore, 182 TransitionsAfterwards, 16200 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: 34433.9ms, 459 PlacesBefore, 368 PlacesAfterwards, 276 TransitionsBefore, 185 TransitionsAfterwards, 49868 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 91 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 91 TotalNumberOfCompositions, 20657 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 20657, positive: 20657, positive conditional: 20657, 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: 20657, positive: 20657, positive conditional: 0, positive unconditional: 20657, 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: 20657, positive: 20657, positive conditional: 0, positive unconditional: 20657, 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: 20657, positive: 12467, positive conditional: 0, positive unconditional: 12467, negative: 8190, negative conditional: 0, negative unconditional: 8190, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8190, positive: 8190, positive conditional: 0, positive unconditional: 8190, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 31477, positive: 31477, positive conditional: 0, positive unconditional: 31477, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 20657, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 20657, unknown conditional: 20657, 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: 41.0ms, 369 PlacesBefore, 369 PlacesAfterwards, 184 TransitionsBefore, 184 TransitionsAfterwards, 16562 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: 35279.7ms, 464 PlacesBefore, 372 PlacesAfterwards, 279 TransitionsBefore, 187 TransitionsAfterwards, 50968 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 92 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 92 TotalNumberOfCompositions, 21114 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 21114, positive: 21114, positive conditional: 21114, 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: 21114, positive: 21114, positive conditional: 0, positive unconditional: 21114, 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: 21114, positive: 21114, positive conditional: 0, positive unconditional: 21114, 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: 21114, positive: 12742, positive conditional: 0, positive unconditional: 12742, negative: 8372, negative conditional: 0, negative unconditional: 8372, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8372, positive: 8372, positive conditional: 0, positive unconditional: 8372, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 32326, positive: 32326, positive conditional: 0, positive unconditional: 32326, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 21114, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 21114, unknown conditional: 21114, 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: 43.6ms, 373 PlacesBefore, 373 PlacesAfterwards, 186 TransitionsBefore, 186 TransitionsAfterwards, 16928 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: 36475.7ms, 469 PlacesBefore, 376 PlacesAfterwards, 282 TransitionsBefore, 189 TransitionsAfterwards, 52080 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 93 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 93 TotalNumberOfCompositions, 21576 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 21576, positive: 21576, positive conditional: 21576, 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: 21576, positive: 21576, positive conditional: 0, positive unconditional: 21576, 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: 21576, positive: 21576, positive conditional: 0, positive unconditional: 21576, 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: 21576, positive: 13020, positive conditional: 0, positive unconditional: 13020, negative: 8556, negative conditional: 0, negative unconditional: 8556, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8556, positive: 8556, positive conditional: 0, positive unconditional: 8556, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 33309, positive: 33309, positive conditional: 0, positive unconditional: 33309, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 21576, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 21576, unknown conditional: 21576, 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: 42.3ms, 377 PlacesBefore, 377 PlacesAfterwards, 188 TransitionsBefore, 188 TransitionsAfterwards, 17298 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: 39753.4ms, 474 PlacesBefore, 380 PlacesAfterwards, 285 TransitionsBefore, 191 TransitionsAfterwards, 53204 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 94 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 94 TotalNumberOfCompositions, 22043 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 22043, positive: 22043, positive conditional: 22043, 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: 22043, positive: 22043, positive conditional: 0, positive unconditional: 22043, 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: 22043, positive: 22043, positive conditional: 0, positive unconditional: 22043, 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: 22043, positive: 13301, positive conditional: 0, positive unconditional: 13301, negative: 8742, negative conditional: 0, negative unconditional: 8742, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8742, positive: 8742, positive conditional: 0, positive unconditional: 8742, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 36191, positive: 36191, positive conditional: 0, positive unconditional: 36191, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 22043, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 22043, unknown conditional: 22043, 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: 43.5ms, 381 PlacesBefore, 381 PlacesAfterwards, 190 TransitionsBefore, 190 TransitionsAfterwards, 17672 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: 40817.3ms, 479 PlacesBefore, 384 PlacesAfterwards, 288 TransitionsBefore, 193 TransitionsAfterwards, 54340 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 95 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 95 TotalNumberOfCompositions, 22515 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 22515, positive: 22515, positive conditional: 22515, 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: 22515, positive: 22515, positive conditional: 0, positive unconditional: 22515, 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: 22515, positive: 22515, positive conditional: 0, positive unconditional: 22515, 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: 22515, positive: 13585, positive conditional: 0, positive unconditional: 13585, negative: 8930, negative conditional: 0, negative unconditional: 8930, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8930, positive: 8930, positive conditional: 0, positive unconditional: 8930, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 37319, positive: 37319, positive conditional: 0, positive unconditional: 37319, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 22515, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 22515, unknown conditional: 22515, 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: 44.1ms, 385 PlacesBefore, 385 PlacesAfterwards, 192 TransitionsBefore, 192 TransitionsAfterwards, 18050 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: 43410.2ms, 484 PlacesBefore, 388 PlacesAfterwards, 291 TransitionsBefore, 195 TransitionsAfterwards, 55488 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 96 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 96 TotalNumberOfCompositions, 22992 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 22992, positive: 22992, positive conditional: 22992, 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: 22992, positive: 22992, positive conditional: 0, positive unconditional: 22992, 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: 22992, positive: 22992, positive conditional: 0, positive unconditional: 22992, 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: 22992, positive: 13872, positive conditional: 0, positive unconditional: 13872, negative: 9120, negative conditional: 0, negative unconditional: 9120, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 9120, positive: 9120, positive conditional: 0, positive unconditional: 9120, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 39957, positive: 39957, positive conditional: 0, positive unconditional: 39957, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 22992, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 22992, unknown conditional: 22992, 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: 45.6ms, 389 PlacesBefore, 389 PlacesAfterwards, 194 TransitionsBefore, 194 TransitionsAfterwards, 18432 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 - TimeoutResultAtElement [Line: 30]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 30). Cancelled while CegarLoopForPetriNetWithRepeatedLiptonReduction was constructing initial abstraction,while PetriNetLargeBlockEncoding was applying PetriNetLargeBlockEncoding to Petri net that has 489 places, 294 transitions, 10385 flow,while LiptonReduction was applying LiptonReduction to Petri net that has 489 places, 294 transitions, 10385 flow and 56648 co-enabled transitions pairs.,while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 8 locations, 1 error locations. Started 97 CEGAR loops. EmptinessCheckTime: 57.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 784791.1ms, OverallIterations: 192, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 9309.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 769574.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 96 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 306.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9990occurred in iteration=0, InterpolantAutomatonStates: 288, 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: 70.8ms SsaConstructionTime, 190.3ms SatisfiabilityAnalysisTime, 584.7ms InterpolantComputationTime, 5040 NumberOfCodeBlocks, 5040 NumberOfCodeBlocksAsserted, 192 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 96 InterpolantComputations, 96 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown